Space Approved Precision Resistor

The SMT-PW space approved current sensing precision resistor series from Isabellenhütte offers SnPb tinned connections suitable for aviation and aerospace applications being ESCC 4001/027 qualified. Designed for higher power ratings and low internal temperature rises due to the larger pad termination sizes. The MANGANIN® alloy resistance element has a resistance range of 0.004Ω to 2Ω, TCR of <±50ppm/°C at ≥0.01Ω or ±100ppm/°C at <0.01Ω over the temperature range of +22°C to +60°C (please see the table below for further information) and offers excellent long term stability. The SMT-PW model offers these capabilities in a 2817 chip size.

• Space approved current sensing precision resistor
• 2-terminal surface-mount design in a 2817 chip size
• Resistance range from 0.004Ω to 2Ω
• Tolerances of ±0.5% and ±1%
• TCR of ±50ppm/°C at ≥0.01Ω or ±100ppm/°C at <±0.01Ω (+22°C to +60°C)
• Power rating of 3W (at +130°C)
• Constant current up to 27A (0.004Ω)
• Temperature range from -55°C to +170°C
• Stability of <0.2% (T_K=130°C)
  (at rated power, deviation after 2000h according to ESCC generic specification)
• SnPb tinned connections
• ESCC 4001/027 qualified

Typical applications for the SMT-PW space approved current sensing precision resistor series include:

• Aviation and aerospace
• Current sensor for power hybrid applications
• Control systems for the automotive market
• Power modules
• Frequency converters
• Switch mode power supplies

Isabellenhütte is one of the world’s leading suppliers of high-quality precision and power resistors. They produce these low-resistance resistors for a variety of applications such as the ones above. Isabellenhütte & Rhopoint Components are your ideal partners when it comes to achieving the best possible measurement results in the smallest spaces. Please visit www.isabellenhuette.de for more information.