LCAT1002-01 Replacement: AT-101V, M3933/30-03N

Original Part

LCAT1002-01

L-com

RF Attenuators 1dB 0 Hz ~ 3 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 The AT-101V is a fully qualified drop-in replacement for the original LCAT1002-01. Its core electrical specifications—1 dB attenuation, 50Ω impedance, and 2W power handling—along with its mechanical interface (SMA In-Line Module form factor) are identical to the original part. The key difference lies in its operational frequency range, which is extended to 18 GHz, significantly surpassing the original part's 3 GHz limit. Within the original design's required band of 3 GHz and below, the AT-101V's performance is fully matched with margin. This variance does not present a substitution barrier; instead, it provides the system with potential headroom for higher-frequency performance. This constitutes a "backward-compatible" performance upgrade.

2. M3933/30-03N Substitution Conclusion The M3933/30-03N also meets the electrical and mechanical requirements for replacing the original LCAT1002-01. Similar to the AT-101V, its primary differentiating parameter is frequency range, which is further extended to 32 GHz. This wider bandwidth likely implies a more refined internal design and materials to ensure performance at very high frequencies. For applications originally operating within 3 GHz, this difference is inconsequential, making it a viable high-performance alternative. From a purely technical standpoint, it is a feasible substitute with significant performance margin. However, a cost-benefit analysis is warranted: the premium paid for its ultra-wideband capability may be unnecessary for the intended application. Therefore, while technically sound, its commercial viability depends on whether the associated cost premium is acceptable.

Analysis ID: 7F8D-9BA9000

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