2SA1049 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: 0.2 W
• DC Current Gain (h_fe): 200 to 700
• Transition Frequency, min: 100 MHz
• Noise Figure, max: 1 dB
• Operating and Storage Junction Temperature Range: -55 to +125 °C
• Package: TO-92S

Here is an image showing the pin diagram of this transistor.The 2SA1049 transistor can have a current gain of 200 to 700. The gain of the 2SA1049-BL will be in the range from 350 to 700, for the 2SA1049-GR it will be in the range from 200 to 400.Sometimes the "2S" prefix is not marked on the package - the 2SA1049 might only be marked "A1049".The complementary NPN transistor to the 2SA1049 is the 2SC2459.The 2SA1163 (SOT-23), 2SA1312 (SOT-23), 2SA1587 (SOT-323), FJV992 (SOT-23) and FJX992 (SOT-323) is the SMD version of the 2SA1049 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1049 with the 2SA1269, 2SA1285, 2SA1285A or 2SA970.