Original Part
Alternative Part
1. AT-112V Substitution Conclusion
The AT-112V can serve as a conditional substitute for the original part M3933/30-25S, with the primary difference being its frequency range, which is reduced from 0–32 GHz to 0–18 GHz. This part is only suitable for applications operating below 18 GHz (such as mainstream 5G sub‑6GHz, wireless communications, and mid‑ to low‑frequency radar bands). If the system frequency exceeds 18 GHz (e.g., millimeter‑wave communications, high‑frequency test systems), attenuation performance will degrade or the component may fail. Apart from frequency, all other key parameters—12 dB attenuation, 2 W power handling, 50 Ω impedance, and SMA interface—are identical to the original part. Hirose Electric is a reliable manufacturer, and mechanical compatibility is not an issue. It is recommended to strictly verify that the system’s maximum operating frequency does not exceed 18 GHz before substitution and to perform on‑board testing for validation.
2. M3933/25-38S Substitution Conclusion
The M3933/25-38S is a highly compatible alternative to the original part M3933/30-25S, with the same difference in frequency upper limit—reduced from 32 GHz to 18 GHz. This limitation restricts its use to applications below 18 GHz; it cannot cover Ka‑band or higher‑frequency advanced microwave systems. However, since it belongs to the same Amphenol SV Microwave product line as the original part, it maintains high design‑process, material, and reliability consistency. Moreover, its attenuation value, power rating, impedance, and interface type are fully matched. Therefore, within the 0–18 GHz range, it can be regarded as an essentially equivalent replacement. Provided the frequency requirement is met, this part is recommended as the preferred substitute to preserve maximum technical alignment with the original design.
Analysis ID: EB22-F6D8000
Based on part parameters and for reference only. Not to be used for procurement or production.
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