AM51151C43N-A Equivalent & Substitute Parts

Part Overview

The AM51151C43N-A is a snap-action switch manufactured by Panasonic Electric Works, configured as a single-pole, single-throw normally-closed (SPST-NC) device with a straight lever actuator and chassis mount termination. This component is rated for 11A AC at 125V and 600mA DC at 125V, with quick connect 0.187" (4.7mm) terminals. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and legacy equipment support.

Substiute Parts

AM51151C43N-A

Panasonic Electric WorksIn Stock: 1079AM51151C43N-A Datasheet

Current PartRFQ

83264642

CrouzetIn Stock: 69883264642 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AM51151C43N-A is determined by the following critical parameters:

Circuit Configuration: SPST-NC topology is mandatory. The normally-closed contact arrangement is essential for applications requiring fail-safe operation or specific circuit logic.

Switch Function: On-Mom (momentary) operation must be preserved to maintain intended user interaction and circuit behavior.

Actuator Type & Mounting: Straight lever actuator with chassis mount termination ensures mechanical compatibility with existing panel cutouts and mounting hardware.

Termination Style: Quick connect 0.187" (4.7mm) terminals are required for direct connection compatibility with existing wiring harnesses and PCB connectors.

Electrical Ratings: Substitute parts must meet or exceed the AC current rating of 11A at 125V. DC ratings and voltage specifications should align with application requirements.

Operating Temperature Range: The substitute must support the operational environment of the original equipment.

The Crouzet 83264642 qualifies as a substitute based on matching circuit configuration (SPST-NC), switch function (On-Mom), actuator type (straight lever), mounting type (chassis mount), and termination style (quick connect 0.187"). The Crouzet part exceeds the original current rating (12A AC vs. 11A AC) and voltage rating (250V vs. 125V), providing enhanced electrical capacity for the same mechanical interface.

Parameter Comparison

Engineering Selection Recommendations

The Crouzet 83264642 is an active product with current manufacturing support, addressing the obsolescence status of the AM51151C43N-A. Both components share identical circuit topology, actuator configuration, and termination interface, ensuring direct mechanical and electrical compatibility within the specified parameter envelope.

The Crouzet substitute provides higher current capacity (12A vs. 11A) and voltage rating (250V vs. 125V), offering improved electrical margin for the same mechanical footprint. The extended upper operating temperature limit (-20°C to 125°C vs. -25°C to 105°C) accommodates broader thermal environments, though the lower temperature limit is 5°C higher than the original.

The Crouzet part exhibits lower mechanical life (1,000,000 cycles vs. 10,000,000 cycles), which should be evaluated against application duty cycle requirements. Both components maintain MSL 1 (Unlimited) moisture sensitivity classification and EAR99 export control status.

RoHS compliance and REACH unaffected status of the Crouzet part align with modern regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 83264642 directly replace the AM51151C43N-A in existing equipment?

A: Yes, within the specified electrical and mechanical parameters. Both components feature identical SPST-NC circuit configuration, straight lever actuator, chassis mount design, and 0.187" quick connect termination. Verify that the application voltage and current requirements do not exceed the Crouzet part's ratings.

Q: What is the significance of the different mechanical life ratings?

A: The AM51151C43N-A is rated for 10,000,000 mechanical cycles, while the Crouzet 83264642 is rated for 1,000,000 cycles. Applications requiring high-frequency actuation should evaluate whether the lower cycle rating of the substitute meets the intended duty cycle and service life expectations.

Q: Are there compliance differences between the two parts?

A: The Crouzet 83264642 is RoHS Compliant and REACH Unaffected. The AM51151C43N-A specifications do not include these compliance designations. For applications subject to RoHS or REACH requirements, the Crouzet part provides documented compliance.

Q: How do the operating temperature ranges compare?

A: The AM51151C43N-A operates from -25°C to 105°C, while the Crouzet 83264642 operates from -20°C to 125°C. The Crouzet part supports a higher maximum temperature but has a 5°C higher minimum temperature limit. Confirm that the application environment falls within the Crouzet operating range.

Q: Is the higher current and voltage rating of the Crouzet part a concern?

A: No. Higher electrical ratings provide additional safety margin and do not create compatibility issues when used in circuits designed for lower ratings. The 12A AC @ 250V capability of the Crouzet part exceeds the 11A AC @ 125V requirement of the original design.

Q: What should be verified before implementing the substitution?

A: Confirm that the application circuit voltage and current do not exceed the Crouzet part's ratings, verify mechanical life requirements align with application duty cycle, and ensure the operating temperature range accommodates the equipment environment. Panel cutout dimensions and mounting hardware compatibility should be confirmed as identical.