blacksmith Posted March 23, 2018 Report Share Posted March 23, 2018 Hello, We have some all-SMD, FR4 PCBs which comprise LEDs and Driver components, or some PCBs which have just driver components. These PCBs are either double sided or 4 layer. They are 1.6mm in thickness. The components range from D2PAK FETs down to 0402 resistors, and 4mm by 4mm SMD LEDs. more: du an 17 pham hung We are sometimes finding that these PCBs, when delivered to us, don't work because of dry-jointed LEDs or other components. We find this out because we can often make PCBs work by simply 'dunking' on/near the component pads with a big , wetted soldering iron. more: du an athena kim giang However, we really need a better way to reflow these SMD components. Do you believe a hot-plate would be best?, or some kind of little SMD oven?, or an IR oven? Sometimes the dry-jointed components have connection to a thermal copper pour on the PCB bottom. -But sometimes this is not the case. We are actually wondering if the best & quickest way of doing it could be to simply put the PCB on a cheap hot-plate and waft over the suspect dry-joint components with a "gas gun" soldering tool?..(blowing scorching hot air on the suspect components) more: iris garden Quote Link to comment Share on other sites More sharing options...
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