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High precision, surface mount Z-foil resistor

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article image Breakthrough level of stability.

VISHAY Intertechnology, represented by Braemac , has announced the release of the VSMP1206 high-precision, surface-mount, Bulk Metal Z-foil resistor, that combines a high power rating of 300mW, load life stability of 0.01%, and a low nominal TCR of ±0.5ppm/°C in an industry-standard, surface-mount package.

Under varying ambient temperatures and current loads, the Bulk Metal Z-foil technology that Vishay pioneered offers a breakthrough level of stability, more than an order of magnitude better than competing technologies.

The use of Z-foil dramatically reduces changes in resistance caused by current variation in power resistors and current-sensing resistors with low TCR and thermal resistance, allowing for much-improved measurement capabilities.

The Z-foil technology provides an inherently low and predictable ±0.5ppm/°C TCR nominal. At its high power rating of 300mW at 70°C, the VSMP1206 has a uniquely low load life stability of ±0.01%, and an even lower ±0.005% load life stability at 200mW.

Conventional full wrap-around robust terminations ensure safe handling during the manufacturing process and stability during a lifetime of thermal cycles.

The VSMP1206 has a resistance range of 10W to 30kW and tight tolerance to ±0.01%. Tighter tolerances are available by request to Vishay's application engineers at Foilsupport2@Vishay.com.

Because of the improved performance that results from the use of Bulk Metal Z-foil, the VSMP1206 is well-suited for precision analogue applications in industrial, medical, military, and airborne end products including metering systems, head-up displays, and electron beam systems.

A voltage divider can be fashioned by using two arbitrarily selected VSMP1206 resistors with a resultant tracking specification of less than 3ppm/°C, or even below 1ppm/°C upon request.

The VSMP1206 is a surface-mount chip resistor measuring just 3.20mm by 1.57mm with an 0.64mm height profile, maximum weight of 11mg, and choice of lead-free or tin/lead alloy terminals. Its small size and surface-mount construction allow designers to easily upgrade existing designs.

Available in waffle-pack and tape-and-reel packaging, samples and production quantities of the VSMP1206 resistor are available now. Lead time for production quantities is approximately six weeks.

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