A3282LUA-T Equivalent & Substitute Parts

Part Overview

The A3282LUA-T is a digital switch latch Hall Effect magnetic sensor manufactured by Allegro MicroSystems, housed in a 3-SIP through-hole package. This component functions as an open-drain magnetic switch with south pole polarization, designed for applications requiring latching behavior in response to magnetic field detection.

The A3282LUA-T is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance of systems utilizing this component.

Substiute Parts

A3282LUA-T

Allegro MicroSystemsIn Stock: 10496A3282LUA-T Datasheet

Current PartRFQ

A1222LUA-T

Allegro MicroSystemsIn Stock: 8263A1222LUA-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A3282LUA-T is determined by strict alignment of the following critical parameters:

• Function: Latch operation
• Technology: Hall Effect
• Polarization: South Pole
• Sensing Range: 15mT Trip, -15mT Release
• Output Type: Open Drain
• Operating Temperature Range: -40°C ~ 150°C
• Mounting Type: Through Hole
• Package / Case: 3-SSIP

The A1222LUA-T qualifies as a substitute based on matching all critical functional and electrical parameters. The substitute maintains identical sensing thresholds, output configuration, temperature range, and physical package specifications required for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The A1222LUA-T is the qualified substitute for the obsolete A3282LUA-T. The substitute part maintains active product status with Allegro MicroSystems, ensuring ongoing availability and support.

Key considerations for selection:

The A1222LUA-T operates across a lower minimum supply voltage (3V versus 3.6V), providing broader voltage compatibility. The substitute exhibits slightly higher supply current consumption (4mA maximum versus 4.6mA) and reduced maximum output current (25mA versus 60mA). These differences must be evaluated within the context of the specific application circuit design.

Both parts are ROHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory requirements. The A1222LUA-T carries AEC-Q100 automotive qualification, indicating enhanced reliability screening and traceability suitable for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the A1222LUA-T directly replace the A3282LUA-T in existing designs?

A: Direct replacement is possible when the application circuit accommodates the parameter differences. The substitute maintains identical sensing thresholds, output type, temperature range, and physical package. Circuit designs must account for the reduced maximum output current (25mA versus 60mA) and verify compatibility with the lower minimum supply voltage (3V versus 3.6V).

Q: What are the key electrical differences between these parts?

A: The A1222LUA-T operates at a lower minimum supply voltage (3V) compared to the A3282LUA-T (3.6V). Supply current consumption is slightly higher (4mA maximum versus 4.6mA). The maximum output current is reduced in the substitute (25mA versus 60mA). All other functional parameters, including sensing range and operating temperature, remain identical.

Q: Are both parts available in the same physical package?

A: Yes. Both the A3282LUA-T and A1222LUA-T are housed in the 3-SSIP through-hole package, enabling direct physical substitution on printed circuit boards without layout modifications.

Q: What is the significance of the A1222LUA-T's AEC-Q100 qualification?

A: AEC-Q100 qualification indicates the part has undergone automotive-grade reliability testing and screening. This certification provides enhanced traceability and reliability assurance, making the A1222LUA-T suitable for applications requiring higher reliability standards.

Q: Why is the A3282LUA-T classified as obsolete?

A: The A3282LUA-T is no longer in active production. The A1222LUA-T serves as the current production equivalent, offering the same functional performance with active manufacturer support and availability.