LAT-3+

Overview

The LAT-3+ is a surface-mount fixed attenuator manufactured by Mini-Circuits, designed for radio frequency applications. It provides a nominal attenuation of 3 dB across a wideband frequency range from DC to 2500 MHz. The component operates with a characteristic impedance of 50 ohms and features a maximum voltage standing wave ratio (VSWR) of 1.5. It is housed in an SOT143-4 package and supports power handling up to 500 mW. The device functions reliably within an operating temperature range of -55°C to +85°C.

Feature Summary

• Wideband operation covering DC to 2.5 GHz
• Excellent VSWR performance for signal integrity
• Surface-mount design for compact integration

Applications

• RF signal level adjustment in communication systems
• Impedance matching in microwave circuits
• Test and measurement equipment calibration

Procurement Notes

Verify the manufacturer part number LAT-3+ against official Mini-Circuits documentation to ensure authenticity. Confirm that the SOT143-4 package matches your PCB footprint requirements. Check RoHS compliance status if environmental regulations apply to your production. Ensure the 500 mW power rating suits your circuit's thermal conditions. Validate the DC to 2.5 GHz frequency range aligns with your operational bandwidth needs before ordering.

Selection Notes

Select the LAT-3+ when a precise 3 dB attenuation is required in space-constrained designs. Its surface-mount format facilitates automated assembly processes. The wide frequency response makes it suitable for multi-band applications. Consider the 50-ohm impedance compatibility with your system architecture. Evaluate the thermal performance limits relative to your expected power dissipation levels.

Part Context

The LAT-3+ belongs to Mini-Circuits' LAT series of fixed attenuators, which are engineered for RF and microwave environments. This series offers various attenuation values while maintaining consistent electrical characteristics. The component is part of a broader portfolio of passive RF devices including filters and mixers. Mini-Circuits emphasizes reliability and precision in this product line for industrial and commercial use.

Replacement Considerations

Direct substitutes include other Mini-Circuits models such as LAT-6+ or LAT-7+ if different attenuation values are acceptable. Verify that any replacement maintains the same SOT143-4 package and 50-ohm impedance. Cross-reference datasheets to ensure frequency range and power handling capabilities meet or exceed original specifications.