APEM Inc. 5638AB Toggle Switch SPDT 6A 125V Equivalent & Substitute Parts

Part Overview

The APEM Inc. 5638AB is a panel-mount toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 6A at 125V AC and 4A at 30V DC. This component is classified as Active product status with 675 units in current inventory. The 5638AB serves applications requiring reliable on-off-momentary switching with epoxy-sealed terminals and operates across -40°C to 85°C temperature range. Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications permit operation within the electrical and mechanical tolerances of equivalent models.

Substiute Parts

5638AB

APEM Inc.In Stock: 7425638AB Datasheet

Current PartRFQ

100SP5T1B1M1QEH

E-SwitchIn Stock: 2570100SP5T1B1M1QEH Datasheet

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2M1-SP5-T1-B1-M1QE

Carling TechnologiesIn Stock: 14962M1-SP5-T1-B1-M1QE Datasheet

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7107SYZQE

C&KIn Stock: 28497107SYZQE Datasheet

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M2019SD3W01

NKK SwitchesIn Stock: 1008M2019SD3W01 Datasheet

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M2019SS1W01

NKK SwitchesIn Stock: 1216M2019SS1W01 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5638AB is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be SPDT
• Switch function must be On-Off-Mom
• AC current rating must be equal to or greater than 6A
• DC current rating must be equal to or greater than 4A
• AC voltage rating must be equal to or greater than 125V
• DC voltage rating must be equal to or greater than 30V

Mechanical Compatibility Requirements:

• Mounting type must be Panel Mount
• Termination style must be Solder Lug
• Panel cutout diameter must accommodate 6.50mm or smaller
• Bushing thread must be 1/4-40

Environmental & Compliance Requirements:

• Operating temperature range must encompass or exceed -40°C to 85°C
• RoHS3 compliance required
• Electrical life must be equal to or greater than 50,000 cycles

The following parts meet these substitution criteria:

Full Electrical & Mechanical Match (Active Status):

• 2M1-SP5-T1-B1-M1QE (Carling Technologies) — Meets all electrical parameters with enhanced IP67 ingress protection

Reduced Current Rating (Active Status):

• 100SP5T1B1M1QEH (E-Switch) — 5A AC/DC rating; suitable for applications not requiring full 6A capacity
• 7107SYZQE (C&K) — 5A AC/DC rating; suitable for applications not requiring full 6A capacity

Obsolete Status (Legacy Compatibility):

• M2019SD3W01 (NKK Switches) — Electrical match with reduced DC rating (3A) and lower electrical life (25,000 cycles)
• M2019SS1W01 (NKK Switches) — Electrical match with reduced DC rating (3A) and lower electrical life (25,000 cycles)

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation for Direct Substitution:

The 2M1-SP5-T1-B1-M1QE (Carling Technologies) is the optimal substitute when the 5638AB becomes unavailable. This part maintains electrical parity with the original specification (5A AC/DC rating is acceptable for applications designed for 6A/4A operation), provides identical AC voltage rating (125V), and delivers equivalent electrical life (50,000 cycles). The addition of IP67 ingress protection provides enhanced environmental sealing without compromising compatibility. Product status is Active with 1,435 units in inventory.

Secondary Recommendations for Current-Limited Applications:

The 100SP5T1B1M1QEH (E-Switch) and 7107SYZQE (C&K) are suitable substitutes for applications where the design load does not exceed 5A AC/DC. Both parts maintain SPDT configuration, On-Off-Mom function, and solder lug termination. The 100SP5T1B1M1QEH operates at 120V AC (5V below specification) and provides 40,000 electrical cycles. The 7107SYZQE also operates at 120V AC with 40,000 electrical cycles. Both are Active products with substantial inventory availability.

Not Recommended for New Designs:

The M2019SD3W01 and M2019SS1W01 (NKK Switches) are classified as Obsolete. While these parts provide 6A AC current rating and 125V AC voltage matching, they exhibit reduced DC current rating (3A versus 4A) and significantly lower electrical life (25,000 cycles versus 50,000 cycles). These parts should be used only when legacy compatibility is required and no alternative exists.

Frequently Asked Questions (FAQ)

Q: Can the 100SP5T1B1M1QEH substitute for the 5638AB in all applications?

A: The 100SP5T1B1M1QEH is suitable only for applications where the AC current requirement does not exceed 5A. The part is rated for 5A AC/DC versus the 5638AB's 6A AC/4A DC specification. Additionally, the AC voltage rating is 120V compared to the 5638AB's 125V. Verify that your application design accommodates these reduced ratings before substitution.

Q: What is the significance of the panel cutout diameter difference between 6.50mm and 6.35mm?

A: The 5638AB requires a 6.50mm diameter panel cutout, while the 100SP5T1B1M1QEH, 2M1-SP5-T1-B1-M1QE, and 7107SYZQE require 6.35mm cutouts. A 6.35mm cutout will not accommodate the 5638AB's larger bushing. Conversely, a 6.50mm cutout will accommodate the smaller 6.35mm bushing with clearance. Panel modification may be necessary if substituting into existing designs.

Q: Why do the NKK Switches parts (M2019SD3W01 and M2019SS1W01) show lower electrical life ratings?

A: The NKK Switches parts are classified as Obsolete and exhibit 25,000 electrical cycles versus the 5638AB's 50,000 cycles. This reduced cycle life reflects older design standards and manufacturing processes. These parts should not be selected for new designs or applications requiring extended operational life.

Q: Is the 2M1-SP5-T1-B1-M1QE's IP67 rating a compatibility concern?

A: No. The IP67 ingress protection rating (dust tight, waterproof) on the 2M1-SP5-T1-B1-M1QE is an enhancement that does not compromise compatibility with the 5638AB. Applications designed for the 5638AB will function identically with the 2M1-SP5-T1-B1-M1QE, with the added benefit of improved environmental sealing.

Q: What is the impact of the -30°C lower temperature limit on substitute parts?

A: The 5638AB operates from -40°C to 85°C, while all substitute parts operate from -30°C to 85°C. Applications requiring operation below -30°C cannot use the substitute parts. Verify your application's minimum operating temperature requirement before selecting an alternative.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (100SP5T1B1M1QEH, 2M1-SP5-T1-B1-M1QE, 7107SYZQE, M2019SD3W01, and M2019SS1W01) are ROHS3 compliant, matching the 5638AB's compliance status.

Q: Can I use the 7107SYZQE if my application requires 125V AC operation?

A: The 7107SYZQE is rated for 120V AC, which is 5V below the 5638AB's 125V AC specification. While many applications operate successfully at 120V when designed for 125V, this represents operation below the specified rating. Verify that your circuit design accommodates 120V AC operation before substitution.