2SA1478-D Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -200 V
• Collector-Base Voltage, max: -200 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.1 A
• Collector Dissipation: 5 W
• DC Current Gain (h_fe): 60 to 120
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126F

Here is an image showing the pin diagram of this transistor.The 2SA1478-D transistor can have a current gain of 60 to 120. The gain of the 2SA1478 will be in the range from 40 to 320, for the 2SA1478-C it will be in the range from 40 to 80, for the 2SA1478-E it will be in the range from 100 to 200, for the 2SA1478-F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SA1478-D might only be marked "A1478-D".The complementary NPN transistor to the 2SA1478-D is the 2SC3788-D.The BF623 (SOT-89) and BF823 (SOT-23) is the SMD version of the 2SA1478-D transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1478-D with the 2SA1156, 2SA1156L, 2SA1352, 2SA1352-D, 2SA1353, 2SA1353-D, 2SA1380, 2SA1380-D, 2SA1381, 2SA1381-D, 2SA1406, 2SA1406-D, 2SA1407, 2SA1407-D, 2SA1479, 2SA1479-D, 2SA1480, 2SA1480-D, 2SA1540, 2SA1540-D, 2SA1541, 2SA1541-D, 2SB1110, 2SB1110-B, KSA1156, KSA1156O, KSA1381, KSA1381-D, KSE350, KTA1703, KTA1703-O, MJE350 or MJE350G.