Caddock MG Series

  • Caddock

Product Features

  • Precision high voltage through-hole resistor
  • Maximum operating voltage from 600V up to 30kV (standard series)
  • Utilises Caddock’s Micronox® resistance film for outstanding combination of performance
  • MG resistors have demonstrated stability of 0.01% per 1,000 hours in extended load life testing of standard resistance range
  • -15 series increases the maximum voltage ratings by 60% (48kV for the MG815 model)
  • Extended resistance range avilable on some models


  • Scientific Instrumentation


The MG precision high voltage axial resistor series from Caddock offers a voltage rating of up to 30kV (standard series) or 48kV (-15 variant), power rating of up 15W and a resistance range from 200Ω up to 2GΩ (standard series) or 10GΩ (extended range), all in a cylindrical axial leaded through-hole package. Caddock’s Micronox® resistance films are the source of their outstanding combination of performance features. The MG series offers tolerances from ±1.0% down to ±0.1% across the standard series or ±1.0% for both -15 and extended ranges.

  • Cylindrical high voltage axial leaded resistor
  • Available in any resistance between 200Ω and 10GΩ (Extended range, 2GΩ standard series)
  • Utilises Caddock’s Micronox® resistance film technology
  • Excellent long-term stability
  • TCR for standard resistance range of ±80 ppm/°C in combinations with resistance tolerances as tight as ±0.1%
  • Majority of models are manufactured with Caddock’s non-inductive design, other models offer low inductance
  • Maximum operating voltage from 600V up to 30kV
  • -15 variant increases the maximum operating voltages by 60% (48kV for the MG815-15 model)
  • Maximum power rating from 0.5W (MG650 model) up to 15W (MG815 model)
  • MG resistors have demonstrated stability of 0.01% per 1,000 hours in extended load life testing of standard resistance range values

The exceptional performance of the Caddock MG series has been proven through many years of use in equipment that demands the highest reliability and stability, including TWT amplifiers, X-ray systems, geophysical instruments and medical electronics.

Most models of the MG series are manufactured with Caddock’s non-inductive design which uses a serpentine resistive pattern that provides for neighbouring lines to carry current in opposite directions, thereby achieving maximum cancellation of flux fields over the entire length of the resistor. The efficient non-inductive construction is accomplished without derating of any performance advantages.

Additional options to the standard resistor range includes extended resistance values and the -15 option for increased maximum operating voltages.

The below table gives the specifications available for the complete MG resistor series:

Caddock MG Specifications

Caddock MM SpecificationsModels with low inductance construction are in shaded areas

Caddock MM Specifications Models with Caddock’s non-inductance resistance pattern are in non-shaded areas


Weight 0.00000 kg
Dimensions 0.00 × 0.00 × 0.00 mm
Minimum Resistance

Maximum Resistance

Temperature Coefficient


Power Rating

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Additional Features


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RoHS Compliant Product – Caddock

This product is available fully compliant to the RoHS EU directive 2011/65/EU and 2015/863/EU

Caddock MG Series Technical Library

We are pleased to provide you with a range of additional content including videos, product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:



Caddock MG precision high voltage resistor series datasheet
Designing with Caddock TO-style heat sink mountable power film resistors application note (AEN-0101)
Understanding the power rating of Caddock MP9100 resistors application note (AEN-0102)
Application of the type CHR high resistance precision chip resistor products application note (AEN-0103)
Terminal finish and soldering process information for Caddock resistor products application note (AEN-0104)
Caddock resistor products and the RoHS directive application note (AEN-0105)
Customer applications that are outside the scope of the RoHS directive application note (AEN-0106)
Caddock REACH compliance statement application note (AEN-0107)
Recommended solder reflow profile for Caddock surface-mount resistors application note (AEN-0108)

Caddock MG Series

Calculators and Converters

Work out what you need for your project. Go to calculators and convertors


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