FMAT7620-8 Replacement: M3933/30-17S, SA18E-08

Original Part

FMAT7620-8

Fairview Microwave

RF Attenuators 8dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

M3933/30-17S

Amphenol SV Microwave

RF Attenuators 8dB 0 Hz ~ 32 GHz 50 Ohms 2W SMA In-Line Module

SA18E-08

Fairview Microwave

RF Attenuators 8dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. M3933/30-17S Substitution Conclusion From a core electrical parameter standpoint, the M3933/30-17S can fully substitute the original FMAT7620-8 part. Both units are identical in attenuation (8dB), power handling (2W), and impedance (50Ω). They share the same SMA coaxial interface, ensuring mechanical compatibility. The key difference lies in the frequency range: the M3933/30-17S extends from 0 Hz to 32 GHz, outperforming the original part's 18 GHz specification. This provides broader high-frequency applicability and greater frequency performance margin. Direct replacement is feasible for frequencies up to 18 GHz. For operation within the 18 to 32 GHz range, the M3933/30-17S can also be used normally without introducing performance degradation.

2. SA18E-08 Substitution Conclusion The SA18E-08 can be considered a direct drop-in replacement for the original FMAT7620-8 part. All critical parameters—including attenuation, frequency range (0 Hz to 18 GHz), power handling, impedance, and interface type (SMA)—are identical. Both are equivalent parts from the same manufacturer, Fairview Microwave. Technical distinctions are limited to the part number and potential internal construction details, with no electrical performance differences. In practical application, the units are directly interchangeable without requiring circuit adjustments or concern for performance deviation.

Analysis ID: 65D2-4B28000

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