Enter Parameters
A
°C
°C
Wire Sizing Requirements
Standard Min. AWG Current Rating Additional Info
NEC (NFPA 70) — — —
NASA (MIL-STD-975) — — —
UL 758 — — —
Wire Properties
AWG Diameter (mm) Area (mm²) Resistance (Ω/km)
PCB Trace Requirements
Layer Type Min. Width (mil) Min. Width (mm) Cross-sectional Area
External (Uncoated) — — —
External (Coated) — — —
Internal — — —
PCB Design Guidelines
Parameter Recommended Value Notes
Component Lead Spacing — Based on voltage & current
Copper Thickness 1 oz/ft² (35 μm) Standard thickness
Min. Spacing (High Current) — For traces carrying > 1A
Helpful Notes
Wire Selection Tips
  • Always consider the environment (temperature, moisture, mechanical stress)
  • For long runs, voltage drop becomes significant (consider upsizing)
  • For aerospace/defense, use derating factors (typically 50%)
  • Stranded wire is preferred for applications with movement or vibration
PCB Design Tips
  • Always consider thermal management for high current traces
  • Use thermal relief connections to large copper areas
  • For critical signals, apply controlled impedance design rules
  • Consider EMI/EMC requirements when routing power and signal traces