AM51666C63N-A Equivalent & Substitute Parts

Part Overview

The AM51666C63N-A is a snap-action switch manufactured by Panasonic Electric Works, configured as a single-pole single-throw normally open (SPST-NO) device with chassis mount termination. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

The switch is rated for 16A AC at 125V and 600mA DC at 125V, with lever and roller actuator options. Its mechanical design incorporates quick connect 0.187" (4.7mm) termination suitable for standard industrial control applications.

Substiute Parts

AM51666C63N-A

Panasonic Electric WorksIn Stock: 921AM51666C63N-A Datasheet

Current PartRFQ

TMCJG6SA1040Y

C&KIn Stock: 700TMCJG6SA1040Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AM51666C63N-A is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must remain SPST-NO
• Voltage rating must support 125V AC and 125V DC minimum
• Current rating must accommodate the application's maximum load (16A AC primary specification)
• Switch function must be Off-Momentary

Mechanical Compatibility Requirements:

• Mounting type must be Chassis Mount
• Termination style must be Quick Connect - 0.187" (4.7mm)
• Actuator type must be Lever or Roller configuration
• Physical dimensions must align with existing mounting interfaces

Environmental & Lifecycle Requirements:

• Operating temperature range must encompass -25°C to 105°C
• Moisture sensitivity level must be MSL 1 or equivalent
• Mechanical life must support industrial duty cycle expectations

The TMCJG6SA1040Y from C&K meets these substitution criteria with equivalent electrical and mechanical specifications, though with minor parameter variations within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

The TMCJG6SA1040Y is an active product from C&K and represents a direct functional substitute for the obsolete AM51666C63N-A. Selection should be based on the following factors:

Product Status Consideration: The AM51666C63N-A is obsolete with no ongoing manufacturing support. The TMCJG6SA1040Y is active and maintains current production status, ensuring long-term component availability and supply chain continuity.

Compliance & Certification: Both components share identical ECCN (EAR99) and HTSUS (8536.50.9040) classifications. The TMCJG6SA1040Y carries ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements.

Electrical Performance: The TMCJG6SA1040Y operates at 15A AC and 500mA DC, representing a 6% reduction in AC current rating and 17% reduction in DC current rating compared to the original. This substitution is appropriate for applications operating at or below these reduced ratings. Applications requiring the full 16A AC specification must be evaluated for load compatibility.

Mechanical & Environmental Advantages: The substitute offers extended operating temperature range (-55°C to 150°C versus -25°C to 105°C) and superior electrical life (150,000 cycles versus 100,000 cycles), providing enhanced reliability margins in demanding environments.

Frequently Asked Questions (FAQ)

Q: Can the TMCJG6SA1040Y directly replace the AM51666C63N-A in existing assemblies?

A: Yes, provided the application current requirement does not exceed 15A AC or 500mA DC. The identical mounting type, termination style, and circuit configuration ensure mechanical and electrical compatibility. Physical mounting interfaces and connector compatibility must be verified for the specific application.

Q: What is the significance of the current rating difference between these parts?

A: The AM51666C63N-A is rated for 16A AC, while the TMCJG6SA1040Y is rated for 15A AC. This 1A difference represents a 6% reduction in maximum continuous current capacity. Applications operating below 15A AC experience no functional impact. Applications requiring the full 16A specification must use alternative components or reduce system load.

Q: Are there packaging differences between these components?

A: The AM51666C63N-A is supplied in standard packaging, while the TMCJG6SA1040Y is supplied in bulk packaging. Both use identical quick connect 0.187" (4.7mm) termination and chassis mount configuration. Bulk packaging does not affect component functionality or electrical performance.

Q: How do the operating temperature ranges compare?

A: The AM51666C63N-A operates from -25°C to 105°C, while the TMCJG6SA1040Y operates from -55°C to 150°C. The substitute component provides a 30°C lower minimum temperature and 45°C higher maximum temperature, offering broader environmental compatibility for applications subject to extreme temperature conditions.

Q: What compliance certifications apply to the substitute component?

A: The TMCJG6SA1040Y is ROHS3 compliant and REACH unaffected. Both components share identical ECCN (EAR99) and HTSUS (8536.50.9040) classifications, ensuring regulatory alignment for export and procurement purposes.