Malvern, Pa. Vishay Intertechnology, Inc. claims its new VSMP1206 high-precision, surface-mount, Bulk Metal Z-foil resistor is the industry's first such device to combine a high power rating of 300 mW, load life stability of 0.01%, and a low nominal temperature coefficient of resistance (TCR) of ±0.5 ppm/°C in an industry-standard, surface-mount package.
Under varying ambient temperatures and current loads, the Vishay pioneered Bulk Metal Z-foil technology offers more than an order of magnitude better stability than competing technologies, said the company. The use of Z-foil significantly reduces changes in resistance caused by current variation in power and current-sensing resistors with low TCR and thermal resistance, enabling much-improved measurement capabilities, said the company.
The improved performance allows the new devices to be used for precision analog applications in industrial, medical, military, and airborne end products including metering systems, head-up displays, and electron beam systems.
The Z-foil technology provides an inherently low and predictable ±0.5 ppm/°C TCR nominal. At its high power rating of 300 mW 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 200 mW. Conventional full wrap-around terminations ensure safe handling during the manufacturing process and stability during a lifetime of thermal cycles.
The VSMP1206 provides a resistance range of 10 W to 30 kW and a tight tolerance to ±0.01%. (Tighter tolerances are available by request to Vishay's application engineers at Foilsupport2@Vishay.com.) In addition, a voltage divider can be produced by using two arbitrarily selected VSMP1206 resistors with a resultant tracking specification of less than 3 ppm/°C, or even below 1 ppm/°C upon request.
The VSMP1206 measures 0.126 in. x 0.062 in. (3.20 x 1.57 mm) with a 0.025-in. (0.64 mm) height profile and a maximum weight of 11 mg. Designers have a choice between lead-free or tin/lead alloy terminals.
Pricing for U.S. delivery starts at less than $4.00, depending on quantity, value, and tolerance. Available in waffle-pack and tape-and-reel packaging, samples and production quantities are available now. Delivery for production quantities is approximately six weeks.
Call (610) 644-1300