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I am using a JST company's B2P-VH connector. I could not decide how i can place it to the edge of the PCB. Do you have any comments whether at the photo (1) or (2) is correct? Thank you so much.

You can reach the datasheet here.

enter image description here

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  • \$\begingroup\$ What plug do you use? \$\endgroup\$ – Janka Feb 1 '18 at 12:59
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    \$\begingroup\$ Who voted to close this? I see a valid question with valid answers, based on technical merits-not opinions. \$\endgroup\$ – user105652 Feb 1 '18 at 21:21
  • \$\begingroup\$ This question is ridiculous, there is no way to correctly determine which way is better because it is application dependent. \$\endgroup\$ – Voltage Spike Feb 2 '18 at 16:20
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You have a few things to consider.

Option 1 needs clearance behind it on the board to allow the locking tab to move.

Option 2 suffers from a higher probability the locking tab will break off due to catching on something or pulling sideways on the cable. However it does give the pins a little protection when the board is being handled. You also need to ensure there is room to unlock it when the board is assembled in wherever it is going.

If neither of those is a problem, you can chose whichever one you think looks best.

A different concern you may not have considered is, if, in the future, you decide to switch to the 90 Degree version, you will want that pointing off the board. As such you need pin 1 on the correct side, so I would use option 1.

enter image description here

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  • \$\begingroup\$ Yea totally agree. \$\endgroup\$ – Mitu Raj Feb 1 '18 at 15:42
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    \$\begingroup\$ I would one more point. What is being plugged in and how is it oriented. One of the options may lead to twist in the wire for the device being plugged. \$\endgroup\$ – R.Joshi Feb 1 '18 at 16:06
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    \$\begingroup\$ Option 1. Just for the 90 degree replacement option. \$\endgroup\$ – D Duck Feb 1 '18 at 16:21
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    \$\begingroup\$ @Harper I am puzzled at your puzzling. It's a right-angle connector. It would plug into the same holes as the vertical version shown in the OP's post, but would point out the side of the board instead of straight up. \$\endgroup\$ – DerStrom8 Feb 1 '18 at 18:45
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    \$\begingroup\$ @DerStrom8 ah then, I am depuzzled. \$\endgroup\$ – Harper - Reinstate Monica Feb 1 '18 at 18:48
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It really doesn’t matter which way you put it. What is important is what is next to it that could block engaging the plug or reaching the release on the plug to disconnect it. Your first thought might be to place the latch to the edge of the board but if it is a tight fit into the chassis, you might not be able to get a finger in to press the release.

I worked on a design that placed a similar but larger connector at the edge of the board but when the board was placed into the chassis, it was very difficult to disconnect. My first change request for the PCB was to spin the connector 180 degrees.

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    \$\begingroup\$ So, you mean the (2) option is better? Thank you. ibb.co/b3t33m \$\endgroup\$ – bieaisar Feb 1 '18 at 13:25
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    \$\begingroup\$ No, in my case, it was originally (2) but the chassis Wall was too close so we switched to (1). But if you have a tall component or another connector on the other side and the chassis wall is further away, (2) might be better. It all depends on what else is near it. \$\endgroup\$ – DoxyLover Feb 1 '18 at 17:51
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I think there isn't a "correct" placement for this connector. Personally I would prefer (1) because it looks more easy to fit.

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Neither of your options is stronger or weaker than the other. Think, how are you going to disconnect a cable without using any violence? Be sure that you have room to do it. Designer's nose start easily to attract serviceman's fist if this is not thought.

You can quadruple that attraction by making some deadlocks: Part A cannot be taken off before part B is out of the way. Part B is not movable before A is out of the way.

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Very good answers, but there is one additional factor to get your design intent into practice. If you put some clue into your silkscreen for the part to be stuffed that indicates the orientation of the locking tab, you stand a much higher chance of getting what you want here. I only say this because the attached jpg does not seem to show that. (unless it is hidden by the part, which would make it hard to verify, as I would be demonstrating here)

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