SS443A-R Equivalent & Substitute Parts

Part Overview

The SS443A-R is a unipolar Hall Effect magnetic switch manufactured by Honeywell Sensing and Productivity Solutions. This component functions as a digital switch with open collector output, designed for applications requiring magnetic field detection and switching control. The SS443A-R operates across a wide supply voltage range and features temperature compensation for stable performance across industrial temperature ranges.

The SS443A-R is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

SS443A-R

Honeywell Sensing and Productivity SolutionsIn Stock: 785SS443A-R Datasheet

Current PartRFQ

SS443A-S

Honeywell Sensing and Productivity SolutionsIn Stock: 2642SS443A-S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS443A-R is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• Technology: Hall Effect
• Function: Unipolar Switch
• Polarization: South Pole
• Output Type: Open Collector

Electrical Parameters:

• Voltage - Supply: 3.8V ~ 30V
• Current - Supply (Max): 10mA
• Current - Output (Max): 20mA
• Sensing Range: 18mT Trip, 7.5mT Release
• Operating Temperature: -40°C ~ 150°C (TA)

Physical Parameters:

• Mounting Type: Surface Mount
• Package / Case: 3-SMD, Gull Wing

Compliance Parameters:

• RoHS Status: RoHS Compliant
• ECCN: EAR99

The SS443A-S qualifies as a direct substitute based on complete alignment across all critical functional, electrical, physical, and compliance parameters. Both components belong to the SS400 series and share identical sensing characteristics, supply voltage ranges, output specifications, and operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

The SS443A-S is the appropriate substitute for the obsolete SS443A-R based on the following engineering criteria:

Product Status Alignment: The SS443A-R is classified as obsolete, creating supply chain risk for ongoing production and field support. The SS443A-S maintains active product status with Honeywell Sensing and Productivity Solutions, ensuring continued availability and manufacturer support.

Electrical and Functional Equivalence: Both components provide identical electrical performance across all specified parameters, including supply voltage range (3.8V ~ 30V), output current capability (20mA maximum), and sensing characteristics (18mT trip, 7.5mT release). The open collector output configuration and Hall Effect technology are preserved.

Compliance and Certification: Both components maintain RoHS compliance and identical ECCN classification (EAR99), ensuring regulatory continuity for applications subject to environmental and export control requirements.

Physical Compatibility: Both components utilize identical surface mount packaging (3-SMD, Gull Wing), enabling direct PCB layout compatibility without redesign.

Temperature Performance: Operating temperature range (-40°C ~ 150°C) and temperature compensation features are identical, supporting equivalent thermal performance across industrial applications.

Frequently Asked Questions (FAQ)

Q: Can the SS443A-S be used as a direct replacement for the SS443A-R in existing designs?

A: Yes. The SS443A-S provides complete electrical, functional, and physical equivalence to the SS443A-R. All critical parameters including supply voltage, output current, sensing range, operating temperature, and package configuration are identical. Direct substitution is supported without circuit modification.

Q: What is the primary reason for substituting the SS443A-R?

A: The SS443A-R is classified as an obsolete product. The SS443A-S is the active equivalent from the same manufacturer and series, ensuring long-term supply availability and manufacturer support for new production and field replacements.

Q: Are there any differences in packaging between these components?

A: Both components use identical 3-SMD, Gull Wing surface mount packaging. No PCB layout modifications are required when transitioning from SS443A-R to SS443A-S.

Q: Do both components have the same sensing characteristics?

A: Yes. Both the SS443A-R and SS443A-S operate with identical magnetic field sensing parameters: 18mT trip threshold and 7.5mT release threshold. South pole polarization is maintained in both components.

Q: Are there compliance or certification differences between these parts?

A: No. Both components are RoHS compliant and share identical ECCN classification (EAR99). Regulatory requirements for environmental and export control purposes are equivalent.

Q: What is the operating temperature range for both components?

A: Both components operate across -40°C to 150°C (TA) with temperature compensation features. Thermal performance is identical.

Q: Can the SS443A-S handle the same supply voltage as the SS443A-R?

A: Yes. Both components accept supply voltages from 3.8V to 30V. Maximum supply current is 10mA for both components.