Original Part
Alternative Part
1. AT-108V Substitution Conclusion
The AT-108V falls short of the original part only in one key parameter: its upper operating frequency limit (18 GHz) does not fully cover the original's specification (32 GHz). All other core parameters—attenuation (8 dB), impedance (50 Ω), power rating (2 W), and connector interface—are matched. If your application frequency is definitively limited to 18 GHz or below, the AT-108V can serve as a direct substitute in terms of both electrical performance and mechanical interface. However, it is entirely unsuitable for any system operating within the 18 GHz to 32 GHz range. Note that the manufacturer has changed from Amphenol to Hirose, which may introduce subtle differences in high-frequency performance (e.g., VSWR, phase consistency). It is advisable to validate performance within the actual operating band before substitution.
2. M3933/25-34S Substitution Conclusion
Similar to the AT-108V, the M3933/25-34S has only one primary technical limitation compared to the original part: its frequency range (0–18 GHz) versus the original's (0–32 GHz). All other specified parameters are identical. As a different product series from the same manufacturer (Amphenol SV Microwave), it may offer advantages in process consistency and quality over a cross-brand substitute. For systems operating below 18 GHz, it represents a reliable, same-brand downgrade alternative. However, it cannot replace the original part in any scenario requiring operation above 18 GHz. As always, verification of its performance at the specific application frequency is recommended prior to substitution to ensure it meets system requirements.
Analysis ID: 4E87-559F000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com