Equivalent & Substitute Parts for 1TL149-3D Toggle Switch

Part Overview

The 1TL149-3D is a toggle switch manufactured by Honeywell Sensing and Productivity Solutions, classified as an SPDT (Single Pole Double Throw) panel mount switch rated for 15A at 125V AC. This component features a locking lever actuator with a 22.35mm length and screw terminal connections, designed for environment-sealed applications across an operating temperature range of -65°C to 71°C.

The 1TL149-3D carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this component.

Substiute Parts

1TL149-3D

Honeywell Sensing and Productivity SolutionsIn Stock: 9831TL149-3D Datasheet

Current PartRFQ

1TL141-3G

Honeywell Sensing and Productivity SolutionsIn Stock: 12061TL141-3G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1TL149-3D is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Current rating of 15A (AC) and voltage rating of 125V AC must be maintained without deviation.

Mechanical Configuration: Circuit type SPDT with On-On switch function, panel mount installation, locking lever actuator with 22.35mm length, and screw terminal termination are non-negotiable.

Physical Dimensions: Panel cutout diameter of 12.40mm (circular) and bushing thread specification of 15/32-32 must match exactly to ensure mechanical compatibility.

Environmental & Compliance Requirements: Environment sealed ingress protection, operating temperature range of -65°C to 71°C, RoHS compliance, and MSL rating of 1 (Unlimited) must be preserved.

Manufacturer Consistency: Parts must originate from Honeywell Sensing and Productivity Solutions within the TL series to maintain design integrity and supply chain standardization.

The 1TL141-3G qualifies as a direct substitute based on complete alignment with all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The 1TL141-3G is the direct substitute for the obsolete 1TL149-3D. Both components share identical electrical ratings, mechanical dimensions, and environmental specifications. The primary distinction is product status: the 1TL141-3G maintains active production status with Honeywell Sensing and Productivity Solutions, ensuring ongoing availability and supply chain continuity.

Both parts maintain RoHS compliance and carry identical moisture sensitivity ratings, satisfying regulatory and environmental requirements for modern applications. The 1TL141-3G is available in bulk packaging with confirmed inventory of 1185 pieces, supporting production requirements for new designs or component replacement programs.

Selection of the 1TL141-3G eliminates obsolescence risk while preserving complete functional and mechanical compatibility with existing circuit designs and panel installations.

Frequently Asked Questions (FAQ)

Q: Can the 1TL141-3G be used as a direct replacement for the 1TL149-3D in existing applications?

A: Yes. The 1TL141-3G is electrically and mechanically identical to the 1TL149-3D across all specified parameters, including current rating, voltage rating, actuator dimensions, panel cutout specifications, and termination style. No circuit modifications or mechanical adjustments are required.

Q: What is the primary reason for substituting the 1TL149-3D?

A: The 1TL149-3D carries an obsolete product status. The 1TL141-3G is the active equivalent, ensuring long-term supply availability and design continuity.

Q: Are there any differences in packaging between these parts?

A: The 1TL149-3D is supplied with standard packaging, while the 1TL141-3G is available in bulk packaging. This distinction does not affect component functionality or performance.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 1TL149-3D and 1TL141-3G are RoHS compliant with identical moisture sensitivity levels (MSL 1 - Unlimited), satisfying equivalent regulatory and environmental requirements.

Q: What are the critical parameters that must match for substitution?

A: Electrical specifications (15A AC, 125V AC), circuit configuration (SPDT On-On), mechanical dimensions (22.35mm actuator length, 12.40mm panel cutout diameter, 15/32-32 bushing thread), termination style (screw terminal), and environmental rating (environment sealed, -65°C to 71°C operating range) must all remain identical.