Honeywell 20k NTC Thermistor: Model and Datasheet Guide
Article Summary
- What this guide covers
- How NTC thermistors work
- What “20k” tells you
- How to read model-specific data
- OEM selection checklist
What this guide covers
This guide explains how to evaluate a Honeywell 20k NTC thermistor reference during a design review. The exact part number and its current manufacturer datasheet are essential: a nominal resistance label alone does not identify a complete sensor specification.
How NTC thermistors work
An NTC (negative temperature coefficient) thermistor has lower resistance as temperature rises. Its resistance-temperature relationship is nonlinear and varies by model. For measurement and control designs, engineers should use the curve and coefficients published for the exact part rather than assume that two thermistors with the same nominal resistance are interchangeable.
What “20k” tells you
“20k” generally describes a nominal resistance associated with a stated reference temperature. It does not, by itself, specify accuracy, tolerance, operating temperature range, response time, packaging, or the full resistance-temperature curve. Confirm those details against the exact part number and official datasheet before making a design or purchasing decision.
How to read model-specific data
Use the resistance-temperature table or curve supplied for the exact model. Check the reference temperature, resistance values, tolerance, applicable temperature range, and any listed coefficients. If the required temperature falls between published points, follow the manufacturer’s recommended calculation method and validate the result in the actual measurement circuit.
This page is a selection and datasheet-reading guide; it does not publish an official Honeywell resistance table. Always obtain current model-specific data from the manufacturer before finalizing a design.
OEM selection checklist
- Confirm the complete part number and nominal resistance reference.
- Match the resistance-temperature curve and tolerance to the measurement circuit.
- Check the required temperature range, probe or bead construction, lead length, and environmental exposure.
- Validate the sensor with the intended controller, wiring, and assembly process.
For design teams comparing thermistor options, browse our NTC thermistor products. For a custom probe or OEM assembly, send the part number, target range, drawing, and annual volume with your quote request so the engineering team can review the application.
In summary, use the exact model datasheet to evaluate a Honeywell 20k NTC thermistor, then confirm fit and performance in the end product. Reference resistance is only one part of the selection process.
