SMD component repair
SMT technology is now standard in practically all electronic devices. Repairing SMD components requires precise equipment and a safe procedure.
What are SMD repairs?
Removing, replacing and reflowing surface-mounted components on already assembled boards.
Most commonly repaired components
Resistors, capacitors, ICs in QFP/QFN and connectors – often after mechanical or thermal damage.
What equipment is needed?
A hot air station, a soldering station with a fine tip, flux, braid and tweezers. Browse the range under soldering equipment.
The SMD repair procedure
Remove the faulty component with hot air, clean and tin the pads, align the new component and solder it. More on desoldering components.
SMD repairs under a microscope
For very small components (0201, fine ICs) a microscope or magnifier is indispensable.
Common mistakes
Too high a temperature, blowing small parts away and bridges. More in the most common soldering mistakes.
When hot air, when an iron?
Hot air for multi-lead components and ICs, the iron for single connections and rework.
Conclusion
SMD repairs demand precision and good tools. More demanding cases are covered by BGA repairs; find more guides in the ESD Guide.