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2SA1943RTU is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists onsemi. Its product description is TRANS PNP 250V 17A TO-264-3. Review the specifications below when checking this part for your BOM.
The onsemi 2SA1943RTU is a PNP silicon power transistor housed in a TO-264 (TO-3P) package. It features a maximum collector current of -17 A and a collector-emitter voltage rating of -250 V. The device supports a maximum power dissipation of 150 W with a minimum DC current gain (hFE) of 55. Operating temperatures range from -50°C to +150°C, with a transition frequency of 30 MHz.
Verify the specific suffix RTU against official datasheets to confirm tape-and-reel packaging versus tube variants. Ensure compatibility with existing thermal management designs due to the 150 W dissipation rating. Confirm RoHS compliance status as historical data varies by manufacturing origin. Cross-reference pinout configurations to prevent installation errors in legacy systems.
Select this component when high collector voltage and significant current drive are required in a through-hole format. Compare hFE ranges against circuit biasing requirements to ensure adequate gain. Evaluate thermal resistance characteristics relative to the intended heatsink solution. Consider complementary NPN counterparts for push-pull amplifier topologies.
This part belongs to the 2SA1943 series of high-power PNP transistors designed for demanding analog and power applications. The series is widely recognized for its use in high-end audio equipment. The TO-264 package provides a balance of electrical performance and mechanical durability for industrial and consumer electronics.
The maximum collector-emitter voltage (VCEO) is rated at -250 V.
Yes, it is specifically recommended for high-fidelity audio frequency amplifier output stages.
The device uses a TO-264 (also known as TO-3P) through-hole package.
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