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Multilayer Flexible Pcbs
【Brief】:This is a type of 4 layer flexible circuit for the application of Industrial Systems. The base laminate
is from ITEQ, It's fabricated per IPC 6012 Class 2 using supplied Gerber data. FR-4 as stiffner is
on the inserting part.
【Series】:Flexible PCB
1. Features and benifits

A. Excellent flexibility
B. Reducing the volume
C. Weight reduction
D. Consistency of assembly
E. Increased reliability
F. Controllability of electrical parameter design
G. The end can be whole soldered
H. Material optionality
I.  Low cost
J. Continuity of processing
K. Quick and on-time delivery
L. Eligible products rate of first production: >95%  

2. Application

Display backlight, Mobile phone module flex board, Industrial control computer soft board
3.Parameter and data sheet
Size of Flexible PCB 170.48 X 40.28mm
Number of Layers 4
Board Type Flexible PCB
Board Thickness 0.25mm
Board Material Polyimide  50µm
Board Material Supplier ITEQ
Tg Value of Board Material 60ºC
PTH Cu thickness ≥20 µm
Inner Iayer Cu thicknes 35 µm
Surface Cu thickness 35 µm
Coverlay Colour Yellow
Number of Coverlay 2
Thickness of Coverlay 25 µm
Stiffener Material FR-4
Stiffener Thickness 1.0mm
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 90ºC 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, -25ºC±125ºC, 1000 cycles.
Thermal Stress Pass, 300±5ºC,10 seconds, 3 cycles. 
No delamination, no blistering.
Function 100% Pass electrical test
Workmanship Compliance with IPC-A-600H & IPC-6013C Class 2
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