2SA1285-F 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): 250 to 500
• 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-F transistor can have a current gain of 250 to 500. The gain of the 2SA1285 will be in the range from 150 to 800, for the 2SA1285-E it will be in the range from 150 to 300, 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-F might only be marked "A1285-F".The complementary NPN transistor to the 2SA1285-F is the 2SC3245-F.The 2SA1163 (SOT-23), 2SA1312 (SOT-23), 2SA1587 (SOT-323), FJV992 (SOT-23) and FJX992 (SOT-323) is the SMD version of the 2SA1285-F transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1285-F with the 2SA1049, 2SA1082, 2SA1082-D, 2SA1085, 2SA1085-D, 2SA1269, 2SA1285A, 2SA1285A-F, 2SA1376 or 2SA970.