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8 years ago.
PCB Layout - Best way to hand solder under pads
When I entered my question there were some questions in forum, I can't find some answers suit for my question so I post my quetion and the situation is following: currently i'm drawing a pcb board in Eagle. Can't get a viable solution to allow people easy handsolder this component (WS2812B). I will have 60 of this in the PCB, and i like to use them instead of RAW LED(It's ic chip:http://www.kynix.com/Detail/738157/LED.html) because it already contains the capacitor and resistor, so it will spare 60x4 solder joints. Also i find the price lower than source led + capacitor + resistor.
PCB is to be hand soldered like a KIT. No autoplacement machines.
My main ideia is place them at top layer and do vias to solder from bottom layer. Is it viable or there are better solutions?
Thanks all guys.
Leadless parts are a headache. I have successfully used large vias and soldered from the back side as you suggest. I also sometimes will extend the pad so it goes beyond the part, this way you can get good heat on the pad with an iron. Other option of course is reflow. You could provide a stencil. Are those metal core PCBs? Looks like they aren't but metal core parts would require careful planning. Hard to solder by hand because they suck all the heat away. None of these options are good for a kit. You could build an adapter PCBs that's easier to hand solder and get the leds professionaly assembled on the adapter board.
posted by Graham S. 03 Nov 2017