SWW249CD7 Toggle Switch DPDT Equivalent & Substitute Parts

Part Overview

The SWW249CD7 is an APEM Inc. toggle switch featuring DPDT (Double Pole Double Throw) circuitry with On-Off-On switching function. This through-hole, right-angle vertical mounted component is rated for 0.4VA at 20V AC/DC operation. The part is currently active in production with 692 units in stock. Alternative equivalent parts may be required due to inventory constraints, specific packaging requirements, or application-specific environmental conditions such as ingress protection ratings or operating temperature ranges.

Substiute Parts

SWW249CD7

APEM Inc.In Stock: 775SWW249CD7 Datasheet

Current PartRFQ

E203MD1AV2BE

C&KIn Stock: 1053E203MD1AV2BE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The E203MD1AV2BE from C&K qualifies as a functional equivalent to the SWW249CD7 based on the following critical parameters:

Matching Parameters (Substitution Basis):

• Circuit configuration: DPDT
• Switch function: On-Off-On
• Current rating: 0.4VA (AC/DC)
• Voltage rating: 20V AC and 20V DC
• Mounting type: Through Hole, Right Angle, Vertical
• Actuator type: Standard Round
• Termination style: PC Pin
• Non-illuminated design
• RoHS3 compliance

Allowable Variations:

• Actuator length: 7.50mm (SWW249CD7) vs. 7.62mm (E203MD1AV2BE) — within mechanical tolerance
• Operating temperature range: -20°C to 85°C vs. -30°C to 85°C — extended lower temperature capability
• Electrical life: 50,000 cycles vs. 40,000 cycles — reduced cycle rating
• Ingress protection: None specified vs. IP57 — enhanced environmental sealing
• Packaging: Bulk vs. Tray — different supply format
• Manufacturer: APEM Inc. vs. C&K — different OEM

Parameter Comparison

Engineering Selection Recommendations

Both parts meet ROHS3 compliance and EAR99 export classification requirements. The SWW249CD7 offers higher electrical life rating at 50,000 cycles. The E203MD1AV2BE provides extended lower operating temperature capability (-30°C vs. -20°C) and IP57 ingress protection, making it suitable for applications requiring enhanced environmental sealing. Selection between these parts depends on application-specific requirements for cycle life, temperature range, and environmental protection. Both parts are active products with adequate inventory availability.

Frequently Asked Questions (FAQ)

Q: Can E203MD1AV2BE directly replace SWW249CD7 in existing designs? A: Yes, provided the application does not depend on the higher 50,000-cycle electrical life specification of the SWW249CD7. The E203MD1AV2BE is rated for 40,000 cycles. All electrical parameters, circuit configuration, and mounting characteristics are identical.

Q: What is the significance of the 0.12mm actuator length difference? A: The actuator length difference (7.50mm vs. 7.62mm) is within standard mechanical tolerance for toggle switch applications. Panel cutout dimensions and mounting geometry remain compatible for through-hole, right-angle vertical installations.

Q: Does the IP57 rating on E203MD1AV2BE affect compatibility? A: No. IP57 ingress protection is an additional feature that enhances environmental sealing. It does not create incompatibility; rather, it provides superior protection in humid or wet environments compared to the unspecified ingress protection of SWW249CD7.

Q: Are there packaging considerations when switching between these parts? A: Yes. SWW249CD7 is supplied in Bulk packaging, while E203MD1AV2BE is supplied in Tray packaging. Procurement and handling procedures may differ accordingly.

Q: Which part should be selected for low-temperature applications below -20°C? A: The E203MD1AV2BE is rated for operation down to -30°C, making it the appropriate choice for applications requiring extended lower temperature performance.