M3933/30-07S Replacement: AT-103V, 32AS102-K03S3

Original Part

M3933/30-07S

Amphenol SV Microwave

RF Attenuators 3dB 0 Hz ~ 32 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

AT-103V

Hirose Electric Co Ltd

RF Attenuators 3dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

32AS102-K03S3

Rosenberger

RF Attenuators 3dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. AT-103V Substitution Conclusion The AT-103V matches the original part in key parameters (3 dB attenuation, 50 Ω impedance, 2 W power rating, and connector type). However, its operational frequency range (0–18 GHz) is notably narrower than the original’s DC–32 GHz. Above 18 GHz up to 32 GHz, the AT-103V cannot guarantee the specified 3 dB attenuation accuracy or impedance matching performance. This may lead to increased insertion loss, degraded return loss, or signal distortion. The AT-103V can serve as a direct substitute only if the system’s maximum operating frequency does not exceed 18 GHz. For applications involving frequencies above 18 GHz, it is not a viable replacement.

2. 32AS102-K03S3 Substitution Conclusion Similar to the AT-103V, the 32AS102-K03S3 matches the original part in nominal electrical specifications (3 dB, 50 Ω, 2 W, SMA). The primary limitation again lies in its frequency range (0–18 GHz), which is only about half that of the original (DC–32 GHz). This difference directly restricts its applicability in the Ku‑band (18–26.5 GHz) and higher bands (such as the Ka‑band), where its attenuation accuracy, VSWR, and other performance metrics may fall outside acceptable limits. The conclusion is the same as for the AT‑103V: it is suitable only for systems with a maximum operating frequency ≤18 GHz and is not a feasible substitute for broadband or high‑frequency applications.

Analysis ID: B2BE-3F3A000

Based on part parameters and for reference only. Not to be used for procurement or production.