Keithley Instruments Inc. 3740 28 INDEPENDENT FORM C AND 4 HIGH CURENT FORM A CARD
The Keithley 3740 is a 28-channel multiplexer module designed for use with Keithley Series 3700A System Switch/Multimeter mainframes. It provides 28 independent Form C (SPDT) relays and 4 high current Form A (SPST) relays, enabling flexible signal routing for automated test systems. The 3740 supports switching of both low-level and high-current signals, with the Form C relays rated for up to 2A and the Form A relays rated for up to 7A. The module is ideal for applications requiring a mix of general-purpose and high-current switching, such as device characterization, reliability testing, and automated measurement setups. The 3740 features screw terminal connections for secure and reliable wiring, and is fully supported by Keithleys Test Script Processor (TSP) technology for advanced automation.