M3933/30-33N Replacement: 32AS102-K20S3, SA3R-20

Original Part

M3933/30-33N

Amphenol SV Microwave

RF Attenuators 20dB 0 Hz ~ 32 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

32AS102-K20S3

Rosenberger

RF Attenuators 20dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

SA3R-20

Fairview Microwave

RF Attenuators 20dB 0 Hz ~ 3 GHz 50 Ohms 2W SMA In-Line Module

1. 32AS102-K20S3 Substitution Conclusion This part is identical to the original part in all key parameters: attenuation value (20dB), power handling (2W), impedance (50Ω), and connector type (SMA in-line). The core difference lies in its upper operating frequency limit of 18 GHz, which is lower than the original's 32 GHz. If your system operates below 18 GHz, this part can serve as a direct replacement with matched performance. However, for systems requiring operation between 18 GHz and 32 GHz, this part is not a viable substitute due to insufficient frequency coverage. Its use in such a scenario would lead to severe degradation or complete failure of the attenuation performance. Therefore, substitution feasibility is highly dependent on your actual operating frequency.

2. SA3R-20 Substitution Conclusion This part matches the original in basic parameters such as attenuation value, power rating, impedance, and interface. However, its upper operating frequency limit is only 3 GHz, representing a significant gap compared to the original's 32 GHz. This device is only guaranteed to meet specifications within the 3 GHz band. For any application operating above 3 GHz, particularly those involving millimeter-wave frequencies, selecting this part as a replacement will result in inaccurate signal attenuation, increased insertion loss, and potential system performance failures. Consequently, it is completely unsuitable as a substitute and is only applicable for narrowband, low-frequency scenarios.

Analysis ID: FDCB-6502000

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