23 HOW TO REPLACE AFLAT PACKAGE IC23.1. Preparation•••• PbF (: Pb free) Solder•••• Soldering IronTip Temperature of 700°F ± 20°F (370°C ± 10°C)Note: We recommend a 30 to 40 Watt soldering iron. Anexpert may be able to use a 60 to 80 Watt iron wheresomeone with less experience could overheat and damagethe PCB foil.•••• FluxRecommended Flux: Specific Gravity → 0.82.Type → RMA (lower residue, non-cleaning type)Note: See ABOUT LEAD FREE SOLDER (PbF: Pb free)(P.4).23.2. Procedure1. Tack the flat pack IC to the PCB by temporarily solderingtwo diagonally opposite pins in the correct positions on thePCB.Be certain each pin is located over thecorrect pad on the PCB.2. Apply flux to all of the pins on the IC.3. Being careful to not unsolder the tack points, slide thesoldering iron along the tips of the pins while feedingenough solder to the tip so that it flows under the pins asthey are heated.23.3. Removing Solder fromBetween Pins1. Add a small amount of solder to the bridged pins.2. With a hot iron, use a sweeping motion along the flat part ofthe pin to draw the solder from between the adjacent pads.62KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS
