Equivalent & Substitute Parts: SS466A-S

Part Overview

The SS466A-S is a digital switch latch Hall Effect magnetic sensor manufactured by Honeywell Sensing and Productivity Solutions. This component operates as an open collector device with temperature compensation, designed for applications requiring magnetic field detection and switching functionality. The SS466A-S is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations. The latch function provides bistable operation, maintaining output state until a reverse magnetic field is applied.

Substiute Parts

SS466A-S

Honeywell Sensing and Productivity SolutionsIn Stock: 1194SS466A-S 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 compatibility for the SS466A-S is determined by the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Honeywell Sensing and Productivity Solutions
• Series: SS400
• Technology: Hall Effect
• Polarization: South Pole
• Output Type: Open Collector
• Voltage Supply Range: 3.8V to 30V
• Current Supply (Max): 10mA
• Current Output (Max): 20mA
• Operating Temperature: -40°C to 150°C
• Mounting Type: Surface Mount
• Package: 3-SMD, Gull Wing
• RoHS Compliance: Required

Variable Parameters Allowing Substitution:

• Function: Latch vs. Unipolar Switch (different operational modes)
• Sensing Range: Trip and release thresholds may differ
• Product Status: Active vs. Obsolete

The SS443A-S qualifies as a substitute based on matching all mandatory parameters while operating in unipolar switch mode rather than latch mode. This functional difference represents the primary distinction between these components.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The SS443A-S serves as the primary substitute for the obsolete SS466A-S. Both components share identical electrical specifications, supply voltage ranges, current ratings, and thermal operating windows. The SS443A-S maintains active product status with Honeywell, ensuring continued availability and manufacturing support.

Functional Consideration: The primary difference between these components is operational mode. The SS466A-S operates as a latch (bistable), requiring a reverse magnetic field to change state. The SS443A-S operates as a unipolar switch, changing state based on magnetic field presence above the trip threshold. Circuit design must accommodate this functional distinction.

Compliance Status: Both components are RoHS compliant with MSL rating 1 (unlimited moisture sensitivity level), suitable for standard manufacturing and storage conditions. ECCN classification EAR99 applies to both parts.

Inventory Consideration: The SS443A-S maintains higher inventory availability (2607 units) compared to the SS466A-S (1125 units), supporting procurement reliability for new designs and legacy system support.

Frequently Asked Questions (FAQ)

Q: Can the SS443A-S directly replace the SS466A-S in existing circuits?

A: Electrical and mechanical compatibility is confirmed. Pin configuration, package type, voltage supply range, and current ratings are identical. However, functional behavior differs: the SS466A-S is a latch requiring reverse magnetic field to reset, while the SS443A-S is a unipolar switch responding to field presence. Circuit logic must be evaluated to determine if this functional difference affects system operation.

Q: What is the difference between latch and unipolar switch functions?

A: A latch maintains its output state until a reverse magnetic field is applied (trip at 18mT, release at -18mT). A unipolar switch changes output state based on magnetic field presence above a single threshold (trip at 18mT, release at 7.5mT). Application requirements determine which function is appropriate.

Q: Are both components available in the same package?

A: Yes. Both the SS466A-S and SS443A-S use 3-SMD, Gull Wing surface mount packaging, enabling identical PCB footprints and assembly processes.

Q: Why is the SS466A-S classified as obsolete?

A: Product status reflects Honeywell's manufacturing and support decisions. The SS443A-S, as an active product in the same SS400 series, provides continued access to compatible Hall Effect magnetic sensor technology.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the SS466A-S and SS443A-S are RoHS compliant with MSL rating 1, meeting environmental and manufacturing standards for industrial and commercial applications.

Q: What temperature range do these components support?

A: Both components operate across -40°C to 150°C, supporting applications in automotive, industrial, and high-temperature environments with temperature compensation features.