I am thinking of designing a PCB for $2 fab at JLCPCB for the TPA6120A2.
I was not happy with the board I bought online and thus I have been researching the various TPA6120A2 projects mentioned at DIYAUDIO and other online sources. (I have seen various TPA6120A2 projects with buffers plus a number of composites using the TLE2071 or OPA2132 or OPA1602.)
So the questions are:
1. Does anyone have a well done KiCad footprint and symbol for the TPA6120A2DWPR? (It is an extended part at JLCPCB.)
2. Has anyone ordered a SMT board with assembly including a TPA6120A2DWPR at JLCPCB? If so I would be interested in hearing any advice/experience.
I am particularly concerned about the thermal pad/e-pad/thermal vias and the SMT stencil and SMT assembly.
I was not happy with the board I bought online and thus I have been researching the various TPA6120A2 projects mentioned at DIYAUDIO and other online sources. (I have seen various TPA6120A2 projects with buffers plus a number of composites using the TLE2071 or OPA2132 or OPA1602.)
So the questions are:
1. Does anyone have a well done KiCad footprint and symbol for the TPA6120A2DWPR? (It is an extended part at JLCPCB.)
2. Has anyone ordered a SMT board with assembly including a TPA6120A2DWPR at JLCPCB? If so I would be interested in hearing any advice/experience.
I am particularly concerned about the thermal pad/e-pad/thermal vias and the SMT stencil and SMT assembly.
An idea for the thermal pad:
I've used in 4 versions now with success, put a large plated hole in the middle, about 3mm, connected to GND.
Before you solder the TPA on, slighly wet the bottom thermal pad. Solder the TPA on, than, turn the PCBA upside down and fill the big hole with solder, making sure you wet the TPA. Leaving a big "plug", soldered to the thermal pad.
This conducts heat very well, at least as good as a bunch of vias.
JG
I've used in 4 versions now with success, put a large plated hole in the middle, about 3mm, connected to GND.
Before you solder the TPA on, slighly wet the bottom thermal pad. Solder the TPA on, than, turn the PCBA upside down and fill the big hole with solder, making sure you wet the TPA. Leaving a big "plug", soldered to the thermal pad.
This conducts heat very well, at least as good as a bunch of vias.
JG
