Name: RWR78N4991FRB12
Brand: Vishay Dale
SKU: RWR78N4991FRB12
Availability: InStock
Rating: 5 (69 reviews)

RWR78N4991FRB12

For Reference Only

Part Number	RWR78N4991FRB12
Manufacturer	Vishay Dale
Description	RES 4.99K OHM 10W 1% WW AXIAL
Datasheet	RWR78N4991FRB12 Datasheet RWR78N4991FRB12 Specifications
Package	Axial
ECAD
In Stock	2,916 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	Apr 30 - May 5 (Choose Expedited Shipping)
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Part Number # RWR78N4991FRB12 (Through Hole Resistors) is manufactured by Vishay Dale 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 RWR78N4991FRB12 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add RWR78N4991FRB12 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of RWR78N4991FRB12.

RWR78N4991FRB12 Specifications

Manufacturer	Vishay Dale
Category	Resistors - Through Hole Resistors
Package	Axial
ECAD
Series	Military, MIL-PRF-39007, RWR78N
Resistance	4.99 kOhms
Tolerance	±1%
Power (Watts)	10W
Composition	Wirewound
Features	Military, Moisture Resistant, Non-Inductive
Temperature Coefficient	±20ppm/°C
Operating Temperature	-55°C ~ 250°C
Package / Case	Axial
Supplier Device Package	Axial
Size / Dimension	0.375" Dia x 1.780" L (9.53mm x 45.21mm)
Height - Seated (Max)	-
Number of Terminations	2
Failure Rate	R (0.01%)

RWR78N4991FRB12 Datasheet

RWR78N4991FRB12 Reviews

Jad*****ckson

April 7, 2023

★ ★ ★ ★ ★

Serves its purpose. All that's needed.

Aless***** Bera

April 3, 2023

★ ★ ★ ★ ★

I am a novice technician. I really rely on reviews to help guide me, as I do not have anyone to assist me with electronics. I purchased these items and report I am happy with the purchase. I took a chance and it was one of the better choices I made.

Leig***** Raval

March 18, 2023

★ ★ ★ ★ ★

Great condition, super kind person, quick shipping! and great price too!

Zair*****menez

March 10, 2023

★ ★ ★ ★ ★

To be honest, I think you are doing an outstanding job.

Jaxxo*****zgerald

March 7, 2023

★ ★ ★ ★ ★

Have never had a problem with my order. Packages arrive on time and in great condition.

Rob*****o May

February 25, 2023

★ ★ ★ ★ ★

Great deal, immediate response and very quick delivery!

Zain*****ierce

February 19, 2023

★ ★ ★ ★ ★

All items individually packed in anti static bags and properly labeled.

Kill*****Murty

February 19, 2023

★ ★ ★ ★ ★

All of the components worked, and are still working. So even though the price is amazingly low, the diodes really do work!

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RWR78N4991FRB12 Packaging

RWR78N4991FRB12 FAQ

1. How to order RWR78N4991FRB12 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 RWR78N4991FRB12 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the RWR78N4991FRB12. All suppliers must pass our qualification reviews before they can publish their products including RWR78N4991FRB12 on Heisener; we pay more attention to the channels and quality of RWR78N4991FRB12 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the RWR78N4991FRB12 price and inventory displayed accurate?

The price and inventory of RWR78N4991FRB12 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 RWR78N4991FRB12?

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 RWR78N4991FRB12 we delivered, we will accept the replacement or return of the RWR78N4991FRB12 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 RWR78N4991FRB12.

(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 RWR78N4991FRB12 pin diagram, RWR78N4991FRB12 datasheet?

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

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RWR78N4991FRB12 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

RWR78N4991FRB12

D# RWR78N4991FRB12

Vishay Intertechnologies

Res Wirewound 4.99K Ohm 1% 10W ±20ppm/°C 0.01% Ceramic Hi Temp Sil AXL Thru-Hole Bulk - Bulk (Alt: RWR78N4991FRB12)

RoHS: Not Compliant

Part Number

Manufacturer

Description

Stock

RWR78N4991FRB12

Vishay Dale

RES WW 4.99K OHM 1% 10W 20PPM/ C 0.01% AXL TH - Bulk

Part Number

Manufacturer

Description

Stock

RWR78N4991FRB12

D# RWR78N4991FRB12-ND

Vishay Dale

RES 4.99K OHM 10W 1% WW AXIAL

Part Number

Manufacturer

Description

Stock

RWR78N4991FRB12

D# NS-RWR78N4991FRB12

Vishay Dale

OEM/CM ONLY

7519

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RWR78N4991FRB12

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