Hope I'm not spouting bull here, but a 14mm long 5x2.5mm socket should be ok I reckon.
My wife's laptop develped a dry or (mostly) broken joint on its DC socket. It worked but ran incredibly hot, so it must have been passing some current with its 19V (supply rated at 3.42A). Re-soldering the connection (PITA to dismantle a frail notebook style laptop) cured it.
Some of the PCB mounting sockets do seem to make a high quality connection, the plug needing a good push fit to fully engage the outer connector. Another I bought dies seem a bit sloppy and the plug has to be treated with repect if it isn't to come out.
Good luck
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