SRT CHM 0805-HT Series

SRT CHM 0805-HT Series

The CHM 0805-HT high temperature, high ohmic non-magnetic resistor series from SRT Resistor Technology offers the same features as the CHM 0805 range, while allowing for high temperature applications of up to 300°C. The main features comprise of a wide resistance range from 100kΩ up to 1TΩ, power rating of 0.125W and voltage rating of 200V trimmed or 400V untrimmed (tolerances ≥5%), all in a small 0805 surface mount package. By utilising SRT's meander structured thick film resistor technology, these chip resistors are able to offer tolerances down to ±2% (between 100kΩ and 100MΩ) as well as a TCR of ±25 ppm/°C and a VCR as low as ±100 ppm/V (between 100kΩ and 100MΩ). The CHM 0805-HT resistor series contains no organics making them suitable for high vacuum applications and offer PtAg (platinum silver) terminations for conductive gluing and soldering.

  • Meander structured surface-mount thick film chip resistor
  • Available in any resistance between 100kΩ and 1TΩ
  • 0805 package
  • Power rating of 0.125W at +70°C
  • Voltage rating of 200V trimmed or 400V untrimmed (tolerances ≥5%)
  • Tolerances as low as ±2% over the resistance range of 100kΩ up to 100MΩ
  • TCR as low as ±25 ppm/°C over the resistance range of 100kΩ to 100MΩ
  • VCR as low as ±100 ppm/V over the resistance range of 100kΩ up to 100MΩ
  • Operating temperature from -55°C up to +300°C
  • Non-magnetic
  • PtAg (platinum silver) terminations for conductive gluing and soldering
  • Low temperature and voltage dependency
  • No organics

Custom tolerance, TCR and VCR options are available upon request. Please contact us for further information and availability.

Please see the derating curve below for the CHx-HT, CRB-HT and CBW-HT series from 0°C to +300°C:

SRT CHM-HT Derating curve

The final measuring of the resistors takes place at room temperature (independent of TCR).

Please pay attention to the interconnection technology at high temperature applications.

The below table gives full specifications for each resistor model available including the CHM 0805-HT series:

SRT CHM Specifications

1) At continuous power dissipation the dimensions of solder-pads have to secure a sufficient heat removal
2) TCR: in ppm/K; +25°C...+125°C; TCR lower than standard TCR (highest value) or value >100G: +25°C...+85°C
3) VCR: typical values, all negative, not for all TCR values available

Specifications
Additional Features
  • Meander structured high ohmic surface-mount thick film chip resistor
  • 0805 package size
  • Working temperature range of -55°C to +300°C
  • Voltage rating of 200V trimmed or 400V untrimmed (tolerances ≥5%)
  • No organics
  • PtAg (platinum silver) terminations for conductive gluing and soldering
  • Non-magnetic
  • Low temperature and voltage dependency
  • VCR as low as ±100 ppm/V (between 100kΩ up to 100MΩ)
Maximum Power Rating
  • 0.125W (at +70°C)
Maximum Resistance
  • 1TΩ
Minimum Resistance
  • 100kΩ
TCR100kΩ up to 100MΩ
  • ±25 ppm/°C
  • ±50 ppm/°C
  • ±100 ppm/°C
100MΩ up to 1GΩ
  • ±50 ppm/°C
  • ±100 ppm/°C
  • ±250 ppm/°C
1GΩ up to 10GΩ
  • ±250 ppm/°C
  • ±500 ppm/°C
10GΩ up to 100GΩ
  • ±1000 ppm/°C
  • ±2000 ppm/°C
100GΩ up to 1TΩ
  • ±2000 ppm/°C
Tolerance100kΩ up to 100MΩ
  • ±2.0%
  • ±5.0%
  • ±10.0%
100MΩ up to 1GΩ
  • ±2.0%
  • ±5.0%
  • ±10.0%
  • ±20.0%
1GΩ up to 10GΩ
  • ±5.0%
  • ±10.0%
  • ±20.0%
10GΩ up to 100GΩ
  • ±10.0%
  • ±20.0%
  • ±30.0%
100GΩ up to 1TΩ
  • ±20.0%
  • ±30.0%

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:

 

 

DOCUMENTATION
PDF DocumentSRT CHM high ohmic meander structured SMD chip resistor datasheet
PDF DocumentSRT CHx-HT, CRB-HT and CBW-HT high temperature SMD chip resistor additional datasheet

 

 

 

This product is available compliant to the RoHS EU directive 2011/65/EU, however, the following exemptions according to the RoHS annex are applicable:

  • No. 7(a) - 'Lead in high melting temperature type solders (i.e. lead-based alloys containing 85% by weight or more lead)' used in leaded resistors
  • No. 7(c)-I - 'Electrical and electronic components containing lead in glass or ceramic...or in a glass or ceramic matrix compound' used in chip resistors and leaded thick film resistors
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