2SD837-Q Bipolar Transistor

Characteristics of 2SD837-Q Transistor

  • Type: NPN
  • Collector-Emitter Voltage, max: 60 V
  • Collector-Base Voltage, max: 60 V
  • Emitter-Base Voltage, max: 5 V
  • Collector Current − Continuous, max: 4 A
  • Collector Dissipation: 40 W
  • DC Current Gain (hfe): 2000 to 5000
  • Operating and Storage Junction Temperature Range: -55 to +150 °C
  • Package: TO-220

Pinout of 2SD837-Q

Here is an image showing the pin diagram of this transistor.

Classification of hFE

The 2SD837-Q transistor can have a current gain of 2000 to 5000. The gain of the 2SD837 will be in the range from 1000 to 10000, for the 2SD837-P it will be in the range from 4000 to 10000, for the 2SD837-R it will be in the range from 1000 to 2500.


Sometimes the "2S" prefix is not marked on the package - the 2SD837-Q might only be marked "D837-Q".

Complementary PNP transistor

The complementary PNP transistor to the 2SD837-Q is the 2SB751-Q.

SMD Version of 2SD837-Q transistor

The FZT692B (SOT-223) is the SMD version of the 2SD837-Q transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.

Replacement and Equivalent for 2SD837-Q transistor

You can replace the 2SD837-Q with the 2N6043, 2N6043G, 2N6044, 2N6044G, 2N6045, 2N6045G, 2N6387, 2N6387G, 2N6388, 2N6388G, 2N6530, 2N6531, 2N6532, 2N6533, 2SC1985, 2SC1986, 2SC2075, 2SC2315, 2SC2316, 2SC3145, 2SC3179, 2SD1190, 2SD1191, 2SD1192, 2SD1195, 2SD1196, 2SD1274, 2SD1274A, 2SD1274B, 2SD1276, 2SD1276-Q, 2SD1276A, 2SD1276A-Q, 2SD1277, 2SD1277-Q, 2SD1277A, 2SD1277A-Q, 2SD1414, 2SD1415, 2SD1415A, 2SD1825, 2SD1826, 2SD1827, 2SD1829, 2SD1830, 2SD2241, 2SD560, 2SD560-MB, 2SD633, 2SD634, 2SD635, 2SD823, 2SD837A, 2SD837A-Q, BD203, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD539D, BD543A, BD543B, BD543C, BD545A, BD545B, BD545C, BD645, BD647, BD649, BD651, BD797, BD799, BD801, BD807, BD809, BD897, BD897A, BD899, BD899A, BD901, BD949, BD951, BD953, BD955, BDT61, BDT61A, BDT61B, BDT61C, BDT63, BDT63A, BDT63B, BDT63C, BDT65, BDT65A, BDT65B, BDT65C, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDW23A, BDW23B, BDW23C, BDW40, BDW41, BDW41G, BDW42, BDW42G, BDW43, BDW53A, BDW53B, BDW53C, BDW53D, BDW63A, BDW63B, BDW63C, BDW63D, BDW73A, BDW73B, BDW73C, BDW73D, BDX33A, BDX33B, BDX33BG, BDX33C, BDX33CG, BDX33D, BDX53A, BDX53B, BDX53BG, BDX53C, BDX53CG, BDX53D, BDX77, D44H11, D44H11FP, D44H8, KSB601, KSB601-R, KSD560, KSD560-R, MJE15028, MJE15028G, MJE800T, MJE801T, MJE802T, MJE803T, MJF122, MJF122G, TIP100, TIP100G, TIP101, TIP101G, TIP102, TIP102G, TIP120, TIP120G, TIP121, TIP121G, TIP122, TIP122G, TIP130, TIP130G, TIP131, TIP131G, TIP132, TIP132G, TIP140T, TIP141T, TIP142T, TIP41D, TIP42D or TTD1415B.
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