A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the RF signal traces short and away from the power plane to minimize noise and radiation.
Follow the recommended biasing circuit in the datasheet, and ensure the voltage supply is stable and well-regulated. The recommended bias point is Vd=2.5V, Vg=0.5V, and Id=20mA.
The maximum operating temperature for the CHE1270-QAG/20 is 125°C. However, it's recommended to operate the device within the recommended temperature range of -40°C to 85°C for optimal performance and reliability.
Handle the device in an ESD-protected environment, and use ESD-protective packaging and tools. Ground yourself to a common point before handling the device, and avoid touching the pins or leads.
Store the device in a dry, cool place, away from direct sunlight and moisture. The recommended storage temperature range is -40°C to 30°C, and the relative humidity should be below 60%.