onsemi CAT24AA

CAT24AA variants from onsemi

Variants

Mfr

onsemi

Lifecycle

Active

CAT24AA 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.
2 distinct suffix patternsExamples: 01TDI-GT3, 02TDI-GT3. Decode suffix meaning in the ordering notes under the variant table.

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 CAT24AA 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
CAT24AA01TDI-GT3	EEPROM 1Kb I2C Serial TSOT-23 5.5V 1.7V 400kHz	onsemi	Active	Compliant	In Stock	RFQ
CAT24AA02TDI-GT3	2Kb EEPROM I2C Serial TSOT 5-Lead 1.7-5.5V 400kHz	onsemi	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on CAT24AA map to package, grade, and reel options.

How to Choose the Right CAT24AA 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 CAT24AA, 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 "CAT24AA" — include the full suffix (e.g. 01TDI-GT3, 02TDI-GT3). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for CAT24AA product family

Identity

Base Model

CAT24AA

Manufacturer

onsemi

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source CAT24AA 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 CAT24AA product family.

Is CAT24AA a single part I can order, or a family prefix?

CAT24AA is a base / family code from onsemi. You order a full MPN such as CAT24AA01TDI-GT3, CAT24AA02TDI-GT3. The variant table lists 2 orderable lines with different suffixes.

What do the suffix letters on CAT24AA part numbers mean?

Listed suffix fragments include: 01TDI-GT3, 02TDI-GT3. 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 CAT24AA 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 CAT24AA?

Full manufacturer MPN (not just CAT24AA), 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.