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 | Hold current (Ihold) | Required for initial family selection | Circuit requirement |
| 2 | Trip current (Itrip) | Required for initial family selection | Circuit requirement |
| 3 | Maximum operating voltage | Confirm before sampling | Application / qualification requirement |
| 4 | Maximum fault current | Confirm before sampling | Application / qualification requirement |
| 5 | Ambient-temperature derating | Confirm before sampling | Application / qualification requirement |
| 6 | Package and PCB footprint | 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
0805, 1206, 1812, 2920 and TR plug-in series
Typical applications
USB and I/O ports, battery-powered equipment, industrial controls, telecom devices and consumer electronics.
Selection parameters
- Hold current (Ihold)
- Trip current (Itrip)
- Maximum operating voltage
- Maximum fault current
- Ambient-temperature derating
- Package and PCB footprint
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 PPTC Resettable Fuses?
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