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I don't have these locally so I have to order from abroad: enter image description here

My question is would 7mm x 7mm dimensions of plastic core affect spacing between pins? I can't find 7.5mm x 7.5mm size to replace failed switch but I can find 7mm x 7mm and 8.5mm x 8.5mm and as long as tolerance + / - 0.5mm - 1mm will not affect spacing of pins I think I am good.

UPDATE: Here's one that I need to replace on IC board.

enter image description here


UPDATE: Here's the datasheet I was provided:

enter image description here

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    \$\begingroup\$ The datasheet should tell you the pin spacing \$\endgroup\$
    – PlasmaHH
    Commented Nov 16, 2016 at 16:07
  • \$\begingroup\$ Can you attach a link to the datasheet, please? \$\endgroup\$
    – 12Lappie
    Commented Nov 16, 2016 at 16:18
  • \$\begingroup\$ I can't find one. This item is sold in online store and very short description is what they have. I added photo of switch on IC. \$\endgroup\$
    – Boris_yo
    Commented Nov 17, 2016 at 7:33
  • \$\begingroup\$ If you need a datasheet and there is none, then no sale. If you want to buy it, then good luck. \$\endgroup\$
    – Wesley Lee
    Commented Nov 17, 2016 at 7:55
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    \$\begingroup\$ A picture of a table is not a datasheet, it is a picture of a table. A actual datasheet would have at minimum a proper mechanical drawing, and information beyond what one can get from the switch and a ruler. \$\endgroup\$
    – Connor Wolf
    Commented Dec 2, 2016 at 6:47

3 Answers 3

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You CANNOT assume pin spacing from case size. You MUST refer to the manufacturer's data sheet which will show EXACTLY what is the pin spacing, pin/hole size, and connection pinout. DO NOT ASSUME anything, especially if you need compatibility or design of a PC board.

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  • \$\begingroup\$ I can't find one. This item is sold in online store and very short description is what they have. I added photo of switch on IC. \$\endgroup\$
    – Boris_yo
    Commented Nov 17, 2016 at 7:33
  • \$\begingroup\$ Hi Richard. I was provided datasheet. I have updated original question. \$\endgroup\$
    – Boris_yo
    Commented Dec 2, 2016 at 6:28
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    \$\begingroup\$ That is just an extracted summary of SOME of the specification parameters. A proper data sheet is typically several pages and includes detailed drawings of the pin spacing, etc. If this is you only option, then you have little choice but buy one (or more) and measure or try it for yourself. If you can't find the REAL manufacturers data sheet, then you have NO WAY of answering your question definitively. \$\endgroup\$
    – Richard Crowley
    Commented Dec 2, 2016 at 6:30
  • \$\begingroup\$ How hard it would be for someone who soldered only once in their life to have this switch (top photo) soldered to small PCB (photo below it)? \$\endgroup\$
    – Boris_yo
    Commented Dec 2, 2016 at 15:16
  • \$\begingroup\$ Do you have a clean, empty board? Or do you have to remove the faulty switch first? Even soldering to a new, clean board is not a simple job for a beginner. And removing a bad switch will likely be very challenging for a beginner. Do you know anyone in your neighborhood who knows how to solder? \$\endgroup\$
    – Richard Crowley
    Commented Dec 2, 2016 at 22:16
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What is the pitch (spacing) of the pins of the switch you are trying to replace? Which should also be the pitch of the holes in the PC board, etc. A proper data sheet shows detailed mechanical drawings including pin spacing patterns, etc. etc. For example, here is a 7mm x 7mm, 6-pin switch with mechanical drawings. It may or may not match YOUR switch:

enter image description here

It shows that the adjacent pins are 2mm apart, and the two opposite rows are 5mm apart.

Ref: https://www.alibaba.com/product-detail/Latching-7x7mm-Mini-Tactile-Push-Button_60227167979.html

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These "look like" standard DIP 6 pins 0.1 " spacing 0.3" 7.62mm pitch enter image description here

Although some other species of DIP may be 2mm vs 2.54mm pitch especially if they have round pins. But these are std flat lead-frames.

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