YAT-9A+

Overview

The YAT-9A+ is a fixed-value, absorptive MMIC attenuator fabricated using Mini-Circuits' highly repetitive IPD process technology. It provides a nominal attenuation of 9 dB across a frequency range from DC to 18 GHz. The component operates with a 50 Ohm impedance and supports a power handling capacity of 1.1 Watts. It is housed in a compact 6-VDFN package with an exposed pad, designed for surface-mount assembly. This RoHS-compliant device ensures stable performance in high-frequency RF applications requiring precise signal level control.

Feature Summary

• Absorptive MMIC design utilizing IPD process technology for consistent attenuation
• Broadband operation covering DC to 18 GHz frequency range
• Compact 6-VDFN surface-mount package with exposed pad for thermal management

Applications

• RF signal conditioning in microwave systems
• Attenuation stages in test and measurement equipment
• Signal level adjustment in satellite communication links

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing to ensure compatibility with your PCB layout and thermal requirements. Confirm that the component meets current RoHS compliance standards as specified by the manufacturer. Cross-reference the Mouser Electronics part number 139-YAT-9A+ or DigiKey listings to validate authenticity and availability through authorized distribution channels before finalizing procurement.

Selection Notes

Select the YAT-9A+ when a broadband, fixed 9 dB attenuation is required up to 18 GHz. Its absorptive nature minimizes reflections compared to resistive types, making it suitable for sensitive RF chains. The 1.1W power rating allows for moderate signal handling. Ensure the 6-VDFN footprint fits within the available board space and that the exposed pad connection is properly implemented for optimal thermal dissipation during operation.

Part Context

This component belongs to Mini-Circuits' YAT series of fixed attenuators, which are built on advanced MMIC processes. The series offers various attenuation values optimized for high-frequency performance. The YAT-9A+ specifically addresses needs for mid-range attenuation in wideband applications, complementing other models like the YAT-4A+ and YAT-10A+ within the same product family.

Replacement Considerations

For direct functional substitution, consider the YAT-10A+ if a slightly higher attenuation value is acceptable, or the YAT-4A+ for lower attenuation. Both share similar MMIC construction and broadband characteristics. Verify that any alternative maintains the 50 Ohm impedance and compatible power handling specifications to ensure system integrity without redesigning the surrounding circuitry.