Datasheets
RUEF400 by:
Littelfuse Inc
Littelfuse Inc
TE Connectivity
Not Found

PTC Resettable Fuse, 0.05ohm, Through Hole Mount, RADIAL LEADED, ROHS COMPLIANT

Part Details for RUEF400 by Littelfuse Inc

Results Overview of RUEF400 by Littelfuse Inc

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Applications Consumer Electronics

RUEF400 Information

RUEF400 by Littelfuse Inc is a Non-linear Resistor.
Non-linear Resistors are under the broader part category of Resistors.

Resistors are passive components that work by limiting electron flow in a circuit. They are available as fixed or as variable (potentionmeters). Read more about Resistors on our Resistors part category page.

Price & Stock for RUEF400

Part # Distributor Description Stock Price Buy
DISTI # 04H7999
Newark Pptc Resettable Fuse, Rectangular, 30Vdc, Product Range:Polyswitch Ruef Series, Voltage Rating:30V... dc, Holding Current:4A, Trip Current:8A, Time To Trip:12.7S, Fuse Shape:Rectangular, Current Rating Max:100A, Lead Spacing:5.8Mm Rohs Compliant: Yes |Littelfuse RUEF400 more RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 1 Container: Bulk 0
  • 1 $0.5980
  • 10 $0.5620
  • 25 $0.5170
  • 50 $0.4720
  • 100 $0.3920
  • 500 $0.3030
  • 1,000 $0.2680
$0.2680 / $0.5980 Buy Now
DISTI # RUEF400HF-ND
DigiKey PTC RESET FUSE 30V 4A RADIAL Min Qty: 1 Lead time: 15 Weeks Container: Bag 2816
In Stock
  • 1 $0.6700
  • 5 $0.5560
  • 10 $0.5130
  • 50 $0.4256
  • 100 $0.3928
  • 250 $0.3531
  • 500 $0.3257
  • 1,000 $0.3003
  • 5,000 $0.2500
$0.2500 / $0.6700 Buy Now
DISTI # 650-RUEF400
Mouser Electronics Resettable Fuses - PPTC 4A 30V 100A Imax RoHS: Compliant 0
  • 1 $0.5600
  • 10 $0.5130
  • 25 $0.3880
  • 100 $0.3260
  • 250 $0.3080
  • 500 $0.2860
$0.2860 / $0.5600 Order Now
Future Electronics RUEF Series 30 V 4 A Ihold Through Hole Radial PolySwitch Resettable Fuse RoHS: Compliant pbFree: Yes Min Qty: 1 Package Multiple: 1 Lead time: 12 Weeks Container: Bag 36587
Bag
  • 1 $0.2550
  • 150 $0.2450
  • 500 $0.2400
  • 2,000 $0.2350
  • 7,500 $0.2250
$0.2250 / $0.2550 Buy Now
Future Electronics RUEF Series 30 V 4 A Ihold Through Hole Radial PolySwitch Resettable Fuse RoHS: Compliant pbFree: Yes Min Qty: 1 Package Multiple: 1 Lead time: 12 Weeks Container: Bag 1000
Bag
  • 1 $0.1870
  • 200 $0.1820
  • 750 $0.1780
  • 2,500 $0.1740
  • 10,000 $0.1670
$0.1670 / $0.1870 Buy Now
Future Electronics RUEF Series 30 V 4 A Ihold Through Hole Radial PolySwitch Resettable Fuse RoHS: Compliant pbFree: Yes Min Qty: 500 Package Multiple: 500 Lead time: 12 Weeks Container: Bag 0
Bag
  • 1 $0.2550
  • 150 $0.2450
  • 500 $0.2400
  • 2,000 $0.2350
  • 7,500 $0.2250
$0.2250 / $0.2550 Buy Now
Future Electronics RUEF Series 30 V 4 A Ihold Through Hole Radial PolySwitch Resettable Fuse RoHS: Compliant pbFree: Yes Min Qty: 500 Package Multiple: 500 Lead time: 12 Weeks Container: Bag 0
Bag
  • 1 $0.2550
  • 150 $0.2450
  • 500 $0.2400
  • 2,000 $0.2350
  • 7,500 $0.2250
$0.2250 / $0.2550 Buy Now
Onlinecomponents.com   RoHS: Compliant 2000 Partner Stock
  • 0 $0
$0 Buy Now
Bristol Electronics   Min Qty: 7 4016
  • 7 $0.7500
  • 28 $0.4875
  • 104 $0.2812
  • 357 $0.2400
  • 772 $0.2100
  • 1,835 $0.1950
$0.1950 / $0.7500 Buy Now
Quest Components RESISTOR, TEMPERATURE DEPENDENT, PTC, 0.05 OHM, THROUGH HOLE MOUNT 3212
  • 1 $1.0000
  • 668 $0.2600
  • 3,078 $0.2500
$0.2500 / $1.0000 Buy Now
Quest Components RESISTOR, TEMPERATURE DEPENDENT, PTC, 0.05 OHM, THROUGH HOLE MOUNT 941
  • 1 $0.5100
  • 177 $0.2380
  • 841 $0.2125
$0.2125 / $0.5100 Buy Now
DISTI # RUEF400
TME Fuse: PTC polymer, 4A, 14x20.1mm, 5mm Min Qty: 1 1031
  • 1 $0.5000
  • 50 $0.3340
  • 100 $0.3100
  • 200 $0.2870
  • 500 $0.2600
  • 1,000 $0.2410
$0.2410 / $0.5000 Buy Now
LCSC 30V 4A 100A 8A Plugin Resettable Fuses ROHS 1060
  • 5 $0.3605
  • 50 $0.3059
  • 150 $0.2785
  • 500 $0.2581
  • 2,000 $0.2417
  • 5,000 $0.2335
$0.2335 / $0.3605 Buy Now
New Advantage Corporation RUEF Series 30 V 4 A Ihold Through Hole Radial PolySwitch Resettable Fuse RoHS: Compliant Min Qty: 1 Package Multiple: 500 30500
  • 500 $0.3643
  • 30,500 $0.3400
$0.3400 / $0.3643 Buy Now

