1K PTC Thermistor (Positive Temperature Coefficient)
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Prices updated: 12 Oct 2026
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About this product
This 1 kΩ PTC thermistor has a positive temperature coefficient, meaning its resistance rises as its temperature increases. It is a low-cost option for temperature sensing and for protecting AC lines, where its resistance climbs sharply when it heats up. Refer to the datasheet for the resistance-temperature curve and rated voltage.
Specifications
- Type
- PTC (positive temperature coefficient)
- Resistance
- 1 kΩ
- Applications
- Temperature sensing, AC line protection
Frequently asked questions
What is the difference between a PTC and an NTC thermistor?
A PTC thermistor's resistance increases with temperature, while an NTC thermistor's resistance decreases as temperature rises. Choose the type based on whether you need resistance to rise or fall with heat.
Can I use it for mains protection?
It is listed for AC line protection, but you must confirm the voltage and current ratings in the datasheet before using it in any mains circuit. Follow local electrical safety practice for mains work.
