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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.
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Why are electronic fuses attracting attention?
| Electronic fuse Toshiba eFuse IC |
Poly fuse (Poly switch / Resettable fuse) |
Chip fuse | Glass tube fuse | |
|---|---|---|---|---|
| Protection method |
Shut down MOSFET switch | Current limit by resistance increase |
Blown conductive part |
Blown conductive part |
| Protection speed |
150ns (typ.) * | Several 100 ms to several s |
Several s | Several s |
| Repeated use | Possible | Possible | Not possible | Not possible |
* Example of TCKE8xx series. Speeds may vary by product.
Three major benefits of eFuse IC
Benefit 1: eFuse ICs can be used repeatedly due to their semiconductor structure
Benefit 2: Superior protection performance compared to conventional fuses
Benefit 3: Reduced certification work for IEC62368-1, a new safety standard
