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 | Continuous operating voltage | Required for initial family selection | Circuit requirement |
| 2 | Varistor voltage | Required for initial family selection | Circuit requirement |
| 3 | Maximum clamping voltage | Confirm before sampling | Application / qualification requirement |
| 4 | Peak surge current | Confirm before sampling | Application / qualification requirement |
| 5 | Energy rating | Confirm before sampling | Application / qualification requirement |
| 6 | Surge waveform and repetition | 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
MOV and three-phase varistor families
Typical applications
Power products, industrial control, appliances, lighting, communication equipment and automotive electronics.
Selection parameters
- Continuous operating voltage
- Varistor voltage
- Maximum clamping voltage
- Peak surge current
- Energy rating
- Surge waveform and repetition
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 Varistors & Surge Protection?
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