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Assembled Flexible PCB Built On 0.15mm Polyimide (PI) with Immersion Gold

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Shenzhen Bicheng Electronics Technology Co., Ltd

Contact name
Kevin Liao

Quick Information

  • Brand Name: Bicheng
  • Place of Origin: China
  • Model Number : BIC-0321-V3.21
  • Base Material : Polyimide
  • Board Thickness : 015mm
  • Copper Thickness : 1oz
  • Min. Hole Size : 03mm
  • Min. Line Spacing : 7mil
  • Min. Line Width : 8mil
  • Surface Finishing : ImmersionGpld
  • Coverlay Colour : Yellow
  • Color of Silkscreen : White
  • Test : 100% Pass electrical test


Clarifications of FPC

According to the combination of base material and copper foil, flexible circuit board can be divided into two types: flexible board with adhesive and flexible board without adhesive. The price of non-adhesive flexible PCB is much higher than that of adhesive flexible PCB, but its flexibility, bonding force between copper foil and substrate and flatness of solder are also better than that of adhesive flexible PCB. So it is only used in the high demand situations, such as the: COF (CHIP ON FLEX, flexible board with bare chip, the high flatness of the pad) and so on. Because its price is high, most of the flexible PCBs used in the market are still adhesive flexible circuit board. Because the flexible circuit board is mainly used in the situation where bending is required, if the design or process is not reasonable, it is easy to produce micro-cracks, welding and other defects.

Economy of using FPC

If the circuit design is relatively simple, the total volume is small, and the space is suitable, the traditional internal connection is much cheaper. Flexible circuits are a good design option if the circuit is complex, processes many signals or has special electrical or mechanical requirements. When the size and performance of applications exceed the capacity of rigid circuits, flexible assembly is the most economical. A 12mil pad with a 5mil through hole and a flexible circuit with 3mil lines and spacing can be fabricated on a thin film. Therefore, it is more reliable to mount the chip directly on the film. There is no flame retardant that could be an ion source. These films may be protective and solidified at higher temperatures to obtain higher glass transition temperatures. Flexible materials are less costly than rigid materials because they are free of connectors.




FPC Case: Assembled Flexible PCB Built On 0.15mm Polyimide (PI) With Immersion Gold

(Flexible printed circuits are custom-made products, the picture and parameters shown are just for reference)


General description

This is a type of assembled flexible PCB built on polyimide substrate with Tg 60°C for the application of Portable Sound System. It's 2 layer FPC at 0.15 mm thick, white silkscreen on yellow coverlay (solder mask) covering both sides and immersion gold on pads. Polyimide as stiffener is on the back of one end. The base material is from Shengyi, entire board supplying 34 PCBs per panel. They're fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 25 panels are packed for shipment.


Parameter and data sheet

PCB Size:

29 x 4.0mm, 121 x 75.5mm=34 pcs

Number of Layers

2 layers

Board Type

Flexbile cirucit

Board Thickness

0.15mm +/-10%

Board Material

Polyimide (PI) 25um

Board Material Supplier


Tg Value of Board Material



PTH Cu thickness

20 um

Inner Iayer Cu thicknes


Surface Cu thickness

35 um (1oz)


Coverlay Colour


Number of Coverlay


Thickness of Coverlay

25 um


Polyimide 0.3mm


Type of Silkscreen Ink


Supplier of Silkscreen


Color of Silkscreen


Number of Silkscreen



Minimum via (mm)


Minimum Trace (mil)


Minimum Gap(mil)



Surface Finish

Immersion Gold

RoHS Required





Thermal Shock Test

Pass, -25℃ ±125℃, 1000 cycles.

Thermal Stress

Pass, 300±5℃ ,10 seconds, 3 cycles. No delamination, no blistering.


100% Pass electrical test


Compliance with IPC-A-600H & IPC-6013C Class 2

Type of artwork to be supplied

email file, Gerber RS-274-X, PCBDOC etc

Service area

Worldwide, Globally.



Features and benefits

Excellent flexibility;

Reducing the volume;

Weight reduction;

Consistency of assembly;

SMT process is resistant to reflow soldering, resistant to rework;

Comprehensive equipment management and maintenance and process control;

Strict WIP inspection and monitoring as well as working instruction;

Small quantity order is accepted;

12 hours quotation;

Prototype PCB capability;

Volume Production capability;




Thin-film switch, Capacitive touch screen / panel, mobile phone antenna flex board, mobile phone module flex board, FFC for industrial control equipment, industrial control touch remote control soft board, Tablet PC camera soft board, Tablet computer battery soft board



About Us

Bicheng PCB, a unique printed circuit board supplier based in Shenzhen China serves worldwide customers since its born in 2003. At Bicheng, every batch of PCB goes through electrical test, AOI inspection, high voltage test, Impedance control test, micro-section, solder-ability test, thermal stress test, reliability test, insulation resistance test and ionic contamination test etc. Finally it is like a beautiful gift to be delivered to your hands.


Different plant scale to suit for your requirements

16000 square meter factory building

30000 square meter month capability

8000 types of PCB per month

ISO9001, ISO14001, TS16949, UL Certified


Variety of PCB technology to meet the market demands

HDI board

Heavy copper board

Hybrid material board

Blind via board

High frequency board

Metal core board

Immersion gold board

Multilayer board

Backplane board

Gold finger board


Comprehensive sales service presale, in sale and after sale.

Quick CADCAM checking and free PCB quotation

Free-of-charge PCB panelization

Prototype PCB capability

Volume Production capability

Quick turn-around samples

Free-of-charge PCB test

Solid carton packing





  • UL : E251497


  • Delivery Port : HongKong

Packaging & Delivery

  • Packing :Vacuum
  • Packaging Size : 5 x 7 x 8  Centimeters
  • Package Weight :
  • Delivery Lead Time : 6
  • Supply Ability : 45000

Product Image

  • 1Assembled Flexible PCB Built On 0.15mm Polyimide (PI) with Immersion Gold image 1
  • 2 Assembled Flexible PCB Built On 0.15mm Polyimide (PI) with Immersion Gold image 2
  • 3 Assembled Flexible PCB Built On 0.15mm Polyimide (PI) with Immersion Gold image 3
  • 4 Assembled Flexible PCB Built On 0.15mm Polyimide (PI) with Immersion Gold image 4

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