AM50042C53-A Equivalent & Substitute Parts

Part Overview

The AM50042C53-A is a snap action SPDT switch manufactured by Panasonic Electric Works, designed for chassis mount applications with quick connect termination. This component is rated for 100mA at 125V AC and 30V DC, featuring a straight lever actuator with on-momentary switching function. The part is currently obsolete, making equivalent substitutes necessary for ongoing maintenance, repair, and new design applications requiring compatible SPDT switching functionality.

Substiute Parts

AM50042C53-A

Panasonic Electric WorksIn Stock: 937AM50042C53-A Datasheet

Current PartRFQ

LS0851502F120C1A

E-SwitchIn Stock: 1016LS0851502F120C1A Datasheet

SimilarRFQ

TFS10ST2040C

C&KIn Stock: 1266TFS10ST2040C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AM50042C53-A is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Circuit configuration: SPDT (Single Pole Double Throw)
• Switch function: On-Momentary operation
• Voltage rating: Minimum 125V AC compatibility
• Actuator type: Lever, straight configuration
• Mounting type: Chassis mount
• Termination style: Quick Connect - 0.187" (4.7mm)

Acceptable Parameter Variations:

• Current rating may exceed 100mA, provided the part maintains SPDT circuit and on-momentary function
• Operating force and release force may vary within mechanical design tolerances
• Operating position, pretravel, differential travel, and overtravel may differ within acceptable mechanical ranges
• Operating temperature range may be narrower or broader than the original specification
• Electrical and mechanical life ratings may differ based on manufacturer design

Two substitute parts meet these criteria: LS0851502F120C1A (E-Switch) and TFS10ST2040C (C&K). Both maintain SPDT circuit configuration, on-momentary function, 125V AC rating, straight lever actuator, chassis mount design, and 0.187" quick connect termination.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing support, addressing the obsolescence of the AM50042C53-A.

LS0851502F120C1A (E-Switch): This substitute provides higher current capacity (15A AC) while maintaining identical operating force (120gf) and release force (40gf) characteristics. The part is RoHS3 compliant and REACH unaffected. Operating temperature range is -25°C to 85°C, which is narrower than the original part. Electrical life is rated at 50,000 cycles, lower than the original 100,000 cycles.

TFS10ST2040C (C&K): This substitute provides 10A AC current capacity with lower operating force (90gf) and release force (10gf). The part includes IP40 ingress protection and is RoHS3 compliant and REACH unaffected. Operating temperature range extends to -40°C, providing broader low-temperature coverage. Mechanical life matches the original specification at 10,000,000 cycles.

Selection between these substitutes depends on application requirements for current capacity, operating force sensitivity, temperature range, and ingress protection needs.

Frequently Asked Questions (FAQ)

Q: Can LS0851502F120C1A replace AM50042C53-A in all applications?

A: LS0851502F120C1A maintains SPDT circuit configuration, on-momentary function, 125V AC rating, straight lever actuator, chassis mount design, and 0.187" quick connect termination. However, the operating temperature range is limited to -25°C to 85°C compared to the original -25°C to 105°C. Electrical life is 50,000 cycles versus the original 100,000 cycles. Applications requiring operation above 85°C or exceeding 50,000 electrical cycles require evaluation.

Q: Can TFS10ST2040C replace AM50042C53-A in all applications?

A: TFS10ST2040C maintains SPDT circuit configuration, on-momentary function, 125V AC rating, straight lever actuator, chassis mount design, and 0.187" quick connect termination. Operating force is 90gf versus the original 120gf, and release force is 10gf versus the original 20gf. Applications sensitive to actuation force characteristics require evaluation. Operating temperature range extends to -40°C, providing broader low-temperature capability.

Q: What are the key compatibility requirements for substitution?

A: Substitutes must maintain SPDT circuit configuration, on-momentary switching function, 125V AC voltage rating, straight lever actuator type, chassis mount design, and 0.187" quick connect termination. Current rating may exceed the original 100mA specification. Mechanical parameters including operating force, release force, and travel distances may vary within acceptable ranges.

Q: Are both substitutes RoHS and REACH compliant?

A: Both LS0851502F120C1A and TFS10ST2040C are RoHS3 compliant and REACH unaffected, meeting current environmental regulatory requirements.

Q: What is the difference in packaging between the substitutes?

A: LS0851502F120C1A is supplied in bulk packaging. TFS10ST2040C is supplied in box packaging. Packaging format does not affect electrical or mechanical compatibility.