Name: U843
Brand: APEM Inc.
SKU: U843
Availability: InStock
Rating: 5 (130 reviews)

U843

For Reference Only

Part Number	U843
Manufacturer	APEM Inc.
Description	SWITCH HARDWARE
Datasheet	U843 Specifications
Package	-
ECAD
In Stock	2,988 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	May 16 - May 21 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # U843 (Accessories) is manufactured by APEM 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 U843 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add U843 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of U843.

U843 Specifications

Manufacturer	APEM Inc.
Category	Switches - Accessories
Package	-
ECAD
Series	*
Accessory Type	-
For Use With/Related Products	-

U843 Reviews

Adel*****otts

April 1, 2023

★ ★ ★ ★ ★

I have used 2 of the 10 units so far and they work fine.

For*****oseph

April 1, 2023

★ ★ ★ ★ ★

Heisener has been the best in this industry for many years. Very quick and easy if you know what you are looking for. if you don't know exactly what you are looking for, you are going to be lost.

Mar*****King

March 23, 2023

★ ★ ★ ★ ★

I am always amazed at the cost of automotive or marine costs when a rectifier is needed while these will do the exact same thing if you are a bit technically minded to wire them up.

Harle*****offman

March 14, 2023

★ ★ ★ ★ ★

What can I say, great value for the money. I only needed 2 but now I have some spares for future projects. They got the job done, nothing more I can say.

Atla*****llen

March 11, 2023

★ ★ ★ ★ ★

Parts received and tested, all can work, thank you

Coh*****Raj

March 11, 2023

★ ★ ★ ★ ★

Great product & fast shipping. Works as they should.

Debo*****Marsh

February 28, 2023

★ ★ ★ ★ ★

High level customer service, and quick response.

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U843 Packaging

U843 FAQ

1. How to order U843 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 U843 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the U843. All suppliers must pass our qualification reviews before they can publish their products including U843 on Heisener; we pay more attention to the channels and quality of U843 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the U843 price and inventory displayed accurate?

The price and inventory of U843 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 U843?

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 U843 we delivered, we will accept the replacement or return of the U843 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 U843.

(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 U843 pin diagram, U843 datasheet?

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

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U843 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
50M56U-843 D# 71204738	White-Rodgers	Universal Integrated Furnace Control Hot Surface Ignition Includes 21D64-2 Unive RoHS: Not Compliant	3
RU843HR1420 D# 71003295	Akro-Mils	Dolly, Steel, 14x20, Polyolefin Casters RoHS: Not Compliant	0
21M51U-843 D# 71204541	White-Rodgers	Universal Integrated Furnace Control Two Stage Hot Surface Ignition For 3 Speed RoHS: Not Compliant	9
47D01U-843 D# 71204689	White-Rodgers	Universal Single Stage Heat Pump Defrost Control For PSC Fan Heat Pump Systems. RoHS: Not Compliant	0
21V51U-843 D# 71204543	White-Rodgers	Universal Integrated Furnace Control Two Stage Hot Surface Ignition For 3 Speed RoHS: Not Compliant	0

Part Number

Manufacturer

Description

Stock

50M56U-843

WHITE RODGER

Part Number

Manufacturer

Description

Stock

U843

MILBANK

Meter Socket 1PH 3W OH/UG

Part Number

Manufacturer

Description

Stock

U843

D# U843-ND

APEM Inc

SWITCH HARDWARE

Part Number	Manufacturer	Description	Stock
50M56U-843 D# 2809794	White-Rodgers	IGNITION CONTROLLER KIT, SINGLE-STAGE RoHS: Not Compliant Min Qty: 10 Container: Each	0
21M51U-843 D# 2809777	White-Rodgers	IGNITION CONTROLLER KIT, TWO-STAGE RoHS: Not Compliant Min Qty: 1 Container: Each	3
47D01U-843 D# 2809779	White-Rodgers	DEFROST CONTROL, 0% TO 95% RH, 24VAC RoHS: Not Compliant Min Qty: 1 Container: Each	2
21V51U-843 D# 2809778	White-Rodgers	IGNITION CONTROLLER KIT, TWO-STAGE RoHS: Not Compliant Min Qty: 1 Container: Each	4

