A3283LLTTR Equivalent & Substitute Parts

Part Overview

The A3283LLTTR is a digital switch latch Hall Effect magnetic sensor manufactured by Allegro MicroSystems in SOT-89-3 surface mount packaging. This component functions as an open collector output magnetic switch with latch functionality, designed for applications requiring magnetic field detection and switching control. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

A3283LLTTR

Allegro MicroSystemsIn Stock: 839A3283LLTTR Datasheet

Current PartRFQ

SS561AT

Honeywell Sensing and Productivity SolutionsIn Stock: 3054SS561AT Datasheet

MFR RecommendedRFQ

SS566AT

Honeywell Sensing and Productivity SolutionsIn Stock: 5296SS566AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the A3283LLTTR are identified based on the following critical parameters that determine functional compatibility:

Core Compatibility Criteria:

• Function: Latch operation
• Technology: Hall Effect
• Polarization: South Pole
• Output Type: Open Collector
• Mounting Type: Surface Mount
• Package / Case: TO-243AA or compatible variant
• Operating Temperature Range: -40°C ~ 150°C

Electrical Parameter Ranges:

• Supply Voltage: Must accommodate 4.2V ~ 24V minimum range
• Sensing Range: Must match or provide equivalent magnetic field detection thresholds
• Output Current: Must support minimum 25mA output capability

The identified substitutes (SS561AT and SS566AT) maintain functional equivalence through matching latch function, Hall Effect technology, south pole polarization, open collector output, surface mount configuration, and compatible TO-243AA packaging. Both substitutes operate across the required -40°C ~ 150°C temperature range and support the necessary supply voltage and output current specifications.

Parameter Comparison

Engineering Selection Recommendations

SS566AT provides the closest functional match to the A3283LLTTR. This component maintains identical sensing range specifications (18mT Trip, -18mT Release), ensuring equivalent magnetic field detection performance. SS566AT is manufactured by Honeywell Sensing and Productivity Solutions with active product status, providing long-term availability and supply chain stability. The component is RoHS compliant, meeting modern environmental and regulatory requirements that the obsolete A3283LLTTR does not satisfy.

SS561AT serves as an alternative substitute when lower magnetic field sensitivity is acceptable for the application. This component features a lower sensing range (8.5mT Trip, -8.5mT Release) compared to the A3283LLTTR, requiring magnetic field detection at reduced thresholds. SS561AT is also active and RoHS compliant, with identical temperature range and compatible packaging.

Both substitutes exceed the original component specifications in supply voltage range (3.8V ~ 30V versus 4.2V ~ 24V) and output current capability (50mA versus 25mA), providing enhanced operational flexibility. Both components include temperature compensation features and maintain surface mount SOT-89B packaging compatible with TO-243AA footprints.

Frequently Asked Questions (FAQ)

Q: Can SS561AT and SS566AT be used interchangeably with the A3283LLTTR?

A: Both components are functionally compatible as direct substitutes. The primary difference is sensing range: SS566AT matches the original 18mT specification, while SS561AT operates at 8.5mT. Selection depends on the magnetic field strength requirements of your application.

Q: What is the difference between SS561AT and SS566AT?

A: Both components are Hall Effect latch sensors with open collector output, surface mount packaging, and identical temperature ranges. The key distinction is sensing range: SS561AT triggers at 8.5mT, while SS566AT triggers at 18mT. Supply voltage and output current specifications are identical between the two models.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both SS561AT and SS566AT are RoHS compliant. The original A3283LLTTR is RoHS non-compliant. If RoHS compliance is required for your application, either substitute component satisfies this requirement.

Q: Will the substitutes work with my existing PCB layout?

A: Both SS561AT and SS566AT use TO-243AA variant packaging, compatible with the original A3283LLTTR TO-243AA footprint. Verify pinout compatibility with your specific board design before implementation.

Q: What is the supply voltage range for the substitute parts?

A: Both SS561AT and SS566AT operate across 3.8V ~ 30V, which exceeds the original A3283LLTTR range of 4.2V ~ 24V. This provides broader voltage compatibility for your application.

Q: Can the substitute parts handle the same output current as the original?

A: Yes. Both substitutes provide 50mA maximum output current, exceeding the original 25mA specification. This ensures compatibility with existing load requirements and provides additional design margin.