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Home Flexible Printed Circuit Flexible Printed Circuit (FPC) Flexible PCB With Partial Green Solder Mask

Flexible Printed Circuit (FPC) Flexible PCB With Partial Green Solder Mask

This type of flexible printed circuit is on polyimide material for the application of gigabyte switch


  • Item NO.:

    BIC-259-v62.0
  • Order(MOQ):

    1-10
  • Payment:

    T/T
  • Price Range:1 - 50/$1.9
  • Price Range:1 - 50/$99
  • Product Origin:

    China
  • Shipping Port:

    Shenzhen
  • Lead Time:

    7-10 days
  • Product Detail

Flexible Printed Circuit (FPC) Flexible PCB With Partial Green Solder Mask

(FPC’s are custom-made products, the picture and parameters shown are just for reference)


General description:


It’s a 2 layer FPC at 0.25mm thick. Green solder mask is used in the center of the chip area. The base laminate is from Shengyi, It’s fabricated per IPC 6012 Class 2 using supplied Gerber data. FR-4 stiffeners are bonded on the inserting head and bottom side.


FPC with Partial Green Solder Mask


Parameter and data sheet:


Size of Flexible PCB 75.22 X 31.17mm
Number of Layers 2
Board Type Flexible PCB
Board Thickness 0.25mm
Board Material PET 25µm
Board Material Supplier ITEQ
Tg Value of Board Material  60℃
PTH Cu thickness ≥20 µm
Inner Iayer Cu thicknes N/A
Surface Cu thickness 70um
Coverlay Colour Black / Green solder mask
Number of Coverlay 2
Thickness of Coverlay 25 µm
Stiffener Material FR-4 / Polyimide
Stiffener Thickness 0.4mm /0.2mm
Type of Silkscreen Ink IJR-4000 MW300
Supplier of Silkscreen TAIYO
Color of Silkscreen White
Number of Silkscreen 1
Peeling test of Coverlay No peelable
Legend Adhesion 3M 90℃No peeling after Min. 3 times test
Surface Finish Immersion Gold
Thickness of Nickle/Gold Au: 0.03µm(Min.); Ni 2-4µm
RoHS Required Yes
Famability 94-V0
Thermal Shock Test Pass, -25℃±125℃, 1000 cycles. 
Thermal Stress Pass, 300±5℃,10 seconds, 3 cycles. No delamination, no blistering.
Function  100% Pass electrical test
Workmanship Compliance with IPC-A-600H & IPC-6013C Class 2


Features and benefits:


Excellent flexibility

Reducing the volume

Weight reduction

Consistency of assembly

Increased reliability

Material optionality

Low cost

Continuity of processing

Great customer service

Make delivery on time. We keep higher than 98% on-time-delivery rate.


Applications:


Toy lamp strip, industrial control audio equipment, Tablet PC module soft board


Covercoat / Solder Mask:


Solder mask in flexible PCB is different from rigid board, it is usually a polyimide film coated on one side with a semi-cured and non-tacky adhesive, we call it covercoat in flexible circuit. It is laminated to the flexible circuit under heat and pressure, so that the copper pattern is fully encapsulated except for the solder pads that are exposed through access holes in the covercoat.


The covercoat production sheet should be cut slightly smaller than the flexible circuit production sheet to avoid premature edge sealing, which could trap air bubbles in the package.


The production sheet for the covercoat is provided with tooling holes in close register with the tooling holes in the production sheet for the flexible circuit. The access holes are usually drilled, but in the case of high-volume production, punching is more cost-effective.


In principle, drilling of the covercoat is accomplished in the same way as when drilling rigid boards, i.e., a number of covercoat sheets are stacked, either 5-up or 10-up. The drilling parameters, however, are somewhat different, because of the polyimide material and the absence of copper foil, which otherwise could have removed some of the heat from the holes being drilled.


When drilling/punching large covercoat production sheets, it is necessary to compensate for the dimensional changes of the flexible circuit production sheet, which can amount to as much as 0.2%.


More Displays of Flexible Circuits with Partial Green Solder Mask:


 More FPC with Green Mask  More FPC with Green Mask



MANUFACTURING PROCESS:


Manufacturing Process of Dual Layer PTH PCB


BICHENG PCB WORKSHOP:



BICHENG PCB CERTIFICATE:



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