GRX Technology Co, Ltd
Littelfuse 0459.375UR PICO® SMF 459 375 mA 125 VAC/VDC Very Fast-Acting (FF) Fuse – UR Tape & Reel 500 pcs
Littelfuse 0459.375UR PICO® SMF 459 375 mA 125 VAC/VDC Very Fast-Acting (FF) Fuse – UR Tape & Reel 500 pcs

Littelfuse 0459.375UR PICO® SMF 459 375 mA 125 VAC/VDC Very Fast-Acting (FF) Fuse – UR Tape & Reel 500 pcs

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pLittelfuse 0459.375UR — 375 mA, 125 V, fast-acting fuse, 50 A @ 125 VAC; 300 A @ 125 VDC interrupting./p
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    Littelfuse PICO® SMF 459 0459.375ER | 375 mA 125 VAC/VDC Fuse | SMD terminals | 2,500 pcs
    LittelfuseFuseFast-Acting Fuse125V FuseSurface Mount Fuse375mA Fuse
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    Littelfuse 0459.375UR PICO® SMF 459 375 mA 125 VAC/VDC Very Fast-Acting (FF) Fuse – UR Tape & Reel 500 pcs

    Littelfuse 0459.375UR PICO® SMF 459 375 mA 125 VAC/VDC Very Fast-Acting (FF) Fuse – UR Tape & Reel 500 pcs belongs to the Littelfuse range. It carries 375 mA, rated 125 VAC/VDC, uses a fast-acting element.

    Technical Data

    ParameterRating
    ParameterValue
    Manufacturer / SeriesLittelfuse / PICO® SMF 459
    Part number0459.375UR
    Fuse characteristicVery Fast-Acting (FF)
    Rated current375 mA
    Rated voltage125 VAC/VDC
    Interrupting capability50 A @ 125 VAC; 300 A @ 125 VDC
    PackagePICO® SMF surface-mount fuse; Tape & Reel
    Mounting methodSurface Mount (SMD)
    Dimensions8.26 × 4.32 × 3.05 mm
    Lead pitchN/A (SMD)
    Operating temperature-55°C to +125°C
    ApprovalsUL E10480; CSA 29862
    Standards / complianceUL Recognized; CSA (rating-dependent); PSE (1–5A); RoHS
    EnvironmentalRoHS compliant
    Nominal cold resistance0.395 Ω
    Nominal melting I²t0.0254 A²s
    Packaging / order codeUR: Tape & Reel, 500 pcs; SMD terminals
    Product statusVerify current orderability with Littelfuse / authorized distribution

    Design Notes

    • Interrupting capability is 50 A @ 125 VAC; 300 A @ 125 VDC — 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 125 VAC/VDC; a lower-rated part is not a safe substitute.
    • Do not upsize beyond 375 mA to stop nuisance trips — fix the cause instead.

    Where It Is Used

    Typical places this fuse turns up:

    • EV
    • telecom

    Ordering Details

    Order code 0459.375UR from Littelfuse, supplied in PICO® SMF surface-mount fuse; Tape & Reel. Confirm the exact suffix before release.

    Common Questions

    What are the ratings of the 0459.375UR?

    375 mA continuous at 125 VAC/VDC, interrupting rating 50 A @ 125 VAC; 300 A @ 125 VDC.

    Is the 0459.375UR fast-acting or time-delay?

    It is fast-acting. Expect it to open quickly on overload.

    Can the 0459.375UR be used on a higher fault-current circuit?

    No — its interrupting rating is 50 A @ 125 VAC; 300 A @ 125 VDC. Choose a part whose breaking capacity exceeds the prospective fault current.

    Shenzhen Gaorunxin Technology Co., Ltd

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    Shenzhen Gaorunxin Technology Co., Ltd

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