M3933/25-32S Replacement: FMAT1011, LCAT1005-06

Original Part

M3933/25-32S

Amphenol SV Microwave

RF Attenuators 6dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

FMAT1011

Fairview Microwave

RF Attenuators 6dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

LCAT1005-06

L-com

RF Attenuators 6dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. FMAT1011 Substitution Conclusion The FMAT1011 matches the original part M3933/25-32S in attenuation value, power rating, impedance, and package outline. However, its frequency range is limited to 0 Hz–6 GHz, whereas the original part covers 0 Hz–18 GHz. Consequently, the FMAT1011 is only suitable for low-frequency applications. In bands above 6 GHz—such as microwave communications, radar, or high-frequency test systems—it may fail to maintain the specified attenuation performance, potentially leading to signal distortion or additional insertion loss. Due to this limitation, substitution feasibility is low unless the application is strictly confined to frequencies below 6 GHz.

2. LCAT1005-06 Substitution Conclusion The LCAT1005-06 fully aligns with the original part M3933/25-32S in all key parameters—attenuation value (6 dB), power rating (2 W), impedance (50 Ω), SMA In-Line package—and frequency range (0 Hz–18 GHz), with no significant technical deviations. It can directly replace the original part in broadband applications, delivering identical RF attenuation performance. This makes it suitable for high-frequency environments such as satellite communications or instrumentation, without concern for performance degradation. Therefore, substitution feasibility is high.

Analysis ID: 2339-2FEE000

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