BC639 transistor NPN TO-92-3 transistor 100V 1A JSCJ BC639

Product Overview:

A through-hole NPN silicon bipolar junction transistor housed in a standard TO-92 plastic package. Designed for medium-power amplification and switching, it is commonly used in audio amplifier output stages, load drivers, and general-purpose circuits requiring higher current handling than standard small-signal transistors. It frequently serves as the complementary NPN pair to the BC640 PNP transistor.

Core Specifications:

• Manufacturer: JSCJ (Jiangsu Changjing Electronics Technology)

• Package Type: TO-92 (TO-92-3)

• Function: NPN Transistor

• Maximum Voltage ($V_{CEO}$): 80V (Note: Maximum Collector-Base Voltage, $V_{CBO}$, is 100V)

• Maximum Current ($I_C$): 1A