Honeywell 634SS2 Hall Effect Sensor Equivalent & Substitute Parts

Part Overview

The Honeywell 634SS2 is a Hall Effect analog magnetic sensor designed for single-axis magnetic field detection. This component operates as a through-hole mounted 4-DIP module and delivers analog voltage output proportional to magnetic flux density. The 634SS2 is classified as obsolete, making identification of functionally equivalent active alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain compatibility with the original electrical specifications and mounting requirements while offering active product status and sustained supply availability.

Substiute Parts

634SS2

Honeywell Sensing and Productivity SolutionsIn Stock: 979634SS2 Datasheet

Current PartRFQ

SS49E

Honeywell Sensing and Productivity SolutionsIn Stock: 589951SS49E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 634SS2 is determined by the following critical parameters:

Technology Match: Both the main part and substitute must employ Hall Effect sensing technology for single-axis magnetic field detection with analog voltage output.

Electrical Compatibility: Supply voltage range, maximum supply current, and output current specifications must be evaluated. The 634SS2 operates at 4V ~ 10V with 3.5mA maximum supply current. Substitute parts must support these electrical requirements or operate within overlapping voltage ranges that permit direct circuit integration.

Sensing Range: The 634SS2 provides ±40mT sensing range. Substitute parts with equal or greater sensing range capability maintain functional equivalence for magnetic field detection applications.

Mounting and Packaging: Through-hole mounting is required. Package form factors must be mechanically compatible with PCB layouts designed for the original 4-DIP module configuration.

Compliance and Status: Active product status ensures sustained availability. RoHS compliance and MSL ratings must match or exceed the original specification to maintain regulatory and environmental standards.

Parameter Comparison

Engineering Selection Recommendations

SS49E as Primary Substitute:

The Honeywell SS49E Hall Effect sensor qualifies as the primary substitute for the obsolete 634SS2 based on the following engineering criteria:

Technology and Function: Both components employ identical Hall Effect sensing technology with single-axis configuration and analog voltage output, ensuring functional equivalence for magnetic field detection applications.

Electrical Parameters: The SS49E operates within a 2.7V ~ 6.5V supply voltage range, which overlaps the 634SS2 specification at 4V ~ 6.5V. Circuit designs operating within this overlapping range permit direct substitution without power supply modification. The SS49E maximum supply current of 10mA exceeds the 634SS2 specification of 3.5mA; power budget analysis is required to confirm adequate current delivery capacity in the target application.

Product Status and Compliance: The SS49E maintains active product status with sustained manufacturing and supply availability, eliminating obsolescence risk. Both components carry RoHS compliance certification and identical MSL ratings, ensuring regulatory and environmental standard continuity.

Mechanical Considerations: The SS49E is packaged in TO-226-3 or TO-92-3 Short Body form factors, differing from the 634SS2 4-DIP module package. PCB layout modification is necessary to accommodate the radial lead configuration. Pin-to-pin electrical function must be verified against the specific application schematic before implementation.

Sensing Range: The 634SS2 sensing range of ±40mT is not specified for the SS49E in the provided data. Application-specific magnetic field strength requirements must be confirmed against SS49E detailed specifications before final selection.

Frequently Asked Questions (FAQ)

Q: Can the SS49E directly replace the 634SS2 without circuit modification?

A: Electrical substitution is possible within the overlapping supply voltage range of 4V ~ 6.5V. However, mechanical substitution requires PCB layout redesign due to different package types (4-DIP Module versus TO-226-3/TO-92-3 radial lead). Pin configuration and lead spacing differ, necessitating physical layout changes.

Q: What is the impact of the SS49E higher supply current specification?

A: The SS49E draws up to 10mA compared to the 634SS2 maximum of 3.5mA. Power supply circuits must deliver adequate current capacity. If the original design power budget was calculated for 3.5mA, the increased current draw of the SS49E may require power supply recalculation or component upgrade to prevent voltage regulation issues.

Q: Are there sensing range differences between the 634SS2 and SS49E?

A: The 634SS2 specifies ±40mT sensing range. The SS49E sensing range is not provided in the available technical parameters. Magnetic field strength requirements for the target application must be cross-referenced against complete SS49E datasheets to confirm adequate sensing capability.

Q: Do both components meet the same compliance standards?

A: Yes. Both the 634SS2 and SS49E are RoHS compliant with identical MSL ratings of 1 (Unlimited). Regulatory and environmental compliance requirements are maintained through substitution.

Q: What is the operating temperature range for the SS49E?

A: The SS49E operates across -40°C ~ 85°C (TA). The 634SS2 operating temperature range is not specified in the provided data. Application temperature requirements must be verified to confirm the SS49E meets thermal operating conditions.

Q: Why is the 634SS2 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and support. The SS49E, with active product status, ensures ongoing availability, technical support, and supply chain continuity for new designs and legacy system maintenance.