FMAT7466-1 Replacement: AT-101V, M3933/30-03N

Original Part

FMAT7466-1

Fairview Microwave

RF Attenuators 1dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

AT-101V

Hirose Electric Co Ltd

RF Attenuators 1dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

M3933/30-03N

Amphenol SV Microwave

RF Attenuators 1dB 0 Hz ~ 32 GHz 50 Ohms 2W SMA In-Line Module

1. AT-101V Substitution Conclusion From a core electrical parameter standpoint, the AT-101V can directly replace the original FMAT7466-1 part. The key difference lies in its extended frequency range, which reaches 18 GHz compared to the original’s 12 GHz. Within the 12 GHz and lower spectrum, the AT-101V fully covers and may even exhibit better frequency response flatness and consistency. Meanwhile, its power rating (2W), impedance (50Ω), attenuation value (1dB), and SMA connector interface remain identical, ensuring both electrical compatibility and mechanical interchangeability within the original design bandwidth. For applications not exceeding 12 GHz, this substitution is technically feasible and reliable.

2. M3933/30-03N Substitution Conclusion The M3933/30-03N also meets the basic substitution requirements in terms of key parameters. Its most notable technical distinction is a further extended frequency range up to 32 GHz, significantly exceeding the original part’s 12 GHz. This component employs higher-frequency design and material processes, typically offering excellent performance margin in applications below 12 GHz. However, it should be noted that it likely originates from aerospace or military specifications (MIL-PRF-3933), which often entail higher costs and stricter supply chain controls. Provided cost is not a primary concern and the application does not require military-grade certification, it can serve as a perfect electrical and mechanical replacement for the original part. In low-cost commercial applications, however, its higher price may render it economically impractical as a substitute.

Analysis ID: 54D3-59FB000

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