Malvern, Pa. Vishay Intertechnology, Inc. claims its new family of thin-film, high-value precision single in-line resistors is the industry's first to provide a low resistance tolerance of ±0.01% over a range of 50 kΩ to 10 MΩ.
Designed for instrumentation amplifiers and precision voltage dividers in products such as medical and test equipment requiring high precision over a broad resistance range, the new HVPS series of resistors offer designers compact and readily available alternatives to the wirewound resistors previously required for such applications.
The HVPS devices also provide excellent stability of 500 ppm (2000 hours at 70°C) and temperature coefficient ratio (TCR) values of 25 ppm/°C, 15 ppm/°C, 10 ppm/°C, and an ultra-low ±5 ppm/°C.
Packaged in a 6.096 x 6.604 x 2.793-mm footprint with 2.54-mm pin spacing, the HVPS1 part is available with a working voltage of 250 V, a power rating of 0.125 W, and a resistance range of 50 kΩ to 5 MΩ. Rated for a working voltage of 300 V, a power rating of 0.250 W, and a resistance range from 100 kΩ to 10 MΩ, the HVPS2 measures 8.128 x 6.604 x 2.794-mm with a 5.08-mm pin spacing. Both resistor options are rated for an operating temperature range of -55°C to 125°C.
Constructed of a 99.6% alumina substrate, a TAMELOX (passivated nichrome) resistive element, and two copper terminals with a nickel barrier, the devices also feature a flame-resistant conformal coating that meets the UL94V-X rating to protect the epoxy body of the resistors.
Pricing for U.S. delivery is dependent on resistance value and tolerance, with a typical price of $6.90 per 100 units for devices rated at 5 MΩ with a ±0.1% tolerance. Samples are available. Delivery is ten weeks for production orders.
Call (610) 644-1300