UC3843BD1R2G is out of stock and can be placed on backorder.
Available Substitutes:

Upgrade


Microchip Technology
In Stock: 0
Unit Price: $0.00000
Datasheet

Upgrade


Microchip Technology
In Stock: 0
Unit Price: $0.00000
Datasheet

Similar


Microchip Technology
In Stock: 0
Unit Price: $1.90000
Datasheet

Similar


Microchip Technology
In Stock: 0
Unit Price: $1.90000
Datasheet

Direct


Texas Instruments
In Stock: 10,000
Unit Price: $1.17000
Datasheet

Direct


Texas Instruments
In Stock: 2,500
Unit Price: $0.46720
Datasheet

Direct


Texas Instruments
In Stock: 0
Unit Price: $0.97000
Datasheet

Direct


Texas Instruments
In Stock: 0
Unit Price: $0.82080
Datasheet

Direct


Texas Instruments
In Stock: 0
Unit Price: $1.20000
Datasheet

Direct


Texas Instruments
In Stock: 0
Unit Price: $0.97000
Datasheet

Direct


Texas Instruments
In Stock: 0
Unit Price: $1.60000
Datasheet

Upgrade


Texas Instruments
In Stock: 0
Unit Price: $0.52000
Datasheet

Upgrade


Texas Instruments
In Stock: 0
Unit Price: $0.52000
Datasheet

Upgrade


Texas Instruments
In Stock: 0
Unit Price: $0.52000
Datasheet
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

UC3843BD1R2G

DigiKey Part Number
UC3843BD1R2GOSTR-ND - Tape & Reel (TR)
UC3843BD1R2GOSCT-ND - Cut Tape (CT)
UC3843BD1R2GOSDKR-ND - Digi-Reel®
Manufacturer
Manufacturer Product Number
UC3843BD1R2G
Description
IC REG CTRLR FLYBACK 8SOIC
Manufacturer Standard Lead Time
16 Weeks
Customer Reference
Detailed Description
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Datasheet
 Datasheet
EDA/CAD Models
UC3843BD1R2G Models
Product Attributes
Filter Similar Products
Show Empty Attributes
Category
Frequency - Switching
Up to 500kHz
Manufacturer
onsemi
Duty Cycle (Max)
96%
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Synchronous Rectifier
No
Part Status
Active
Clock Sync
No
Output Type
Transistor Driver
Control Features
Frequency Control
Function
Step-Up, Step-Up/Step-Down
Operating Temperature
0°C ~ 70°C (TA)
Output Configuration
Positive, Isolation Capable
Mounting Type
Surface Mount
Topology
Boost, Flyback
Package / Case
8-SOIC (0.154", 3.90mm Width)
Number of Outputs
1
Supplier Device Package
8-SOIC
Output Phases
1
Base Product Number
Voltage - Supply (Vcc/Vdd)
7.6V ~ 30V
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (37)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
SG2843DMMicrochip Technology0SG2843DM-ND$0.00000Upgrade
UC2843ADMMicrochip Technology0UC2843ADM-ND$0.00000Upgrade
MIC38HC43YMMicrochip Technology0576-3373-5-ND$1.90000Similar
MIC38HC43YM-TRMicrochip Technology0576-1169-2-ND$1.90000Similar
UC3843D8TRTexas Instruments10,000296-46260-2-ND$1.17000Direct
In-Stock: 0
2,500 estimated in stock on 04-Feb-2027
Request Stock Notification
Marketplace Stock: 208,500 View Now
All prices are in USD
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1$0.60000$0.60
10$0.42400$4.24
25$0.37960$9.49
100$0.33120$33.12
250$0.30800$77.00
500$0.29404$147.02
1,000$0.28255$282.55
* All Digi-Reel orders will add a $7.00 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
2,500$0.27042$676.05
5,000$0.26310$1,315.50
7,500$0.25944$1,945.80
12,500$0.25538$3,192.25
17,500$0.25301$4,427.68
25,000$0.25073$6,268.25
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.

Other Suppliers on DigiKey

208,500In Stock
Ships from Flip Electronics