Name: RUEF400K
Brand: Littelfuse Inc.
SKU: RUEF400K
Availability: InStock
Rating: 5 (103 reviews)

RUEF400K

For Reference Only

Part Number	RUEF400K
Manufacturer	Littelfuse Inc.
Description	POLYSWITCH PTC RESET 4A HOLD
Datasheet	RUEF400K Datasheet RUEF400K Specifications
Package	Radial, Disc
ECAD
In Stock	17,940 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	Apr 22 - Apr 27 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # RUEF400K (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 RUEF400K specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add RUEF400K with quantity into BOM. Heisener.com does NOT require any registration to request a quote of RUEF400K.

RUEF400K 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)	4A
Current - Trip (It)	8A
Time to Trip	12.7s
Resistance - Initial (Ri) (Min)	10 mOhms
Resistance - Post Trip (R1) (Max)	50 mOhms
Resistance - 25°C (Typ)	-
Operating Temperature	-40°C ~ 85°C
Ratings	-
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.551" L x 0.118" W (14.00mm x 3.00mm)
Height - Seated (Max)	0.839" (21.30mm)
Thickness (Max)	-
Lead Spacing	0.199" (5.05mm)

RUEF400K Datasheet

RUEF400K Reviews

Gise*****Kari

March 13, 2023

★ ★ ★ ★ ★

Very fast reply, professional seller and received the correct parts.

Kai***** Leon

February 21, 2023

★ ★ ★ ★ ★

On time and as described, fast delivery. Would definitely buy again. Thx.

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RUEF400K Packaging

RUEF400K FAQ

1. How to order RUEF400K 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 RUEF400K is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the RUEF400K. All suppliers must pass our qualification reviews before they can publish their products including RUEF400K on Heisener; we pay more attention to the channels and quality of RUEF400K products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the RUEF400K price and inventory displayed accurate?

The price and inventory of RUEF400K 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 RUEF400K?

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 RUEF400K we delivered, we will accept the replacement or return of the RUEF400K 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 RUEF400K.

(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 RUEF400K pin diagram, RUEF400K datasheet?

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

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RUEF400K 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

RUEF400K-2

D# V72:2272_16255971

Littelfuse Inc

PTC Resettable Fuse 4A(hold) 8A(trip) 30VAC/30VDC 100A 2.5W 12.7s 0.01Ohm Radial 14 X 3 X 19mm T/R

RoHS: Compliant

RUEF400K

D# V36:1790_11453577

Littelfuse Inc

PTC Resettable Fuse 4A(hold) 8A(trip) 30VAC/30VDC 100A 2.5W 12.7s 0.01Ohm Radial 14 X 3 X 19.3mm Bag

RoHS: Compliant

Part Number	Manufacturer	Description	Stock
RUEF400K-2	TE Connectivity	FUSE 40A 30V FAST ACTING 2PIN - Tape and Reel	0
RUEF400K-AP	TE Connectivity	RUEF400K-AP - Ammo Pack	0
RUEF400K-0.138	TE Connectivity	POLYSWITCH PTC RESET 4A KINKED	0
RUEF400K	TE Connectivity	FUSE, PTC RESET, 30V, 4A, RADIAL, Holding Current:4A, Tripping Current:8A, Initial Resistance Max:0.03ohm, Operating Voltage:30VDC, PTC Fuse Case Style:Radial Leaded, Initial Resistance Min:0.01ohm, Lead Spacing:5.8mm, Length:19.3mm , RoHS Compliant: Yes	0

Part Number

Manufacturer

Description

Stock

RUEF400K

D# C1S425201096386

Littelfuse Inc

PTC Resettable Fuse 4A(hold) 8A(trip) 30VDC 100A 2.5W 12.7s 0.01Ohm Radial 14 X 3 X 19.3mm Bag

