SRT CHM 4020-HT Series

Product Features

High temperature, non-magnetic thick film chip resistor
Resistance range from 100kΩ to 10TΩ
Tolerances from ±1% to ±30%
TCR from ±25 ppm/°C to ±2000 ppm/°C
Power rating of 2W (at +70°C)
Temperature range from -55°C up to +300°C

Applications

The CHM 4020-HT high temperature, high ohmic non-magnetic resistor series from SRT Resistor Technology offers the same features as the CHM 4020 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 10TΩ, power rating of 2W and voltage rating of 4000V trimmed or 6000V untrimmed (tolerances ≥5%), all in a small 4020 surface mount package. By utilising SRT’s meander structured thick film resistor technology, these chip resistors are able to offer tolerances down to ±1% (between 100kΩ and 10GΩ) as well as a TCR of ±25 ppm/°C (between 100kΩ and 10GΩ) and a VCR as low as ±5 ppm/V (between 100kΩ and 100MΩ). The CHM 0402-HT resistor series contains no organics making them suitable for high vacuum applications and offer PtAg (platinum silver) terminations for conductive gluing and soldering.

High temperature meander structured surface-mount thick film chip resistor
Available in any resistance between 100kΩ and 10TΩ
4020 package
Power rating of 2W at +70°C
Voltage rating of 4000V trimmed or 6000V untrimmed (tolerances ≥5%)
Tolerances as low as ±1% over the resistance range of 100kΩ up to 10GΩ
TCR as low as ±25 ppm/°C over the resistance range of 100kΩ to 10GΩ
VCR as low as ±5 ppm/V over the resistance range of 100kΩ up to 100MΩ
Temperature range 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:

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.

Please note, the tolerance for the CHM 4020-HT series starts from ±1%, whereas the below table gives full specifications of the standard CHM series:

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

SRT CHM 4020-HT Series

Resistance Value
Temperature Coefficient
Tolerance
Clear

Custom resistance value (Ω) *
Custom AT Range (AT) *
Custom Capacity (lbs) *
Custom Pressure (Bar/PSI) *
Custom Resistance Value Element 1 (Ω) *
Custom Resistance Value Element 2 (Ω) *
Custom lead length (mm) *
Custom lead length (inches) *

Quantity

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Calculators and Convertors

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Specifications

Weight	0.00000 kg
Dimensions	0.60 x 5.10 x 10.20mm
Maximum Resistance	10TΩ
Minimum Resistance	100kΩ
Package / Size	Surface-mount, 4020
Power Rating	2W
Product Type	High Temperature, Thick Film, Non-Magnetic, Resistor
Resistance Value	Custom (100kΩ – 100MΩ), Custom (100MΩ – 1GΩ), Custom (1GΩ – 10GΩ), Custom (10GΩ – 100GΩ), Custom (100GΩ – 1TΩ), Custom (1TΩ – 3TΩ), Custom (3TΩ – 10TΩ)
Series / Model	CHM
Temperature Coefficient	±50 ppm/°C, ±100 ppm/°C, ±250 ppm/°C, ±500 ppm/°C, ±1000 ppm/°C, ±2000 ppm/°C
Temperature Range (°C)	-55 to +300°C
Termination / Connection	PtAg
Tolerance	±1%, ±2%, ±5%, ±10%, ±20%, ±30%

RoHS Compliant Product – SRT with Exemption

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

SRT CHM-HT 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:

DOCUMENTATION
	SRT high temperature CHx-HT, CRB-HT and CBW-HT series SMD chip resistor datasheet
	SRT standard CHM high ohmic meander structured SMD chip resistor datasheet