Key benefits Fast, reliable component characterization: quickly identify transistor and MOSFET parameters you need for troubleshooting, prototyping, or repair. Eliminates guesswork: automatic pin detection and on-screen results remove manual probing and reduce testing errors. Flexible power options for field or bench work: runs from a standard 9V battery or from two Li‑ion cells configured as an 8.4V pack for extended runtime. What it does (functions) Measures bipolar transistor current gain (hFE) and base-emitter threshold voltage (Vbe). Measures MOSFET gate threshold voltage and gate capacitance. Automatically detects and displays a component’s pin arrangement on a 128 x 64 backlit LCD. Key attributes Power: operates from a 9V battery; supports two Li‑ion batteries wired to form an 8.4V supply for longer operation. Display: 128 x 64 backlit LCD that clearly shows detected pinouts and measurement results. Performance: provides direct, on-device measurement of hFE, Vbe, MOSFET threshold, and gate capacitance so you can make faster, data-driven decisions. Why customers need it Saves time when sorting or verifying transistors and MOSFETs by combining automatic pin identification with the essential electrical measurements on one instrument. Reduces component damage risk compared with guess-and-probe methods by confirming pinouts before applying signals. Portable and battery-powered for use in workshops, field service, or classroom settings. Common use scenarios Repair and maintenance: quickly identify faulty transistors and MOSFETs and confirm replacements by testing gain, thresholds, and gate capacitance. Electronics prototyping: validate component behavior (hFE, Vbe, MOSFET threshold) before integrating parts into new circuits. Education and training: demonstrate transistor and MOSFET characteristics and teach practical testing techniques using the automatic pin-detect and on-screen readouts. What to expect in use Insert the component, let the unit auto-detect pins, and read hFE, Vbe, gate threshold, or gate capacitance directly on the backlit 128 x 64 display. Choose standard 9V battery for quick setups or use two Li‑ion cells as an 8.4V pack when longer continuous operation is required. This tester focuses on essential transistor and MOSFET parameters with clear on-device feedback and flexible power options to support diagnostics, development, and education without unnecessary complexity.