A3283EUA-T Equivalent & Substitute Parts

Part Overview

The A3283EUA-T is a digital switch latch Hall Effect magnetic sensor manufactured by Allegro MicroSystems in a 3-SIP through-hole package. This component functions as an open collector magnetic switch with latch capability, designed for applications requiring latching magnetic field detection. The A3283EUA-T is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing production support.

Substiute Parts

A3283EUA-T

Allegro MicroSystemsIn Stock: 1107A3283EUA-T Datasheet

Current PartRFQ

A1223EUA-T

Allegro MicroSystemsIn Stock: 846A1223EUA-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The A1223EUA-T qualifies as a direct substitute for the A3283EUA-T based on the following alignment of critical parameters:

Matching Parameters:

• Hall Effect technology with South Pole polarization
• Identical sensing range: 18mT trip, -18mT release
• Identical operating temperature range: -40°C ~ 85°C
• Same mounting type: Through Hole
• Same package: 3-SSIP
• ROHS3 compliance maintained

Functional Equivalence: Both components provide latching magnetic switch functionality with identical magnetic detection thresholds and thermal operating windows. The 3-SSIP package ensures mechanical and electrical pin compatibility.

Key Difference: The A1223EUA-T features open drain output versus the A3283EUA-T open collector output. Both output types are functionally equivalent in typical circuit applications with appropriate pull-up resistor configuration.

Parameter Comparison

Engineering Selection Recommendations

The A1223EUA-T is the recommended substitute for the obsolete A3283EUA-T. Selection is based on:

Product Status: The A1223EUA-T maintains active production status with established supply chain availability, whereas the A3283EUA-T is obsolete.

Compliance & Qualification: The A1223EUA-T carries AEC-Q100 automotive qualification and maintains ROHS3 compliance, providing enhanced reliability documentation for regulated applications.

Electrical Compatibility: Both components operate within overlapping voltage supply ranges (3V ~ 24V for A1223EUA-T encompasses the 4.2V ~ 24V range of A3283EUA-T). Output type difference (open drain vs. open collector) requires circuit-level evaluation but does not prevent functional substitution with appropriate pull-up configuration.

Thermal & Magnetic Performance: Identical operating temperature range and magnetic sensing thresholds ensure functional equivalence in target applications.

Frequently Asked Questions (FAQ)

Q: Can the A1223EUA-T directly replace the A3283EUA-T without circuit modifications?

A: Pin-to-pin compatibility is maintained due to identical 3-SSIP packaging. However, the output type change from open collector to open drain requires verification of pull-up resistor configuration in the host circuit. Both output types function equivalently with appropriate external resistor sizing.

Q: What is the significance of the A1223EUA-T automotive qualification?

A: AEC-Q100 qualification indicates the component meets automotive industry reliability and testing standards. This provides additional quality assurance documentation suitable for automotive and regulated industrial applications.

Q: Are the magnetic sensing characteristics identical between these parts?

A: Yes. Both components feature identical South Pole polarization, 18mT trip threshold, and -18mT release threshold, ensuring equivalent magnetic field detection performance.

Q: What is the minimum supply voltage difference between these parts?

A: The A1223EUA-T operates from 3V minimum, while the A3283EUA-T requires 4.2V minimum. The A1223EUA-T provides broader low-voltage compatibility.

Q: Is the A1223EUA-T suitable for replacement in existing A3283EUA-T applications?

A: Yes, provided the host circuit accommodates open drain output configuration. The identical magnetic sensing range, temperature operating window, and package ensure functional substitution for latching magnetic switch applications.