BD186 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -30 V
• Collector-Base Voltage, max: -40 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -4 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 40
• Transition Frequency, min: 2 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The complementary NPN transistor to the BD186 is the BD185.You can replace the BD186 with the 2N6034, 2N6034G, 2N6035, 2N6035G, 2SA2196, 2SA2197, 2SB1143, 2SB1143-R, 2SB1143-S, 2SB1143-T, 2SB1143-U, 2SB1165, 2SB1165-Q, 2SB1165-R, 2SB1165-S, 2SB1165-T, 2SB1166, 2SB1166-Q, 2SB1166-R, 2SB1166-S, 2SB1166-T, 2SB986, 2SB986-R, 2SB986-S, 2SB986-T, 2SB986-U, BD188, BD190, BD436, BD436G, BD440, BD440G, BD676, BD676A, BD676AG, BD676G, BD678, BD678A, BD678AG, BD678G, BD776, BD778, BD786, BD788, BD788G, KSE700, KSE701, MJE230, MJE231, MJE233, MJE234, MJE700, MJE700G, MJE701 or MJE701G.