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2SA1943-O(Q) is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists Toshiba Semiconductor and Storage. Its product description is TRANS PNP 230V 15A TO-3P. Review the specifications below when checking this part for your BOM.
The Toshiba Semiconductor and Storage 2SA1943-O(Q) is a silicon PNP power transistor housed in a TO-3PL through-hole package. It features a collector-emitter voltage of -230 V, a maximum collector current of -7 A, and a power dissipation of 180 W at 25°C case temperature. The device has a transition frequency of 28 MHz and a DC current gain ranging from 70 to 140 at -5 A collector current.
Verify the specific ordering code against the manufacturer's official documentation to ensure correct package and packing configuration. Confirm that the component meets the required absolute maximum ratings for your specific operating conditions, particularly regarding thermal management and continuous load stability.
Select this component when a high-voltage PNP transistor is required to complement an NPN device like the 2SC5200. Ensure the application design accounts for the 180 W power dissipation limit at a 25°C case temperature and provides adequate heat sinking to maintain junction temperatures within the specified 150°C maximum.
This part belongs to the 2SA series of silicon PNP transistors manufactured by Toshiba Semiconductor and Storage. It is specifically engineered for general-purpose power amplification tasks, offering robust performance characteristics suitable for demanding audio output stages where high voltage handling and current capacity are essential.
Public confirmed substitute part numbers: None identified.
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