ST22KYAQ Toggle Switch DPDT Equivalent & Substitute Parts

Part Overview

The ST22KYAQ is a panel mount toggle switch manufactured by APEM Inc., configured as a double-pole double-throw (DPDT) switch with On-Off-On functionality. 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 currently obsolete, making equivalent and substitute parts necessary for ongoing maintenance, repair, and new design applications requiring compatible switching functionality.

Substiute Parts

ST22KYAQ

APEM Inc.In Stock: 1136ST22KYAQ Datasheet

Current PartRFQ

7203P3DAGE

C&KIn Stock: 8837203P3DAGE Datasheet

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7203P3DAQE

C&KIn Stock: 9137203P3DAQE Datasheet

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7203P3YAGE

C&KIn Stock: 8437203P3YAGE Datasheet

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7203P3YAGE2

C&KIn Stock: 11697203P3YAGE2 Datasheet

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7203P3YAQE

C&KIn Stock: 11597203P3YAQE Datasheet

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7203P3YAQE22

C&KIn Stock: 9987203P3YAQE22 Datasheet

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M2023SS1W30

NKK SwitchesIn Stock: 879M2023SS1W30 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST22KYAQ is determined by the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration: DPDT
• Switch function: On-Off-On
• Mounting type: Panel Mount, Right Angle
• Termination style: PC Pin
• Panel cutout dimensions: Circular - 6.35mm Dia
• Bushing thread: 1/4-40
• Operating temperature range: -30°C ~ 85°C

Electrical Compatibility Parameters:

• Current rating must meet or exceed 6A AC and 7A DC requirements
• Voltage rating must meet or exceed 125V AC and 30V DC requirements

Acceptable Variations:

• Actuator type (Standard Round vs. Flat Anti-Rotation)
• Actuator length (within mechanical envelope constraints)
• Actuator material finish (Nickel Plated vs. Chrome Plated)
• Electrical life rating (40,000 cycles minimum)
• Manufacturer identity (different OEM, same functional class)

The C&K 7000 series parts (7203P3DAGE, 7203P3DAQE, 7203P3YAGE, 7203P3YAGE2, 7203P3YAQE, 7203P3YAQE22) meet all mandatory parameters with electrical ratings of 5A AC/DC at 120V AC and 28V DC. These ratings are within the operational envelope of the ST22KYAQ for most standard applications. The NKK Switches M2023SS1W30 provides an alternative with matching electrical specifications but differs in mounting configuration (Through Hole vs. Panel Mount).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (C&K 7000 Series):

The C&K 7203P3 series parts represent the most direct functional equivalents for the ST22KYAQ. All six variants (7203P3DAGE, 7203P3DAQE, 7203P3YAGE, 7203P3YAGE2, 7203P3YAQE, 7203P3YAQE22) maintain identical mechanical interfaces, circuit configuration, and operating temperature specifications. These parts are currently in active production status, ensuring long-term availability and supply chain stability. The electrical ratings of 5A AC/DC at 120V AC and 28V DC are marginally lower than the ST22KYAQ but remain suitable for applications within these reduced parameters.

Selection among the six C&K variants depends on specific mechanical and feature requirements:

• 7203P3DAGE and 7203P3DAQE feature longer actuators (13.21mm) with flat anti-rotation design
• 7203P3YAGE, 7203P3YAGE2, 7203P3YAQE, and 7203P3YAQE22 feature shorter actuators (11.43mm) with flat anti-rotation design
• 7203P3YAGE2 and 7203P3YAQE22 include black actuator finish
• All C&K variants include epoxy sealed terminals or black actuator features for enhanced environmental protection

Secondary Alternative (NKK Switches M2023SS1W30):

The NKK Switches M2023SS1W30 provides electrical specifications matching the ST22KYAQ (6A AC at 125V, 3A DC at 30V) with identical circuit and switch function. However, this part differs in mounting configuration (Through Hole vs. Panel Mount), making it suitable only for applications where PCB-mounted installation is acceptable. The M2023SS1W30 is also obsolete, limiting its utility for new designs. Electrical life is rated at 25,000 cycles, below the 40,000-cycle specification of the ST22KYAQ.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and operate within the -30°C to 85°C temperature range. The C&K parts carry REACH Affected status, while the ST22KYAQ and NKK part are REACH Unaffected. This distinction may be relevant for applications subject to REACH regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the C&K 7203P3 series parts directly replace the ST22KYAQ in existing designs?

A: Yes, mechanically and functionally. All C&K variants share identical panel cutout dimensions (6.35mm circular), bushing thread (1/4-40), and PC pin termination. The flat anti-rotation actuator design differs from the ST22KYAQ's standard round actuator but provides equivalent switching performance. Verify that your application can operate within the reduced electrical ratings (5A AC/DC vs. 6A/7A).

Q: What is the difference between the six C&K 7203P3 variants?

A: The variants differ in actuator length and finish. The 7203P3DAGE and 7203P3DAQE have 13.21mm actuators, while 7203P3YAGE, 7203P3YAGE2, 7203P3YAQE, and 7203P3YAQE22 have 11.43mm actuators. The YAGE2 and YAQE22 variants feature black actuator finish. All maintain identical electrical specifications and panel mounting interfaces.

Q: Why are the C&K parts rated at 5A instead of 6A?

A: The C&K 7203P3 series is designed with different internal contact geometry and materials compared to the ST22KYAQ. The 5A AC/DC rating reflects the electrical design of these components. For applications requiring the full 6A AC or 7A DC capacity of the original part, the NKK M2023SS1W30 provides matching ratings, though it uses through-hole mounting.

Q: Is the NKK M2023SS1W30 a suitable replacement?

A: The NKK part matches the electrical specifications of the ST22KYAQ but uses through-hole PCB mounting instead of panel mounting. This makes it suitable only for applications where PCB-mounted installation is acceptable. Additionally, the NKK part is obsolete and has a lower electrical life rating (25,000 cycles vs. 40,000 cycles).

Q: What does "flat anti-rotation" actuator mean?

A: The flat anti-rotation actuator design includes a flat surface that prevents unintended rotation of the actuator stem. This provides more positive positioning compared to a standard round actuator. Both designs function identically as DPDT On-Off-On switches.

Q: Are there inventory considerations for these substitutes?

A: Yes. The C&K 7203P3 series parts are in active production with substantial inventory (817–1,111 pieces reported). The ST22KYAQ (1,101 pieces) and NKK M2023SS1W30 (816 pieces) are obsolete. For new designs, the C&K parts offer superior long-term availability.

Q: Do all these parts meet RoHS compliance?

A: Yes, all listed parts are ROHS3 compliant. However, the C&K parts carry REACH Affected status, while the ST22KYAQ and NKK part are REACH Unaffected. Verify compliance requirements for your specific application and regulatory jurisdiction.