Switches, Relays & Keypads


MOSFET relay is highly sensitive

8 September 2004 Switches, Relays & Keypads

With low on-resistance and an output capacitance-resistance product of only 5 pF-Ω, the Omron G3VM-21GR allows precision measurement and high speed networking equipment to benefit from the reliability and quiet operation of optically coupled MOSFET relays. Available as a small outline, 4-pin SMD with 7,0 x 3,9 x 2,1 mm footprint, the relay combines fast switching with a high degree of miniaturisation. The G3VM-21GR is the latest addition to Omron's extensive G3VM range of solid-state relays.

The G3VM architecture features a dual MOSFET load circuit that minimises the external circuitry required to create a fully functional alternative to an electromechanical relay, and makes configuration for AC or DC loads transparent to the designer. Special attributes of the G3VM-21GR include low leakage current of 1 nA when the output relay is open. Output ratings are 20 V maximum load voltage and 160 mA continuous output current, allowing a wide variety of loads to be driven directly.

The LED input is triggered by a current of 4 mA, simplifying input drive circuitry. The low on-resistance and CR product of the G3 VM-21 GR are particularly suitable for high frequency and measurement applications including semiconductor test equipment, ATE for telecomms and networking products, sensitive data loggers and telecommunications equipment including broadband systems for customer premises and central office applications.

The wide range of models in the series ensures that a suitable relay can be selected for virtually any application.



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