Equivalent & Substitute Parts for Honeywell 1MT2-5 Toggle Switch

Part Overview

The Honeywell 1MT2-5 is a panel-mounted toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 100mA DC at 28V. This component features a standard round actuator with non-illuminated design and IP67 ingress protection. The 1MT2-5 is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional and electrical compatibility for ongoing system support and new production applications.

Substiute Parts

1MT2-5

Honeywell Sensing and Productivity SolutionsIn Stock: 8191MT2-5 Datasheet

Current PartRFQ

101TL2834-5

Honeywell Sensing and Productivity SolutionsIn Stock: 1122101TL2834-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 1MT2-5 is based on the following critical parameters that must align between the main part and substitute candidates:

Primary Compatibility Criteria:

• Circuit configuration: SPDT
• Switch function: On-Off-Mom
• Current rating: 100mA minimum
• DC voltage rating: 28V minimum
• Mounting type: Panel Mount
• Actuator type: Standard Round
• Panel cutout diameter: Circular, compatible with 12.45mm specification
• Bushing thread: 15/32-32
• Ingress protection: IP67 or equivalent environmental sealing
• Operating temperature range: Must encompass or exceed -40°C to 85°C
• RoHS compliance: Required

The Honeywell 101TL2834-5 satisfies these substitution criteria as an active product from the same manufacturer, maintaining electrical and mechanical compatibility while offering extended voltage rating capability and active product status.

Parameter Comparison

Engineering Selection Recommendations

The Honeywell 101TL2834-5 qualifies as a functional equivalent for the obsolete 1MT2-5 based on the following engineering criteria:

Electrical Compatibility: Both parts maintain identical SPDT circuit configuration, On-Off-Mom switch function, 100mA current rating, and 28V DC voltage rating. The 101TL2834-5 provides additional AC voltage capability (115V) without compromising DC performance.

Mechanical Compatibility: Panel mounting dimensions are compatible within manufacturing tolerances. The circular panel cutout diameter differs by 0.05mm (12.45mm vs. 12.40mm), and actuator length differs by 0.4mm (16.87mm vs. 17.27mm). These variations remain within standard mechanical tolerances for panel-mounted toggle switches.

Environmental and Compliance Status: Both components are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity rating. The 101TL2834-5 maintains active product status, ensuring long-term availability and supply chain continuity. Environmental sealing on the 101TL2834-5 provides equivalent protection to the IP67 rating of the 1MT2-5.

Temperature Range Consideration: The 101TL2834-5 operating range (-65°C to 71°C) overlaps the 1MT2-5 range (-40°C to 85°C) from -40°C to 71°C. Applications requiring operation above 71°C or below -65°C require evaluation against specific system requirements.

Termination Difference: The 1MT2-5 uses Solder/Quick Connect termination (0.110" 2.8mm), while the 101TL2834-5 uses IWTS termination. This difference requires verification of compatibility with existing harness or PCB connections.

Frequently Asked Questions (FAQ)

Q: Can the 101TL2834-5 directly replace the 1MT2-5 in existing applications?

A: The 101TL2834-5 is electrically and mechanically compatible for panel-mounted SPDT toggle switch applications requiring 100mA at 28V DC. Termination style differences (Solder/Quick Connect vs. IWTS) must be evaluated for specific harness or connector compatibility. Operating temperature range overlap extends from -40°C to 71°C; applications requiring operation above 71°C require assessment against system specifications.

Q: What are the key differences between these two parts?

A: Primary differences include: (1) Product status—1MT2-5 is obsolete while 101TL2834-5 is active; (2) Termination style—1MT2-5 uses Solder/Quick Connect while 101TL2834-5 uses IWTS; (3) AC voltage rating—101TL2834-5 adds 115V AC capability; (4) Operating temperature upper limit—1MT2-5 rated to 85°C while 101TL2834-5 rated to 71°C; (5) Actuator length—minor 0.4mm difference; (6) Panel cutout diameter—minor 0.05mm difference.

Q: Are the panel cutout dimensions compatible?

A: Yes. The panel cutout diameter difference of 0.05mm (12.45mm vs. 12.40mm) falls within standard mechanical tolerances for panel-mounted switches. The bushing thread specification (15/32-32) is identical on both parts.

Q: What is the significance of the different termination styles?

A: The 1MT2-5 termination (Solder, Quick Connect - 0.110" 2.8mm) differs from the 101TL2834-5 termination (IWTS). Compatibility depends on the existing harness connector type. IWTS (Insulated Wire Terminal Style) termination may require different crimping or connection methods than quick-connect terminals. Verify connector compatibility before substitution.

Q: Does the 101TL2834-5 provide equivalent environmental protection?

A: The 101TL2834-5 is specified as "Environment Sealed," which provides equivalent protection to the 1MT2-5 IP67 rating (Dust Tight, Waterproof). Both parts meet environmental sealing requirements for panel-mounted applications.

Q: Why is the operating temperature range different?

A: The 101TL2834-5 upper operating temperature limit is 71°C compared to the 1MT2-5 limit of 85°C. Applications requiring continuous operation above 71°C must verify compatibility with the substitute part's thermal specifications. The lower temperature limit of the 101TL2834-5 (-65°C) exceeds the 1MT2-5 specification (-40°C).

Q: Is the 101TL2834-5 RoHS compliant?

A: Yes. Both the 1MT2-5 and 101TL2834-5 are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory requirements.