2SA993B Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -50 V
• Collector-Base Voltage, max: -50 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.5 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 60 to 120
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +125 °C
• Package: TO-92

The 2SA993B is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, collector, and base leads.
Here is an image showing the pin diagram of this transistor.The 2SA993B transistor can have a current gain of 60 to 120. The gain of the 2SA993 will be in the range from 60 to 320, for the 2SA993C it will be in the range from 100 to 200, for the 2SA993D it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SA993B might only be marked "A993B".The complementary NPN transistor to the 2SA993B is the 2SC2277B.The 2SA1518 (SOT-23), 2SA1519 (SOT-23), 2SA1520 (SOT-23), 2SA1521 (SOT-23), FMMTA55 (SOT-23) and KST55 (SOT-23) is the SMD version of the 2SA993B transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA993B with the 2SA1283, 2SA1284, 2SA1522, 2SA1523, 2SA1524, 2SA1525, 2SA1526, 2SA1527, 2SA1528, 2SA1529, 2SA984, 2SA984-D, 2SA984K, 2SA984K-D, 2SB560, 2SB560-D, 2SB647, 2SB647A, 2SB647AB, 2SB647B, 2SB764, 2SB764-D, BC638, BC640, KSA708C, KSA931, KTA708, KTA708-O, KTB764 or KTB764-O.