C&K 7103SDAV2LE22 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7103SDAV2LE22 is a panel-mount toggle switch with SPDT (Single Pole Double Throw) configuration, rated for 5A at 120V AC and 28V DC. This component features a standard round actuator with vertical orientation and PC pin termination. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

7103SDAV2LE22

C&KIn Stock: 9537103SDAV2LE22 Datasheet

Current PartRFQ

7103SDAV2RE22

C&KIn Stock: 7347103SDAV2RE22 Datasheet

DirectRFQ

A121S1YAV2B

ElectroswitchIn Stock: 893A121S1YAV2B Datasheet

SimilarRFQ

A121S1YAV2Q

ElectroswitchIn Stock: 940A121S1YAV2Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7103SDAV2LE22 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration (SPDT)
• Mounting type (Panel Mount, Right Angle, Vertical)
• Termination style (PC Pin)
• Bushing thread specification (1/4-40)
• Panel cutout dimensions (Circular - 6.35mm Dia)

Electrical Performance Criteria:

• Current rating must meet or exceed 5A (AC/DC)
• Voltage ratings must support minimum 120V AC and 28V DC operation
• Switch function compatibility (On-Off-On or On-On configurations)

Mechanical Criteria:

• Actuator type (Standard Round)
• Actuator length tolerance (12.45mm reference)
• Actuator material (Brass, Chrome Plated)

Two substitute categories are identified:

Direct Manufacturer Substitute: C&K 7103SDAV2RE22 maintains identical mechanical and electrical specifications while offering active product status and improved compliance certifications.

Cross-Manufacturer Alternatives: Electroswitch A121S1YAV2B and A121S1YAV2Q provide SPDT panel-mount configurations with compatible mechanical interfaces. These parts operate within the required voltage and current parameters, though with variations in specific electrical ratings and switch function characteristics.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The C&K 7103SDAV2RE22 is the primary substitute. This part maintains identical electrical ratings (5A at 120V AC, 28V DC), mechanical configuration, and switch function (On-Off-On). The direct substitute offers active product status and RoHS compliance, eliminating obsolescence risk and regulatory concerns associated with the original 7103SDAV2LE22.

For Cross-Manufacturer Substitution: Electroswitch alternatives require application-specific evaluation:

The A121S1YAV2B operates at reduced current capacity (0.5VA) and AC voltage (28V), limiting its use to low-power applications. This part is suitable only where the original 5A/120V rating is not required.

The A121S1YAV2Q provides higher current capacity (6A) and AC voltage rating (125V), exceeding the original specifications. This part accommodates applications requiring enhanced electrical performance. The switch function differs (On-On versus On-Off-On), requiring functional compatibility assessment.

Both Electroswitch parts feature improved electrical life (60,000 cycles versus 40,000) and extended operating temperature range (-30°C to 90°C). Actuator length variation (10.41mm versus 12.45mm) may require mechanical clearance verification in panel-mount applications.

Frequently Asked Questions (FAQ)

Q: Can the 7103SDAV2RE22 be used as a direct drop-in replacement for the 7103SDAV2LE22?

A: Yes. The 7103SDAV2RE22 maintains identical electrical specifications (5A, 120V AC, 28V DC), circuit configuration (SPDT), switch function (On-Off-On), and mechanical parameters (panel mount, 1/4-40 bushing, PC pin termination). The primary differences are product status (active versus obsolete) and RoHS compliance.

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

A: The C&K 7103SDAV2RE22 preserves all original electrical and mechanical specifications. Electroswitch parts (A121S1YAV2B and A121S1YAV2Q) offer different electrical ratings and switch functions. A121S1YAV2B is rated for 0.5VA at 28V AC, suitable only for low-power circuits. A121S1YAV2Q is rated for 6A at 125V AC, exceeding original specifications. Both feature On-On switch function rather than On-Off-On.

Q: Does actuator length variation affect mechanical compatibility?

A: Electroswitch parts feature 10.41mm actuators versus the original 12.45mm length. Panel cutout dimensions remain compatible (Circular - 6.35mm Dia, 1/4-40 bushing thread). Actuator length differences may affect panel clearance, operator reach, or aesthetic alignment. Mechanical verification is required for applications with tight panel-mount tolerances.

Q: Are all substitute parts RoHS compliant?

A: The C&K 7103SDAV2RE22 and both Electroswitch parts (A121S1YAV2B and A121S1YAV2Q) are RoHS compliant. The original 7103SDAV2LE22 is RoHS non-compliant. For applications requiring RoHS compliance, any of the three substitutes are acceptable from a regulatory standpoint.

Q: Which substitute is recommended for new designs?

A: The C&K 7103SDAV2RE22 is the recommended substitute for new designs. It maintains complete electrical and mechanical compatibility with the original part while offering active product status and regulatory compliance. Electroswitch alternatives should be considered only when the original electrical specifications are not required or when enhanced performance (higher current/voltage ratings) is beneficial.

Q: What is the difference between On-Off-On and On-On switch functions?

A: On-Off-On function provides three stable positions: one contact engaged, center position (off), and alternate contact engaged. On-On function provides two stable positions with both contacts engaged in each position. Application circuits must accommodate the functional difference before substituting On-On parts for On-Off-On requirements.