PAT-1+

Overview

The PAT-1+ is a fixed attenuator manufactured by Mini-Circuits, designed for surface-mount technology applications. It provides a nominal attenuation of 1 dB across a wide frequency range extending from DC to 7 GHz. The component operates with a characteristic impedance of 50 Ohms and supports an RF power handling capacity of 1 Watt at a case temperature of +25°C. Power ratings must be derated linearly as the temperature increases up to +100°C. The device features excellent Voltage Standing Wave Ratio (VSWR) throughout its entire operating band, ensuring minimal signal reflection.

Feature Summary

• Wideband operation spanning from DC to 7 GHz
• Excellent VSWR maintained through the entire frequency band
• Surface-mount package configuration for automated assembly

Applications

• RF signal level adjustment in microwave circuits
• Impedance matching networks requiring precise attenuation
• Test and measurement equipment signal conditioning

Procurement Notes

Verify the specific datasheet revision and manufacturing date code upon ordering. Confirm that the application environment remains within the specified thermal limits to ensure the 1 Watt power rating is not exceeded without proper derating. Ensure PCB layout guidelines provided in the official documentation are followed to maintain electrical performance and mechanical stability during soldering processes.

Selection Notes

Select this component when a low attenuation value of 1 dB is required for high-frequency applications up to 7 GHz. Consider the surface-mount form factor for space-constrained designs. Evaluate thermal management requirements carefully, as power handling decreases significantly at elevated case temperatures. Ensure the system impedance matches the 50 Ohm specification to preserve signal integrity.

Part Context

The PAT-1+ belongs to Mini-Circuits' PAT series of fixed attenuators, which are engineered for broadband RF and microwave systems. This series offers various attenuation values while maintaining consistent electrical characteristics across different models. The components are widely utilized in communication systems where stable signal reduction is critical for protecting downstream sensitive components or adjusting signal levels.

Replacement Considerations

Direct substitutes include other Mini-Circuits fixed attenuators such as the PAT-0+ or PAT-3+, depending on the required attenuation value. Cross-manufacturer replacements require verification of footprint compatibility, impedance matching, and frequency response curves to ensure equivalent performance in the existing circuit design.