Date: 10/06/2010

New thin film wraparound chip resistors from Vishay

Vishay introduced a new series of ESCC-4001/023-qualified, R-failure-rate, thin film wraparound chip resistors. The PFRR resistors are claimed to be the industry's first such devices to offer TCR down to 10 ppm/°C and tolerances to 0.05 %

The Vishay Sfernice resistors are suggested for high-reliability military, aerospace, and medical applications with stringent performance requirements. These resistors offer load-life stability of 0.25 % at ± 70 degC for 8000 hours at rated power. Vishay says that the established reliability is assured through 100 % screening and extensive environmental lot testing, through which the devices have been rated for an "R" failure rate level (0.01% per 1000 hours). These devices are offered in four case sizes with on-resistance from 100ohm to 3.01Mohm. The devices are designed for low-noise applications including precision measurement of loop voltage, blood pressure, and oxygen levels; voltage comparators; plus acoustic and telecommunication equipment in satellites, missiles, submarines, aircraft, blood pumps, and blood monitoring test devices.

The PFRR resistors features SnPb terminations over a nickel barrier layer to enable operation at temperatures up to + 155degC and an alumina substrate for high power ratings to 0.50 W at 70degC. These resistors also offer low noise of less than - 35 dB and a low voltage coefficient of less than 0.01 ppm/V. They are offered in waffle pack or tape-and-reel packaging, and are halogen free according to IEC 61249-2-21.


Device Specifications TablePart # PFRR 0603 PFRR 0805 PFRR 1206 PFRR 2010
Power rating 0.1 W 0.125 W 0.25 W 0.50 W
On-resistance 100 O to 261 kO 100 O to 301 kO 100 O to 1 MO 100 O to 3.01 MO
TCR ± 10 ppm/°C; ± 25 ppm/°C;
Tolerance ± 0.05 %; ± 0.1 %
Temp. range - 55 °C to + 155 °C



Availability: Now

To know more visit: http://www.vishay.com