Part Number	Manufacturer	Description	Stock
U8436K	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	2
U8430G	PU	OEM/CM QUOTES ONLY \| NO BROKERS	476
21V51U843	WHITE RODGERS	OEM/CM QUOTES ONLY \| NO BROKERS	8
50M56U843	WHITE RODGER	OEM/CM QUOTES ONLY \| NO BROKERS	6
TRU843	TRU	OEM/CM QUOTES ONLY \| NO BROKERS	1
U8436AK	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	2
U8438K	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	2
TRU8439SSX	TRU	OEM/CM QUOTES ONLY \| NO BROKERS	1
U8439AK	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	2
TRU8435SST	TRU	OEM/CM QUOTES ONLY \| NO BROKERS	177
TRU8431SSTR	TRU	OEM/CM QUOTES ONLY \| NO BROKERS	1
U8439	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	1
21M51U843	WHITE RODGERS	OEM/CM QUOTES ONLY \| NO BROKERS	7
TRU8438SLTR	TRU	OEM/CM QUOTES ONLY \| NO BROKERS	10
E28F016VSV70U8430772FH	Intel Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	23

Part Number

Manufacturer

Description

Stock

U843

D# 642-U843

APEM Inc

Switch Hardware LOCKWASHER 10mm

RoHS: Compliant

155

Part Number	Manufacturer	Description	Stock
50M56U-843 D# 33AC4125	White-Rodgers	IGNITION CONTROLLER KIT, SINGLE-STAGE, Kit Contents:Ignition Ctrl Mod, Wiring Harnesses, Universal Ignitor Kit, Install Instructions & OEM Cross-Ref, Product Range:- RoHS: Not Compliant Min Qty: 10 Container: Bulk	0
260F-U84-304SS-2-300RF-304SS D# 60AH9760	Omega Engineering	Thermowells: Flanged Wells RoHS: Not Compliant Min Qty: 1 Container: Bulk	0
21M51U-843 D# 33AC4108	White-Rodgers	IGNITION CONTROLLER KIT, TWO-STAGE, Kit Contents:Ignition Ctrl Mod, Universal Ignitor Kit, Installation Instructions & OEM Cross-Ref, Product Range:- RoHS: Not Compliant Min Qty: 1 Container: Bulk	3
47D01U-843 D# 33AC4110	White-Rodgers	DEFROST CONTROL, 0% TO 95% RH, 24VAC, Rated Voltage:24V, Humidity Range:0% to 95% Relative Humidity, Operating Temperature Min:-40°C, Operating Temperature Max:65°C, Product Range:47D SERIES RoHS: Not Compliant Min Qty: 1 Container: Bulk	2
21V51U-843 D# 33AC4109	White-Rodgers	IGNITION CONTROLLER KIT, TWO-STAGE, Kit Contents:Ignition Ctrl Mod, Wiring Harness, Universal Ignitor Kit, Installation Instructions & OEM Cross-Ref, Product Range:- RoHS: Not Compliant Min Qty: 1 Container: Bulk	4

Part Number

Manufacturer

Description

Stock

U843

D# NS-U843

APEM Inc

OEM/CM ONLY

6199

Part Number	Manufacturer	Description	Stock
21M51U843	White-Rodgers	OEM/CM ONLY	98
U8439K	Motorola Semiconductor Products	OEM/CM ONLY	689
U8430G	PU	OEM/CM ONLY	416
21V51U843	White-Rodgers	OEM/CM ONLY	99
U84317 74.62083MHZ	Nihon Dempa Kogyo Co Ltd	OEM/CM ONLY	4316
47D01U843	White-Rodgers	OEM/CM ONLY	97
ST CHN 063EC K2U843MC34063ECN	STMicroelectronics	OEM/CM ONLY	116
U843B	Telefunken Semiconductor GmbH & Co Kg	OEM/CM ONLY	138
TRU8435SST	TRU	OEM/CM ONLY	165

Part Number

Manufacturer

Description

Stock

STU8438

SGS Semiconductor Ltd

RFQ

8739

Part Number	Manufacturer	Description	Stock
50M56U-843 D# 2809794	White-Rodgers	IGNITION CONTROLLER KIT, SINGLE-STAGE RoHS: Not Compliant Min Qty: 1 Container: Each	0
21M51U-843 D# 2809777	White-Rodgers	IGNITION CONTROLLER KIT, TWO-STAGE RoHS: Not Compliant Min Qty: 1 Container: Each	3
47D01U-843 D# 2809779	White-Rodgers	DEFROST CONTROL, 0% TO 95% RH, 24VAC RoHS: Not Compliant Min Qty: 1 Container: Each	2
21V51U-843 D# 2809778	White-Rodgers	IGNITION CONTROLLER KIT, TWO-STAGE RoHS: Not Compliant Min Qty: 1 Container: Each	4

Quick Inquiry

U843

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.

ISO9001:2015, ICAS, IAF, UKAS