Circuit & System Protection


High-temperature TVS MLVs

25 September 2019 Circuit & System Protection

The new TransGuard VT Series multilayer varistors (MLV) made by AVX are rated for transient voltage suppression (TVS) applications operating at very high temperatures. They provide reliable, bidirectional over-voltage protection across operating temperatures extending from -55°C to 175°C with zero derating across the entire range. They are qualified to AEC-Q200, and are currently available in compact, surface-mount 0603 and 0805 cases sizes.

The components also provide some broadband EMI filtering in their off state, which further extends their utility in sensitive automotive circuits by reducing the need for discrete MLCC capacitors. Application suitability for these MLVs extends to circuit protection in other markets as well, and additional performance characteristics include high current and energy handling capabilities, low leakage current, and multi-strike capabilities per IEC 61000-4-2.

The initial release of the series is comprised of 0603 MLVs with 0,1 J energy, 18 V working voltage, and 42 V clamping voltage ratings; 0603 MLVs with 0,1 J energy, 31 V working voltage, and 67 V clamping voltage ratings; 0805 MLVs with 0,3 J energy, 18 V working voltage, and 42 V clamping voltage ratings; and 0805 MLVs with 0,3 J energy, 31 V working voltage, and 65 V clamping voltage ratings.


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