24
25
25
5
35
25
25
30
175
295
B
FH12 Series FPC/FFC Construction (Recommended Specifications)
1. FFC
FFC : Flexible Flat Cable
FPC : Flexible Printed Circuit
Material Name
Material
Thickness (
μ
m)
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 (
μ
m)
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
μ
m (275 to 315
μ
m)
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
Tin-lead
Cu
1oz
Polyamide 1 mil
Heat-hardened adhesive
Polyamide 7 mil
Total