A. Flexible Flat Cable (FFC)
“ Flexible Flat Cable”, the brief name is FFC. It is a kind of new data cable that it is to be make with PET insulate material and plate flat copper wire of tin thinly through the high technology equipments. It has many advantage, such as a soft, curve to fold at will, the thickness is thin, the physical volume is small 、link in brief and solve electromagnetism to shield (EMS) easily etc.
It is the most suitable for move the parts to main board 、board to board ,make a data to deliver through a cable in the small scaled electric appliances equipments. The connection of the print head and main board in various printer is very extensively now , painting instrument, scanner, duplicator , stereo set, LCD electric appliances, facsimile machine, various video-disc machine etc.
Because the cost of the FFC cable is lower than FPC (Flexible Printing Circuit ) , so its application will become to more extensively. The FPC will be replaced with FFC in the most places that use FPC . We can be make to order base on various length, size and do the EMI processing .
B. Flexible Flat Cable (FFC) Parameter
C. Flexible Flat Cable (FFC) Performance
| Item |
Symbol |
Unit |
Index |
| Pitch |
P |
mm |
0.3 |
0.5 |
0.8 |
1.0 |
1.25 |
1.27 |
2.0 |
2.54 |
| Number of conductor |
N |
core |
15-119 |
8-150 |
4-90 |
4-70 |
4-70 |
4-70 |
4-40 |
4-40 |
| Pitch tolerance |
|
mm |
±0.03 |
±0.03 |
±0.08 |
±0.08 |
±0.01 |
±0.01 |
±0.01 |
±0.01 |
| Cable width |
W |
mm |
(N+1)x0.3±0.03 |
(N+1)x0.5 ±0.08 |
(N+1)x0.8±0.10 |
(N+1)x1.0 ±0.15 |
(N+1)x1.25±0.2 |
(N+1)x1.27±0.2 |
(N+1)x2.0±0.3 |
(N+1)x2.54±0.35 |
| Total pitch |
Pt |
mm |
(N-1)x0.3±0.03 |
(N-1)x0.5±0.08 |
(N-1)x0.8±0.10 |
(N-1)x1.0±0.15 |
(N-1)x1.25±0.2 |
(N-1)x1.27±0.2 |
(N-1)x2.0±0.3 |
(N-1)x2.54±0.35 |
| Edge width tolerance |
|
mm |
±0.03 |
±0.05 |
±0.08 |
±0.08 |
±0.1 |
±0.1 |
±0.1 |
±0.1 |
| Plugging length |
S1-S2 |
mm |
2±0.5 3±0.5 4±0.5 5±1 6±1 |
| Reinforcing board length |
S3-S4 |
mm |
4-7±1 8-15±2 16-20±3 |
| Cable length |
L |
mm |
L<200mm±3 200< L >400±5 L >400±8 |
| Plugging end thickness |
T |
mm |
0.27-0.36±0.05 |
| Conductor thickness |
Ct |
mm |
0.05 |
0.035/0.05 |
0.035/ 0.05/0.1 |
0.035/ 0.05/0.1 |
0.05/0.1 |
0.05/0.1 |
0.05/0.1 |
0.05/0.1 |
| Conductor width |
Cw |
mm |
0.02 |
0.3±0.03 |
0.65±0.03 0.80±0.03 |
0.65±0.03 0.80±0.03 |
0.65±0.03 0.8±0.03 |
0.65±0.03 0.8±0.03 |
0.65±0.03 0.8±0.03 |
0.65±0.03 1.27±0.03 |
| Material of insulating layer |
|
|
PET white/black thickness 0.043mm、0.06mm、0.08mm、0.092mm、0.10mm、0.15mm |
| Material of reinforcing board |
|
|
PET blue/black thickness 0.16mm、0.225mm、0.282mm |
| Item |
Method of measurement |
0.1×1.27 |
0.1×0.8 |
0.1×0.7 |
0.05×0.8 |
0.05×0.65 |
0.05×0.5 |
0.035×0.65 |
0.035×0.3 |
| Conductor impedance (Ω/M) |
JIS C-3102at 20℃ |
0.1 |
0.26 |
0.33 |
0.52 |
0.63 |
0.68 |
0.7 |
1.5 |
| Insulation Impedance |
DC500V at 20℃ |
>100MΩ 100MΩ above |
| Line to line insulation voltage endurance |
DC500V for 1 min |
no conduction |
| Rated voltage/temperature |
|
60V/80℃ |
| Rated current |
|
1.25A |
1A |
0.5A |
| Energized |
Energized machine test
DC3.0V 0.1mA |
no turn off and short circuit |
| Aging |
85℃ , 96hrs |
insulation impedance and line to line insulation voltage endurance are normal |
| Temperature test cycle |
-40℃ for 4hrs->
85℃ for 4hrs->
25℃ for 1hrs(5cyc) |
insulation impedance and line to line insulation voltage endurance are normal |
| Moisture proof |
40℃ 95%RH 96hrs |
insulation impedance and line to line insulation voltage endurance are normal |
| Flexibility test |
180° flexual
15mmR 1000Cycles
/min 25mm stroke |
>20Cycles
>100,000Cycles |
| insulator |
Elongation |
JIS-K-6732 |
Min60% above 60% |
| Tensile strength |
JIS-K-6732 |
Min3.5Kg/sq.mm above 3.5Kg/sq.mm |
| Abrasion test |
Ф0.5mm, 600g
60cyc./min |
>10,000Cycles |
| Burning test |
UL758 |
pass UL vw-1 |
| Time of plugging |
|
≥20times |
D. Flexible Flat Cable (FFC) Shape
