Allegro MicroSystems ACS72981LLRA

ACS72981LLRA variants from Allegro MicroSystems

ACS72981LLRA Datasheet

Variants

Mfr

Allegro MicroSystems

Lifecycle

Active

ACS72981LLRA Overview

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

Key Features

Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
2 distinct suffix patternsExamples: TR-050B5, TR-100B5. Decode suffix meaning in the ordering notes under the variant table.

Target Applications

Sensors — 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 ACS72981LLRA 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
ACS72981LLRATR-050B5	ACS72981LL 50A Analog Current Sensor IC	Allegro MicroSystems	Active	Compliant	In Stock	RFQ
ACS72981LLRATR-100B5	HIGH PRECISION LINEAR HALL EFFEC	Allegro MicroSystems	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on ACS72981LLRA map to package, grade, and reel options.

How to Choose the Right ACS72981LLRA Sensors

📦

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 ACS72981LLRA, 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 "ACS72981LLRA" — include the full suffix (e.g. TR-050B5, TR-100B5). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for ACS72981LLRA product family

Identity

Base Model

ACS72981LLRA

Manufacturer

Allegro MicroSystems

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source ACS72981LLRA with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 2 ordering variants from Allegro MicroSystems. 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 Allegro MicroSystems Browse all base models →

Frequently Asked Questions

Common technical questions about the ACS72981LLRA product family.

Is ACS72981LLRA a single part I can order, or a family prefix?

ACS72981LLRA is a base / family code from Allegro MicroSystems. You order a full MPN such as ACS72981LLRATR-050B5, ACS72981LLRATR-100B5. The variant table lists 2 orderable lines with different suffixes.

What do the suffix letters on ACS72981LLRA part numbers mean?

Listed suffix fragments include: TR-050B5, TR-100B5. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the Allegro MicroSystems datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of ACS72981LLRA 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 ACS72981LLRA?

Full manufacturer MPN (not just ACS72981LLRA), 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.

Where is the ACS72981LLRA datasheet?

Use the datasheet link in the page header. Cross-check electrical curves (SOA, saturation voltage, etc.) against your operating point — the table summarizes order codes, not every graph in the PDF.