Name: UC3843BN
Brand: STMicroelectronics
SKU: UC3843BN_235
Price: 0.9444 USD
Availability: InStock
Rating: 5 (137 reviews)

UC3843BN

For Reference Only

Part Number	UC3843BN
Manufacturer	STMicroelectronics
Description	IC REG CTRLR BST/FLYBK 8-MINIDIP
Datasheet	UC3843BN Datasheet UC3843BN Specifications
Package	8-DIP (0.300", 7.62mm)
ECAD
In Stock	3,119,484 piece(s)
Unit Price	$ 0.9444 *
Lead Time	Can Ship Immediately
Estimated Delivery Time	Apr 29 - May 4 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # UC3843BN (PMIC - Voltage Regulators - DC DC Switching Controllers) is manufactured by STMicroelectronics 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 UC3843BN specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add UC3843BN with quantity into BOM. Heisener.com does NOT require any registration to request a quote of UC3843BN.

UC3843BN Specifications

Manufacturer	STMicroelectronics
Category	Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Controllers
Package	8-DIP (0.300", 7.62mm)
ECAD
Series	-
Output Type	Transistor Driver
Function	Step-Up/Step-Down
Output Configuration	Positive, Isolation Capable
Topology	Boost, Flyback
Number of Outputs	1
Output Phases	1
Voltage - Supply (Vcc/Vdd)	7.6 V ~ 30 V
Frequency - Switching	250kHz
Duty Cycle (Max)	96%
Synchronous Rectifier	No
Clock Sync	No
Serial Interfaces	-
Control Features	Frequency Control
Operating Temperature	-40°C ~ 150°C (TJ)
Package / Case	8-DIP (0.300", 7.62mm)
Supplier Device Package	8-Mini DIP

UC3843BN Datasheet

UC3843BN Reviews

Marc*****Potts

April 2, 2023

★ ★ ★ ★ ★

The prices are very competitive, I've had a few transactions lately and all were smooth as glass. I'm a very satisfied customer!

Mae*****lan

March 21, 2023

★ ★ ★ ★ ★

Order arrived to Estonia in 3 days. Item as described. Well packed.

Hea*****Khare

March 15, 2023

★ ★ ★ ★ ★

So easy to do business with Heisener and they generally have stock on the items we need.

Jen*****Mckee

March 13, 2023

★ ★ ★ ★ ★

Worked very well! I would highly recommend buying.

Conr*****ingh

March 3, 2023

★ ★ ★ ★ ★

Very Quick,no problems - Thank you.

Brys*****llis

February 22, 2023

★ ★ ★ ★ ★

Various selection and thoughtful services! Prices are competitive as well. Thank you!

Write a Review

★★★★★

Not Rated

Thanks for Your Review!

UC3843BN Packaging

UC3843BN FAQ

1. How to order UC3843BN 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 UC3843BN is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the UC3843BN. All suppliers must pass our qualification reviews before they can publish their products including UC3843BN on Heisener; we pay more attention to the channels and quality of UC3843BN products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the UC3843BN price and inventory displayed accurate?

The price and inventory of UC3843BN 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 UC3843BN?

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 UC3843BN we delivered, we will accept the replacement or return of the UC3843BN 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 UC3843BN.

(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 UC3843BN pin diagram, UC3843BN datasheet?

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

UC3843BN Related Products

1825Y4K00151KCT	Knowles Syfer, CAP CER 1825, 1825 (4564 Metric), -	View
ECE-V1EA330SP	Panasonic Electronic Components, CAP ALUM 33UF 20% 25V SMD, Radial, Can - SMD, -	View
2SB09450Q	Panasonic Electronic Components, TRANS PNP 80V 5A TO-220F, TO-220-3 Full Pack, -	View
IEGF6-32009-15-V	Sensata Technologies/Airpax, CIR BRKR MAG-HYDR LEVER, -, -	View
Y3806	Laird Technologies IAS, ANT YAGI 6ELEM 380-406MHZ GOLD, -, -	View
RWR89S3920FSS70	Vishay Dale, RES 392 OHM 3W 1% WW AXIAL, Axial, -	View
D55342E07B1B96RT5	Vishay Dale, RES SMD 1.96K OHM 0.1% 1/4W 1206, 1206 (3216 Metric), -	View
DWM-06-58-G-S-410	Samtec Inc., .050" BOARD SPACERS, -, -	View
M83723/75A22559	Amphenol Aerospace Operations, CONN PLUG 55POS STRGHT W/SKT, -, -	View
MS27473P16B42S	Amphenol Aerospace Operations, JT 42C 42#22 SKT PLUG, -, -	View
MS27467T11A98S-LC	Amphenol Aerospace Operations, CONN PLUG HSNG FMALE 6POS INLINE, -, -	View
XC6222D321ER-G	Torex Semiconductor Ltd, 700MA HIGH SPEED LDO REGULATOR, -, -	View

