Date: 21/12/2010

Metal Film Resistors with temp coefficient of ±5ppm/°C and tolerances of 0.01%

Vishay Intertechnology, Inc. has made available a new surface-mount series of high-precision, high-stability metal film resistors in the 2012 and 4527 case sizes. These PSF resistors feature very low temperature coefficients down to ± 5 ppm/°C and tight tolerances to 0.01 %.

Offering circuit designers a surface-mount version of Vishay's axial-leaded PTF series, the PSF devices are optimized for high-precision applications in precision test and measurement systems and military, aerospace, and industrial equipment and instrumentation.

Measuring 0.200 in. by 0.125 in. [5.08 mm by 3.18 mm] with a 0.096 in. [2.44 mm] profile, the PSF2012 offers a 0.125 W power rating and 200 V working voltage. The PSF4527 measures 0.455 in. by 0.275 in. [11.56 mm by 6.98 mm] with a 0.167 in. [4.24 mm] profile, and features a 0.25 W power rating and 300 V working voltage.

The device offers compliant wraparound terminations that eliminate the risk of solder fillet cracking due to differences in coefficient of thermal expansion (CTE), as well as a rugged molded encapsulation to optimize performance in harsh environments. The resistors operate over a temperature range of -55°C to + 150°C.

Device Specification Table:Part # Power rating Max. working voltage Temperature coefficient
(± ppm/°C) Tolerance
(± %) Resistance range (O)
PSF2012 0.125 W 200 V 5, 10, 15, 25 0.01, 0.02, 0.05, 0.1, 0.25, 0.5, 1 15 to 100 k
PSF4527 0.25 W 300 V 5, 10, 15, 25 0.01, 0.02, 0.05, 0.1, 0.25, 0.5, 1 15 to 500 k


Lead Time: 15 to 18 weeks.

Editorial Product Rating: *** (High Value)