Texas Instruments 2N3771 NPN Power Transistor
$19.99
This genuine Texas Instruments 2N3771 NPN power transistor is housed in the rugged TO-3 metal package and was widely used in vintage audio amplifiers, laboratory instrumentation, industrial power supplies, and high-current linear regulator circuits. The desirable Texas Instruments logo marking makes this an attractive replacement part for restoration projects and vintage electronics repair.
Suitable for technicians, restorers, collectors, and service professionals maintaining classic audio equipment, industrial controls, and laboratory test equipment.
Origin Tracker
Obsolete Stock
Legacy or discontinued stock no longer in normal production flow. Future supply may be limited.
Pipeline quantities are informational and may change after arrival, inspection, sorting, testing, or donor teardown.
Compatible Radios / Boards
Vintage Stereo Receivers
Audio Power Amplifiers
Laboratory Power Supplies
Hewlett-Packard Test Equipment
Tektronix Test Equipment
Industrial DC Power Supplies
Linear Voltage Regulators
Servo Controllers
Motor Drive Circuits
Industrial Automation Equipment
RF Boneyard Bench Notes
Bench verified Texas Instruments 2N3771 NPN silicon power transistor. Tested at IC 5.01 mA with measured hFE of 110. VBE measured 0.526 V at IB 1.00 mA and 0.583 V at IB 5.00 mA. VCE(sat) measured 0.010 V at IC 5.00 mA and IB 1.00 mA. ICE leakage measured 0.000 mA. Device exhibited strong gain characteristics, normal silicon junction behavior, excellent saturation performance, and no measurable leakage during testing. Suitable for vintage audio amplifier, laboratory power supply, industrial control, and restoration applications.
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