Honeywell SS46 Magnetic Switch Latch - Equivalent & Substitute Parts

Part Overview

The Honeywell SS46 is a digital switch latch magnetic sensor utilizing Hall Effect technology with open collector output. This component is designed for applications requiring latching magnetic switching functionality with radial lead through-hole mounting. The SS46 operates across a wide supply voltage range of 4.5V to 24V and features temperature compensation for stable operation across -55°C to 150°C.

The SS46 has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems currently utilizing this component.

Substiute Parts

SS46

Honeywell Sensing and Productivity SolutionsIn Stock: 908SS46 Datasheet

Current PartRFQ

SS461R

Honeywell Sensing and Productivity SolutionsIn Stock: 23988SS461R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS46 magnetic switch latch is evaluated based on the following critical parameters that define functional equivalence:

Core Functional Parameters:

• Technology: Hall Effect digital switching
• Function: Latching operation
• Output Configuration: Open Collector topology
• Polarization: South Pole detection

Electrical Compatibility Parameters:

• Supply voltage range overlap with 4.5V to 24V requirement
• Output current capability of 20mA minimum
• Supply current within acceptable operational limits

Mechanical & Environmental Parameters:

• Through-hole mounting capability
• Operating temperature range compatibility
• RoHS compliance status

Sensing Performance Parameters:

• Trip and release threshold specifications
• Temperature compensation characteristics

The SS461R is identified as a substitute part manufactured by Honeywell Sensing and Productivity Solutions within the same magnetic sensor product family. Both components share identical core technology, output type, and functional classification.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SS46 is classified as obsolete, while the SS461R maintains active product status with current manufacturing and distribution. The SS461R is actively stocked with 23,896 pieces available, compared to 893 pieces of the obsolete SS46.

Compliance & Certification: Both the SS46 and SS461R carry RoHS Compliant certification and share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, ensuring regulatory equivalence for procurement and export purposes.

Electrical Parameter Alignment: The SS461R demonstrates superior electrical characteristics in specific parameters: extended lower supply voltage limit (3V versus 4.5V), reduced supply current draw (8mA versus 9mA), and identical maximum output current (20mA). These characteristics provide operational flexibility in applications with lower voltage constraints.

Temperature Range Consideration: The SS46 supports extended low-temperature operation to -55°C, while the SS461R operates from -40°C. Applications requiring operation below -40°C require retention of the SS46 or alternative components rated to -55°C.

Sensing Threshold Differences: The SS46 operates with trip/release thresholds of 3.75mT/-3.75mT, while the SS461R specifies 12mT/-12mT. These represent different magnetic field sensitivity levels. Application-specific magnetic field strength requirements determine whether threshold differences are acceptable.

Package & Mounting Compatibility: The SS46 utilizes 3-SIP radial lead packaging, while the SS461R employs TO-92-3 (TO-226-3 short body) configuration. Physical board layout, PCB footprint design, and mechanical mounting requirements must accommodate the different package geometries.

Frequently Asked Questions (FAQ)

Q: Can the SS461R directly replace the SS46 in existing circuit designs?

A: Direct replacement requires verification of three critical factors: (1) magnetic field strength in the application environment must align with the SS461R's 12mT trip threshold versus the SS46's 3.75mT threshold; (2) minimum operating temperature requirements must not exceed -40°C, as the SS461R does not support the SS46's -55°C lower limit; (3) PCB footprint and mechanical mounting must accommodate the TO-92-3 package geometry instead of the 3-SIP radial lead configuration.

Q: What are the key electrical differences between these components?

A: Both components share identical open collector output current capability (20mA) and maximum output voltage specifications. The SS461R provides a lower minimum supply voltage (3V versus 4.5V) and draws slightly less supply current (8mA versus 9mA). These differences represent improvements in power efficiency and voltage flexibility for the SS461R.

Q: How do the sensing thresholds differ between SS46 and SS461R?

A: The SS46 detects magnetic field changes at 3.75mT trip and -3.75mT release thresholds, providing higher sensitivity to weaker magnetic fields. The SS461R requires 12mT trip and -12mT release thresholds, representing a 3.2x reduction in sensitivity. Applications utilizing weak magnetic field sources may not function with the SS461R substitution.

Q: Are there temperature-related constraints for substitution?

A: Yes. The SS46 operates from -55°C to 150°C, while the SS461R operates from -40°C to 150°C. Applications requiring operation below -40°C cannot use the SS461R as a substitute. Both components support the full 150°C upper temperature limit.

Q: What packaging considerations apply to substitution?

A: The SS46 uses 3-SIP radial lead through-hole packaging, while the SS461R uses TO-92-3 (TO-226-3 short body) through-hole packaging. Both are through-hole mount types, but the physical lead spacing, diameter, and PCB hole positioning differ. PCB redesign or adapter solutions may be required for mechanical compatibility.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the SS46 and SS461R are RoHS Compliant and share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. Regulatory and export compliance requirements are equivalent between the two components.

Q: Which component should be selected for new designs?

A: The SS461R is the appropriate selection for new designs, as it maintains active product status with current manufacturing support and superior availability (23,896 pieces in stock). The SS46, being obsolete, should not be specified for new development unless specific application requirements (extended low-temperature operation to -55°C or 3.75mT sensitivity threshold) mandate its use.