2SA949-Y Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -150 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.05 A
• Collector Dissipation: 0.8 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 120 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92MOD

Here is an image showing the pin diagram of this transistor.The 2SA949-Y transistor can have a current gain of 120 to 240. The gain of the 2SA949 will be in the range from 70 to 240, for the 2SA949-O it will be in the range from 70 to 140.Sometimes the "2S" prefix is not marked on the package - the 2SA949-Y might only be marked "A949-Y".The 2SA1200 (SOT-89), 2SA1200-Y (SOT-89), KTA1660 (SOT-89) and KTA1660Y (SOT-89) is the SMD version of the 2SA949-Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA949-Y with the 2N5401C, 2SA1024, 2SA1024-Y, 2SA1145, 2SA1145Y, 2SA1207, 2SA1208, 2SA1275, 2SA1319, 2SA1370, 2SA1371, 2SA1624, BF421, BF423, HSB1109S, KSA1013, KSA709C, KSA709CY, KTA1024, KTA1024Y, KTA1275 or KTA1279.