2SB686 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -100 V
• Collector-Base Voltage, max: -100 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -6 A
• Collector Dissipation: 60 W
• DC Current Gain (h_fe): 55 to 160
• Transition Frequency, min: 10 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3P

Here is an image showing the pin diagram of this transistor.The 2SB686 transistor can have a current gain of 55 to 160. The gain of the 2SB686-O will be in the range from 80 to 160, for the 2SB686-R it will be in the range from 55 to 110.Sometimes the "2S" prefix is not marked on the package - the 2SB686 might only be marked "B686".The complementary NPN transistor to the 2SB686 is the 2SD716.The BDP954 (SOT-223) is the SMD version of the 2SB686 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB686 with the 2SA1093, 2SA1103, 2SA1104, 2SA1105, 2SA1106, 2SA1146, 2SA1186, 2SA1264, 2SA1264-O, 2SA1264N, 2SA1264N-O, 2SA1265, 2SA1265-O, 2SA1301, 2SA1302, 2SA1303, 2SA1386, 2SA1386A, 2SA1386A-O, 2SA1386A-P, 2SA1386A-Y, 2SA1490, 2SA1491, 2SA1492, 2SA1516, 2SA1694, 2SA1695, 2SA1804, 2SA1805, 2SA1940, 2SA1941, 2SA1942, 2SA2120, 2SA2121, 2SA2151, 2SB1429, 2SB688, 2SB695, 2SB778, 2SB863, BD246C, BD250C, BDV96, FJA4210, KTB688, KTB688B, KTB778, NTE2329 or TIP36CA.