RoHS: Not Compliant

pbFree: No

Min Qty: 5

Container: Bulk

997

Part Number

Manufacturer

Description

Stock

RUEF400K

Littelfuse Inc

RoHS (ship within 1day) - D/C 2018

455

Part Number	Manufacturer	Description	Stock
RUEF400K-AP D# RUEF400K-APCT-ND	Littelfuse Inc	PTC RESET FUSE 30V 4A RADIAL	339
RUEF400K D# RUEF400KHF-ND	Littelfuse Inc	PTC RESET FUSE 30V 4A RADIAL	5046
RUEF400K-0.138 D# RUEF400K-0.138-ND	Littelfuse Inc	PTC RESET FUSE 30V 4A RADIAL	0
RUEF400K-2 D# RUEF400K-2HFCT-ND	Littelfuse Inc	PTC RESET FUSE 30V 4A RADIAL	227

Part Number

Manufacturer

Description

Stock

RUEF400K

D# 2786687

Littelfuse Inc

FUSE, RESETTABLE PTC, 30VDC, 4A, THD

RoHS: Compliant

Min Qty: 1

Container: Each

Part Number

Manufacturer

Description

Stock

RUEF400K-2

Littelfuse Inc

RoHS: Compliant

pbFree: Yes

RUEF400K

Littelfuse Inc

RoHS: Compliant

pbFree: Yes

Part Number

Manufacturer

Description

Stock

RUEF400KAP

TE Connectivity

OEM/CM ONLY

6209

Part Number

Manufacturer

Description

Stock

RUEF400K-2

D# 650-RUEF400K-2

Littelfuse Inc

Resettable Fuses - PPTC 4A 30V 100A Imax

RoHS: Compliant

314

Part Number

Manufacturer

Description

Stock

RUEF400K

D# 40K8520

Littelfuse Inc

FUSE, PTC RESET, 30V, 4A, RADIAL, Product Range:PolySwitch RUEF Series, Voltage Rating:30VDC, Holding Current:4A, Tripping Current:8A, Lead Spacing:5.8mm, Length:19.3mm, Operating Temperature Min:-40°C, Operating Temperature Max:85°CRoHS Compliant: Yes

RoHS: Compliant

Min Qty: 10000

Container: Bulk

Part Number	Manufacturer	Description	Stock
RUEF400K-0.138 D# NS-RUEF400K-0.138	TE Connectivity	OEM/CM ONLY	7172
RUEF400K D# NS-RUEF400K	TE Connectivity	OEM/CM ONLY	2297
RUEF400K-2 D# NS-RUEF400K-2	TE Connectivity	OEM/CM ONLY	8898

Part Number

Manufacturer

Description

Stock

RUEF400K

Littelfuse Inc

364

Part Number	Manufacturer	Description	Stock
RUEF400K	TE Connectivity	OEM/CM ONLY	471
RUEF400KAP	Tyco Electronics Raychem Circuit Protection	OEM/CM ONLY	8016
RUEF400K2	TE Connectivity	OEM/CM ONLY	15011

Part Number	Manufacturer	Description	Stock
RUEF400K-0.118	Littelfuse Inc	30V 4A-HD 40A MAX pbFree: Pb-Free	0
RF2726-000	Littelfuse Inc	Resettable Fuses - PPTC 30V 4A-HD 40A MAX pbFree: Pb-Free	0
RF2725-000	Littelfuse Inc	Resettable Fuses - PPTC 30V 4A-HD 40A MAX pbFree: Pb-Free	0
RUEF400K	Littelfuse Inc	Resettable Fuses - PPTC 4A 30V 40A Imax pbFree: Pb-Free	0
RUEF400K-2	Littelfuse Inc	Resettable Fuses - PPTC 4A 30V 100A Imax pbFree: Pb-Free	0

Part Number

Manufacturer

Description

Stock

RUEF400K

D# 31310723

Littelfuse Inc

PTC Resettable Fuse 4A(hold) 8A(trip) 30VAC/30VDC 100A 2.5W 12.7s 0.01Ohm Radial 14 X 3 X 19.3mm Bag

RoHS: Compliant

RUEF400K-2

D# 36306320

Littelfuse Inc

PTC Resettable Fuse 4A(hold) 8A(trip) 30VAC/30VDC 100A 2.5W 12.7s 0.01Ohm Radial 14 X 3 X 19mm T/R

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

RUEF400K

D# 2786687

Littelfuse Inc

FUSE, RESETTABLE PTC, 30VDC, 4A, THD

RoHS: Compliant

Min Qty: 1

Container: Each

Quick Inquiry

RUEF400K

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