2SA1381-F Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -300 V
• Collector-Base Voltage, max: -300 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.1 A
• Collector Dissipation: 7 W
• DC Current Gain (h_fe): 160 to 320
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SA1381-F transistor can have a current gain of 160 to 320. The gain of the 2SA1381 will be in the range from 40 to 320, for the 2SA1381-C it will be in the range from 40 to 80, for the 2SA1381-D it will be in the range from 60 to 120, for the 2SA1381-E it will be in the range from 100 to 200.Sometimes the "2S" prefix is not marked on the package - the 2SA1381-F might only be marked "A1381-F".The complementary NPN transistor to the 2SA1381-F is the 2SC3503-F.The BF621 (SOT-89), BF821 (SOT-23) and PMBTA92 (SOT-23) is the SMD version of the 2SA1381-F transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1381-F with the 2SA1353, 2SA1353-F, 2SA1479, 2SA1479-F, 2SA1480, 2SA1480-F, KSA1381 or KSA1381-F.