Name: RKEF250
Brand: Littelfuse Inc.
SKU: RKEF250
Availability: InStock
Rating: 5 (75 reviews)

RKEF250

For Reference Only

Part Number	RKEF250
Manufacturer	Littelfuse Inc.
Description	POLYSWITCH PTC RESET 2.5A T/H
Datasheet	RKEF250 Datasheet RKEF250 Specifications
Package	Radial, Disc
ECAD
In Stock	42,930 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	Jun 10 - Jun 15 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # RKEF250 (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 RKEF250 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add RKEF250 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of RKEF250.

RKEF250 Specifications

Manufacturer	Littelfuse Inc.
Category	Circuit Protection - PTC Resettable Fuses
Package	Radial, Disc
ECAD
Series	PolySwitch?, RKEF
Type	Polymeric
Voltage - Max	60V
Current - Max	40A
Current - Hold (Ih) (Max)	2.5A
Current - Trip (It)	5A
Time to Trip	15.6s
Resistance - Initial (Ri) (Min)	40 mOhms
Resistance - Post Trip (R1) (Max)	140 mOhms
Resistance - 25°C (Typ)	-
Operating Temperature	-40°C ~ 85°C
Ratings	-
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.512" L x 0.150" W (13.00mm x 3.81mm)
Height - Seated (Max)	0.740" (18.80mm)
Thickness (Max)	-
Lead Spacing	0.200" (5.08mm)

RKEF250 Datasheet

RKEF250 Reviews

Hayl*****anghvi

April 7, 2023

★ ★ ★ ★ ★

Great Seller, Great Item, the quality is great, Highly Recommended.

Huds*****ancock

March 29, 2023

★ ★ ★ ★ ★

Superb pricing and super fast delivery.

Soph*****urch

March 25, 2023

★ ★ ★ ★ ★

Used it on my system it works perfect as I need.

Ave*****Setty

March 20, 2023

★ ★ ★ ★ ★

Excellent ! RKEF250 item arrived very quickly and was packaged well, no issues.

Nata*****Comar

March 17, 2023

★ ★ ★ ★ ★

Easier, quicker and cheaper to buy this whole assortment than to get just the few I needed from an electronics store.

Kami*****adan

March 11, 2023

★ ★ ★ ★ ★

Thanks a lot! Ease of ordering and I love when they upgrade my shipping for free. What a nice thing to do.

Tre*****orne

March 5, 2023

★ ★ ★ ★ ★

Great deal, immediate response and very quick delivery!

Fion*****inner

February 21, 2023

★ ★ ★ ★ ★

Great product at a great price. They were so CHEAP.

Luna*****derick

February 20, 2023

★ ★ ★ ★ ★

The pricing is great. This is the first time I use Heisener Electronics but I will recommend it to my business partners.

Write a Review

★★★★★

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Thanks for Your Review!

RKEF250 Packaging

RKEF250 FAQ

1. How to order RKEF250 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 RKEF250 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the RKEF250. All suppliers must pass our qualification reviews before they can publish their products including RKEF250 on Heisener; we pay more attention to the channels and quality of RKEF250 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the RKEF250 price and inventory displayed accurate?

The price and inventory of RKEF250 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 RKEF250?

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 RKEF250 we delivered, we will accept the replacement or return of the RKEF250 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 RKEF250.

(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 RKEF250 pin diagram, RKEF250 datasheet?

