Vishay Foil Resistors has released the VSMP series of ultra-high-precision, surface-mount Bulk Metal Z Foil (BMZF) resistors, the industry's first devices to provide high power ratings up to 750 mW at 70°C with long-term stability down to ±0.005%, very low typical TCR of less than ±0.2 ppm/°C, excellent PCR of ±5 ppm at rated power, and tight tolerance of ±0.01%.
These resistors are designed for applications in which ultra-precise, ultra-stable, ultra-reliable resistors with an extremely low total error budget are required under load and extreme environmental conditions. The many end products that the VSMP series resistors are intended for include automatic test equipment; high-precision instrumentation; laboratory, industrial, and medical equipment; high-end stereos; electron beam scanning and recording equipment including electron microscopes; and military, space, airborne, and down-hole instruments and communications systems.
Vishay's revolutionary Bulk Metal Z Foil technology provides a significant reduction of the resistive component's sensitivity to ambient temperature variations and applied power changes. This breakthrough level of stability, more than an order of magnitude better than that offered by thin film technology, allows designers to guarantee a high degree of accuracy in fixed-resistor applications.