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IEC 60301: Resistor and Capacitor Lead Terminations — Standardized Dimensions for Axial and Radial Leads
Why Every ¼W Resistor Has 0.5mm Leads — Standardized Lead Termination Dimensions
IEC 60301:2012 specifies resistor and capacitor lead termination standardized dimensions. Every PCB hole matches lead diameter — 0.5mm lead → 0.8mm hole (0.3mm soldering clearance). The common foundation for automated insertion and hand soldering.
TNLab — Lead standardization enables billions of components to flow seamlessly through PCB lines worldwide.