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

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RKEF250 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

RKEF250

D# V99:2348_11453181

Littelfuse Inc

PTC Resettable Fuse 2.5A(hold) 5A(trip) 60V 40A 2.8W 15.6s 0.04Ohm Radial 14 X 3 X 20.6mm Bulk

RoHS: Compliant

Part Number

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Description

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RS60SB-250(CROSS: RKEF250)

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6000

RKEF250

TE Connectivity

597

Part Number

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RKEF250K

TE Connectivity

POLYSWITCH PTC RESET 2.5A

RKEF250

TE Connectivity

Lead time 63

291

Part Number

Manufacturer

Description

Stock

RKEF250

D# C1S425201068709

Littelfuse Inc

PTC Resettable Fuse 2.5A(hold) 5A(trip) 60V 40A 2.8W 15.6s 0.04Ohm Radial 14 X 3 X 20.6mm Bulk

RoHS: Compliant

Min Qty: 5

Container: Bulk

123

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RKEF250K

Littelfuse Inc

Through Hole PTC Resettable Fuses RoHS

135

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RKEF250

Littelfuse Inc

RoHS (ship within 1day) - D/C 2020

344

Part Number

Manufacturer

Description

Stock

RKEF250

D# RKEF250HF-ND

Littelfuse Inc

PTC RESET FUSE 60V 2.5A RADIAL

RKEF250K

D# RKEF250KHF-ND

Littelfuse Inc

PTC RESET FUSE 60V 2.5A RADIAL

2272

Part Number

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RKEF250

In stock shipping within 2days

8260

Part Number

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RKEF250

D# 2786679

Littelfuse Inc

FUSE, RESETTABLE PTC, 60VDC, 2.5A, THD

RoHS: Compliant

Min Qty: 1

Container: Each

311

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RKEF250

Littelfuse Inc

RoHS: Compliant

pbFree: Yes

15000

RKEF250K

Littelfuse Inc

RoHS: Compliant

pbFree: Yes

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Manufacturer

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RKEF250

TE CONNECTIVITY

In Stock

597

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RKEF250K

D# C468996

Littelfuse Inc

Part Number

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Description

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RKEF250

TE Connectivity

OEM/CM Immediate delivery

8000

Part Number

Manufacturer

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RKEF250K

D# 650-RKEF250K

Littelfuse Inc

Resettable Fuses - PPTC 60V 40A 0.085Ohms

RoHS: Compliant

312

Part Number

Manufacturer

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Stock

RKEF250

D# XSFP00000198298

Littelfuse Inc

RGEF Series 60 V 2.5 A Ihold Through Hole Radial PolySwitch Resettable Fuse

12000

Part Number

Manufacturer

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RKEF250

D# 28AC1689

TE Connectivity

FUSE, PTC RESET, 60V, 40A, RADIAL, Thermistor Mounting:Through Hole, Product Range:PolySwitch RKEF Series, Holding Current:2.5A, Tripping Current:5A, Voltage Rating:60VDC, Operating Temperature Min:-40°C, Operating Temperature RoHS Compliant: Yes

RoHS: Compliant

Min Qty: 1

Container: Cut Tape

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Description

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RKEF250

D# NS-RKEF250

TE Connectivity

OEM/CM ONLY

8108

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RKEF250

D# 7127496

Littelfuse Inc

Littelfuse 2.5A Hold current, Radial Leaded PCB Mount Resettable Fuse, 60V, PK

Min Qty: 10

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RKEF250K

Littelfuse Inc

OEM/CM ONLY

2995

RKEF250

TE Connectivity

OEM/CM ONLY

4016

Part Number

Manufacturer

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RKEF250

TE Connectivity

IN stock Immediate delivery

8015

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RKEF250

TE Connectivity

shipping today

996

Part Number

Manufacturer

Description

Stock

RKEF250

D# 36536064

Littelfuse Inc

PTC Resettable Fuse 2.5A(hold) 5A(trip) 60V 40A 2.8W 15.6s 0.04Ohm Radial 14 X 3 X 20.6mm Bulk

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

RKEF250

D# 2474205RL

TE Connectivity

FUSE, PTC RESET, 60V, 40A, RADIAL

RoHS: Compliant

Min Qty: 1

Container: Reel

Quick Inquiry

RKEF250

Certified Quality

Heisener's commitment to quality has shaped our processes for sourcing, testing, shipping, and every step in between. This foundation underlies each component we sell.

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