Name: RUEF250U
Brand: Littelfuse Inc.
SKU: RUEF250U
Availability: InStock
Rating: 5 (109 reviews)

RUEF250U

For Reference Only

Part Number	RUEF250U
Manufacturer	Littelfuse Inc.
Description	POLYSWITCH PTC RESET 2.5A HOLD
Datasheet	RUEF250U Datasheet RUEF250U Specifications
Package	Radial, Disc
ECAD
In Stock	81,504 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	May 15 - May 20 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # RUEF250U (PTC Resettable Fuses) is manufactured by Littelfuse Inc. and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

For RUEF250U specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add RUEF250U with quantity into BOM. Heisener.com does NOT require any registration to request a quote of RUEF250U.

RUEF250U Specifications

Manufacturer	Littelfuse Inc.
Category	Circuit Protection - PTC Resettable Fuses
Package	Radial, Disc
ECAD
Series	PolySwitch?, RUEF
Type	Polymeric
Voltage - Max	30V
Current - Max	100A
Current - Hold (Ih) (Max)	2.5A
Current - Trip (It)	5A
Time to Trip	10.3s
Resistance - Initial (Ri) (Min)	20 mOhms
Resistance - Post Trip (R1) (Max)	70 mOhms
Resistance - 25°C (Typ)	-
Operating Temperature	-40°C ~ 85°C
Ratings	-
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.449" L x 0.118" W (11.40mm x 3.00mm)
Height - Seated (Max)	0.720" (18.30mm)
Thickness (Max)	-
Lead Spacing	0.199" (5.05mm)

RUEF250U Datasheet

RUEF250U Reviews

Sier*****illai

March 28, 2023

★ ★ ★ ★ ★

It arrived on time. I was able to finish a repair before Sunday service and with no over time. Easy to work with.

Eloi*****ells

March 13, 2023

★ ★ ★ ★ ★

These little guys worked perfect for my wiring project. Reliable, good quality.

Kayl*****leming

March 6, 2023

★ ★ ★ ★ ★

Excellent ! RUEF250U item arrived very quickly and was packaged well, no issues.

Jayc*****Little

March 2, 2023

★ ★ ★ ★ ★

EXACTLY what I was looking for -- one piece with a low forward voltage drop to isolate some DC power sources. They work fantastic!

Canno*****lkner

February 20, 2023

★ ★ ★ ★ ★

I enjoy doing business with Heisener, please keep up the GREAT Service!

Write a Review

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RUEF250U Packaging

RUEF250U FAQ

1. How to order RUEF250U on Heisener?

Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does Heisener guarantee that RUEF250U is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the RUEF250U. All suppliers must pass our qualification reviews before they can publish their products including RUEF250U on Heisener; we pay more attention to the channels and quality of RUEF250U products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the RUEF250U price and inventory displayed accurate?

The price and inventory of RUEF250U fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.
5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of RUEF250U?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the RUEF250U we delivered, we will accept the replacement or return of the RUEF250U only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of RUEF250U.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as RUEF250U pin diagram, RUEF250U datasheet?

If you need any after-sales service, please do not hesitate to contact us.

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V24B12E250BF2	Vicor Corporation, CONVERTER MOD DC/DC 12V 250W, 9-DIP Module, PolySwitch?, RUEF	View
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RUEF250U Guarantees

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantees

We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

Global Supply Chains - Reliable and Authorized Distributor Resources

Part Number

Manufacturer

Description

Stock

RUEF250U-2

D# V72:2272_16240118

Littelfuse Inc

PTC Resettable Fuse 2.5A(hold) 5A(trip) 30VAC/30VDC 100A 1.2W 10.3s 0.02Ohm Radial 11.4 X 3 X 18.3mm T/R

RoHS: Compliant

RUEF250U

D# V36:1790_14536855

TE Connectivity

PTC Resettable Fuse 2.5A(hold) 5A(trip) 30VAC/30VDC 100A 1.2W 10.3s 0.02Ohm Radial 11.4 X 3 X 18.3mm Bag

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

RUEF250U-2

D# RUEF250U-2

TE Connectivity

PTC Resettable Fuse 100A 5s 30V 0.031 Ohm 2-Pin Radial - Tape and Reel (Alt: RUEF250U-2)

RUEF250U

D# RUEF250U

TE Connectivity

PTC Resettable Fuse 100A 30V Bulk - Bag (Alt: RUEF250U)

