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Eaton 0603FA250-R 250mA 50Vdc Fast-Acting Chip SMD Fuse
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pEaton 0603FA250-R — 250 mA, 50 V, fast-acting SMD fuse, 50 A at rated voltage interrupting./p
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Eaton 0603FA250-R 250mA 50Vdc Fast-Acting Chip SMD Fuse
Eaton 0603FA250-R 250mA 50Vdc Fast-Acting Chip SMD Fuse belongs to the Eaton range. It carries 250 mA, rated 50 Vdc, uses a fast-acting element, in a chip body.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer / Series | Eaton / 0603FA Series |
| Part number | 0603FA250-R |
| Fuse characteristic | fast-acting |
| Current rating | 250 mA |
| Voltage rating | 50 Vdc |
| Interrupting rating | 50 A at rated voltage |
| Typical DC cold resistance | 3.100 Ω |
| Typical melting I²t | 0.0004 A²s |
| Typical voltage drop | 0.921 V |
| Package | 0603 (1608 metric) chip, surface mount |
| Operating temperature | -55 °C to +125 °C (with derating) |
| Agency | UL Recognition JDYX2 / E19180; CSA 053787 C 000, Class 1422 30 |
| Environmental | RoHS compliant and halogen free; AEC-Q200 qualified |
Design Notes
- Interrupting capability is 50 A at rated voltage — confirm the circuit's prospective fault current stays below this.
- Fast element suits resistive and semiconductor loads rather than motors with high inrush.
- Because it opens within milliseconds, downstream semiconductors see less let-through energy.
- Working voltage must stay at or below 50 Vdc; a lower-rated part is not a safe substitute.
- Do not upsize beyond 250 mA to stop nuisance trips — fix the cause instead.
Where It Is Used
Typical places this fuse turns up:
- EV
- automotive
Ordering Details
Order code 0603FA250-R from Eaton, supplied in 0603 (1608 metric) chip, surface mount. Confirm the exact suffix before release.
Common Questions
What are the ratings of the 0603FA250-R?
250 mA continuous at 50 Vdc, interrupting rating 50 A at rated voltage.
Is the 0603FA250-R fast-acting or time-delay?
It is fast-acting. Expect it to open quickly on overload.
Can the 0603FA250-R be used on a higher fault-current circuit?
No — its interrupting rating is 50 A at rated voltage. Choose a part whose breaking capacity exceeds the prospective fault current.
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