HAL546 SF-E Equivalent & Substitute Parts

Part Overview

The HAL546 SF-E is a digital switch Hall effect magnetic sensor manufactured by TDK-Micronas GmbH, designed for surface mount applications in the SOT-89B-1 package. This component operates as an open drain output device with temperature compensation, suitable for magnetic field detection across industrial temperature ranges. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

HAL546 SF-E

TDK-Micronas GmbHIn Stock: 1218HAL546 SF-E Datasheet

Current PartRFQ

HAL1503SU-A

TDK-Micronas GmbHIn Stock: 17437HAL1503SU-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The HAL1503SU-A qualifies as a functional substitute based on the following alignment of critical parameters:

Core Compatibility Criteria:

• Both components utilize Hall effect technology for magnetic field sensing
• Both feature open drain output configuration
• Both are surface mount devices manufactured by TDK-Micronas GmbH
• Both operate within overlapping supply voltage ranges (HAL1503SU-A: 2.7V ~ 24V encompasses the HAL546 SF-E range of 4.3V ~ 24V)
• Both are classified under the magnetic sensors category with identical HTSUS and ECCN codes

Functional Differences: The HAL1503SU-A operates as a unipolar switch with defined sensing parameters (5.5mT trip, 3.7mT release) and operates across a reduced temperature range (-40°C ~ 70°C). The HAL546 SF-E operates across an extended temperature range to 100°C. Package form factors differ: HAL1503SU-A uses SOT-23-3 versus HAL546 SF-E's SOT-89B-1.

Parameter Comparison

Engineering Selection Recommendations

Selection of HAL1503SU-A as a substitute for HAL546 SF-E requires evaluation of the following factors:

Temperature Range Consideration: The HAL546 SF-E operates to 100°C junction temperature, while HAL1503SU-A is rated to 70°C. Applications requiring operation above 70°C are not suitable for this substitution.

Package Footprint Redesign: The transition from SOT-89B-1 to SOT-23-3 packaging necessitates PCB layout modification. These packages have different pin configurations and physical dimensions, requiring circuit board redesign and component placement changes.

Supply Voltage Compatibility: The HAL1503SU-A supports operation at lower supply voltages (2.7V minimum) compared to HAL546 SF-E (4.3V minimum), providing additional design flexibility in low-voltage applications.

Product Status and Availability: HAL1503SU-A maintains active production status with 17,378 pieces in current inventory, ensuring long-term availability. HAL546 SF-E obsolescence status limits future procurement options.

Compliance Alignment: Both components share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. HAL1503SU-A carries ROHS3 compliance certification and MSL Level 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can HAL1503SU-A directly replace HAL546 SF-E without PCB modifications?

A: No. The components use different package types (SOT-23-3 versus SOT-89B-1), requiring PCB layout redesign and component footprint changes. Pin configurations differ between these packages.

Q: What is the maximum operating temperature for HAL1503SU-A?

A: HAL1503SU-A is rated for junction temperatures up to 70°C. Applications requiring sustained operation above this temperature are not compatible with this substitute.

Q: Are both components compatible with 24V supply systems?

A: Yes. Both HAL546 SF-E and HAL1503SU-A support 24V maximum supply voltage operation.

Q: What is the minimum supply voltage for each component?

A: HAL546 SF-E requires minimum 4.3V supply voltage. HAL1503SU-A operates at lower minimum voltage of 2.7V, providing broader supply voltage compatibility.

Q: Does HAL1503SU-A include temperature compensation?

A: Temperature compensation features are not specified in the HAL1503SU-A technical parameters provided. HAL546 SF-E explicitly includes temperature compensation.

Q: What is the sensing range specification for HAL1503SU-A?

A: HAL1503SU-A operates as a unipolar switch with 5.5mT trip threshold and 3.7mT release threshold. HAL546 SF-E sensing range is not specified in available parameters.

Q: Are both components RoHS compliant?

A: HAL1503SU-A carries ROHS3 compliance certification. RoHS status for HAL546 SF-E is not specified in available parameters.

Q: What is the moisture sensitivity level for HAL1503SU-A?

A: HAL1503SU-A is classified as MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.