C&K 7105SD9CLE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7105SD9CLE is a through-hole mounted toggle switch with SPDT (Single Pole Double Throw) circuit 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 production continuity. The switch features a momentary-off-momentary (Mom-Off-Mom) function with epoxy sealed terminals and operates across a temperature range of -30°C to 85°C.

Substiute Parts

7105SD9CLE

C&KIn Stock: 8657105SD9CLE Datasheet

Current PartRFQ

7105SD9CRE

C&KIn Stock: 10897105SD9CRE Datasheet

DirectRFQ

100SP4T1B2M2QE

E-SwitchIn Stock: 1044100SP4T1B2M2QE Datasheet

SimilarRFQ

34ASP41B2M2RT

Grayhill Inc.In Stock: 98434ASP41B2M2RT Datasheet

SimilarRFQ

34ASP43B4M2RT

Grayhill Inc.In Stock: 87734ASP43B4M2RT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

• Circuit Configuration: SPDT (required match)
• Switch Function: Mom-Off-Mom (required match)
• Mounting Type: Through Hole (required match)
• Termination Style: PC Pin (required match)
• Current Rating: 5A AC/DC (required match for direct substitution)
• Voltage Rating - AC: 120V (required match for direct substitution)
• Voltage Rating - DC: 28V (required match for direct substitution)
• Operating Temperature Range: -30°C to 85°C (required match)
• Electrical Life: 40,000 Cycles (required match)
• RoHS Status: ROHS3 Compliant (required match)

Substitute parts are categorized as follows:

Direct Manufacturer Substitute: Parts from C&K that maintain identical electrical and mechanical specifications with only packaging or product status differences.

Similar Manufacturer Substitutes: Parts from alternative manufacturers (E-Switch, Grayhill Inc.) that match core circuit and functional requirements but may have minor variations in non-critical parameters such as actuator length or base product number.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (Recommended for Obsolete Part Replacement)

The C&K 7105SD9CRE is the primary substitute for the obsolete 7105SD9CLE. Both parts share identical electrical ratings (5A at 120V AC / 28V DC), circuit configuration (SPDT Mom-Off-Mom), and mechanical specifications. The 7105SD9CRE is currently in active production status with 1014 units in stock, providing immediate availability. The only difference is packaging format (Bulk vs. standard). REACH status differs (Affected vs. Unaffected), which may impact supply chain considerations depending on application region.

Alternative Substitutes (Limited Electrical Ratings)

The E-Switch 100SP4T1B2M2QE and Grayhill Inc. parts (34ASP41B2M2RT and 34ASP43B4M2RT) maintain identical circuit configuration and switch function but operate at reduced current and voltage ratings (0.4VA at 20V AC/DC for Grayhill parts). These alternatives are suitable only for applications where the lower electrical ratings are acceptable. The E-Switch 100SP4T1B2M2QE maintains full 5A/120V ratings but features a shorter actuator length (10.41mm vs. 12.45mm), which may affect panel mounting clearance.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and the required operating temperature range, ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 7105SD9CRE directly replace the obsolete 7105SD9CLE?

A: Yes. The 7105SD9CRE is a direct substitute with identical electrical specifications (5A at 120V AC / 28V DC), circuit configuration (SPDT), switch function (Mom-Off-Mom), and mechanical mounting. The part is currently in active production with available inventory.

Q: What is the difference between the C&K 7105SD9CLE and 7105SD9CRE?

A: Both parts are electrically and mechanically identical. The primary differences are product status (Obsolete vs. Active) and packaging format. The 7105SD9CRE is the active production equivalent.

Q: Can I use the E-Switch 100SP4T1B2M2QE as a substitute?

A: The E-Switch 100SP4T1B2M2QE maintains the same circuit configuration (SPDT), switch function (Mom-Off-Mom), and full electrical ratings (5A at 120V AC / 28V DC). However, the actuator length differs (10.41mm vs. 12.45mm), which may affect panel mounting geometry. Mechanical fit must be verified before implementation.

Q: Why are the Grayhill parts listed as substitutes if they have lower electrical ratings?

A: The Grayhill 34ASP41B2M2RT and 34ASP43B4M2RT parts are listed as similar alternatives based on circuit configuration and switch function. However, their reduced current rating (0.4VA vs. 5A) and voltage rating (20V vs. 120V AC / 28V DC) restrict their use to applications with lower power requirements. These parts are not suitable for applications requiring the full 5A/120V specifications of the original part.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring regulatory compatibility with current environmental standards.

Q: What is the impact of REACH status differences?

A: The C&K 7105SD9CRE is listed as REACH Affected, while the original 7105SD9CLE is REACH Unaffected. REACH compliance status may affect supply chain logistics and regional availability depending on application location and regulatory requirements. Consult regional compliance documentation for specific requirements.

Q: Do all substitute parts support the same operating temperature range?

A: Yes. All substitute parts operate across the identical temperature range of -30°C to 85°C, ensuring thermal compatibility with the original specification.