2SA1667 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -150 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 2SA1667 might only be marked "A1667".The complementary NPN transistor to the 2SA1667 is the 2SC4381.You can replace the 2SA1667 with the 2SA1668, 2SA1859, 2SA1859A, 2SA1930, 2SB546-O, 2SB546-Y, 2SB546A-K, 2SB546A-L, 2SB630-Q, 2SB630-R, 2SB861, 2SB861B, 2SB861C, 2SB940, 2SB940-P, 2SB940-Q, 2SB940A, 2SB940A-P, 2SB940A-Q, BDX54F, FJP1943O, FJPF1943O, KSB546-O, KSB546-Y, KTB1369, KTB1369O, KTB1369Y or NTE398.