SMBTA55 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -4 V
• Collector Current − Continuous, max: -0.5 A
• Collector Dissipation: 0.33 W
• DC Current Gain (h_fe): 100
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: SOT-23

Here is an image showing the pin diagram of this transistor.The SMBTA55 transistor is marked as "s1G".The complementary NPN transistor to the SMBTA55 is the SMBTA05.You can replace the SMBTA55 with the 2STR2160, BCW89, FMMT2907A, FMMT2907AR, FMMT591, FMMT591Q, KN2907AS, KST2907A, KTN2907AS, MMBT2907A, MMBT4355, MMBTA55, MMBTA56, PMBT2907A, PMBTA56, PMST2907A or SMBTA56.