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

RUEF250U

TE Connectivity

139

Part Number	Manufacturer	Description	Stock
RUEF250U-0.148	TE Connectivity	RESET,30V,40A,2.5A,5A ITRP,RADIAL,BULK,UNCOATED,HAZMAT - Bulk	0
RUEF250U-2	TE Connectivity	RESETTABLE FUSE, PTC, 30V, 2.5A, RADIAL, Holding Current:2.5A, Tripping Current:5A, Initial Resistance Max:0.04ohm, Operating Voltage:30VDC, PTC Fuse Case Style:Radial Leaded, Initial Resistance Min:0.02ohm, Packaging:Cut Tape , RoHS Compliant: Yes	376
RUEF250U	TE Connectivity	Min Qty 500	7500

Part Number	Manufacturer	Description	Stock
RUEF250U-2 D# RUEF250U-2TR-ND	Littelfuse Inc	PTC RESET FUSE 30V 2.5A RADIAL	0
RUEF250U D# RUEF250U-ND	Littelfuse Inc	PTC RESET FUSE 30V 2.5A RADIAL	29
RUEF250U-0.148 D# 18-RUEF250U-0.148-ND	Littelfuse Inc	PTC RESET FUSE	0

Part Number

Manufacturer

Description

Stock

RUEF250U-2

D# 2078268

Littelfuse Inc

RESETTABLE FUSE, PTC, 30V, 2.5A, RADIAL

RoHS: Compliant

Min Qty: 3000

Container: Cut Tape

RUEF250U

D# 2078283

Littelfuse Inc

FUSE, PTC RESET, 30V, 2.5A, RADIAL

RoHS: Compliant

Min Qty: 500

Container: Each

Part Number	Manufacturer	Description	Stock
RUEF250U-2	Littelfuse Inc	RoHS: Compliant pbFree: Yes	11
RUEF250U	Littelfuse Inc	RUEF Series 30 V 2.5 A Ihold Through Hole Radial PolySwitch Resettable Fuse RoHS: Compliant pbFree: Yes	0
RUEF250U-0.148	Littelfuse Inc	RUEF Series 30 V 2.5 A Radial POLYFUSE® Resettable PTC RoHS: Compliant pbFree: Yes	0

Part Number

Manufacturer

Description

Stock

RUEF250U-0.148

D# 650-RUEF250U-0.148

Littelfuse Inc

Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX

RoHS: Not Compliant

275

Part Number

Manufacturer

Description

Stock

RUEF250U-2

D# NS-RUEF250U-2

TE Connectivity

OEM/CM ONLY

30304

RUEF250U

D# NS-RUEF250U

TE Connectivity

OEM/CM ONLY

2795

Part Number

Manufacturer

Description

Stock

RUEF250U

Littelfuse Inc

PTC RESETTABLE FUSE, THROUGH HOLE MOUNT

Part Number

Manufacturer

Description

Stock

RUEF250U

D# RUEF250U

TE Connectivity / Raychem

Fuse

520

Part Number	Manufacturer	Description	Stock
RUEF250U E17350000	LTF	OEM/CM ONLY	1376
RUEF250U2	TE Connectivity	OEM/CM ONLY	13640
RUEF250U	TE Connectivity	OEM/CM ONLY	11016

Part Number	Manufacturer	Description	Stock
RUEF250U-2	Littelfuse Inc	Resettable Fuses - PPTC 2.5A 30V 40A Imax Uncoated pbFree: Pb-Free	0
RUEF250U	Littelfuse Inc	Resettable Fuses - PPTC 2.5A 30V 100A Imax UNCOATED pbFree: Pb-Free	0
RF0057-000	Littelfuse Inc	Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX (R) pbFree: Pb-Free	0
E17350-000	Littelfuse Inc	Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX pbFree: Pb-Free	0

Part Number

Manufacturer

Description

Stock

RUEF250U-2

D# 16508241

TE Connectivity

PTC Resettable Fuse 2.5A(hold) 5A(trip) 30VAC/30VDC 100A 1.2W 10.3s 0.02Ohm Radial 11.4 X 3 X 18.3mm T/R

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

RUEF250U-2

D# 2078268

Littelfuse Inc

RESETTABLE FUSE, PTC, 30V, 2.5A, RADIAL

RoHS: Compliant

Min Qty: 3000

Container: Cut Tape

RUEF250U

D# 2078283

Littelfuse Inc

FUSE, PTC RESET, 30V, 2.5A, RADIAL

RoHS: Compliant

Min Qty: 1

Container: Each

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RUEF250U

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