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Hot-air Station Stabilizes Rework Temps
July 25, 2007 |Estimated reading time: Less than a minute
APEX, N.C. The Weller WHA900 hot-air station from Cooper Hand Tools uses closed-loop feedback control to maintain a set temperature at the nozzle, regardless of airflow rate. A sensor in the nozzle adjusts heat output to stabilize at a pre-selected applied temperature, enabling lead-free and precise rework of surface mount device (SMD) components.
Sensing capabilities monitor temperature, airflow, and setback; internal air is adjustable from 5 to 50 L/min. A hot-air pencil yields 650-W output with temperatures from 50° to 500°C. The pencil is compatible with a range of nozzles.
ESD-safe, Weller systems use a proprietary heating technology, wherein conducted heat from an integral hot plate brings rework components to just below the solder melting point. The unit then directs focused hot air onto component legs, melting the joint and allowing component removal without damage.
Optional accessories include an exchange tool, pencil stand, ESD-safe PCB holder, vaccuum pen, and other tools.