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

Part Overview

The C&K 7103MPYCKE is a panel-mount toggle switch with SPDT (Single Pole Double Throw) configuration, rated for 0.4VA at 20V AC/DC. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The switch features anti-rotation actuator design, epoxy sealed terminals, and operates across -30°C to 85°C temperature range with 40,000 electrical life cycles.

Substiute Parts

7103MPYCKE

C&KIn Stock: 8887103MPYCKE Datasheet

Current PartRFQ

7103MPYCPE

C&KIn Stock: 6587103MPYCPE Datasheet

DirectRFQ

100SP3T1B1M2REH

E-SwitchIn Stock: 1220100SP3T1B1M2REH Datasheet

SimilarRFQ

100SP3T1B1M3QEH

E-SwitchIn Stock: 719100SP3T1B1M3QEH Datasheet

SimilarRFQ

34ASP32B3M2QT

Grayhill Inc.In Stock: 117434ASP32B3M2QT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Primary Compatibility Criteria:

• Circuit configuration (SPDT)
• Switch function (On-Off-On)
• Mounting type (Panel Mount)
• Panel cutout dimensions (Circular - 6.35mm Dia)
• Bushing thread (1/4-40)
• Operating temperature range (-30°C to 85°C)
• Electrical life (40,000 Cycles)

Electrical Rating Considerations:

• Current and voltage ratings must meet or exceed the original specification (0.4VA at 20V AC/DC)
• Termination style compatibility with PC Pin standard

Compliance Requirements:

• RoHS3 compliance status
• MSL rating of 1 (Unlimited)

The substitute parts listed below satisfy these criteria with variations noted in actuator design and electrical ratings where applicable.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent - C&K 7103MPYCPE: The 7103MPYCPE is the primary direct substitute for the obsolete 7103MPYCKE. Both parts share identical electrical ratings (0.4VA at 20V AC/DC), mechanical dimensions, and actuator specifications. The 7103MPYCPE maintains active product status and ROHS3 compliance. This part is recommended for applications requiring exact electrical and mechanical compatibility with minimal design modification.

Higher-Rated Alternatives - E-Switch 100SP3T1B1M2REH: The 100SP3T1B1M2REH provides equivalent electrical performance at the original 0.4VA/20V rating with identical panel mounting and cutout specifications. The primary difference is the standard round actuator (10.41mm length) versus the anti-rotation design of the original. This part is suitable for applications where actuator style does not impact mechanical design constraints. ROHS3 compliance and active product status are maintained.

Higher-Capacity Alternatives - E-Switch 100SP3T1B1M3QEH and Grayhill 34ASP32B3M2QT: These parts provide significantly elevated electrical ratings (5A at 120V/125V AC) while maintaining SPDT configuration and panel mount compatibility. The 100SP3T1B1M3QEH uses quick-connect termination (0.062" 1.5mm) rather than PC Pin, requiring circuit board modification. The 34ASP32B3M2QT retains PC Pin termination with 6.86mm actuator length. Both parts are suitable for applications requiring higher current and voltage capacity than the original specification. Selection between these options depends on termination compatibility and actuator length requirements.

Frequently Asked Questions (FAQ)

Q: Can the 7103MPYCPE directly replace the obsolete 7103MPYCKE without any modifications? A: Yes. The 7103MPYCPE is mechanically and electrically identical to the 7103MPYCKE, with matching panel cutout dimensions (6.35mm circular), bushing thread (1/4-40), electrical ratings (0.4VA at 20V AC/DC), and PC Pin termination. No circuit board or mechanical modifications are required.

Q: What is the primary difference between the C&K 7103MPYCPE and E-Switch 100SP3T1B1M2REH? A: Both parts meet the original electrical specification (0.4VA at 20V AC/DC) and share identical panel mounting dimensions. The primary difference is the actuator design: the 7103MPYCPE uses an anti-rotation actuator at 5.08mm length, while the 100SP3T1B1M2REH uses a standard round actuator at 10.41mm length. Panel cutout and bushing thread specifications remain identical.

Q: When should I select the higher-rated E-Switch 100SP3T1B1M3QEH or Grayhill 34ASP32B3M2QT? A: These parts are appropriate when your application requires electrical ratings exceeding 0.4VA at 20V. Both provide 5A capacity at 120V/125V AC. The 100SP3T1B1M3QEH uses quick-connect termination, requiring circuit board redesign. The 34ASP32B3M2QT retains PC Pin termination, minimizing design changes. Select based on your actual electrical requirements and termination compatibility.

Q: Are all substitute parts RoHS3 compliant? A: The 7103MPYCPE, 100SP3T1B1M2REH, 100SP3T1B1M3QEH, and 34ASP32B3M2QT are all ROHS3 compliant. All parts maintain MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: What is the impact of different actuator lengths on panel design? A: The original 7103MPYCKE and direct equivalent 7103MPYCPE use 5.08mm actuators. The E-Switch alternatives use 10.41mm actuators, and the Grayhill alternative uses 6.86mm. Longer actuators may require panel cutout depth adjustments or operator interface modifications. Verify mechanical clearance in your specific panel design before selection.

Q: Can I use the higher-rated parts in a 0.4VA/20V application? A: Yes. The 100SP3T1B1M3QEH and 34ASP32B3M2QT are rated for significantly higher electrical loads (5A at 120V/125V AC). They will function correctly in lower-power applications, though this represents over-specification. Selection should be based on actual application requirements and cost considerations.