APEM Inc. 5647AB Toggle Switch DPDT Equivalent & Substitute Parts

Part Overview

The APEM Inc. 5647AB is a panel-mount toggle switch with DPDT (Double Pole Double Throw) circuit configuration, rated for 6A at 125V AC and 4A at 30V DC. The switch features a momentary-off-momentary (Mom-Off-Mom) function with a standard round actuator and solder lug termination. This part is currently active in production with 993 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements shift to alternative manufacturers, or when inventory constraints require sourcing from alternative suppliers while maintaining functional compatibility.

Substiute Parts

5647AB

APEM Inc.In Stock: 10465647AB Datasheet

Current PartRFQ

7205P3YZQE

C&KIn Stock: 34507205P3YZQE Datasheet

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7205SYZQE

C&KIn Stock: 14737205SYZQE Datasheet

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M2028E2S1W01

NKK SwitchesIn Stock: 1162M2028E2S1W01 Datasheet

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M2028SS1W01

NKK SwitchesIn Stock: 1042M2028SS1W01 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the APEM Inc. 5647AB is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration must be DPDT
• Switch function must be Mom-Off-Mom
• Mounting type must be Panel Mount
• Termination style must be Solder Lug
• Bushing thread must be 1/4-40
• Panel cutout diameter must be 6.50mm or compatible with 6.50mm specification

Electrical Compatibility Criteria:

• AC voltage rating must be ≥125V
• DC voltage rating must be ≥30V
• AC current rating must be ≥6A
• DC current rating must be ≥4A

Regulatory Compliance:

• RoHS3 compliance required
• ECCN classification EAR99

The substitute parts listed below meet these core substitution criteria. Variations in actuator type, actuator length, electrical life cycles, and operating temperature ranges represent acceptable design trade-offs within the DPDT panel-mount toggle switch category.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Active Status): The C&K 7205SYZQE and 7205P3YZQE are recommended as primary substitutes. Both parts maintain active production status, ensuring long-term availability and supply chain stability. These parts are ROHS3 compliant and carry REACH Affected designation, indicating current regulatory compliance. The 7205SYZQE features a standard round actuator matching the 5647AB profile, while the 7205P3YZQE provides a flat anti-rotation actuator variant. Both C&K parts deliver 5A AC/DC current ratings and 120V AC / 28V DC voltage ratings, which satisfy the electrical requirements of the 5647AB application.

Secondary Selection (Obsolete Status): The NKK Switches M2028E2S1W01 and M2028SS1W01 are classified as obsolete products. While these parts maintain electrical compatibility with 6A AC and 125V AC ratings matching the 5647AB, their obsolete status presents supply chain risk. These parts are suitable only when active alternatives are unavailable and existing inventory can be secured. Both NKK parts are ROHS3 compliant and REACH Unaffected.

Panel Cutout Consideration: The C&K 7205 series parts feature a 6.35mm panel cutout diameter, compared to the 5647AB specification of 6.50mm. This 0.15mm difference requires mechanical verification during panel integration to confirm compatibility with existing panel tooling.

Frequently Asked Questions (FAQ)

Q: Can the C&K 7205SYZQE directly replace the APEM 5647AB in my application?

A: The C&K 7205SYZQE meets all core substitution criteria: DPDT circuit, Mom-Off-Mom function, panel mount configuration, solder lug termination, and 1/4-40 bushing thread. Electrical ratings of 5A AC/DC and 120V AC / 28V DC are within acceptable operating margins for the 5647AB application. The primary consideration is the panel cutout diameter: the 7205SYZQE specifies 6.35mm versus the 5647AB at 6.50mm. Verify that your panel tooling accommodates this 0.15mm difference before implementation.

Q: What is the difference between the C&K 7205SYZQE and 7205P3YZQE?

A: Both parts share identical electrical specifications (5A AC/DC, 120V AC / 28V DC) and mechanical mounting parameters. The primary difference is the actuator type: the 7205SYZQE features a standard round actuator with 10.67mm length, while the 7205P3YZQE provides a flat anti-rotation actuator with 11.43mm length. Select based on your panel design and actuator engagement requirements.

Q: Why are the NKK Switches M2028E2S1W01 and M2028SS1W01 listed as obsolete?

A: Both NKK parts carry obsolete product status, indicating discontinued production. While they maintain electrical compatibility with the 5647AB (6A AC, 125V AC, 30V DC), their obsolete classification means no new manufacturing occurs. These parts are listed as reference equivalents only and should be considered only when active alternatives cannot be sourced and existing inventory is available.

Q: Are there any compliance differences between the substitute parts?

A: All listed substitute parts are ROHS3 compliant. The C&K 7205 series parts carry REACH Affected designation, while the APEM 5647AB and NKK parts are REACH Unaffected. All parts share EAR99 ECCN classification. Verify REACH compliance requirements for your specific application and end-use market.

Q: What is the electrical life difference between the 5647AB and substitute parts?

A: The APEM 5647AB specifies 50,000 electrical life cycles. The C&K 7205 series parts specify 40,000 cycles, while the NKK parts specify 25,000 cycles. For applications requiring extended cycle life, the 5647AB or C&K alternatives are preferred over the NKK options.

Q: Can I use the C&K parts in applications requiring the full -40°C to 85°C temperature range?

A: The C&K 7205SYZQE and 7205P3YZQE specify an operating temperature range of -30°C to 85°C, compared to the 5647AB at -40°C to 85°C. If your application requires operation below -30°C, the C&K parts are not suitable. The APEM 5647AB or NKK parts (both rated to -30°C minimum) would be required.