Component Reference

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Free electronics component reference guides. Compare SMD package sizes, find standard E-series resistor values, and lookup component specifications.

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E-Series Resistor Finder

Find the closest standard resistor value from E12, E24, E48, or E96 series. Get percentage error and alternatives.

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SMD Package Size Guide

Visual comparison of SMD component package sizes. Compare 0402, 0603, 0805, 1206, SOT-23, SOIC, and more.

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