SGSF461

The SGSF461 is dsigned as one kind of fast switching hollow-emitter NPN transistors which is specially for 220V (and 117V with input doubler) off-line switching power supply applications. Hollow emitter transistors can operate up 70KHz with simple drive circuits which helps to simplify designs and improve reliability.

SGSF461 has six features. (1)High switching speed NON power transistors. (2)Hollow emitter technology. (3)High voltage for off-line applications. (4)70KHz switching speed. (5)Low cost drive circuits. (6)Low dynamic saturation. Those are all the main features.

Some absolute maximum ratings SGSF461 have been concluded into several points as follow. (1)Its collector to emitter voltage Vbe=0 would be 850V. (2)Its collector to emitter voltage Ib=0 would be 400V. (3)Its emitter to base voltage Ic=0 would be 7V. (4)Its collector current would be 15A. (5)Its collector peak current tp<5ms would be 25A. (6)Its base current would be 8A. (7)Its base peak current tp<5ms would be 15A. (8)Its total dissipation at Tc=25°C would be 125W. (9)Its storage temperature range would be from -65°C to 150°C. (10)Its junction temperature would be 150°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics SGSF461 are concluded as follow. (1)Its collector cutoff current Vbe=0 would be max 200uA. (2)Its collector cutoff current Ib=0 would be max 200uA at Vce=380V and would be max 2mA at Vce=400V. (3)Its emitter cutoff current Ic=0 would be max 1mA. (4)Its collector emitter sustaining voltage would be min 400V. (5)Its collector emitter saturation voltage would be max 1.5V. (6)Its base to emitter saturation voltage would be max 1.5V. (7)Its turn on time would be typ 1us and max 1.7us. (8)Its fall time would be typ 0.25us and max 0.5us. And so on. If you have any question or suggestion or want to know more information please contact us for details of the SGSF461. Thank you!