Frothingham Electronics Corporation diode testers are used worldwide by leading diode manufacturers and independent testing labs.

The aerospace industry and military suppliers rely on our diode testers and scanners. Increasingly, automobile alternator re-manufacturers are using our equipment for testing alternator rectifers.

FEC's industrial diode testers and scanners, such as the FEC200E Diode Tester, are known for their easy-to-use software, flexibility, affordability and reliability.

FEC diode testers are engineered and manufactured in Wakefield, New Hampshire, USA. Frothingham diode testers are all built to test diodes within MIL-SPEC 19500 and have been specifically designed to test zeners, rectifiers, bridges, signal diodes, thyristors, current regulators and TVS diodes.

This site offers specifications on our range of testers and information for test operators. We are developing a customer support section of the site that includes technical manuals, schematics and troubleshooting tips for our products.