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Having trouble understanding SPDT switch schematic symbol

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akles98 5 years ago

I've never used this manufacturers switches before, so I don't know how to read their schematic symbol for [this switch](https://lcsc.com/product-detail/Toggle-Switches_1P2T-1-5-Switch-6-7mm-2-6mm_C128955.html). I'm assuming that the rectangles correspond to each of the contact pins, so, by that logic, the central rectangle (pin) should be the common contact. I am however not sure of this, so if anyone could assure me that I'm correct, or know what the symbol is actually corresponding to, I would highly appreciate it! I would also like to know what power it can handle, since it doesn't say anything in the datasheet.

Firefox 59.0 Windows 10 EasyEDA 5.4.12

Comments

andyfierman 5 years ago

I have tried but have not been able to make sense of the symbol and to find a better datasheet. I have asked if someone can have a look at a real switch and redraw the symbol.

Chrome 65.0.3325.181 Ubuntu EasyEDA 5.4.12

UserSupport 5 years ago

Hi It is a push button switch. the option as below: ![snipaste_20180514_142916.png](//image.easyeda.com/pullimage/xTl2DwuE0KLpYlEQJluXlYN7SFS8EpEwQlNhtz1X.png)

Chrome 66.0.3359.139 Windows 10

andyfierman 5 years ago

I am still confirming the operation of this switch in both positions and will create a better schematic symbol for it as soon as I know. :)

Chrome 65.0.3325.181 Ubuntu EasyEDA 5.4.12

andyfierman 5 years ago

I have now found some data on this switch: [http://www.smtswitch.com/cp/4/186.html](http://www.smtswitch.com/cp/4/186.html) I am still trying to confirm if this is an SPDT or SPST switch.

Chrome 66.0.3359.139 Windows 10 EasyEDA 5.4.12

andyfierman 5 years ago

I have now found the pages for this part on the HRO website. [http://www.smtswitch.com/cp/4/186.html](http://www.smtswitch.com/cp/4/186.html) [http://www.smtswitch.com/news/zx/882.html](http://www.smtswitch.com/news/zx/882.html) [http://www.smtswitch.com/uploads/soft/150526/1-150526122515.pdf](http://www.smtswitch.com/uploads/soft/150526/1-150526122515.pdf) I have also had an online chat with HRO and they confirm that the part is a SPDT switch that works as shown in my diagram: ![](https://mail.google.com/mail/u/0/?ui=2&ik=ce4b525315&view=att&th=16362deacced36a0&attid=0.1&disp=safe&realattid=ii_jh7ekfd00_16362deacced36a0&zw) I have already clarified the PCB footprint and will update the schematic symbol soon.

Chrome 66.0.3359.139 Windows 10 EasyEDA 5.4.12

andyfierman 5 years ago

Schematic symbol clarified.

Chrome 66.0.3359.139 Windows 10 EasyEDA 5.4.12

andyfierman 5 years ago

For the avoidance of doubt, this is the diagram that I sent to HRO and which they have confirmed is correct for the switch: ![](https://mail.google.com/mail/u/0/?ui=2&ik=ce4b525315&view=fimg&th=16362e16e55a7e4a&attid=0.1&disp=emb&realattid=ii_jh7ekfd00_16362deacced36a0&attbid=ANGjdJ8gBNsGQPfqfTaMiU2xxjJ9ZYlma1TPXAhvGlLm15gdRcVZBwHKGELs3efNeN21Pi1uJaz1vcUF3FI6AVvMa2iAhm5frL5o1bLD1NS5VutIJ9VmbMghGPKKqjk&sz=w1124-h452&ats=1526372948444&rm=16362e16e55a7e4a&zw&atsh=1)

Chrome 66.0.3359.139 Windows 10 EasyEDA 5.4.12

andyfierman 10 months ago

@andyfierman, looks like I forgot to attach the diagram that I sent to HRO and which they have confirmed is correct for the switch: ![image.png](//image.easyeda.com/pullimage/A55pqW5if2iVnRykKErguTEvuRVTlg1Lkmx32oT6.png)

Firefox 113.0 Linux

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