Original Part
Alternative Part
1. 5649AB Substitution Conclusion
The substitution is generally feasible but carries compatibility risks that require evaluation. This part is largely compatible in key electrical and mechanical interfaces (both DPDT, On-Off-On, solder lug terminals, and 1/4-40 threaded bushing), with AC current rating and electrical life (6A AC, 50,000 cycles) exceeding the original specifications. The primary deviation lies in its DC current rating of 4A, compared to the original 5A. This implies potential derating in DC load applications—actual DC load current must be confirmed not to exceed 4A. Additionally, the required panel cutout diameter is 6.50mm versus the original 6.35mm. Direct replacement may necessitate enlarging the existing panel cutout or verifying compatibility with the slightly larger dimension.
2. 7203SH3ZQE Substitution Conclusion
Direct replacement is acceptable with high compatibility. This part matches all critical parameters of the original (DPDT, On-Off-On, 5A AC/DC, 120V AC/28V DC, solder lug terminals, 6.35mm panel cutout, 1/4-40 threaded bushing, epoxy sealing, and 40,000-cycle electrical life). The only minor difference is a slightly shorter actuator length (10.16mm vs. 10.41mm), resulting in a roughly 0.25mm reduction in protrusion above the panel. This does not affect electrical performance, mounting dimensions, or basic operational functionality, allowing it to be considered a fully equivalent substitute.
Analysis ID: 0A9B-A5E3000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com