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| BF420, BF422 Small Signal Transistors (NPN) TO-92 .181 (4.6) min. .492 (12.5) .181 (4.6) .142 (3.6) NPN Silicon Epitaxial Planar Transistors especially suited for application in class-B video output stages of TV receivers and monitors. FEATURES As complementary types, the PNP transistors BF421 and BF423 are recommended max. .022 (0.55) .098 (2.5) E C B MECHANICAL DATA Case: TO-92 Plastic Package Weight: approx. 0.18 g Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 C ambient temperature unless otherwise specified Symbol Collector-Base Voltage Collector-Emitter Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current Peak Collector Current Power Dissipation at Tamb = 25 C Junction Temperature Storage Temperature Range 1) Value 300 250 250 300 5 50 100 8301) 150 -65 to +150 Unit V V V V V mA mA mW C C BF420 BF422 BF422 BF420 VCBO VCBO VCEO VCER VEBO IC ICM Ptot Tj TS Valid provided that leads are kept at ambient temperature at a distance of 2 mm from case 4/98 BF420, BF422 ELECTRICAL CHARACTERISTICS Ratings at 25 C ambient temperature unless otherwise specified Symbol Collector-Base Breakdown Voltage at IC = 100 A, IB = 0 Collector-Emitter Breakdown Voltage at IC = 10 mA, IE = 0 Collector-Emitter Breakdown Voltage at RBE = 2.7 k, IC = 10 mA Emitter-Base Breakdown Voltage at IE = 100 A, IB = 0 Collector-Base Cutoff Current at VCB = 200 V, IE = 0 Collector-Emitter Cutoff Current at RBE = 2.7 k, VCE = 250 V at RBE = 2.7 k, VCE = 200 V, Tj = 150 C Collector Saturation Voltage at IC = 30 mA, IB = 5 mA DC Current Gain at VCE = 20 V, IC = 25 mA Gain-Bandwidth Product at VCE = 10 V, IC = 10 mA Feedback Capacitance at VCE = 30 V, IC = 0, f = 1 MHz Thermal Resistance Junction to Ambient Air 1) Min. 300 250 250 300 5 - Typ. - - - - - - Max. - - - - - 10 Unit V V V V V nA BF420 BF422 BF422 BF420 V(BR)CBO V(BR)CBO V(BR)CEO V(BR)CER V(BR)EBO ICBO ICER ICER VCEsat hFE fT Cre RthJA - 50 60 - - - - - - - 50 10 0.6 - - 1.6 1501) nA A V - MHz pF K/W Valid provided that leads are kept at ambient temperature at a distance of 2 mm from case |
Price & Availability of BF422
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