Basic In Circuit Transistor Tester NPN / PNP 2 x LED [ Unassembled kit ]

Mosquito repeller 3VDC un-assembled circuit KIT for student [ Unassembled kit ]

RADIO SHACK MICRONTA DYNAMIC TRANSISTOR TESTER CHECKER NPN PNP 22-025

10PCS MRF947BT1 SOT-322 MOTOROLA NPN Silicon High-Frequency Transistor NEW R2

Vtg EMC Model 212 Transistor Tester PNP NPN Gain Leakage Meter w/ Leads Untested

50PCS BC546 TO-92 NPN 65V 0.1A Transistor BC546