A desktop database of common transistors with electrical characteristics, package types, and pinouts. Type a part number to look it up; or search by vendor, package, or rating to find a substitute.
What it contains
For each part:
- Part number and manufacturer
- Type (NPN/PNP/JFET/MOSFET/IGBT etc.)
- Package (TO-92, TO-220, SOT-23, etc.) with pinout
- VCEO, VCBO, IC, PD max ratings
- hFE range
- Typical applications (audio, switching, RF, power)
What you can search
- Direct part-number lookup
- Find equivalents by similar electrical ratings
- Filter by package type when redesigning a board
- Filter by application class to find candidates for a new circuit
When you need it
- Hobbyist electronics — "what can I substitute for a 2N3904?"
- Repair work on old equipment where parts are no longer produced
- Designing a new board and comparing candidate parts
- Quick pinout lookup before soldering
- Educational reference for students
Features
- Thousands of common parts indexed
- Multi-field search
- Visual pinout reference for each part
- Portable single executable
- Works offline — no internet required after install
System requirements
- Windows 7, 8, 10, 11
- A few MB of free RAM
- About 5 MB of disk space