2SA1285-E Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.1 A
• Collector Dissipation: 0.9 W
• DC Current Gain (h_fe): 150 to 300
• Transition Frequency, min: 200 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92MOD

Here is an image showing the pin diagram of this transistor.The 2SA1285-E transistor can have a current gain of 150 to 300. The gain of the 2SA1285 will be in the range from 150 to 800, for the 2SA1285-F it will be in the range from 250 to 500, for the 2SA1285-G it will be in the range from 400 to 800.Sometimes the "2S" prefix is not marked on the package - the 2SA1285-E might only be marked "A1285-E".The complementary NPN transistor to the 2SA1285-E is the 2SC3245-E.You can replace the 2SA1285-E with the 2SA1275, 2SA1285A, 2SA1285A-E, 2SA1319, 2SA1370, 2SA1376, 2SA1376A, HSB1109S, KSA1013, KSA709C or KTA1275.