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1. The number one rule of rework is patience. Whether reworking through-hole or surface-mount devices, take time to perform the task properly. An impatient operator can turn a simple rework operation into a major repair or scrap. Observe complete solder melt before trying to remove the component.
2. Before starting rework, make sure all of the tools and equipment needed are available at your facility. Do not invite failure; even the most highly trained and experienced personnel are unable to perform acceptable rework without the proper tools.
3. Do not put any downward pressure on the pad surface. Having the soldering iron temperature set too low will cause the connection to heat slowly. The operator then bears down on the iron tip to help the connection heat faster. Typically, the soldering iron tip temperature should be set between 600 and 700[degrees]F. An oxidized iron tip is another culprit; it causes the tip to transfer heat inconsistently and in some cases not at all. Again, the operator's tendency is to bear down on the tip. Maintaining a clean, well-tinned tip will help improve the transfer of heat. Remember, nothing solders like solder.
-Training Department, Soldering Technology
International, [email protected]
4. Verify the...