2SA1258 Bipolar Transistor

Characteristics of 2SA1258 Transistor

  • Type: PNP
  • Collector-Emitter Voltage, max: -60 V
  • Collector-Base Voltage, max: -70 V
  • Emitter-Base Voltage, max: -5 V
  • Collector Current − Continuous, max: -3 A
  • Collector Dissipation: 20 W
  • DC Current Gain (hfe): 2000
  • Transition Frequency, min: 200 MHz
  • Operating and Storage Junction Temperature Range: -55 to +150 °C
  • Package: TO-220

Pinout of 2SA1258

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


Sometimes the "2S" prefix is not marked on the package - the 2SA1258 might only be marked "A1258".

Complementary NPN transistor

The complementary NPN transistor to the 2SA1258 is the 2SC3144.

Replacement and Equivalent for 2SA1258 transistor

You can replace the 2SA1258 with the 2SA1259, 2SB1020, 2SB1020A, 2SB1024, 2SB1223, 2SB1224, 2SB1225, 2SB1250, 2SB1250-P, 2SB1250-Q, 2SB1251, 2SB1251-P, 2SB1251-Q, 2SB1252, 2SB1252-P, 2SB1252-Q, 2SB1626, 2SB1626-O, 2SB1626-P, 2SB1626-Y, 2SB601, 2SB601-K, 2SB601-L, 2SB601-M, 2SB673, 2SB674, 2SB675, 2SB751-P, 2SB751-Q, 2SB751A-P, 2SB751A-Q, 2SB880, 2SB881, 2SB882, 2SB950, 2SB950-P, 2SB950-Q, 2SB950A, 2SB950A-P, 2SB950A-Q, 2SB951, 2SB951-P, 2SB951-Q, 2SB951A, 2SB951A-P, 2SB951A-Q, MJF127, MJF127G, MJF6668, MJF6668G or TTB1020B.
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