SA6-09 Replacement: AT-109V, M3933/25-35S

Original Part

SA6-09

Fairview Microwave

RF Attenuators 9dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

AT-109V

Hirose Electric Co Ltd

RF Attenuators 9dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

M3933/25-35S

Amphenol SV Microwave

RF Attenuators 9dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. AT-109V Substitution Conclusion The AT-109V is a fully qualified substitute for the original SA6-09 part. All core parameters, including attenuation value (9dB), rated power (2W), characteristic impedance (50Ω), and physical interface (SMA In-Line Module), are identical. The key distinction is that the AT-109V offers a significantly wider frequency range (0-18 GHz) compared to the original's 0-6 GHz. This extended range ensures superior electrical performance (e.g., attenuation accuracy, VSWR) at higher frequencies and provides greater operational bandwidth margin for the system. It represents a performance-equivalent or superior replacement option.

2. M3933/25-35S Substitution Conclusion The M3933/25-35S is a complete functional replacement for the original SA6-09. All fundamental specifications—attenuation, power handling, impedance, and interface type—are perfectly matched. The primary difference, again, is its substantially broader operational frequency range (0-18 GHz versus 0-6 GHz), guaranteeing specified performance metrics up to 18 GHz. Furthermore, its part numbering convention (M3933) suggests compliance with relevant military standards or more rigorous reliability screening. This implies potentially superior environmental robustness, long-term stability, and consistency compared to standard commercial-grade components, making it a high-performance, high-reliability direct substitute.

Analysis ID: CD49-06EE000

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