AM51143D43N-A Equivalent & Substitute Parts

Part Overview

The AM51143D43N-A is a snap action switch manufactured by Panasonic Electric Works, configured as a single-pole double-throw (SPDT) device with on-momentary function. This component is rated for 11A AC at 125V and features a lever-actuated, chassis-mounted design with quick connect termination. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and redesign applications where continued sourcing of the original part is unavailable.

Substiute Parts

AM51143D43N-A

Panasonic Electric WorksIn Stock: 979AM51143D43N-A Datasheet

Current PartRFQ

83264022

CrouzetIn Stock: 111783264022 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AM51143D43N-A is determined by the following critical parameters:

• Circuit Configuration: Must be SPDT to maintain identical switching logic
• Switch Function: Must be On-Momentary to preserve operational behavior
• Actuator Type: Must be lever-actuated with straight configuration for mechanical compatibility
• Mounting Type: Must be chassis mount to fit existing mechanical interfaces
• Termination Style: Must use quick connect 0.250" (6.3mm) terminals for electrical connection compatibility
• Voltage and Current Ratings: Substitute must meet or exceed the 11A AC / 125V AC specification to ensure safe operation in the original circuit

The Crouzet 83264022 satisfies all mandatory substitution criteria. It provides SPDT circuit configuration, on-momentary function, lever-straight actuation, chassis mounting, and quick connect 0.250" termination. The substitute exceeds the original part's current rating (12A AC) and voltage rating (250V AC), ensuring full electrical compatibility and operational margin.

Parameter Comparison

Engineering Selection Recommendations

The Crouzet 83264022 is a direct functional substitute for the AM51143D43N-A. Selection should be based on the following factors:

Electrical Compatibility: The Crouzet part exceeds the original specifications in both current capacity (12A vs. 11A AC) and voltage rating (250V vs. 125V AC), ensuring safe operation in circuits designed for the AM51143D43N-A.

Product Status: The Crouzet 83264022 is active in production, providing assured long-term availability compared to the obsolete Panasonic part.

Regulatory Compliance: The Crouzet substitute is RoHS compliant, meeting modern environmental and regulatory requirements. The original part's RoHS status is not specified.

Mechanical Life Consideration: The original part specifies 10,000,000 mechanical cycles versus the substitute's 1,000,000 cycles. Applications requiring extended mechanical life beyond 1,000,000 cycles should evaluate this difference against actual duty cycle requirements.

Temperature Range: The Crouzet part operates across -20°C to 125°C, compared to the original -25°C to 105°C. Applications operating below -20°C or above 125°C require evaluation of thermal performance margins.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 83264022 directly replace the AM51143D43N-A in existing assemblies?

A: Yes. Both parts share identical circuit configuration (SPDT), switch function (on-momentary), actuator type (lever-straight), mounting type (chassis mount), and termination style (quick connect 0.250"). The Crouzet part meets or exceeds all electrical ratings of the original.

Q: What are the key differences between these parts?

A: The primary differences are mechanical life rating (10,000,000 cycles for the original versus 1,000,000 cycles for the substitute), operating temperature range (-25°C to 105°C versus -20°C to 125°C), and product status (obsolete versus active). The Crouzet part provides higher voltage and current ratings.

Q: Are there any compatibility concerns with the quick connect termination?

A: No. Both parts use identical quick connect 0.250" (6.3mm) termination, ensuring direct mechanical and electrical compatibility with existing connector interfaces.

Q: Should mechanical life rating influence the substitution decision?

A: Mechanical life rating should be evaluated based on actual application duty cycle. If the application requires fewer than 1,000,000 mechanical cycles over the product lifetime, the Crouzet substitute is suitable. Applications with higher cycle requirements should assess whether the reduced rating presents a risk.

Q: Is the Crouzet part suitable for applications operating at the original -25°C minimum temperature?

A: The Crouzet part is rated to -20°C minimum. Applications requiring operation below -20°C should evaluate thermal performance margins or consider alternative solutions.