Part Details for RUEF400

RUEF400 CAD Models

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RUEF400 Part Data Attributes

RUEF400 Littelfuse Inc
Buy Now Datasheet
Compare Parts:
RUEF400 Littelfuse Inc PTC Resettable Fuse, 0.05ohm, Through Hole Mount, RADIAL LEADED, ROHS COMPLIANT
Select a part to compare:
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer LITTELFUSE INC
Package Description RADIAL LEADED, ROHS COMPLIANT
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8533.40.80.70
Samacsys Manufacturer LITTELFUSE
Additional Feature Rmin@25 Deg Cel
Circuit RMS Voltage-Max 30 V
JESD-609 Code e3
Mounting Feature THROUGH HOLE MOUNT
Number of Terminals 2
Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C
Package Height 19.3 mm
Package Length 14 mm
Package Shape RECTANGULAR PACKAGE
Package Style Radial
Package Width 3 mm
Packing Method BULK
Reference Standard CQC; CSA; TUV; UL
Resistance 0.01 Ω
Resistor Type PTC RESETTABLE FUSE
Surface Mount NO
Terminal Finish MATTE TIN
Terminal Placement RADIAL
Terminal Shape WIRE
Thermistor Application OVERCURRENT PROTECTION
Working Voltage 30 V

Alternate Parts for RUEF400

This table gives cross-reference parts and alternative options found for RUEF400. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of RUEF400, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
RF2753-000 Littelfuse Inc $0.4896 PTC Resettable Fuse RUEF400 vs RF2753-000
RF2726-000 Littelfuse Inc $0.4525 PTC Resettable Fuse RUEF400 vs RF2726-000
RUEF400K-2 Littelfuse Inc Check for Price PTC Resettable Fuse, 0.05ohm, Through Hole Mount, RADIAL LEADED, ROHS COMPLIANT RUEF400 vs RUEF400K-2
RUEF400-1 Littelfuse Inc Check for Price PTC Resettable Fuse, 0.05ohm, Through Hole Mount, RADIAL LEADED, ROHS COMPLIANT RUEF400 vs RUEF400-1
RUEF400 TE Connectivity $0.3024 PTC Resettable Fuse, 0.05ohm, Through Hole Mount, RADIAL LEADED, ROHS COMPLIANT RUEF400 vs RUEF400
RUE400 TE Connectivity Check for Price RESISTOR, TEMPERATURE DEPENDENT, PTC, THROUGH HOLE MOUNT, RADIAL LEADED RUEF400 vs RUE400
RF2731-000 Littelfuse Inc $0.4525 PTC Resettable Fuse, 0.05ohm, Through Hole Mount, RADIAL LEADED, ROHS COMPLIANT RUEF400 vs RF2731-000
Part Number Manufacturer Composite Price Description Compare
RUE400-AP TE Connectivity Check for Price RESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, THROUGH HOLE MOUNT, RADIAL LEADED RUEF400 vs RUE400-AP
RUE400K-1 TE Connectivity Check for Price RESISTOR, TEMPERATURE DEPENDENT, PTC, THROUGH HOLE MOUNT, RADIAL LEADED RUEF400 vs RUE400K-1
RUE400-1 TE Connectivity Check for Price RESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, THROUGH HOLE MOUNT, RADIAL LEADED RUEF400 vs RUE400-1
RXE300-2 TE Connectivity Check for Price RESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, THROUGH HOLE MOUNT, RADIAL LEADED RUEF400 vs RXE300-2
RUE400K-AP TE Connectivity Check for Price RESISTOR, TEMPERATURE DEPENDENT, PTC, THROUGH HOLE MOUNT, RADIAL LEADED RUEF400 vs RUE400K-AP

RUEF400 Related Parts

RUEF400 Frequently Asked Questions (FAQ)

  • A recommended PCB layout for optimal thermal performance of the RUEF400 includes a large copper pad underneath the device, multiple vias to dissipate heat, and a thermal relief pattern to minimize thermal resistance.

  • To ensure proper soldering, use a soldering iron with a temperature of 250°C to 260°C, and apply a small amount of solder paste to the PCB pads. Use a soldering technique that minimizes the time the iron is in contact with the component.

  • The RUEF400 has a maximum surge current rating of 400A for 8.3ms, as per the IEC 61000-4-5 standard.

  • Yes, the RUEF400 can be used in parallel to increase the current rating, but it is essential to ensure that the devices are properly matched and that the PCB layout is designed to minimize current imbalance between the devices.

  • Littelfuse recommends using the FH008-400 fuse holder or a similar clip that provides secure retention and minimizes thermal resistance.