Flexible Printed Circuit FPC on
Polyimide with 90ohm Impedance Controlled
(Flexible
printed circuits are custom-made products, the picture and parameters shown are
just for reference)
General description:
It's standard 0.20 mm thick with yellow solder mask (coverlay) on
both sides and immersion gold are on pads. FR-4 as stiffener is on the head and
tail. The base material is used from Shengyi, entire board supplying 1 up flex
per panel. They're fabricated per IPC 6012 Class 2 using supplied Gerber data.
Each 25 pieces are packed for shipment.
Parameter and data sheet:
|
PCB
Size:
|
196 X 35mm = 1
PCS
|
|
Number of Layers
|
2
layers
|
|
Board Type
|
Flexbile
PCB
|
|
Board Thickness
|
0.2mm
+/-10%
|
|
Stackup
|
TOP
FR-4 Steffener 0.8mm
|
|
PI coverlay 0.025mm
|
|
Copper top 0.035mm finish
|
|
Polyimide substrate 0.076mm
|
|
Copper top 0.035mm finish
|
|
PI coverlay 0.025mm
|
|
Board Material Supplier
|
Shengyi
|
|
Tg Value of Board Material
|
60℃
|
|
|
|
PTH Cu thickness
|
20
um
|
|
Inner Iayer Cu thicknes
|
N/A
|
|
Surface Cu thickness
|
35
um (1oz)
|
|
|
|
Coverlay Colour
|
Yellow
|
|
Number of Coverlay
|
2
|
|
Thickness of Coverlay
|
25
um
|
|
Stiffener
|
FR-4
0.8mm
|
|
|
|
Type of Silkscreen Ink
|
N/A
|
|
Supplier of Silkscreen
|
N/A
|
|
Color of Silkscreen
|
N/A
|
|
Number of Silkscreen
|
N/A
|
|
|
|
Minimum
via (mm)
|
0.3
|
|
Minimum Trace (mil)
|
5.90
|
|
Minimum Gap(mil)
|
11.8
|
|
|
|
Surface Finish
|
Immersion
Gold
|
|
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
|
|
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;
Increased
reliability;
Powerful
PCB capabilities support your research and development, sales and marketing;
Delivery
on time with higher than 98% on-time-delivery rate;
Team
with passion, discipline, responsibility and honesty;
No
minimum order quantity. 1 piece is available;
Applications:
Flexible
flat cable, Industrial control temperature controller soft board, medical
equipment controller, automobile GPS navigation flex board, tablet keypad flex
board, display backlight
1.5
Single ended (line) impedance, Differential impedance
Definition
of Characteristic Impedance
At a
certain frequency, relative to a reference layer, the resistance of its
high-frequency signals or electromagnetic waves in the process of transmission
is called the characteristic impedance, which is the vector summation of electrical impedance, inductive reactance, capacitance resistance.
The
classification of characteristic impedance
Common
characteristic impedance is divided into:（1）Single ended (line) impedance; (2) Differential impedance and (3) coplanar impedance,
etc.
Single
ended impedancerefers to the measured impedance of a single signal line. Differential
impedancerefers to the impedance measured between the two transmission
lines with equivalent width and spacing in differential drive.Coplanar impedancerefers to the impedance measured when the signal line is transmitting between
its surrounding GND / VCC (the space between the signal line to GND / VCC on
both sides is equal).
The
Determinant Condition Required for Impedance Control
When
the signal is transmitted in the PCB conductor, if the length of conductor is
close to the 1/7 of the signal wavelength, then the conductor at this time
becomes a signal transmission line, the other general signal transmission lines
are required to be done with impedance control. Whether it is required to
control the impedance in PCB production is based on the customer's requirement,
if the customer requires that a certain line width need to be done with
impedance control, it is required to control the impedance of the line width in
production.Three basic elements of impedance match are the output impedance
(the original active parts), the characteristic impedance (signal line), the
input impedance (passive parts) (PCB board)
More
Impedance Controlled Flexible Circuit (FPC)
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