ST15KMCQ Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The ST15KMCQ is a toggle switch manufactured by APEM Inc., configured as a Single Pole Double Throw (SPDT) panel mount switch with On-Momentary function. This component is rated for 6A at 125V AC and 7A at 30V DC, featuring a standard round actuator with PC pin termination. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

ST15KMCQ

APEM Inc.In Stock: 1070ST15KMCQ Datasheet

Current PartRFQ

100SP2T1B1M2QEH

E-SwitchIn Stock: 1662100SP2T1B1M2QEH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST15KMCQ is determined by strict alignment of the following critical parameters:

• Circuit Configuration: Must be SPDT to maintain identical switching logic
• Switch Function: Must be On-Momentary to preserve operational behavior
• Mounting Type: Must be Panel Mount with matching mechanical interface
• Panel Cutout Dimensions: Must be Circular 6.35mm Dia for direct panel compatibility
• Bushing Thread: Must be 1/4-40 for secure mounting
• Actuator Type and Length: Must be Standard Round with 10.41mm length for consistent user interface
• Termination Style: Must be PC Pin for circuit board connection compatibility
• Current and Voltage Ratings: Substitute must meet or exceed the AC/DC ratings of the original part
• Operating Temperature Range: Must support -30°C to 85°C minimum
• Electrical Life: Must support minimum 40,000 cycles
• Compliance: Must maintain ROHS3 compliance status

The substitute part 100SP2T1B1M2QEH from E-Switch meets all mechanical and electrical substitution criteria for the ST15KMCQ.

Parameter Comparison

Engineering Selection Recommendations

The 100SP2T1B1M2QEH from E-Switch is a direct mechanical and functional substitute for the ST15KMCQ. Both components share identical circuit configuration, switch function, mounting interface, actuator specifications, and termination style. The substitute maintains full ROHS3 compliance and identical operating temperature range and electrical life specifications.

The primary consideration is electrical rating differential. The substitute part is rated at 5A AC/DC and 120V AC / 28V DC, compared to the original part's 6A AC, 7A DC, 125V AC, and 30V DC ratings. Applications operating at or below the substitute's electrical ratings will function identically to the original component. Applications requiring the full electrical capacity of the ST15KMCQ must evaluate whether the lower ratings of the substitute are acceptable for the specific circuit design.

The substitute part is currently in active production status with 1564 units in stock, providing supply continuity for the obsolete ST15KMCQ. Both components feature epoxy sealed terminals and identical mechanical interfaces, ensuring direct panel mount compatibility without modification.

Frequently Asked Questions (FAQ)

Q: Can the 100SP2T1B1M2QEH directly replace the ST15KMCQ in existing designs?

A: Yes, for applications operating at or below 5A AC/DC and 120V AC / 28V DC. The mechanical interface, circuit configuration, and switch function are identical. Applications requiring higher current or voltage ratings must evaluate circuit requirements against the substitute's electrical specifications.

Q: Are the panel mounting dimensions identical?

A: Yes. Both components feature a circular 6.35mm diameter panel cutout with 1/4-40 bushing thread, enabling direct panel mount compatibility without modification.

Q: What is the difference in actuator specifications?

A: Both components feature identical standard round actuators with 10.41mm length, providing the same user interface and mechanical feel.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the ST15KMCQ and 100SP2T1B1M2QEH are ROHS3 compliant and REACH unaffected, with identical moisture sensitivity levels and operating temperature ranges.

Q: What is the primary reason to consider the substitute?

A: The ST15KMCQ is obsolete, while the 100SP2T1B1M2QEH is in active production with current inventory availability. The substitute provides supply continuity for maintenance and new designs requiring this switch type.

Q: Are there any differences in termination or circuit board connection?

A: No. Both components use PC pin termination, ensuring identical circuit board interface and soldering requirements.