engineering services, welding, diodes, test and measurement instrumentation, microwave diodes, fiber optics, field effect transistors (fet), integrated circuits (ic), hybrid integrated circuits (ic), obsolete integrated circuits (ic), hybrid microcircuits, testing, electrical testing, thyristors, transistors, bipolar transistors, thick film hybrid integrated circuits (ic), thin film hybrid integrated circuits (ic), laboratory testing, tunnel diodes available from tandex test labs, inc based in irwindale, ca. click the links below to visit our website or contact us via our profile page.