Engineering selection workflow
01
Define
Normal operation and protection target.
02
Derate
Check temperature and worst-case conditions.
03
Verify
Review package, approvals and test limits.
04
Sample
Validate performance in the actual circuit.
Selection worksheet
Use this checklist when requesting a recommendation or cross-reference.
| # | Parameter | Review stage | Source |
|---|---|---|---|
| 1 | Nominal resistance | Required for initial family selection | Circuit requirement |
| 2 | B value or switching characteristic | Required for initial family selection | Circuit requirement |
| 3 | Tolerance | Confirm before sampling | Application / qualification requirement |
| 4 | Operating temperature | Confirm before sampling | Application / qualification requirement |
| 5 | Dissipation factor | Confirm before sampling | Application / qualification requirement |
| 6 | Package and response time | Confirm before sampling | Application / qualification requirement |
Technical resource requests
Cross Reference
Comparison against an incumbent part number using critical parameters.Quality Documents
Currently available approval or quality documents for project review.Available product families
Temperature-sensing and inrush-current-control families
Typical applications
Power supplies, battery systems, appliances, medical equipment, industrial controls and consumer devices.
Selection parameters
- Nominal resistance
- B value or switching characteristic
- Tolerance
- Operating temperature
- Dissipation factor
- Package and response time
How to request a recommendation
Send the normal operating condition, worst-case fault condition, ambient temperature, mechanical limits, required approvals and estimated annual quantity. Final suitability must be verified in the actual circuit.
What parameters are required to select NTC / PTC Thermistors?
Provide the values listed above together with the target application and incumbent part number, if available. We can then identify the relevant EKT family and confirm which controlled datasheet or quality documents are available.
Discuss your application with EKT
Ask for a datasheet, cross-reference review, sample or quotation.
Send Product Requirements