2SA1668 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -200 V
• Collector-Base Voltage, max: -200 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -2 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 60
• Transition Frequency, min: 20 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.Sometimes the "2S" prefix is not marked on the package - the 2SA1668 might only be marked "A1668".The complementary NPN transistor to the 2SA1668 is the 2SC4382.You can replace the 2SA1668 with the 2SA1009-H, 2SA1009-J, 2SA1009A-H, 2SA1009A-J, 2SB630-Q, 2SB630-R, FJP1943O, FJPF1943O, MJE15035 or MJE15035G.