C&K 7101SPH3WLE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7101SPH3WLE is a panel-mounted toggle switch with SPDT (Single Pole Double Throw) configuration, rated for 5A at 120V AC and 28V DC. This component features an anti-rotation actuator, wire wrap termination, and epoxy sealed terminals suitable for industrial control applications. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure long-term component availability for new designs and field replacements.

Substiute Parts

7101SPH3WLE

C&KIn Stock: 9787101SPH3WLE Datasheet

Current PartRFQ

7101SPH3WRE

C&KIn Stock: 9127101SPH3WRE Datasheet

DirectRFQ

A123S1YWQ

ElectroswitchIn Stock: 937A123S1YWQ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7101SPH3WLE is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration: SPDT
• Switch function: On-On
• Mounting type: Panel Mount
• Termination style: Wire Wrap
• Bushing thread: 1/4-40
• Current rating: Minimum 5A (AC/DC)
• Voltage rating: Minimum 120V AC and 28V DC
• Actuator length: 10.16mm ±0.25mm tolerance window
• Panel cutout dimensions: Circular - 6.35mm Dia
• Operating temperature range: Must encompass -30°C to 85°C

Acceptable Variation Parameters:

• Actuator type: Anti-rotation or standard round (mechanical interface compatibility)
• Electrical life: Equal to or exceeding 100,000 cycles
• Product status: Active preferred for long-term availability
• RoHS compliance: May differ from original (compliance upgrade acceptable)

Two substitute parts meet these criteria: the C&K 7101SPH3WRE (direct manufacturer equivalent) and the Electroswitch A123S1YWQ (cross-manufacturer alternative).

Parameter Comparison

Engineering Selection Recommendations

C&K 7101SPH3WRE (Recommended Primary Substitute)

The 7101SPH3WRE is the direct manufacturer equivalent and represents the optimal substitution path. This part maintains identical electrical ratings (5A, 120V AC, 28V DC), mechanical interface specifications (panel cutout, bushing thread, actuator length), and operational performance (100,000 cycle electrical life). The primary distinction is product status: the 7101SPH3WRE is active, ensuring sustained manufacturing support and supply chain availability. Additionally, this part achieves RoHS compliance, meeting modern regulatory requirements for new equipment designs and procurement standards. The anti-rotation actuator type and wire wrap termination remain unchanged, eliminating integration risk.

Electroswitch A123S1YWQ (Secondary Alternative)

The A123S1YWQ serves as a cross-manufacturer alternative when C&K 7101SPH3WRE availability is constrained. This part exceeds the original electrical specifications with 6A current rating and 125V AC voltage rating, providing operational margin. The operating temperature range extends to 90°C, exceeding the original -30°C to 85°C specification. However, two parameters require engineering evaluation: the actuator length is 10.41mm (0.25mm longer than the original 10.16mm), and electrical life is rated at 60,000 cycles (40% lower than the original 100,000 cycles). Panel cutout dimensions are not specified, requiring verification against mechanical drawings. This part is suitable for applications where the extended electrical ratings and temperature range offset the reduced cycle life and potential mechanical fit considerations.

Frequently Asked Questions (FAQ)

Q: Can the 7101SPH3WRE directly replace the 7101SPH3WLE without circuit modification?

A: Yes. The 7101SPH3WRE maintains identical electrical ratings, circuit configuration (SPDT On-On), current capacity (5A AC/DC), voltage ratings (120V AC, 28V DC), and mechanical interface specifications (panel mount, 1/4-40 bushing thread, 6.35mm circular cutout). No circuit redesign or panel modification is required.

Q: What is the significance of the actuator length difference between the 7101SPH3WLE and A123S1YWQ?

A: The 7101SPH3WLE specifies 10.16mm actuator length; the A123S1YWQ is 10.41mm. This 0.25mm difference may affect panel clearance and operator feel. Verify against mechanical drawings and panel geometry before selection. The 7101SPH3WRE maintains the original 10.16mm specification.

Q: Why does the A123S1YWQ have lower electrical life (60,000 cycles vs. 100,000 cycles)?

A: Electrical life ratings reflect contact wear characteristics specific to each manufacturer's design and materials. The A123S1YWQ's 60,000-cycle rating is still suitable for most industrial control applications. Applications requiring extended cycle life should prioritize the 7101SPH3WRE.

Q: Is RoHS compliance required for my application?

A: The original 7101SPH3WLE is RoHS non-compliant. Both substitute parts (7101SPH3WRE and A123S1YWQ) are RoHS compliant. If your procurement or regulatory requirements mandate RoHS compliance, either substitute is acceptable. If legacy non-compliant components are specifically required, neither substitute is appropriate.

Q: What does "Wire Wrap" termination mean?

A: Wire wrap termination uses wrapped wire connections around square or rectangular pins, secured mechanically without solder. All three parts (original and both substitutes) employ this termination style, ensuring compatibility with existing wire wrap tooling and assembly processes.

Q: Can I use the A123S1YWQ in high-cycle applications?

A: The A123S1YWQ is rated for 60,000 electrical cycles. Applications exceeding this cycle count should use the 7101SPH3WRE (100,000 cycles) or the original 7101SPH3WLE. Verify actual application cycle requirements against component ratings.

Q: Are there packaging differences between these parts?

A: The 7101SPH3WLE and 7101SPH3WRE are both C&K 7000 series components with consistent packaging. The A123S1YWQ is packaged in bulk format. Verify packaging requirements for your procurement and assembly processes.