BD237 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 2 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 40
• Transition Frequency, min: 3 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 BD237 is the BD238.The BCP56 (SOT-223), BCP56-10 (SOT-223), BCP56-16 (SOT-223), BCX56 (SOT-89), BCX56-10 (SOT-89) and BCX56-16 (SOT-89) is the SMD version of the BD237 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD237 with the 2N6039, 2N6039G, 2SD1509, 2SD1692, 2SD1692-K, 2SD1692-L, 2SD1692-M, 2SD1724, 2SD1724-Q, 2SD1724-R, 2SD1724-R, 2SD1724-S, 2SD1725, 2SD1725-Q, 2SD1725-R, 2SD1725-R, 2SD1725-S, BD179, BD179-10, BD179-6, BD179G, BD237G, BD379, BD379-10, BD379-16, BD379-25, BD379-6, BD441, BD441G, BD679, BD679A, BD679AG, BD679G, BD681, BD681G, BD779, BD789, BD791, KSD1692, KSD1692-G, KSD1692-O, KSD1692-Y, KSE182, KSE802, KSE803, MJE182, MJE182G, MJE240, MJE241, MJE243, MJE243G, MJE270, MJE270G, MJE802, MJE802G, MJE803 or MJE803G.