M3933/30-21S Replacement: AT-110V, 32AS102-K10S3

Original Part

M3933/30-21S

Amphenol SV Microwave

RF Attenuators 10dB 0 Hz ~ 32 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

AT-110V

Hirose Electric Co Ltd

RF Attenuators 10dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

32AS102-K10S3

Rosenberger

RF Attenuators 10dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. AT-110V Substitution Conclusion The AT-110V matches the original part M3933/30-21S in all key electrical parameters (10 dB attenuation, 2W power handling, 50Ω impedance, SMA interface). However, its operational frequency range (0–18 GHz) is only about 56% of the original part’s range (0–32 GHz), which is the most critical difference. If your application does not exceed 18 GHz, the AT-110V can serve as a direct, pin-compatible substitute. However, if the system operates within the 18–32 GHz band, the AT-110V will not function due to insufficient bandwidth and may introduce unpredictable signal distortion. In such cases, it is not a viable replacement.

2. 32AS102-K10S3 Substitution Conclusion The situation with the 32AS102-K10S3 is highly similar to that of the AT-110V. Its core electrical specifications (10 dB, 2W, 50Ω) and mechanical package (SMA in-line module) align with the original part. Nevertheless, it shares the same fundamental limitation: a significantly lower frequency ceiling (18 GHz) compared to the original (32 GHz). For RF links operating below 18 GHz, the 32AS102-K10S3 can functionally replace the original part. However, once signal frequencies enter the Ku-band (~18–26.5 GHz) or Ka-band (~26.5–40 GHz), this part will fail completely due to severe performance degradation. Therefore, its suitability as a substitute strictly depends on the application frequency band.

Analysis ID: 2DC0-036C000

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