C&K 7105MD9A2LE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7105MD9A2LE is a toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 5A at 120V AC and 28V DC. This through-hole, right-angle mounted switch features a momentary-off-momentary (Mom-Off-Mom) function with epoxy sealed terminals and brass chrome-plated actuator. The 7105MD9A2LE is classified as obsolete, necessitating identification of active equivalent parts for continued design support and procurement.

Substiute Parts

7105MD9A2LE

C&KIn Stock: 7957105MD9A2LE Datasheet

Current PartRFQ

7105MD9A2RE

C&KIn Stock: 12427105MD9A2RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7105MD9A2LE is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPDT)
• Current and voltage ratings (5A AC/DC, 120V AC, 28V DC)
• Switch function (Mom-Off-Mom)
• Mounting type and orientation (Through Hole, Right Angle)
• Actuator specifications (Standard Round, 6.86mm length)
• Termination style (PC Pin)
• Operating temperature range (-30°C ~ 85°C)
• Electrical life (40,000 Cycles)

The 7105MD9A2RE meets all these criteria and belongs to the same 7000 series base product family, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The C&K 7105MD9A2RE is the direct substitute for the obsolete 7105MD9A2LE. Both parts maintain identical electrical and mechanical specifications across all critical parameters. The 7105MD9A2RE carries active product status, ensuring ongoing availability and supply chain continuity. Both parts meet RoHS compliance requirements and share equivalent moisture sensitivity and export classification ratings. The 7105MD9A2RE is suitable for direct replacement in existing designs without circuit or mechanical modifications.

Frequently Asked Questions (FAQ)

Q: Can the 7105MD9A2RE be used as a direct replacement for the 7105MD9A2LE?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including circuit configuration, current/voltage ratings, mounting type, actuator dimensions, and operating temperature range. No design changes are required.

Q: What is the primary difference between these two parts?

A: The 7105MD9A2LE is obsolete, while the 7105MD9A2RE is active. The 7105MD9A2RE offers continued procurement availability and supply chain support.

Q: Are there any compliance differences between the two parts?

A: Both parts meet RoHS compliance and share identical moisture sensitivity levels (MSL 1), ECCN (EAR99), and HTSUS classifications. The 7105MD9A2RE carries RoHS Compliant status while the 7105MD9A2LE carries ROHS3 Compliant status, both meeting current regulatory requirements.

Q: Will the 7105MD9A2RE fit existing PCB layouts designed for the 7105MD9A2LE?

A: Yes. Both parts feature identical through-hole, right-angle mounting with PC pin termination and matching actuator dimensions (6.86mm standard round). No PCB modifications are necessary.

Q: Are the electrical ratings identical?

A: Yes. Both parts are rated for 5A at 120V AC and 28V DC with identical Mom-Off-Mom switch function, 40,000 cycle electrical life, and -30°C to 85°C operating temperature range.