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APEM 5247AB Toggle Switch DPDT Equivalent & Substitute Parts
Part Overview
The APEM 5247AB is an active production toggle switch featuring DPDT (Double Pole Double Throw) circuitry with momentary-off-momentary (Mom-Off-Mom) switching function. This panel-mount component is rated for 6A AC at 125V and 4A DC at 30V, with non-illuminated operation and epoxy-sealed PC pin termination. The part remains in active production status with 704 units currently in stock. Substitute parts are identified when equivalent electrical ratings, mechanical mounting compatibility, and circuit configuration requirements can be met by alternative manufacturers while maintaining functional equivalence for the intended application.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 5247AB |
| Manufacturer | APEM Inc. |
| Circuit Configuration | DPDT |
| Switch Function | Mom-Off-Mom |
| Current Rating (AC) | 6A @ 125V |
| Current Rating (DC) | 4A @ 30V |
| Mounting Type | Panel Mount |
| Termination Style | PC Pin |
| Panel Cutout | Circular - 6.50mm Dia |
| Bushing Thread | 1/4-40 |
| Operating Temperature Range | -40°C to 85°C |
| Electrical Life | 50,000 Cycles |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility for the APEM 5247AB is determined by the following critical parameters:
Electrical Compatibility Requirements:
- Circuit configuration must be DPDT
- Switch function must be Mom-Off-Mom
- AC voltage rating must be minimum 120V (APEM rated 125V)
- AC current rating must be minimum 5A (APEM rated 6A)
- DC voltage rating must be minimum 28V (APEM rated 30V)
- DC current rating must be minimum 4A (APEM rated 4A)
Mechanical Compatibility Requirements:
- Mounting type must be Panel Mount
- Termination style must be PC Pin
- Panel cutout diameter must accommodate 6.35mm to 6.50mm circular opening
- Bushing thread must be 1/4-40
Compliance Requirements:
- RoHS3 compliance required
- Product status must be Active
The C&K 7205SYCQE meets all substitution criteria within these defined parameters.
Parameter Comparison
| Parameter | APEM 5247AB | C&K 7205SYCQE | Compatibility |
|---|---|---|---|
| Manufacturer | APEM Inc. | C&K | Different manufacturer |
| Circuit Configuration | DPDT | DPDT | Equivalent |
| Switch Function | Mom-Off-Mom | Mom-Off-Mom | Equivalent |
| Current Rating (AC) | 6A @ 125V | 5A @ 120V | C&K rated lower; acceptable for applications ≤5A @ ≤120V |
| Current Rating (DC) | 4A @ 30V | 5A @ 28V | C&K meets DC requirement |
| Mounting Type | Panel Mount | Panel Mount | Equivalent |
| Termination Style | PC Pin | PC Pin | Equivalent |
| Panel Cutout Diameter | 6.50mm | 6.35mm | Compatible; C&K requires 6.35mm opening |
| Bushing Thread | 1/4-40 | 1/4-40 | Equivalent |
| Actuator Length | 10.50mm | 10.67mm | Minimal difference; functionally equivalent |
| Operating Temperature | -40°C to 85°C | -30°C to 85°C | C&K range narrower; acceptable for applications ≥-30°C |
| Electrical Life | 50,000 Cycles | 40,000 Cycles | C&K rated lower; acceptable for applications ≤40,000 cycles |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| Product Status | Active | Active | Both in active production |
Engineering Selection Recommendations
Both the APEM 5247AB and C&K 7205SYCQE are active production components with ROHS3 compliance. Selection between these parts depends on application-specific electrical and environmental requirements:
Select APEM 5247AB when:
- AC load exceeds 5A or AC voltage exceeds 120V
- Operating temperature must extend below -30°C
- Electrical cycle life requirement exceeds 40,000 cycles
- Maximum performance margin is required
Select C&K 7205SYCQE when:
- AC load is 5A or less at 120V or less
- Operating temperature range of -30°C to 85°C is acceptable
- Electrical cycle life of 40,000 cycles meets application requirements
- Panel cutout of 6.35mm diameter is available
Both components feature identical circuit configuration, switch function, mounting type, termination style, and bushing thread specification. Both maintain ROHS3 compliance and active production status.
Frequently Asked Questions (FAQ)
Q: Can the C&K 7205SYCQE directly replace the APEM 5247AB in all applications?
A: The C&K 7205SYCQE is functionally equivalent for applications where AC current does not exceed 5A at 120V, DC current does not exceed 5A at 28V, operating temperature remains at or above -30°C, and electrical cycle life requirement does not exceed 40,000 cycles. Applications exceeding any of these parameters require the APEM 5247AB.
Q: What is the significance of the panel cutout diameter difference?
A: The APEM 5247AB requires a 6.50mm circular opening, while the C&K 7205SYCQE requires 6.35mm. Both are standard panel mount dimensions. Existing panel cutouts must accommodate the specific diameter of the selected component. A 6.50mm opening will not securely mount a 6.35mm component.
Q: Are there differences in actuator length between these parts?
A: The APEM 5247AB has a 10.50mm actuator length, while the C&K 7205SYCQE has 10.67mm. This 0.17mm difference is negligible for standard panel mount applications and does not affect functional compatibility.
Q: Do both parts have identical electrical life ratings?
A: No. The APEM 5247AB is rated for 50,000 electrical cycles, while the C&K 7205SYCQE is rated for 40,000 cycles. Applications requiring extended cycle life should specify the APEM part.
Q: What compliance certifications apply to both parts?
A: Both the APEM 5247AB and C&K 7205SYCQE are ROHS3 compliant. The APEM part is REACH Unaffected, while the C&K part is REACH Affected. Both carry EAR99 ECCN classification and identical HTSUS code 8536.50.9065.
Q: Can these parts be used interchangeably in existing designs?
A: Interchangeability depends on design margins. If the original design was specified for APEM 5247AB ratings (6A AC @ 125V, 4A DC @ 30V, -40°C to 85°C, 50,000 cycles), substitution with C&K 7205SYCQE is acceptable only if actual application loads and environmental conditions remain within C&K specifications. Design review is required to confirm compatibility.
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