The 14-pin JTAG header on a PCB, JTAG pads without holes, no other holes on PCB around JTAG connection area. Does it exist a special solderless JTAG connector for connecting JTAG cable to such JTAG header, by connecting spring loaded Pogo Pins to the top of the JTAG pads and fixing them in this position for reliable contact? The main problem is to fix Pogo pins vertically on JTAG pads on PCBs.

enter image description here

  • \$\begingroup\$ Do you need a one-off solution, or your intent is to test billions of these? \$\endgroup\$ – Dzarda Jun 10 '14 at 16:54
  • \$\begingroup\$ Are you sure there aren't holes hiding under the solder? \$\endgroup\$ – Tut Jun 10 '14 at 17:34
  • \$\begingroup\$ There are no holes under JTAG pads in the bottom side of the PCB, and I don't want to drill holes and spoil board. \$\endgroup\$ – sonex Jun 10 '14 at 17:53
  • \$\begingroup\$ It's still better to leave holes and use chisel-tip pogo pins. Self-centering. \$\endgroup\$ – markrages Jun 10 '14 at 20:37
  • \$\begingroup\$ well, the better is solution which is suitable for the actual situation, rather than the theoretical. \$\endgroup\$ – sonex Jun 10 '14 at 22:34

Absolutely. TAG-CONNECT specializes in connectors of these sorts for a variety of different platforms. That approach uses alignment holes with thru pins to keep these things lined up. They make them with and without "feet" that clip them to the board for a no-hands approach, and they offer a retaining clip to help you hold it on for debugging when you don't have the real estate for holes.

They recommend that you adjust solder stencils so as to not put any solder paste on these pogo-pin targets.

enter image description here From http://www.tag-connect.com/sites/default/files/images/ddblock/1tag.jpg

  • \$\begingroup\$ Not sure that they have connector for standard 14-pin JTAG header, and there is no alignment pin holes on PCB around JTAG, how then this connector can be fixed on PCB? This PCB is not designed specifically for Tag-Connect. \$\endgroup\$ – sonex Jun 10 '14 at 16:08
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    \$\begingroup\$ Ahhh, now I understand. I have a feeling that the connector you see is designed to work with pogo pins when the whole shebang is placed in a test fixture w/ some sort of bed of nails tester. Without alignment pins, that really is one of your only options. \$\endgroup\$ – Scott Seidman Jun 10 '14 at 16:20
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    \$\begingroup\$ It could be two clamps mounted on the edges of PCB and which press pogo pins to the JTAG pads. (sort of clamp) \$\endgroup\$ – sonex Jun 10 '14 at 16:41
  • \$\begingroup\$ Check out this: yokowoconnector.com/product/pogopin \$\endgroup\$ – Lior Bilia Jun 10 '14 at 18:07
  • \$\begingroup\$ I mean something like these Solder Cup Spring Pin Header Strips \$\endgroup\$ – sonex Jun 12 '14 at 19:13

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