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RUEF400-2 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

RUEF400-2 product

RUEF400-2

PTC Resettable Fuses

PTCResettable FuseLittelfuse

The RUEF400-2 is a 4A, 30V radial PTC resettable fuse from Littelfuse, ideal for robust overcurrent protection.

Best for

  • Overcurrent protection
  • Power supplies
  • Industrial controls

Avoid if

  • Applications exceeding 30V or 100A fault current

Check before use

  • Thermal environment, as PTC performance is temperature-dependent

Key specifications

Hold Current
4.00 A
Max Voltage
30 V
Resistance Range
0.01 - 0.03 Ohm

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Power ManagementIndustrial

Datasheet

media

800 KB

Datasheet AI

CAD Models

Download ECAD models for RUEF400-2: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is a PolySwitch PTC resettable fuse designed to protect circuits from overcurrent conditions.