Precision resistors in automotive grade

28 February 2022 Passive Components

Vishay has enhanced its MC AT precision series of automotive-grade thin-film chip resistors with a wider range of resistance values in the 0402, 0603 and 0805 case sizes. The devices combine their high resistance values with TCR of ±25 ppm/K, tight tolerances of ±0,1% and thin-film stability.

The MCS 0402 AT, MCT 0603 AT and MCU 0805 AT offer resistance values from 47 Ω to 1 MΩ, 2 MΩ and 7,5 MΩ, respectively. They join the previously enhanced MCA 1206 AT, which offers resistance up to 10 MΩ. By providing higher resistance values in smaller case sizes, the devices save space by replacing larger components and reduce costs by eliminating the need for multiple lower-ohmic resistors connected in series.

Robust against moisture and temperature cycling and with advanced sulphur resistance in accordance with ASTM B 809, the devices are designed to deliver stable performance under harsh environmental conditions in automotive, industrial, medical and telecommunications equipment. Typical applications will include DC/DC converters, DC-linking and voltage dividers for battery management systems, on-board and on-wall chargers, power inverters, e-compressors and transimpedance amplifier networks.

MC AT precision series resistors feature operating voltages from 50 V to 200 V and power ratings from 100 mW to 400 mW at +70°C ambient temperature. They operate over a -55°C to +155°C temperature range and are AEC-Q200 qualified and RoHS-compliant.

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