2SA777-Q Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.5 A
• Collector Dissipation: 1 W
• DC Current Gain (h_fe): 90 to 155
• 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 2SA777-Q transistor can have a current gain of 90 to 155. The gain of the 2SA777 will be in the range from 90 to 220, for the 2SA777-R it will be in the range from 130 to 220.Sometimes the "2S" prefix is not marked on the package - the 2SA777-Q might only be marked "A777-Q".The 2SA1202 (SOT-89), 2SA1202-O (SOT-89), 2SA1368 (SOT-89), 2SA1368-D (SOT-89), 2SA1620 (SOT-23), 2SA1620-O (SOT-23), FMMTA56 (SOT-23), KST56 (SOT-23), KTA1662 (SOT-89) and KTA1662O (SOT-89) is the SMD version of the 2SA777-Q transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA777-Q with the 2N5401C, 2SA1013, 2SA1275, 2SA1284, 2SA1284-D, 2SA1315, 2SA1533, 2SA1533-Q, 2SA935, 2SA935-P, 2SA965, 2SA965-O, 2SA984K, 2SB560, 2SB647, 2SB647A, BC640, KSA1013, KSA709C, KSA916, KSA916O, KTA1023, KTA1023-O, KTA1023-Y or KTA1275.