KST55 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: 0.35 W
• DC Current Gain (h_fe): 50
• Transition Frequency, min: 50 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-23

Here is an image showing the pin diagram of this transistor.The KST55 transistor is marked as "2H".The complementary NPN transistor to the KST55 is the KST05.You can replace the KST55 with the 2STR2160, BCW89, FMMT2907A, FMMT2907AR, FMMT551, FMMT591, FMMT591Q, FMMTA55, FMMTA56, KN2907AS, KST2907A, KST56, KTN2907AS, MMBT2907A, MMBT4354, MMBT4355, MMBT4356, MMBTA55, MMBTA56, PMBT2907A, PMBTA56, PMST2907A, SMBTA55 or SMBTA56.