Amazon.com: PNP NPN Transistors Kit, Three Pins Silicon Power Transistor Assorted Assortment Box Set Range 2N3904-MPS2907, 10Value,Pack of 200, Ltvystore : Industrial & Scientific
Level Voltage Conversion Module High Reliability 8 Channel Conversion Board NPN/PNP to NPN 5V/24V 100mA for PLC MCU Interface Matching: Amazon.com: Industrial & Scientific
BOJACK 5 Pairs 2SA1943 2SC5200 Amplifier Transistor PNP NPN High Power Black Audio SiliconTransistor TO-3PL (Pack of 10 pcs): Amazon.com: Industrial & Scientific
Hilitchi 24-Values 2N2222-S9018 / BC327-BC558 NPN PNP Power General Purpose Transistors Assortment Kit - Pack of 840: Amazon.com: Industrial & Scientific
Transistors Assortment Kit, Current Amplification PNP Transistor High Dielectric Strength for Noncontacting Switch for Controling Current: Amazon.com: Industrial & Scientific
NPN/PNP to NPN Squarewave Signal Conversion Module, Level Voltage Converter Module, for Level Conversion Single Chip Microcomputer Signal Isolation: Amazon.com: Industrial & Scientific
IIVVERR 4 Pcs 100V 8A TIP127 High Voltage Fast Switching NPN PNP Power Transistors (4 Pcs 100V 8A TIP127 Transistores de potencia NPN PNP de conmutación rápida de alto voltaje - Amazon.com