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I'm trying to include a micro SD card slot in a project I'm working on and I'm having a little trouble with the datasheet. Unfortunately I don't read japanese.

Just wondering what the text says in the 3 Shaded boxes on page 2:

enter image description here

https://www.molex.com/pdm_docs/sd/5031821852_sd.pdf

Can I run PCB tracks under the shaded region back to my processor?

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  • \$\begingroup\$ Now I wonder what パターン is supposed to be. "Part" doesn't quite fit. \$\endgroup\$ – Simon Richter Jun 14 '18 at 13:56
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    \$\begingroup\$ I remember having had to guess that exact same thing... I don't clearly remember what my conclusions were, though. Certainly something along the lines of "Damn molex, lemme get that from another manufacturer"... \$\endgroup\$ – dim Jun 14 '18 at 14:17
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    \$\begingroup\$ @SimonRichter "パターン" is "pattern". \$\endgroup\$ – Falken Jun 14 '18 at 15:14
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    \$\begingroup\$ Wherever possible, it's best to have the physical part in hand when you're designing the board. In theory the data sheet should be enough. In practice, even without a language issue, you're better off with the sum awareness of what the vendor wrote, and what you can see with your own eyes. \$\endgroup\$ – Chris Stratton Jun 14 '18 at 15:20
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    \$\begingroup\$ By the way there is a Japanese language stack exchange japanese.stackexchange.com where there might people who can help \$\endgroup\$ – user13267 Jun 15 '18 at 3:04
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Google translate on your phone can do this:
enter image description here

  • Parts prohibited area (部品搭軾禁止エリア)
  • Pattern prohibited area (パターン禁止エリア)
  • Soldering prohibited area (半田付け禁止エリア)
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    \$\begingroup\$ So in other words: "Keepout"... \$\endgroup\$ – brhans Jun 14 '18 at 14:19
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    \$\begingroup\$ How do you know what phone the OP has? \$\endgroup\$ – PlasmaHH Jun 14 '18 at 14:23
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    \$\begingroup\$ @PlasmaHH phone isn't really relevant. Web google translate will do it too - there's a handwriting input method so you can just write the characters in and it will translate them. Getting the stroke order mostly correct is all you really need to know there. \$\endgroup\$ – J... Jun 14 '18 at 19:10
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    \$\begingroup\$ @J... lol if the OP doesn't know Japanese, how in the world do you think they'll be able to get the stroke order correct? I'm learning Japanese and I'd still be guessing. \$\endgroup\$ – Ben Sandeen Jun 14 '18 at 21:50
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    \$\begingroup\$ @PlasmaHH What makes you think he knows what phone the OP has? \$\endgroup\$ – bye Jun 15 '18 at 12:50
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Disclaimer: I am clueless about EE, but read Japanese well enough to look this up.

Black box: 部品搭載禁止エリア = "components/parts-loading prohibited area" (don't put stuff here, I assume).

Diagonal lines: パターン禁止エリア = "Pattern prohibited area" (I don't know what "pattern" refers to in this context, but don't do it there).

Diamond box: 半田付け禁止エリア = "solder-attaching prohibited area" (don't solder anything here). 半田 (handa) is "solder" in case you see that elsewhere.

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    \$\begingroup\$ "Pattern" possibly "traces?" \$\endgroup\$ – JRE Jun 14 '18 at 16:27
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    \$\begingroup\$ @AliChen Thanks for the correction, you correct! It seems likely to me the word "pattern" here refers to the land pattern aka the footprint. This spec sheet, for instance, refers to it both as パータン and ランドパターン. \$\endgroup\$ – undercat Jun 15 '18 at 2:18
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In this micro-SD socket the spring contacts are located at the bottom of footprint, and during card insertion they may touch the PCB surface. Therefore there is a chance that PCB protective layer will be compromised over time, and the contacts will touch traces, if any. Therefore the manufacturer recommends to leave the shaded area without routing any signal traces or ground pours.

The black area is around the insertion detect contact, which moves sideways, so keep other components out of that area.

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