Brief Introduction of FPC
Flexible Printed Circuit Board (FPC) is referred to as "soft board". In the industry, FPC is a
Printed circuit board made of flexible insulating substrate (mainly polyimide or polyester film),
Which has many advantages that rigid printed circuit boards do not have. for example, it can
Be freely bent, wound, folded. the volume of electronic products can be greatly reduced by
Using FPC, which is suitable for the development of electronic products in the direction of high
Density, miniaturization and high reliability. Therefore, FPC has been widely used in aerospace,
Military, laptop, computer peripherals, PDA, digital camera and other fields or products.

FPC also has the advantages of good heat dissipation,
Solderability, easy mounting and low cost.

Flexible printed circuit board has one layer, two layers and multilayer board. the base material
Is polyimide clad laminate. this kind of material has high heat resistance and good dimensional
Stability. It is the final product through pressing with the coating film which has both mechanical
Protection and good electrical insulation. the surface and inner conductors of double-sided and
Multi-layer printed circuit boards are metallized to realize the electrical connection of inner
and outer layers.

the function of flexible circuit board can be divided into four kinds, namely, lead line,
Printed circuit, connector and multifunction integrated system, which cover computer,
Computer peripheral auxiliary system, consumer household electrical appliance and
Automobile, etc.


FPC Case: Single Sided Flexible Printed Circuit (FPC)
Built on Polyimide with Immersion Gold
(FPC's are custom-made products, the picture and parameters shown are just for
Reference)

General description
this is a type of flexible printed circuit for the application of Bluetooth Headset. It's a single
Sided layer FPC at 0.15mm thick. the base laminate is from Shengyi. It's fabricated per IPC
6012 Class 2 using supplied Gerber data. Polyimide stiffener is applied on the inserting part.

Parameter and data sheet

PCB SIZE	45 x 33mm=1PCS
BOARD TYPE
Number of Layers	Single sided PCB
Surface Mount Components	YES
through Hole Components	no
LAYER STACKUP	Copper ------- 35um(1oz)
	Polyimide 0.1mm
TECHNOLOGY
Minimum Trace and Space:	12mil/12mil
Minimum / Maximum Holes:	2.5mm
Number of Different Holes:	1
Number of Drill Holes:	2
Number of Milled Slots:	0
Number of Internal Cutouts:	0
Impedance Control	NO
BOARD MATERIAL
Glass Epoxy:	Polyimide 0.1mm, FPC
Final foil external:	1oz
Final foil internal:	0oz
Final height of PCB:	0.1mm 0.05
PLATING and COATING
Surface Finish	Electroless nickel over Immersion Gold (ENIG)( 1 " over 100 " nickel)
Solder Mask Apply to:	TOP
Solder Mask Color:	Yellow, Coverlay
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Laser cut
MARKING
Side of Component Legend	TOP
Colour of Component Legend	White, IJR-4000 MW300, Taiyo Supplied.
Manufacturer Name or Logo:	Marked on the board in a conductor and leged FREE AREA
VIA	None Plated through Hole(NPTH)
FLAMIBILITY RATING	UL 94-V0 Approval MIN.
DIMENSION TOLERANCE
Outline dimension:	0.0059" (0.15mm)
Board plating:	0.0030" (0.076mm)
Drill tolerance:	0.002" (0.05mm)
TEST	100% Electrical Test prior shipment
TYPE of ARTWORK to BE SUPPLIED	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
Controllability of electrical parameter design
the end can be whole soldered
Material optionality
Low cost
Continuity of processing
No minimum order quantity and low cost sample.
More than 15 years of experience

Application
Thin-film switch,Medical keypad soft board


Variety of PCBs


PCB Film exposure