UC3843BN 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

UC3843BNG

D# E02:0323_00018819

ON Semiconductor

Current Mode PWM Controller 1A 500kHz 8-Pin PDIP Tube

RoHS: Compliant

UC3843BN

D# V99:2348_17627888

STMicroelectronics

Current Mode PWM Controller 1A 500kHz 8-Pin PDIP Tube

RoHS: Compliant

Part Number	Manufacturer	Description	Stock
UC3843BNG D# UC3843BNG	ON Semiconductor	Current Mode PWM Controller 1A 8-Pin PDIP Rail - Rail/Tube (Alt: UC3843BNG)	0
UC3843BN D# UC3843BN	STMicroelectronics	Current Mode PWM Controller 1A 8-Pin PDIP - Rail/Tube (Alt: UC3843BN)	0
E-UC3843BN D# E-UC3843BN	STMicroelectronics	Current Mode PWM Controller 1A 8-Pin PDIP - Rail/Tube (Alt: E-UC3843BN) RoHS: Compliant	0

Part Number

Manufacturer

Description

Stock

UC3843BNG

D# UC3843BNG

ON Semiconductor

Current Mode PWM Controller 1A 8-Pin PDIP Rail (Alt: UC3843BNG)

UC3843BN

D# UC3843BN

STMicroelectronics

Current Mode PWM Controller 1A 8-Pin PDIP (Alt: UC3843BN)

Part Number

Manufacturer

Description

Stock

UC3843BNG

D# UC3843BNG

ON Semiconductor

Current Mode PWM Controller 1A 8-Pin PDIP Rail (Alt: UC3843BNG)

UC3843BN

D# UC3843BN

STMicroelectronics

Current Mode PWM Controller 1A 8-Pin PDIP (Alt: UC3843BN)

Part Number

Manufacturer

Description

Stock

UC3843BN

ACTIVE COMPNTS/DIODES

Part Number

Manufacturer

Description

Stock

UC3843BNG

ON Semiconductor

UC3843BN

ON Semiconductor

100

Part Number

Manufacturer

Description

Stock

UC3843BNG

D# 50S2275

ON Semiconductor

PWM CONTROLLER UC3843BNG

1676

Part Number	Manufacturer	Description	Stock
E-UC3843BN	STMicroelectronics	IC, PWM CONTROLLER, 3843, DIP8, Input Voltage:15V, Output Voltage:13.5V, Output Current:200mA, Supply Voltage Min:12V, Supply Voltage Max:25V, Controller IC Case Style:DIP, No. of Pins:8, Frequency:250kHz, Operating Temperature , RoHS Compliant: Yes	2053
UC3843BNG	ON Semiconductor	ANA SMPS PWM CONTROLLER	12000
UC3843BN	ON Semiconductor	ANA SMPS PWM CONTROLLER	12000

Part Number

Manufacturer

Description

Stock

UC3843BN

D# C1S730200411596

STMicroelectronics

Current Mode PWM Controller 1A 500kHz 8-Pin PDIP Tube

RoHS: Compliant

pbFree: Yes

Min Qty: 5

Container: Tube

3815

Part Number

Manufacturer

Description

Stock

UC3843BNG

ON Semiconductor

DIP-8 Switching Controllers RoHS

154

UC3843BN

STMicroelectronics

DIP-8 Switching Controllers RoHS

1150

Part Number

Manufacturer

Description

Stock

UC3843BN

STMicroelectronics

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDIP8

RoHS: Not Compliant

Part Number	Manufacturer	Description	Stock
E-UC3843BN D# E-UC3843BN-ND	STMicroelectronics	IC REG CTRLR BST/FLYBK 8-MINIDIP	0
UC3843BNG D# UC3843BNGOS-ND	ON Semiconductor	IC REG CTRLR FLYBACK 8DIP	767
UC3843BN D# 497-6786-5-ND	STMicroelectronics	IC REG CTRLR BST/FLYBK 8-MINIDIP	433

