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Stack-up for FPC

The following is the usual FPC stackup information. If you need custom FPC stackup, please make note and we will manufacture according to your requirement.
Polyimide (PI) is the most commonly used thermal curing insulating material in flexible circuit processing. The thickness range of the material is generally 12.5μm (0.5mil) and 125μm (5mil). Divided into with glue and without glue, the DK with glue is 3.5, and the DK without glue is 3.3.

FPC Stackup of PET (Transparent)

Thickness

  • 0.11mm (Single Layer)
  • 0.2mm (2 Layers)
  • 0.23mm (2 Layers)
Top coverlay PET 25um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 18um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   113um
Top coverlay PET 25um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 20um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay Adhesive 25um
PET 25um
Total thickness   201um
Top coverlay PET 25um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 20um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay Adhesive 25um
PET 25um
Total thickness   235um

Single Layer FPC Stackup

Thickness

  • 0.08mm
  • 0.1mm
  • 0.12mm
  • 0.13mm
  • 0.15mm
  • 0.16mm
  • 0.17mm
  • 0.18mm
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 18um (Finished copper thickness 18um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   83.5um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 18um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   106um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 18um (Finished copper thickness 18um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   105um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 18um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   124um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 35um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   130um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 35um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   128um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 35um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   148um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 50um
Top copper layer Copper 70um (Finished copper thickness 70um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   157.5um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 70um (Finished copper thickness 70um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   163um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 35um)
  Adhesive 25um
  PI 43um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   171um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 70um (Finished copper thickness 70um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
Total thickness   183um

2 Layers FPC Stackup

Thickness

  • 0.1mm
  • 0.12mm
  • 0.13mm
  • 0.15mm
  • 0.16mm
  • 0.17mm
  • 0.18mm
  • 0.2mm
  • 0.22mm
  • 0.23mm
  • 0.24mm
  • 0.25mm
  • 0.26mm
  • 0.27mm
  • 0.29mm
  • 0.3mm
  • 0.34mm
  • 0.35mm
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   104um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper >18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   116um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 13um
  PI 12.5um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   129.5um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 20um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   156um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   147um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   159um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 13um
  PI 12.5um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   172.5um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 25um
PI 25um
Total thickness   187um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 20um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 25um
PI 25um
Total thickness   201um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 25um
PI 25um
Total thickness   195um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 20um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   199um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   223um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 20um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 25um
PI 25um
Total thickness   235um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   231um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 20um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   237um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 50um
Top copper layer Copper 50um (Finished copper thickness 58um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 50um (Finished copper thickness 58um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 50um
PI 12.5um
Total thickness   250um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 50um (Finished copper thickness 58um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 50um (Finished copper thickness 58um)
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   261um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 20um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 20um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   271um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 50um
Top copper layer Copper 70um (Finished copper thickness 80um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 70um (Finished copper thickness 80um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 50um
PI 12.5um
Total thickness   290um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 70um (Finished copper thickness 80um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 70um (Finished copper thickness 80um)
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   301um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 50um
Top copper layer Copper 70um (Finished copper thickness 80um)
  Adhesive 25um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 25um
Bottom copper layer Copper 70um (Finished copper thickness 80um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 50um
PI 12.5um
Total thickness   340um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 70um
  Adhesive 25um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 25um
Bottom copper layer Copper 70um
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   351um

4 Layers FPC Stackup

Thickness

  • 0.2mm
  • 0.22mm
  • 0.23mm
  • 0.25mm
  • 0.26mm
  • 0.27mm
  • 0.3mm
  • 0.33mm
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   204um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   216um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   230um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   247um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   268um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 25um
PI 25um
Total thickness   261um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   259um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   273um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 18um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 18um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 25um
PI 25um
Total thickness   299um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 25um
PI 25um
Total thickness   295um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   299um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   331um

4 Layers Rigid-Flex Stackup

Thickness

  • 1.6mm
  Rigid part Flex part
  Top soldermask layer 20um    
Rigid-top copper layer Copper 18um (Finished copper thickness 35um)    
  FR4 680um PI 12.5um
  Pure gum 13um Adhesive 15um
Flex-copper 2 layer Copper 18um Copper 18um
  Adhesive 13um Adhesive 13um
  PI 25um
dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)		 PI 25um
dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um Adhesive 13um
Flex-copper 3 layer Copper 18um Copper 18um
  Pure gum 13um Adhesive 15um
  FR4 680um PI 12.5um
Rigid-bottom copper layer Copper 18um (Finished copper thickness 35um)    
  Bottom soldermask layer 20um    
  Total thickness 1549um FPC thickness 142um

6 Layers FPC Stackup

Thickness

  • 0.3mm
  • 0.33mm
  • 0.34mm
  • 0.37mm
  • 0.38mm
  • 0.42mm
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  Coverlay 27.5um
Inner 4 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 5 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   293.5um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 12.5um
Adhesive 15um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  Coverlay 27.5um
Inner 4 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 5 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 15um
PI 12.5um
Total thickness   331.5um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 12um (Finished copper thickness 18um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  Coverlay 27.5um
Inner 4 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 5 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 12um (Finished copper thickness 18um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   336.5um
Top coverlay
(White coverlay)		 PI 31um
Adhesive 18um
Top copper layer Copper 18um (Finished copper thickness 24um)
  Adhesive 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  Coverlay 27.5um
Inner 4 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 5 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 13um
Bottom copper layer Copper 18um (Finished copper thickness 24um)
Bottom coverlay
(White coverlay)		 Adhesive 18um
PI 31um
Total thickness   374.5um
Top coverlay
(Yellow coverlay / Black coverlay)		 PI 25um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  Coverlay 27.5um
Inner 4 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 5 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay
(Yellow coverlay / Black coverlay)		 Adhesive 25um
PI 25um
Total thickness   384.5um
Top coverlay
(White coverlay)		 PI 43um
Adhesive 25um
Top copper layer Copper 35um (Finished copper thickness 41um)
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Pure gum 13um
Inner 2 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 3 layer Copper 12um
  Pure gum 13um
  Coverlay 27.5um
Inner 4 layer Copper 12um
  Adhesive 0um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Inner 5 layer Copper 12um
  Pure gum 13um
  PI 25um
Dielectric constant 3.3~3.5 (The DK value is not absolute and will vary depending on the base material's models and thickness.)
  Adhesive 0um
Bottom copper layer Copper 35um (Finished copper thickness 41um)
Bottom coverlay
(White coverlay)		 Adhesive 25um
PI 43um
Total thickness   420.5um
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