24
25
25
5
35
25
25
30
175
295
BFH12 Series FPC/FFC Construction (Recommended Specifications)
1. FFC FFC : Flexible Flat Cable
FPC : Flexible Printed Circuit
Material Name Material
Thickness (µm)
2. FPC
3. Precautions
Material Name
Covering layer film
Cover adhesive
Surface treatment
Copper foil
Base adhesive
Base film
Reinforcement material adhesive
Stiffener
Material
Thickness (µm)
1. This specification is a recommendation for the construction of the FH12 Series FPC and FFC (t=0.3 ±0.05).
2. For details about the construction, please contact the FPC/FFC manufacturers.
Note: Use of a thicker FFC results in a stiffer lock action and the lock is more easily released.
A factor that contributes to thicker FFC is the use of 250
µ
m stiffener which is thicker than the standard (188
µ
m) product. This
results in a total thickness of 357
µ
m.
When using FFC, control of FFC thickness becomes easy if you indicate to us the thickness of the stiffener.
*
Real tolerance of thickness dimension is on the order of ±20 µm (275 to 315 µm)
35
30
12
30
188
295
Hard copper foil with tin plating
Adhesive
Polyester
Adhesive
Stiffener (Note)
Polyester type
Polyester type
Polyester type
Total
Polyamide 1 mil
Solder plating
Cu 1oz
Polyamide 1 mil
Heat-hardened adhesive
Polyamide 7 mil
Total
