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- Datasheet Download Datasheet
- Stock & Prices $ Price & Stock for LR4-380XF
- Part Number LR4-380XF
- Manufacturer LITTELFUSE
- Pin Count 999
- Last Modified Date Mar 3, 2026 7:38 AM UTC
- Pinout / Pin List Click Here (Member Only)
LR4-380XF Details
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Manufacturer Part Number:
LR4-380XF
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Pbfree Code:
Yes
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Rohs Code:
Yes
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Part Life Cycle Code:
Active
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Reach Compliance Code:
Compliant
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ECCN Code:
EAR99
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HTS Code:
8533.40.80.70
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Manufacturer:
Littelfuse Inc
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YTEOL:
8
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Additional Feature:
Rmax:0.026 OHMS AT 20 DEG CEL
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Mounting Feature:
SURFACE MOUNT
LR4-380XF Frequently Asked Questions (FAQs)
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A good PCB layout for the LR4-380XF should ensure minimal inductance and resistance in the circuit. Keep the fuse as close as possible to the power source, and use wide traces (at least 2 oz copper) to minimize voltage drops. Avoid routing high-current traces near sensitive components.
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To select the correct fuse rating, consider the maximum current rating of your circuit, the voltage rating, and the fault current available. Also, consider the ambient temperature, as high temperatures can affect the fuse's performance. Consult the datasheet and Littelfuse's selection guide for more information.
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The maximum operating temperature for the LR4-380XF is 125°C. However, the fuse's performance may degrade at high temperatures, and its melting integral (I²t) may be affected. Consult the datasheet for more information on temperature derating.
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Yes, the LR4-380XF is designed to withstand vibrations up to 10g peak acceleration. However, it's essential to ensure proper mounting and secure the fuse to the PCB to prevent damage or dislodging. Consult Littelfuse's application notes for more information on vibration testing.
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Yes, the LR4-380XF is compatible with lead-free soldering processes. The fuse is designed to withstand the higher temperatures associated with lead-free soldering. However, ensure that your soldering process meets the recommended temperature profile to prevent damage to the fuse.
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LR4-380XF Overview
Use the download button to access the LR4-380XF 3D model. You can still request or build the schematic symbol and PCB footprint by using the respective build or request forms on this page.
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