onsemi UC3845BD

UC3845BD variants from onsemi

Variants

Mfr

onsemi

Lifecycle

Active

UC3845BD Overview

What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.

Key Features

Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.

Target Applications

Microcontrollers — design-in and field replacement
BOM scrub where only the base prefix is known but suffix is TBD
Second-source checks when the original MPN is constrained

Ordering Variants

Compare 2 UC3845BD part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part Number	Description	Manufacturer	Lifecycle	RoHS	Availability	Action
UC3845BD	Current Mode PWM Controller, 1A, 500kHz, 14-Pin SOIC N	onsemi	Active	Compliant	In Stock	RFQ
UC3845BD1R2G	PWM Controller, 1A, 500kHz, SOIC, Boost/Flyback	onsemi	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on UC3845BD map to package, grade, and reel options.

How to Choose the Right UC3845BD Microcontrollers

📦

Match the footprint first

Pull the exact package drawing for your MPN — base-number swaps fail most often at the footprint, not the schematic.

⚡

Electrical headroom

Compare voltage and current columns in the variant table. For UC3845BD, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.

🌡️

Temp grade letter matters

Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.

🔢

Copy the full MPN

Do not BOM only "UC3845BD" — include the full suffix (e.g. 1R2G). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for UC3845BD product family

Identity

Base Model

UC3845BD

Manufacturer

onsemi

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source UC3845BD with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 2 ordering variants from onsemi. Our team supports active, EOL, and hard-to-find component sourcing.

Original manufacturer parts with traceability options
BOM upload and multi-line RFQ support
Package, grade, and compliance verification

Request Quote View onsemi Browse all base models →

Frequently Asked Questions

Common technical questions about the UC3845BD product family.

Is UC3845BD a single part I can order, or a family prefix?

UC3845BD is a base / family code from onsemi. You order a full MPN such as UC3845BD, UC3845BD1R2G. The variant table lists 2 orderable lines with different suffixes.

What do the suffix letters on UC3845BD part numbers mean?

Listed suffix fragments include: 1R2G. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the onsemi datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of UC3845BD variants?

Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.

What should I send for an RFQ on UC3845BD?

Full manufacturer MPN (not just UC3845BD), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.