FMAT7620-40 Replacement: 32AS102-K40S3, SA18L-40

Original Part

FMAT7620-40

Fairview Microwave

RF Attenuators 40dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

32AS102-K40S3

Rosenberger

RF Attenuators 40dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

SA18L-40

Fairview Microwave

RF Attenuators 40dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. 32AS102-K40S3 Substitution Conclusion Based on core electrical parameters (40dB attenuation, DC-18GHz frequency range, 2W power handling, 50Ω impedance) and physical interface (SMA In-Line Module), the 32AS102-K40S3 is identical to the original part FMAT7620-40, establishing a solid technical foundation for direct substitution. The differences lie in the manufacturer change from Fairview Microwave to Rosenberger. Potential unstated minor variations may exist in internal circuit design, material and processing techniques (e.g., resistor chips, substrate, connector plating), and specific performance metrics (e.g., attenuation accuracy, frequency flatness, VSWR). However, such variances typically fall within the acceptable tolerance range for commercial-grade products of this type. For most general-purpose applications, this part represents a viable and reliable alternative. It is recommended to conduct in-circuit testing prior to bulk replacement to verify compatibility within the specific target system.

2. SA18L-40 Substitution Conclusion The SA18L-40 and the original FMAT7620-40 are both from Fairview Microwave. Their core electrical specifications (40dB, DC-18GHz, 2W, 50Ω) are identical, resulting in a very high feasibility for substitution. The discrepancy lies in the product description "PLUG-JACK SMA SS 1.35," which suggests potential detailed differences in the specific mechanical configuration of its SMA interface (e.g., plug/jack arrangement) or connection mechanism (e.g., 1.35-inch wrench torque) compared to the original part. Nevertheless, it remains within the standard SMA In-Line Module category. As products from the same manufacturer, they typically share highly convergent design philosophies, performance standards, and quality consistency. Therefore, this part is not only a direct parametric substitute but can also be considered a potential upgrade or derivative version of the original part, offering the highest substitution reliability. The only necessary verification is to ensure its interface gender matches the system's connection requirements.

Analysis ID: 9734-01A5000

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