BF421

Transys Electronics LIMITED PNP SILICON PLANAR EPITAXIAL HIGH VOLTAGE VIDEO TRANSISTORS BF421 BF423 TO-92 Plastic Package High Voltage Video Amplifier ABSOLUTE MAXIMUM RATINGS(Ta=25ºC unless specified otherwise) DESCRIPTION SYMBOL Collector Emitter Voltage Collector Base Voltage Emitter Base Voltage Collector Current Continuous Power Dissipation@ Ta=25ºC Derate Above 25ºC Power Dissipation@ Tc=25ºC Derate Above 25ºC Operating And Storage Junction Temperature Range THERMAL RESISTANCE Junction to ambient Junction to case VCEO VCBO VEBO IC PD PD Tj, Tstg 423 250 250 5 500 800 6.4 2.75 22 -55 to +150 421 300 300 UNITS V V V mA mW mW/ºC W mW/ºC ºC Rth(j-a) Rth(j-c) 156 45 ºC/W ºC/W ELECTRICAL CHARACTERISTICS (Ta=25ºC Unless Otherwise Specified) DESCRIPTION SYMBOL TEST CONDITION 423 IC=1.0mA,IB=0 VCEO >250 Collector Emitter Voltage* VCBO IC=100µA.IE=0 Collector Base Voltage >250 EmitterBase Voltage Collector-Cut off Current Emitter-Cut off Current DC Current Gain Collector Emitter Saturation Voltage Base Emitter Saturation Voltage VEBO ICBO IEBO hFE VCE(sat) VBE(sat) IE=100µA, IC=0 VCB=200V,IE=0 VEB=5.0V, IC=0 IC=25mA,VCE=20V IC=20mA,IB=2mA IC=20mA,IB=2mA >5 5