Electrical Engineering Toolkit

Wire Gauge

NASA (MIL-STD-975)
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UL 758
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NEC (Latest)
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Wire gauges shown in AWG with diameter in mm

Rigid PCB Trace Width

Internal Layer (IPC-2221)
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External Coated (IPC-2221)
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External Uncoated (IPC-2221)
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IPC-2221 calculations based on standard temperature rise and copper weight

Flex Circuit Trace Width

Flex Trace (IPC-2223)
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IPC-2223 calculations for flexible circuits with polyimide substrate

Additional Information

Component Lead Spacing
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Minimum Gap
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Trace Gap
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