Equivalent & Substitute Parts for SS30AT Magnetic Switch

Part Overview

The SS30AT is an active-status bipolar magnetic switch manufactured by Honeywell Sensing and Productivity Solutions. This Hall Effect sensor operates as a digital switch with open collector output in a surface mount SOT-23-3 package. The device functions as a bipolar switch, responding to both north and south pole magnetic fields within its specified sensing range. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements necessitate alternative component specifications within compatible electrical and mechanical parameters.

Substiute Parts

SS30AT

Honeywell Sensing and Productivity SolutionsIn Stock: 133144SS30AT Datasheet

Current PartRFQ

TLE4946KHTSA1

Infineon TechnologiesIn Stock: 56429TLE4946KHTSA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SS30AT is determined by the following critical parameters:

Package Compatibility: The substitute part must use SOT-23-3 package format (equivalent to TO-236-3 or SC-59) to ensure mechanical and electrical compatibility with existing PCB layouts and connector interfaces.

Output Configuration: Open collector output type is mandatory for functional equivalence, as this output stage directly interfaces with system logic and pull-up resistor networks.

Technology Platform: Hall Effect technology is the baseline requirement for magnetic field sensing capability.

Voltage Supply Range: The substitute must operate within or encompass the 4.5V to 24V supply range of the SS30AT to ensure compatibility with existing power distribution systems.

Temperature Operating Range: The substitute must support operation across the -40°C to 125°C range or provide extended range capability.

Electrical Ratings: Maximum output current of 20mA and maximum supply current specifications must be met or exceeded.

The TLE4946KHTSA1 from Infineon Technologies qualifies as a substitute based on these parameters: it shares the SOT-23-3 package format, open collector output, Hall Effect technology, overlapping voltage supply range (2.7V to 18V encompasses the 4.5V to 24V requirement within the 4.5V to 18V overlap), and extended operating temperature range (-40°C to 150°C).

Parameter Comparison

Engineering Selection Recommendations

Primary Part (SS30AT): Recommended for applications requiring bipolar switch functionality with standard operating temperature range (-40°C to 125°C). The device maintains active product status with established supply chain availability. RoHS compliance satisfies environmental regulatory requirements.

Substitute Part (TLE4946KHTSA1): Applicable when SS30AT availability is constrained. The TLE4946KHTSA1 provides extended operating temperature range (-40°C to 150°C) suitable for high-temperature applications. The device carries AEC-Q100 automotive qualification and ROHS3 compliance, indicating enhanced reliability standards. Supply voltage range operates within 2.7V to 18V; applications requiring operation above 18V must verify alternative sourcing. The latch function differs from the bipolar switch function of the SS30AT; functional behavior must be evaluated against specific application requirements.

Both parts share identical package format, open collector output configuration, and maximum output current rating, supporting direct PCB-level substitution where functional differences are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the TLE4946KHTSA1 directly replace the SS30AT on existing PCBs?

A: Physical and electrical compatibility exists at the package level. Both devices use SOT-23-3 package format with identical pin assignments for open collector output. However, functional differences exist: the SS30AT operates as a bipolar switch, while the TLE4946KHTSA1 operates as a latch. Application logic must accommodate this functional difference.

Q: What is the voltage supply overlap between these parts?

A: The SS30AT operates from 4.5V to 24V. The TLE4946KHTSA1 operates from 2.7V to 18V. The overlap range is 4.5V to 18V. Applications requiring supply voltages above 18V cannot use the TLE4946KHTSA1.

Q: Are there temperature rating differences?

A: Yes. The SS30AT operates from -40°C to 125°C. The TLE4946KHTSA1 extends to -40°C to 150°C. Applications requiring operation above 125°C benefit from the TLE4946KHTSA1's extended range.

Q: What does "bipolar switch" versus "latch" mean functionally?

A: The SS30AT bipolar switch responds independently to north and south pole magnetic fields at specified trip and release thresholds. The TLE4946KHTSA1 latch function maintains output state until a magnetic field of opposite polarity triggers a state change. Application requirements determine which function is appropriate.

Q: Are both parts RoHS compliant?

A: Yes. The SS30AT is RoHS Compliant. The TLE4946KHTSA1 is ROHS3 Compliant. Both meet environmental regulatory requirements for restricted substance elimination.

Q: What is the supply current difference?

A: The SS30AT draws maximum 10mA supply current. The TLE4946KHTSA1 draws maximum 6mA. The TLE4946KHTSA1 offers lower power consumption, beneficial for battery-powered applications.

Q: Do both parts have identical sensing range specifications?

A: No. The SS30AT specifies 17mT trip and -17mT release. The TLE4946KHTSA1 specifies 19mT trip and -19mT release. Magnetic field sensitivity differs between the parts; application-specific magnetic field strength requirements must be verified.