Part Number

Manufacturer

Description

Stock

UC3843BN

STMicroelectronics

In stock shipping within 2days

10260

UC3843BN-3LF

STMicroelectronics

In stock shipping within 2days

350

Part Number	Manufacturer	Description	Stock
UC3843BNG D# 2382335	ON Semiconductor	PWM CTRL, CURRENT MODE, 30V, 1A, DIP-8 RoHS: Compliant Min Qty: 1 Container: Each	767
UC3843BN D# 2849824	STMicroelectronics	PWM CONT, CURRENT MODE, 500KHZ, MINIDIP RoHS: Compliant Min Qty: 1 Container: Each	1571
E-UC3843BN D# 9882847	STMicroelectronics	IC, PWM CONTROLLER, 3843, DIP8 RoHS: Compliant Min Qty: 1 Container: Each	95

Part Number

Manufacturer

Description

Stock

UC3843BNG

ON Semiconductor

NEW AND ORGINAL. ISRAEL W.HOUSE

1111

Part Number

Manufacturer

Description

Stock

UC3843BNG

ON Semiconductor

UC3843B Series 30 V 275 kHz High Performance Current Mode Controller - PDIP-8

RoHS: Compliant

pbFree: Yes

Part Number	Manufacturer	Description	Stock
UC3843BNG	ON SEMICONDUCTOR	OEM/CM QUOTES ONLY \| NO BROKERS	23800
UC3843BN3LF	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	27452
UC3843BN	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	117496
EUC3843BN	STMICROELECTRONICS	OEM/CM QUOTES ONLY \| NO BROKERS	312

Part Number

Manufacturer

Description

Stock

UC3843BNGON

Texas Instruments

OEM/CM ONLY

131

EUC3843BN

Texas Instruments

OEM/CM ONLY

138

Part Number

Manufacturer

Description

Stock

UC3843BNG

D# C5290

ON Semiconductor

154

UC3843BN

D# C5177

STMicroelectronics

3086

Part Number

Manufacturer

Description

Stock

UC3843BN

STMicroelectronics

in stock - can ship the same day

Part Number	Manufacturer	Description	Stock
UC3843BN	STMicroelectronics	OEM/CM Immediate delivery	30000
UC3843BN-LF	STMicroelectronics	OEM/CM Immediate delivery	952
UC3843BNG	ON Semiconductor	OEM/CM Immediate delivery	8800

Part Number

Manufacturer

Description

Stock

UC3843BNG

D# 863-UC3843BNG

ON Semiconductor

Switching Controllers 52kHz 1A Current PWM w/96% Duty Cycle Max

RoHS: Compliant

1479

UC3843BN

D# 511-UC3843BN

STMicroelectronics

Switching Controllers 0.5mA Current Mode

RoHS: Compliant

2899

Part Number

Manufacturer

Description

Stock

UC3843BN

D# XSKDRABS0035959

STMicroelectronics

PDIP 08 .3 CU/OFF LINE CMOD PW

7090

UC3843BNG

D# XSKDRABS0046568

ON SEMICONDUCTOR

PDIP 8/C/HIGH PERFORMANCE CURRENT MODE CONTROLLER

1000

Part Number	Manufacturer	Description	Stock
UC3843BNG. D# 28AC5402	ON Semiconductor	Input Voltage:30V, Output Voltage:5V, Output Current:1A, Supply Voltage Min:-, Supply Voltage Max:30V, Controller IC Case Style:DIP, No. of Pins:8Pins, Frequency:250kHz, Operating Temperature Min:0°C, Operating Temperature Max:70°C RoHS Compliant: Yes RoHS: Compliant Min Qty: 2400 Container: Bulk	0
UC3843BNG D# 37X9040	ON Semiconductor	PWM CTRL, CURRENT MODE, 30V, 1A, DIP-8, Input Voltage:-, Output Voltage:13.5V, Output Current:1A, Supply Voltage Min:12V, Supply Voltage Max:30V, Controller IC Case Style:DIP, No. of Pins:8Pins, Frequency:52kHz, Operating TemperatureRoHS Compliant: Yes RoHS: Compliant Min Qty: 1 Container: Bulk	464
UC3843BN. D# 15AC5104	STMicroelectronics	Input Voltage:15V, Output Voltage:5.05V, Output Current:200mA, Supply Voltage Min:12V, Supply Voltage Max:25V, Controller IC Case Style:SOIC, No. of Pins:8Pins, Frequency:250kHz, Operating Temperature Min:-25°C, Product Range:- RoHS Compliant: Yes RoHS: Compliant Min Qty: 2000 Container: Bulk	0

