C&K 7101MD9A3LE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7101MD9A3LE is a through-hole, right-angle toggle switch with SPDT (Single Pole Double Throw) configuration rated for 5A at 120V AC and 28V DC. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 7101MD series from C&K provides a direct upgrade path, while Electroswitch A-series components offer functional alternatives with enhanced electrical ratings.

Substiute Parts

7101MD9A3LE

C&KIn Stock: 9387101MD9A3LE Datasheet

Current PartRFQ

7101MD9A3RE

C&KIn Stock: 8997101MD9A3RE Datasheet

DirectRFQ

A123M1D9AG

ElectroswitchIn Stock: 1012A123M1D9AG Datasheet

SimilarRFQ

A123M1D9AQ

ElectroswitchIn Stock: 1120A123M1D9AQ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 7101MD9A3LE is determined by the following critical parameters: SPDT circuit configuration, On-On switch function, through-hole right-angle mounting, PC pin termination, and compatibility with 5A minimum current and 120V AC / 28V DC voltage ratings.

Two substitution categories are identified:

Direct Equivalent (Same Manufacturer): The C&K 7101MD9A3RE maintains identical electrical specifications, mounting configuration, and mechanical dimensions while offering active product status and RoHS compliance.

Functional Alternatives (Different Manufacturer): The Electroswitch A123M1D9AG and A123M1D9AQ provide SPDT On-On functionality with enhanced current ratings (6A) and voltage ratings (125V AC), accommodating the original part's electrical requirements while offering superior performance margins and active product support.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The C&K 7101MD9A3RE is the primary substitute, offering identical electrical and mechanical specifications with the advantage of active product status and RoHS compliance. This part is recommended for applications requiring exact form-fit-function compatibility.

For Enhanced Performance: The Electroswitch A123M1D9AG and A123M1D9AQ provide higher current capacity (6A versus 5A) and voltage ratings (125V AC versus 120V AC), delivering improved safety margins. Both parts maintain SPDT On-On functionality and through-hole right-angle mounting. Selection between A123M1D9AG and A123M1D9AQ depends on packaging and inventory requirements, as both offer identical electrical specifications.

Applications requiring RoHS compliance should prioritize the C&K 7101MD9A3RE or Electroswitch alternatives, as the original 7101MD9A3LE is non-compliant.

Frequently Asked Questions (FAQ)

Q: Can the C&K 7101MD9A3RE directly replace the 7101MD9A3LE?

A: Yes. The 7101MD9A3RE maintains identical electrical ratings (5A, 120V AC, 28V DC), circuit configuration (SPDT On-On), mounting type (through-hole right-angle), and mechanical dimensions. The primary difference is active product status and RoHS compliance.

Q: What are the key differences between the C&K and Electroswitch alternatives?

A: The Electroswitch A123M1D9AG and A123M1D9AQ offer higher current (6A versus 5A) and AC voltage ratings (125V versus 120V), with extended operating temperature range (-30°C to 90°C versus -30°C to 85°C). However, they feature a shorter actuator length (5.08mm versus 6.86mm) and lower electrical life rating (60,000 versus 100,000 cycles). Both maintain SPDT On-On functionality and PC pin termination.

Q: Are the Electroswitch parts suitable for applications designed for the 7101MD9A3LE?

A: The Electroswitch A123M1D9AG and A123M1D9AQ are functionally compatible for applications within their electrical specifications. The shorter actuator length requires mechanical clearance verification. The higher current and voltage ratings provide design margin but do not affect compatibility with circuits rated for 5A at 120V AC.

Q: What is the impact of the different actuator lengths?

A: The 7101MD9A3LE and 7101MD9A3RE feature 6.86mm actuators, while the Electroswitch alternatives feature 5.08mm actuators. Panel cutout dimensions and actuator engagement depth must be evaluated for mechanical compatibility in existing designs.

Q: Which substitute is recommended for new designs?

A: For new designs, the C&K 7101MD9A3RE is recommended as the primary choice due to identical specifications and active product status. The Electroswitch alternatives are suitable if higher current capacity or voltage ratings provide design benefits.