Equivalent & Substitute Parts for Honeywell 1SX44-T Snap Action Switch

Part Overview

The Honeywell 1SX44-T is a snap action switch with Single Pole Double Throw (SPDT) circuit configuration, rated for 7A at 250V AC and 28V DC. This component features a round pin plunger actuator and chassis mount termination via solder turret. The 1SX44-T is classified as obsolete product status, necessitating identification of active equivalent alternatives to maintain supply chain continuity and support ongoing system maintenance and new production requirements.

Substiute Parts

1SX44-T

Honeywell Sensing and Productivity SolutionsIn Stock: 9171SX44-T Datasheet

Current PartRFQ

1SX74-T

Honeywell Sensing and Productivity SolutionsIn Stock: 7971SX74-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1SX74-T qualifies as a direct substitute for the 1SX44-T based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters (Must Match):

• Circuit configuration: SPDT
• Switch function: On-Mom
• Current rating: 7A (AC/DC)
• Voltage rating AC: 250V
• Voltage rating DC: 28V

Mechanical Parameters (Must Match):

• Actuator type: Round (Pin Plunger)
• Mounting type: Chassis Mount
• Termination style: Solder Turret
• Operating force: 141gf
• Release force: 28gf
• Operating position: 0.320" (8.13mm)
• Pretravel: 0.020" (0.5mm)

Environmental Parameters (Must Match):

• Operating temperature range: -55°C to 125°C
• RoHS compliance: Yes
• Moisture sensitivity level: 1 (Unlimited)

The 1SX74-T maintains identical electrical and mechanical specifications while offering active product status, ensuring continued availability and manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

The 1SX74-T is the direct equivalent substitute for the obsolete 1SX44-T. Selection of the 1SX74-T is based on the following engineering criteria:

Product Status Advantage: The 1SX74-T maintains active product status with Honeywell Sensing and Productivity Solutions, ensuring continued manufacturing support, availability, and compliance with current industry standards. The 1SX44-T is classified as obsolete, presenting supply chain risk for new production and long-term maintenance applications.

Compliance Alignment: Both components maintain identical RoHS compliance status and Moisture Sensitivity Level 1 rating. The 1SX74-T carries REACH Unaffected designation, confirming regulatory alignment with current European Union chemical regulations.

Electrical and Mechanical Equivalence: All critical electrical parameters (7A at 250V AC/28V DC, SPDT circuit, On-Mom function) and mechanical specifications (round pin plunger actuator, chassis mount, solder turret termination) are identical between the two components. The minor variance in overtravel specification (0.010" versus 0.007") remains within functional compatibility for snap action switch applications.

Export Classification: Both components share identical ECCN (EAR99) and HTSUS (8536.50.7000) classifications, confirming equivalent regulatory treatment for international commerce.

Frequently Asked Questions (FAQ)

Q: Can the 1SX74-T directly replace the 1SX44-T in existing designs?

A: Yes. The 1SX74-T is a direct functional equivalent with identical electrical ratings (7A at 250V AC/28V DC), circuit configuration (SPDT), actuator type (round pin plunger), mounting method (chassis mount), and termination style (solder turret). All critical mechanical parameters including operating force, release force, and operating position are identical.

Q: What is the primary reason for substitution?

A: The 1SX44-T is classified as obsolete product status. The 1SX74-T is an active product offering continued manufacturer support, guaranteed availability, and compliance with current industry standards.

Q: Are there packaging differences between these components?

A: The 1SX44-T is supplied in standard packaging, while the 1SX74-T is supplied in bulk packaging. Both configurations contain identical components with no functional differences.

Q: Do both components meet RoHS requirements?

A: Yes. Both the 1SX44-T and 1SX74-T are RoHS Compliant with Moisture Sensitivity Level 1 (Unlimited), confirming compliance with current environmental regulations.

Q: Is there a difference in operating temperature range?

A: No. Both components operate across the identical temperature range of -55°C to 125°C, ensuring equivalent thermal performance in all specified applications.

Q: What is the significance of the overtravel specification difference?

A: The 1SX74-T specifies 0.010" (0.25mm) overtravel compared to 0.007" (0.18mm) for the 1SX44-T. This minor increase remains within functional compatibility for snap action switch applications and does not affect electrical or mechanical performance in standard circuit implementations.

Q: Are export classifications identical?

A: Yes. Both components share identical ECCN (EAR99) and HTSUS (8536.50.7000) classifications, confirming equivalent regulatory treatment for international commerce and supply chain operations.