2N3251 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -40 V
• Collector-Base Voltage, max: -50 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.2 A
• Collector Dissipation: 0.36 W
• DC Current Gain (h_fe): 100 to 300
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-18

Here is an image showing the pin diagram of this transistor.The complementary NPN transistor to the 2N3251 is the 2N3947.The 2SA1162 (SOT-23), 2SA1586 (SOT-323), 2SA1832 (SOT-23), 2SA812 (SOT-23), FJX733 (SOT-323), KSA812 (SOT-23), KTA1504 (SOT-23), KTA1504S (SOT-23) and TMBT3906 (SOT-23) is the SMD version of the 2N3251 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2N3251 with the 2N2907, 2N2907A, BCY70, BCY71 or NTE159M.