Alpha Electronics

Alpha Electronics has been a manufacturer of VPG Bulk Metal® Foil resistors since 1978. Known worldwide for their accuracy and reliability, the components are widely used in a range of applications, including automatic test equipment (ATE); weighing scales; precision instrumentation; aerospace, military, laboratory and metrology, and medical systems; industrial process control; high-end audio; and more.

Alpha Electronics continues to focus on the needs of today and the requirements of the future.

Contact the Charcroft Sales Team for further information.

Standard Resistor Series | PDF  |  Ultra Precision Resistors | PDF


The RWB precision wraparound SMD resistor series from Alpha Electronics offers resistances from 10Ω up to 10kΩ, all with a small 0805 chip size. By utilising Alpha's Bulk Metal® foil resistor technology, they are able to offer low tolerances down to ±0.02% (between 1kΩ and 10kΩ) as well as a low TCR of ±2 ppm/°C (between -25°C and +125°C) from 100Ω up to 10kΩ. The Alpha RWB series also offers excellent load-life stability of ±0.005% typical (+70°C, 2000 hours at rated power).


  • Precision sense resistor
  • 4 to 20mA measurement
  • Resistance temperature detector
  • RTD sense resistor
  • High stability resistor
  • Industrial measurement resistor
  • Process control current measurement
  • High precision and stable Bulk Metal® Foil resistor with 0603, 0805 and 1206 package
  • TCR: 0±2 ppm/°C, 0±5 ppm/°C
  • Resistance tolerance: up to ±0.01%
  • Load-life stability: ±0.005% (typical, 70°C, 2000 hrs., rated power)
  • No standard resistance value (example: 1K234Ω)
  • MOQ: 100 pieces

Product Documentation

RW Series Data Sheet | PDF