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Passives

Resistor Colour Code

SMD Resistor Code

SMD Capacitor Code

Capacitor Voltage Code

Identification

Date Code Decoder

Package Identifier

Manufacturer Prefix

Markings

Transistor / IC Marking

Identification

Manufacturer Prefix

Longest-prefix match of a part number to manufacturer.

Part Number

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Pure formulas & standard tables — nothing stored, works offlineAlways verify against datasheets for production use