Vishay CDMM high-voltage divider. Click for a larger image. (Source: Vishay)
Vishay Intertechnology, Inc. has claimed the industry’s first high-voltage chip divider in a ribbed molded package with compliant surface-mount leads. The Vishay Techno CDMM series chip dividers are reported to improve TC tracking performance and ratio stability as well as reduce component counts in automotive and industrial equipment.
Consisting of two resistors integrated into one molded package, the chip divider provides a single-component replacement for multiple discrete resistors used in voltage divider applications. The high-voltage chip divider delivers a maximum working voltage of 1500 V in the 4527 case size. The AEC-Q200 qualified device targets 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 kΩ to 50 MΩ, with maximum resistance ratios to 500:1 and tolerances down to ±0.5 %. Other key specs include a temperature coefficient of ±100 ppm/°C (not in datasheet) and TCR tracking as low as ± 10 ppm/°C. Compliant with IEC 60664-1, the device offers a 12.5-mm creepage distance and is rated at 1250 V.
Vishay CDMM high-voltage divider working voltage compared to standard chips. (Source: Vishay Intertechnology)
Samples and production quantities of the CDMM chip dividers are available now, with lead times from stock to 12 weeks. The chip divider is sulfur-resistant, RoHS-compliant, and halogen-free.
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