E3PCB has been implementing circuit boards fabrication procedures stringently conforming to IPC-compliant guidelines and regulations in order to ensure their highest reliability and best performance in our clients’ projects. Therefore, we have to cater to tight tolerances in PCB manufacturing process.
Specific tolerances for each detail of PCB printing are listed in the following tables.
| Via Type | Via Diameter | Tolerance |
|---|---|---|
| PTH (Plated Thru-hole) | ≤0.8mm | ±0.08mm |
| PTH | >0.8mm, <2.5mm | ±0.1mm |
| PTH | >2.5mm, ≤6.3mm | ±0.15mm |
| PTH | >6.3mm | ±0.2mm |
| NPTH (Non-plated Thru-hole) | ≤0.8mm, >0.8mm, ≤6.3mm | ±0.05mm |
| NPTH | >6.3mm | ±0.2mm |
| Paper based PCB | ≤0.8mm | ±0.1mm |
| Paper based PCB | >0.8mm | ±0.2mm |
| PTH slots | <10.0mm | ±0.2mm |
| PTH slots | ≥10.0mm | ±0.3mm |
| NPTH slots | <10.0mm | ±0.15mm |
| NPTH slots | ≥10.0mm | ±0.2mm |
| Dimension | Range | Tolerance |
|---|---|---|
| Board thickness (finished) | ≤1.0mm | ±0.10mm |
| Board thickness (finished) | ≤1.6mm, >1.0mm | ±0.14mm |
| Board thickness (finished) | ≤2.0mm, >1.6mm | ±0.18mm |
| Board thickness (finished) | ≤2.4mm, >2.0mm | ±0.22mm |
| NPTH (Non-plated Thru-hole) | ≤3.0mm, >2.4mm | ±0.25mm |
| Board thickness (finished) | >3.0mm | ±10% |
| Lamination thickness | / | ±8% |
| Board size (finished) | / | ±0.1mm-±0.3mm |
| Item | Specific Aspect | Tolerance |
|---|---|---|
| Hole location tolerances | Drilling | ±0.18mm |
| Hole location tolerances | Milling | ±0.15mm |
| V-cut | V-cut remain thickness | ±0.1mm |
| Bevelling | Bevelling angle | ±5° |
| Edge milling | Ordinary parts | ±0.13mm-±0.4mm |
| Edge milling | Internal slot | ±0.20mm |
| Edge milling | Card slot | ±0.15mm |
| Countersink counterbore | Depth | ±0.20mm |
| Countersink counterbore | Angle | ±5° |
Note: Tolerances listed in tables below belong to standard category, they don’t remain unchanged or fixed forever. E3PCB can meet tighter tolerances due to higher requirements on your custom PCB projects. Just tell us your special requirements here, we’ll provide a practical solution very quickly.
Need PCBs with specific tolerance? Reach E3PCB for practical pcb manufacturing solution. In the meanwhile, you may click below button to get a rough price on your PCB fabrication.
