Design Guidance

2022-10-27 BEST

Tolerance of Flex Circuits

When you design your circuit board, you should consider manufacturing capability and tolerance, so that the facility can make your flex circuit without any question. Belowing table are normal tooling for tooling and Line Width and Space (L/S & LW).

If you would like tighter tolerance or other requirements of flexible PCB(flex circuit board), you can Contact our stuff directly, we are at your service at anytime.


Tooling Capability & Tolerance
Factor Blade Die Hard Die
S/R/D Hard Die Precision Hard Die
Lead Time 1 Day 3~5 Days 5-7 Days
Tolerance Hole Size ±0.3mm ±0.1mm ±0.05mm
Hole to hole ±0.3mm ±0.15mm ±0.10mm
Hole to Outline ±0.3mm ±0.25mm ±0.20mm
Corner Radius ±0.5mm ±0.15mm ±0.10mm
Finger Outline to Outline ±0.25mm ±0.10mm ±0.05mm
Line Width / Space Capability
Copper Single Sided FPC Double Sided FPC
Line Width/Space Tolerance Pitch (um) Line Width/Space Tolerance Pitch (um)
1OZ 3/3 ±20% 75 3/3 ±20% 75
1/2OZ 2/2 ±20% 50 2/2 ±20% 50
1/3OZ 2/2 ±1.5% 50 2/2 ±15% 50
1/4OZ 1.8/1.8 ±1.5% 40 1.8/1.8 ±15% 40