| General > General Technical Chat |
| Are 1.6mm PCBs obsolete now? USB-C connectors don't fit. |
| (1/2) > >> |
| Kasper:
I'm looking for a waterproof USB-C connector for an 8 layer PCB. Wanted thru hole pins but they all have short pins. Longest I've found is 1.0mm long pins. Is no one using 1.6mm PCBs anymore? What is the benefit of thinner PCBs, aside from the obvious desire to reduce product size by 1mm? |
| wraper:
Those pins are not supposed to necessarily protrude from an opposite side of PCB. Even though there are TH mounting pins for more mechanical strength, it's still an SMT connector soldered with SMT process only. |
| nctnico:
Also think about signal integrity where SMT is better compared to through hole. For as long as the metal tabs of the housing can be soldered into a hole for mechanical stability, I'm happy. |
| Kasper:
Datasheets are recommending thin PCBs. PCB thickness 0.6mm https://www.digikey.ca/en/products/detail/amphenol-cs-fci/10164986-00011LF/18443708 PCB thickness 0.6mm to 1.2mm https://www.digikey.ca/en/products/detail/cui-devices/UJ31-CH-G-SMT-TR-67/12702600 |
| wraper:
On thicker PCB it may be hard to apply enough paste to fill the hole only partially occupied by a pin. If you do 1.6mm PCB, it would be better to use one with SMT type functional pins as providing enough paste for mounting tabs with Pin-in-Paste technology is much easier and solder preforms can be applied too. Such connectors are generally used in portable devices like phones where PCB thickness usually is on lower side. If you look on desktop PC hardware, it's generally 1.6mm and any cards that are put into slots must be 1.6mm to fit properly. |
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