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Varistor/capacitor protects against voltage surges

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MULTI Components Pty Ltd, representing Stackpole Electronics Inc. products in Australia, has introduced a dual function device, which protects electronic equipment operating in a low voltage region against voltage surges and high frequency noise. The device replaces two components - a low voltage varistor and a capacitor, known as the MV series.

The MV series incorporates a varistor in the DC voltage range from 3V to 125V and a by-pass capacitor operating in the capacitance range of 10nF to 1000nF. It is rated from -40ºC to +85ºC and exhibits excellent response times of less than 25ns.

The varistors are square shaped components with in-line leads, requiring at least 30% less mounting space than the two components they replace. They are available in one size, 6mm x 9mm, with straight or crimped leads.

The MV series is able to withstand a single pulse surge current (Ip) of 150 amps (8/20µsec waveform) and demonstrate single pulse energy absorption (Wmax) of 0.1J to 2.5J (10/1000µsec waveform).

The MV Series is intended for protection of all sensitive electronic devices experiencing both voltage transients and high frequency noise produced by electromechanical devices such as buzzers and relays.

Applications for the MV series include: electrostatic surge absorption, relay surge suppression effect and relay reset time and piezoelectric buzzer shock noise absorption. The series is available in bulk, ammo pack and tape and reel in 2000 piece quantities.

Stackpole created the technology to reduce component count and cost, two very important considerations in this age of efficiency.

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