SS94B1A Hall Effect Sensor Equivalent & Substitute Parts

Part Overview

The SS94B1A is a Hall Effect analog magnetic sensor manufactured by Honeywell Sensing and Control EMEA, designed for single-axis magnetic field detection with analog voltage output. This component operates across a supply voltage range of 4.5V to 12V with a sensing range of ±67mT and maximum supply current of 11mA. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

SS94B1A

Honeywell Sensing and Control EMEAIn Stock: 4642SS94B1A Datasheet

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SS494B

Honeywell Sensing and Productivity SolutionsIn Stock: 17198SS494B Datasheet

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SS94A2

Honeywell Sensing and Productivity SolutionsIn Stock: 1940SS94A2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SS94B1A is determined by the following critical parameters:

Primary Compatibility Criteria:

• Technology: Hall Effect (required match)
• Axis Configuration: Single (required match)
• Output Type: Analog Voltage (required match)
• Package Type: 3-SIP (required match)
• Mounting Type: Through Hole (required match)

Secondary Compatibility Criteria (allowable variance):

• Sensing Range: Must encompass or be compatible with ±67mT operational requirements
• Supply Voltage: Must overlap with 4.5V ~ 12V range
• Supply Current: Lower values acceptable; higher values require design verification
• Output Current: Lower values acceptable; higher values require design verification
• Operating Temperature: Must support -50°C ~ 150°C or subset thereof

Both identified substitute parts (SS494B and SS94A2) maintain the core technology, axis configuration, output type, and 3-SIP package format. Variations in sensing range, supply voltage specifications, and current ratings reflect design differences within the Hall Effect sensor family.

Parameter Comparison

Engineering Selection Recommendations

SS494B Substitution: The SS494B is an active product from Honeywell Sensing and Productivity Solutions with RoHS compliance and REACH unaffected status. This part maintains the 3-SIP through-hole package and single-axis Hall Effect analog output configuration. The sensing range of ±42mT is narrower than the SS94B1A (±67mT), and the supply voltage upper limit is reduced to 10.5V compared to 12V. Supply current is lower at 8.7mA maximum. Temperature compensated feature is included. Selection of SS494B requires verification that the reduced sensing range and voltage specifications align with application requirements.

SS94A2 Substitution: The SS94A2 is an active product from Honeywell Sensing and Productivity Solutions with RoHS compliance and REACH unaffected status. This part uses a ceramic SIP package variant while maintaining the 3-SIP form factor and through-hole mounting. The sensing range of ±50mT falls between the SS94B1A and SS494B. Supply voltage range is 6.6V ~ 12.6V, which overlaps the original specification but with a higher minimum threshold. Maximum supply current is significantly higher at 30mA. Operating temperature maximum is reduced to 125°C. Selection of SS94A2 requires verification that the higher supply current requirement and reduced upper temperature limit are compatible with the application.

Both substitute parts carry active product status, ensuring ongoing availability and support from Honeywell.

Frequently Asked Questions (FAQ)

Q: Can SS494B directly replace SS94B1A in all applications? A: SS494B maintains core compatibility in technology, output type, and package format. However, the reduced sensing range (±42mT vs. ±67mT) and lower supply voltage maximum (10.5V vs. 12V) require application-level verification. If the original design operates near the upper voltage limit or requires the full ±67mT sensing range, SS494B may not be suitable.

Q: What are the key differences between SS494B and SS94A2? A: Both are active Honeywell products in 3-SIP packages. SS494B offers a narrower sensing range (±42mT) with lower supply current (8.7mA) and temperature compensation. SS94A2 provides a mid-range sensing capability (±50mT) with higher supply current requirements (30mA) and uses ceramic SIP construction. SS494B operates to 150°C; SS94A2 is rated to 125°C maximum.

Q: Is the 3-SIP package format identical across all three parts? A: All three parts use 3-SIP through-hole mounting. SS94A2 specifies ceramic SIP construction, while SS94B1A and SS494B use standard SIP packaging. Physical footprint compatibility should be verified during layout review, though the 3-SIP designation indicates mechanical compatibility.

Q: What does "Temperature Compensated" mean for SS494B? A: Temperature compensation in Hall Effect sensors refers to internal circuitry that maintains consistent output across the operating temperature range. This feature reduces temperature-induced drift in the sensor output signal.

Q: Are all three parts RoHS compliant? A: Yes. SS94B1A, SS494B, and SS94A2 are all RoHS compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute part has the lowest power consumption? A: SS494B has the lowest maximum supply current at 8.7mA, compared to 11mA for SS94B1A and 30mA for SS94A2.