• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Wire and Film Technologies Division

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

Commercial Styles

Semi-Precision

Power Wirewound Resistors

Temperature Range

Characteristic U = -55°C to +275°C

Characteristic V = -55°C to +350°C

Standard Temperature Coefficient

±20 ppm/°C 10

Ω up

±50 ppm/°C 1.0

Ω to 9.9Ω

±400 ppm/°C 0.50

Ω to 0.999Ω

±650 ppm/°C 0.1

Ω to 0.490Ω

Special Temperature Coefficient

Available from -30 ppm/°C to +6000 ppm/°C

Temperature range for special TC’s -50°C to +150°C

Insulation Resistance

1000 megohms minimum dry at 100 volts DC

Derating

Wattage rating based on operation at 25°C

Derate to zero at 275°C & 350°C for "U" and "V" style rating

Lead Material:

Tinned copperweld is standard.

Also available: Weldable Grade A nickel (bare)

Special Features:

- Radial lead available

- Resistance network packages designed to individual customer requirements

- Temperature coefficient matching and tracking to ±5 ppm

- High thermal conductivity core (Beryllium Oxide) available. See B Series.

- Ratio tolerance matched sets available

General Specifications

T Wirewound Series Issue December 2008 Sheet 2 of 4