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

Part Overview

The C&K 7103SPHZGI is a panel-mount toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 5A at 120V AC and 28V DC. This switch features an anti-rotation brass actuator with chrome plating, epoxy potting, and solder lug termination. The product is currently active and ROHS3 compliant.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain constraints occur, or when design flexibility is required across manufacturing batches while maintaining electrical and mechanical compatibility.

Substiute Parts

7103SPHZGI

C&KIn Stock: 10497103SPHZGI Datasheet

Current PartRFQ

100SP3T6B11M1QEH

E-SwitchIn Stock: 974100SP3T6B11M1QEH Datasheet

SimilarRFQ

M2013SS1W01

NKK SwitchesIn Stock: 861M2013SS1W01 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Mandatory Matching Parameters:

• Circuit configuration: SPDT
• Switch function: On-Off-On
• Current rating: 5A minimum (AC/DC)
• Voltage rating: 120V AC minimum, 28V DC minimum
• Mounting type: Panel Mount
• Panel cutout dimensions: Circular 6.35mm diameter
• Bushing thread: 1/4-40
• Termination style: Solder Lug
• Operating temperature range: -30°C to 85°C minimum

Allowable Variations:

• Actuator type and length (within mechanical compatibility)
• Actuator material composition
• Epoxy potting versus epoxy sealed terminals
• Electrical life rating (equal or greater)
• Manufacturer identity

Parts meeting all mandatory parameters are classified as direct substitutes. Parts with higher electrical ratings or extended electrical life are acceptable. Parts with lower ratings, different mounting configurations, or incompatible panel cutout dimensions are not suitable substitutes.

Parameter Comparison

Engineering Selection Recommendations

E-Switch 100SP3T6B11M1QEH

This part is a direct substitute for the 7103SPHZGI. Both parts share identical electrical ratings (5A AC/DC, 120V AC, 28V DC), matching circuit configuration, panel cutout dimensions, and bushing thread specifications. Both are ROHS3 compliant and active products. The E-Switch variant features a flat anti-rotation actuator with 12.30mm length compared to the C&K's 10.67mm anti-rotation actuator, and uses epoxy sealed terminals instead of epoxy potting. These mechanical differences do not affect electrical compatibility or panel mounting. Electrical life ratings are equivalent at 40,000 cycles.

NKK Switches M2013SS1W01

This part has limited substitution applicability. While it meets the SPDT circuit, On-Off-On function, and panel mount requirements with matching bushing thread (1/4-40), it presents the following constraints: the panel cutout diameter is 6.50mm versus the required 6.35mm, requiring panel modification; DC current rating is 3A versus the required 5A, making it unsuitable for DC applications at full load; electrical life is 25,000 cycles versus 40,000 cycles, indicating reduced durability; product status is obsolete, limiting future availability. This part is not recommended as a primary substitute.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch 100SP3T6B11M1QEH be used as a direct replacement for the C&K 7103SPHZGI without circuit modification?

A: Yes. Both parts have identical electrical specifications (5A AC/DC, 120V AC, 28V DC), SPDT circuit configuration, and solder lug termination. Panel mounting dimensions are compatible (6.35mm circular cutout, 1/4-40 bushing thread). No circuit modification is required.

Q: What is the difference between epoxy potting and epoxy sealed terminals?

A: Both provide environmental protection. Epoxy potting encapsulates the entire switch mechanism in epoxy resin. Epoxy sealed terminals apply epoxy specifically to the terminal connections. Both approaches provide equivalent moisture and contamination protection for this product category.

Q: Why is the NKK Switches M2013SS1W01 listed as a substitute if it has a different panel cutout diameter?

A: The M2013SS1W01 is provided for reference as a related SPDT toggle switch from an alternative manufacturer. However, the 6.50mm panel cutout diameter versus the required 6.35mm creates a mechanical incompatibility requiring panel modification. Additionally, the 3A DC rating is insufficient for applications requiring 5A DC operation. This part is not recommended for direct substitution.

Q: Are there any compliance differences between the C&K and E-Switch parts?

A: Both parts are ROHS3 compliant. The C&K part is REACH Affected; the E-Switch part is REACH Unaffected. Both carry EAR99 ECCN classification. Compliance requirements should be verified against specific application and regional regulations.

Q: What is the significance of the 40,000 cycle electrical life rating?

A: Electrical life indicates the number of switching cycles the part can perform while maintaining specified electrical performance. The 40,000 cycle rating for both the C&K and E-Switch parts indicates equivalent durability for this product class. The NKK part's 25,000 cycle rating represents reduced operational life expectancy.