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Ordering number 1797B PNP/NPN Epitaxial Planar Silicon Transistors 2SB921L/2SD1237L 80V/7A Switching Applications Applications Package Dimensions Suitable for relay drivers, high-speed inverters, unit mm converters, and other genral large current switching 2010C applications. [2SB921L/2SD1237L] Features Low collector-to-emitter saturation voltage VCE(sat)= 0.5V (PNP), 0.4V (NPN) max. Large current capacity. JEDEC TO-220AB 1 Base ( ) 2SB921L EIAJ SC-46 2 Collector 3 Emitter Specifications Absolute Maximum Ratings at Ta = 25 C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO ( )90 V Collector-to-Emitter Voltage VCEO ( )80 V Emitter-to-Base Voltage VEBO ( )6 V Collector Current IC ( )7 A Collector Current (Pulse) ICP ( )12 A Collector Dissipation PC 1.75 W Tc=25 C 40 W C Junction Temperature T