MJE243 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
• These Devices are Pb-Free and are RoHS Compliant

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the MJE243 is the MJE253.The BDP953 (SOT-223) is the SMD version of the MJE243 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the MJE243 with the BD791, MJE243G or MJE244.