SS40G Magnetic Sensor - Equivalent & Substitute Parts

Part Overview

The SS40G is a bipolar Hall Effect magnetic switch manufactured by Honeywell Sensing and Productivity Solutions. This component functions as a digital switch with open collector output, designed for magnetic field detection applications requiring response to both north and south pole magnetization. The SS40G is classified as obsolete, making identification of active equivalent parts essential for ongoing design support, maintenance, and new procurement requirements.

Substiute Parts

SS40G

Honeywell Sensing and Productivity SolutionsIn Stock: 43321SS40G Datasheet

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SS40F

Honeywell Sensing and Productivity SolutionsIn Stock: 3651SS40F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SS40G is based on strict electrical and mechanical parameter alignment. The primary substitute, SS40F, maintains functional equivalence through identical specifications in the following critical areas:

Substitution Criteria:

• Hall Effect technology with bipolar switching function
• Identical sensing range (17mT trip, -17mT release)
• Matching supply voltage range (4.5V – 24V)
• Identical output type (Open Collector) and maximum output current (20mA)
• Identical operating temperature range (-40°C to 125°C)
• Identical package form factor (3-SIP Through Hole)
• Matching RoHS compliance and MSL rating

The SS40F differs from the SS40G only in product status (Active vs. Obsolete) and maximum supply current specification (10mA vs. 11.3mA). The reduced supply current in SS40F represents a tighter specification within the same functional envelope.

Parameter Comparison

Engineering Selection Recommendations

The SS40F is the direct active equivalent for the obsolete SS40G magnetic sensor. Selection of SS40F is supported by:

Compliance and Support:

• Active product status ensures ongoing manufacturer support and availability
• RoHS compliance maintained across both parts
• Identical MSL rating (1 – Unlimited) confirms equivalent moisture handling

Electrical Compatibility:

• All critical electrical parameters match between SS40G and SS40F
• Maximum supply current specification of SS40F (10mA) operates within the design envelope of applications originally specified for SS40G (11.3mA maximum)
• Open collector output configuration and 20mA maximum output current remain unchanged

Mechanical and Thermal Compatibility:

• Identical 3-SIP through-hole package ensures direct PCB footprint compatibility
• Operating temperature range (-40°C to 125°C) unchanged
• Sensing characteristics (17mT trip, -17mT release) identical for both north and south pole detection

For applications currently using SS40G, direct substitution with SS40F requires no circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can SS40F directly replace SS40G in existing designs?

A: Yes. The SS40F maintains identical electrical specifications, package form factor, and thermal operating range as the SS40G. Direct substitution is possible without circuit modification.

Q: What is the difference between SS40G and SS40F?

A: The primary differences are product status and maximum supply current specification. SS40G is obsolete with 11.3mA maximum supply current; SS40F is active with 10mA maximum supply current. All functional parameters, including sensing range, output type, and operating temperature, are identical.

Q: Does the lower supply current rating of SS40F affect circuit design?

A: No. The 10mA maximum supply current of SS40F is a tighter specification within the same functional range. Applications designed for SS40G will operate within SS40F specifications.

Q: Are there any package or pinout differences between SS40G and SS40F?

A: No. Both parts use the 3-SIP through-hole package with identical pinout and footprint compatibility.

Q: Is SS40F RoHS compliant?

A: Yes. SS40F maintains RoHS compliance status identical to SS40G.

Q: What is the sensing range for both parts?

A: Both SS40G and SS40F detect magnetic fields at 17mT trip threshold and release at -17mT, with response to both north and south pole magnetization.

Q: Can SS40F be used in temperature-critical applications?

A: Yes. SS40F operates across the full -40°C to 125°C temperature range, matching SS40G specifications.