Many of our product lines come equipped with sufficient heat-sinking for operation without the need for cooling fans under lab/bench-top conditions. A “max convection cooled ambient temperature” specification is provided for all products that have heat-sinks integrated into their housings. When operating above that maximum, sufficient airflow will be required to keep the unit within its safe operating temperature range. Consult your Triad RF sales representative or technician for documentation that will guide you on how much airflow will be required for your application.