Part Number

Manufacturer

Description

Stock

UC3843BNG

D# NS-UC3843BNG

ON Semiconductor

OEM/CM ONLY

8841

UC3843BN

D# NS-UC3843BN

ON Semiconductor

OEM/CM ONLY

9356

Part Number

Manufacturer

Description

Stock

UC3843BN

STMicroelectronics

Swithed-Mode Power Supply Controller, Current Mode Type, Bi-Polar, 8 Pin, Plastic, DIP

UC3843BNG

ON Semiconductor

1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP8

Part Number

Manufacturer

Description

Stock

UC3843BNG

D# 5165152

ON Semiconductor

ON Semiconductor UC3843BNG, PWM Current Mode Controller, 1 A, 500 kHz, 8-Pin PDIP, EA

Min Qty: 1

Container: Bulk

170

UC3843BN

D# 6865024

STMicroelectronics

STMicroelectronics UC3843BN, PWM Current Mode Controller, 1 A, 500 kHz, 8-Pin PDIP, PK

Min Qty: 10

Container: Package

270

Part Number

Manufacturer

Description

Stock

UC3843BNG

ON Semiconductor

UC3843 Current-Mode PWM Controller

RoHS: Compliant

171163

Part Number

Manufacturer

Description

Stock

UC3843BN

D# ICPWM6759

STMicroelectronics

SMPS DIP-8 SMD

RoHS: Compliant

Part Number	Manufacturer	Description	Stock
UC3843BN	STMicroelectronics	OEM/CM ONLY	99152
UC3843BN3LF		OEM/CM ONLY	3164
UC3843BNG	ON Semiconductor	OEM/CM ONLY	20116
EUC3843BN	STMicroelectronics	OEM/CM ONLY	65

Part Number	Manufacturer	Description	Stock
UC3843BN-LF	STMicroelectronics	IN stock Immediate delivery	947
UC3843BNG	ON Semiconductor	IN stock Immediate delivery	8815
UC3843BN	STMicroelectronics	IN stock Immediate delivery	29985

Part Number	Manufacturer	Description	Stock
UC3843BNG	ON Semiconductor	shipping today	3996
UC3843BN	ON Semiconductor	shipping today	11302
UC3843BN-3LF	Marvell Technology Group Ltd	shipping today	696

Part Number

Manufacturer

Description

Stock

UC3843BNG

D# 53810914

ON Semiconductor

Current Mode PWM Controller 1A 500kHz 8-Pin PDIP Tube

RoHS: Compliant

UC3843BN

D# 30596865

STMicroelectronics

Current Mode PWM Controller 1A 500kHz 8-Pin PDIP Tube

RoHS: Compliant

Part Number	Manufacturer	Description	Stock
E-UC3843BN	STMicroelectronics	RFQ	7837
UC3843BNG	ON Semiconductor	RFQ	2312
UC3843BNGOS	ON Semiconductor	RFQ	9487

Part Number

Manufacturer

Description

Stock

UC3843BN

STMicroelectronics

IC REG CTRLR BST/FLYBK 8-MINIDIP

307432

UC3843BNG

ON Semiconductor

IC REG CTRLR FLYBACK 8DIP

138455

Part Number	Manufacturer	Description	Stock
UC3843BN D# 2849824	STMicroelectronics	PWM CONT, CURRENT MODE, 500KHZ, MINIDIP RoHS: Compliant Min Qty: 1 Container: Each	1548
UC3843BNG D# 2382335	ON Semiconductor	PWM CTRL, CURRENT MODE, 30V, 1A, DIP-8 RoHS: Compliant Min Qty: 1 Container: Each	504
E-UC3843BN D# 9882847	STMicroelectronics	IC, PWM CONTROLLER, 3843, DIP8 RoHS: Compliant Min Qty: 1 Container: Each	45

Quick Inquiry

UC3843BN

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