MJE243G Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 100 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 15 W
• DC Current Gain (h_fe): 40 to 180
• Transition Frequency, min: 2 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the MJE243G is the MJE253G.The BDP953 (SOT-223) is the SMD version of the MJE243G transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the MJE243G with the BD791, MJE243 or MJE244.