2SB1109-D Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -160 V
• Collector-Base Voltage, max: -160 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.1 A
• Collector Dissipation: 1.25 W
• DC Current Gain (h_fe): 160 to 320
• Transition Frequency, min: 140 MHz
• Operating and Storage Junction Temperature Range: -50 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SB1109-D transistor can have a current gain of 160 to 320. The gain of the 2SB1109 will be in the range from 60 to 320, for the 2SB1109-B it will be in the range from 60 to 120, for the 2SB1109-C it will be in the range from 100 to 200.Sometimes the "2S" prefix is not marked on the package - the 2SB1109-D might only be marked "B1109-D".The complementary NPN transistor to the 2SB1109-D is the 2SD1609-D.The HSB1109S-D is the TO-92 version of the 2SB1109-D.You can replace the 2SB1109-D with the 2SA1142, 2SA1142P, 2SA1209, 2SA1210, 2SA1220A, 2SA1220A-P, 2SA1248, 2SA1249, 2SA1352, 2SA1352-F, 2SA1353, 2SA1353-F, 2SA1380, 2SA1380-F, 2SA1381, 2SA1381-F, 2SA1406, 2SA1406-F, 2SA1407, 2SA1407-F, 2SA1477, 2SA1478, 2SA1478-F, 2SA1479, 2SA1479-F, 2SA1480, 2SA1480-F, 2SA1507, 2SA1540, 2SA1540-F, 2SA1541, 2SA1541-F, 2SA795A, 2SB1110, 2SB1110-D, HSB1109, HSB1109-D, KSA1142, KSA1142Y, KSA1220A, KSA1220A-Y, KSA1381 or KSA1381-F.