LCAT1006-03 Replacement: AT-103V, M3933/30-07N

Original Part

LCAT1006-03

L-com

RF Attenuators 3dB 0 Hz ~ 18 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

M3933/30-07N

Amphenol SV Microwave

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

1. AT-103V Substitution Conclusion The AT-103V is a fully viable direct substitute for the original LCAT1006-03, as it matches all key electrical parameters (3dB attenuation, 2W power rating, 50Ω impedance) and mechanical interface (SMA In-Line Module). The operational frequency range for both remains DC-18GHz. The primary difference lies in the manufacturer, which has changed from L-com to Hirose Electric. This shift may introduce variations in the supply chain, specific manufacturing processes, and quality control details. However, for general RF applications operating at or below 18GHz and under 2W power, this brand difference typically does not impact functionality or performance, allowing for direct interchangeability.

2. M3933/30-07N Substitution Conclusion The M3933/30-07N is an ideal substitute that not only meets but exceeds the specifications of the original LCAT1006-03, offering enhanced performance margins. Its primary technical advantage is the extension of the upper frequency limit from 18GHz to 32GHz. This part employs a more refined design and superior materials to maintain excellent attenuation accuracy, VSWR, and stability at very high frequencies. For applications originally designed for operation below 18GHz, this substitution provides higher performance headroom and potentially superior high-frequency characteristics. It maintains the same 2W power rating and SMA interface, ensuring direct mechanical and electrical compatibility.

Analysis ID: C498-5F81000

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