High voltage chip divider improves temperature co-efficient tracking, says Vishay

Designed with a ribbed, moulded package, the Vishay Techno CDMM is a high voltage chip divider by Vishay Intertechnology. It reduces component count and improves temperature co-efficient tracking, claims the company.

It is believed to be the industry’s first high voltage chip divider to be offered in a ribbed molded package with compliant surface mount leads. It is designed to reduce component counts and improve temperature co-efficient tracking performance and ratio stability in automotive and industrial equipment. The CDMM delivers a maximum working voltage of 1500V in the 4527 case size.

There are two resistors integrated into one moulded package, developed as a  single component replacement for multiple discrete resistors used in voltage divider applications. The space-saving, AEC-Q200-qualified device is optimised for high power DC/DC converters and inverters in electric vehicles and heavy industrial equipment and buses.

The CDMM offers a wide resistance range from 500 kOhm to 50 MOhm, with maximum resistance ratios to 500:1 and tolerances down to ± 0.5 per cent. Sulphur-resistant, RoHS-compliant, and halogen-free, the chip divider features a temperature co-efficient of ± 100 ppm per degree C and temperature co-efficient resistance (TCR) tracking as low as ± 10 ppm per degree C. Compliant with IEC 60664-1, the CDMM offers a 12.5mm creepage distance and is rated at 1250V.

Samples and production quantities of the CDMM series are available now, with lead times of stock to 12 weeks.

Vishay claims to manufacture one of the world’s largest portfolios of discrete semiconductors and passive electronic components for designs in the automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical markets.


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