Texas Instruments TIP33A NPN Power Transistor TO-220 Italy
Full Description & History
Original Texas Instruments TIP33A NPN silicon power transistor manufactured in Italy and housed in the industry-standard TO-220 package. The TIP33A is a rugged general-purpose power transistor commonly used in power supplies, motor controls, audio amplifiers, voltage regulators, switching circuits, industrial electronics, and educational projects. This device has been professionally tested and verified functional with strong gain, excellent saturation characteristics, and no measurable leakage.
HISTORICAL NOTE:The TIP33 series became a popular power transistor family during the growth of solid-state industrial and consumer electronics. Texas Instruments produced these devices for applications requiring moderate power handling, reliability, and easy mounting in the widely adopted TO-220 package.
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
Compatible Radios / Boards
Power Supplies, Voltage Regulators, Audio Amplifiers, Motor Controls, Industrial Electronics, Switching Circuits, Educational Projects, Electronics Repair, Semiconductor Collection, General Purpose Power Applications
RF Boneyard Bench Notes
RF Boneyard Bench Notes
Tester Lead Mapping:
Red-C Green-E Blue-B
Bench Measurements:
NPN Silicon BJT
hFE=157 at Ic=4.99mA
Vbe=0.551V at Ib=1.00mA
Vbe=0.610V at Ib=5.00mA
VceSat=0.011V at Ic=5.0mA and Ib=1.00mA
IcLeak=0.000mA
PASS - Semiconductor analyzer testing completed successfully.
PASS - Strong gain measurement of hFE 157 recorded.
PASS - Excellent VceSat measurement of 0.011V recorded.
PASS - No measurable collector leakage detected.
Vintage Texas Instruments TIP33A transistor exhibiting strong gain and excellent leakage characteristics. Suitable for repair, restoration, experimentation, and replacement applications.
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