C&K 7101MD9AV2LE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7101MD9AV2LE is a toggle switch with SPDT (Single Pole Double Throw) configuration rated for 5A at 120V AC and 28V DC. This through-hole, right-angle mounted switch features epoxy sealed terminals and a standard round actuator. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

7101MD9AV2LE

C&KIn Stock: 9387101MD9AV2LE Datasheet

Current PartRFQ

7101MD9AV2RE

C&KIn Stock: 8877101MD9AV2RE Datasheet

DirectRFQ

100SP1T2B2M7QE

E-SwitchIn Stock: 863100SP1T2B2M7QE Datasheet

SimilarRFQ

100SP1T2B2M7RE

E-SwitchIn Stock: 1000100SP1T2B2M7RE Datasheet

SimilarRFQ

100SP1T2B4M7QE

E-SwitchIn Stock: 3808100SP1T2B4M7QE Datasheet

SimilarRFQ

100SP1T2B4M7RE

E-SwitchIn Stock: 887100SP1T2B4M7RE Datasheet

SimilarRFQ

1825142-5

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11301825142-5 Datasheet

SimilarRFQ

A123P41D9AV2B

ElectroswitchIn Stock: 1182A123P41D9AV2B Datasheet

SimilarRFQ

WT123M1D9AV2B

ElectroswitchIn Stock: 754WT123M1D9AV2B Datasheet

SimilarRFQ

WT123M1D9AV2Q

ElectroswitchIn Stock: 1145WT123M1D9AV2Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Circuit configuration (SPDT required)
• Switch function (On-On required)
• Mounting type (Through Hole, Right Angle, Vertical required)
• Termination style (PC Pin required)
• Current and voltage ratings (must meet or exceed application requirements)
• Operating temperature range (must encompass -30°C to 85°C)
• Physical compatibility (actuator type and length affect panel integration)

Substitute parts are grouped into two categories:

Direct Equivalent: Parts with identical electrical ratings (5A at 120V AC / 28V DC) and mechanical specifications, differing only in product status or minor manufacturing variations.

Compatible Substitute: Parts with the same circuit configuration and mounting but with reduced electrical ratings (0.4VA at 20V or 0.5VA at 28V) or different actuator specifications. These require application verification to ensure adequate performance margin.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent:

The C&K 7101MD9AV2RE is the direct equivalent replacement for the obsolete 7101MD9AV2LE. Both parts share identical electrical ratings (5A at 120V AC / 28V DC), mechanical configuration, and operating temperature range. The 7101MD9AV2RE is currently in active production status with 840 units in stock. This part maintains the same 100,000-cycle electrical life specification and is ROHS3 compliant.

Secondary Recommendation - Electrical Rating Match:

The E-Switch 100SP1T2B4M7QE and 100SP1T2B2M7QE provide equivalent electrical performance (5A at 120V AC / 28V DC) with identical circuit configuration and mounting type. These parts are active production items with substantial inventory availability (3,727 and 764 units respectively). The primary design consideration is the reduced actuator length (5.08mm versus 6.86mm) and lower electrical life rating (40,000 cycles versus 100,000 cycles). Panel cutout compatibility must be verified before selection.

Alternative for Lower-Power Applications:

The Electroswitch WT123M1D9AV2Q provides higher current capacity (6A at 125V AC) with the same 28V DC rating and standard round actuator. This part is suitable for applications requiring increased AC current margin. The 7.60mm actuator length differs from the original specification.

Not Recommended for Direct Substitution:

Parts with reduced electrical ratings (0.4VA at 20V or 0.5VA at 28V) including the E-Switch 100SP1T2B4M7RE, 100SP1T2B2M7RE, TE Connectivity 1825142-5, and Electroswitch A123P41D9AV2B and WT123M1D9AV2B are not suitable for applications requiring the full 5A at 120V AC specification. These parts are listed as compatible alternatives only for applications with lower power requirements.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch 100SP1T2B4M7QE directly replace the C&K 7101MD9AV2LE?

A: The E-Switch 100SP1T2B4M7QE provides identical electrical ratings and circuit configuration. The primary difference is actuator length (5.08mm versus 6.86mm). Panel cutout dimensions and mounting depth must be verified for mechanical compatibility before substitution.

Q: What is the significance of the reduced electrical life rating in E-Switch parts?

A: The E-Switch 100SP1T2B4M7QE and 100SP1T2B2M7QE are rated for 40,000 cycles compared to the original 100,000 cycles. For applications with high cycle counts, the C&K 7101MD9AV2RE or Electroswitch WT123M1D9AV2Q are preferred to maintain the original reliability specification.

Q: Are the low-power rated parts (0.4VA and 0.5VA) suitable for my application?

A: Parts with reduced electrical ratings are only suitable if your application requires less than 0.5A at 28V DC or 0.4VA at 20V AC. If your design requires the full 5A at 120V AC specification, these parts will not provide adequate performance margin and should not be selected.

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

A: Actuator type (standard round versus flatted) and length affect panel integration and user interface feel. The A123P41D9AV2B features a flatted actuator (6.35mm), while most alternatives use standard round actuators ranging from 5.08mm to 7.62mm. Panel cutout compatibility and aesthetic requirements must be evaluated for each substitution.

Q: Does RoHS compliance differ between the main part and substitutes?

A: The C&K 7101MD9AV2LE and most E-Switch and TE Connectivity alternatives are ROHS3 compliant. The C&K 7101MD9AV2RE and Electroswitch parts carry RoHS compliance designations. Verify compliance requirements for your specific application and regulatory jurisdiction.

Q: What inventory considerations should guide my selection?

A: The C&K 7101MD9AV2RE (840 units), E-Switch 100SP1T2B4M7QE (3,727 units), and Electroswitch WT123M1D9AV2Q (1,084 units) offer the highest inventory availability. For long-term production requirements, the E-Switch option provides the largest stock position.