TD644 Specs and Replacement
Type Designator: TD644
Material of Transistor: Si
Polarity: PNP
Absolute Maximum Ratings
Maximum Collector Power Dissipation (Pc): 62.5 W
Maximum Collector-Base Voltage |Vcb|: 45 V
Maximum Collector-Emitter Voltage |Vce|: 45 V
Maximum Emitter-Base Voltage |Veb|: 5 V
Maximum Collector Current |Ic max|: 8 A
Max. Operating Junction Temperature (Tj): 200 °C
Electrical Characteristics
Forward Current Transfer Ratio (hFE), MIN: 750
Package: TO3
TD644 Substitution
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TD644 datasheet
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Detailed specifications: TD366, TD366A, TD366B, TD366C, TD367A, TD367B, TD367C, TD643, BC337, TD645, TD646, TD647, TD648, TD649, TD650, TEC8012, TEC8012D
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