Placing crystal inside chip

[venkates2218]

I'm using PIC18F4520 for my project.
Shall we place the crystal as like in image..?

 

[betwixt]

On the other side of the PCB to the PIC is fine but remember to connect the ground between the capacitors!

Brian.

 

[KlausST]

Hi,

and even if you place them at the bottom side ... you need space between the packages C and XTAL. You can´t place one above of the other.

Klaus

 

[ZASto]

If the IC is socketed, you can place xtal underneath IC

:wink:

 

[spudboy488]

If the IC is socketed, you can place xtal underneath IC

:wink:

Depending on the height of the components underneath and the type of socket, yes.

Good

Not so good

 

[andre_luis]

Shall we place the crystal as like in image..?

You surelly can, but be aware that quite often SMD components detaches of the soldering pads more easily than PTHs, because they do not have PCB board anchoring by leads, and if the crystal is on the opposite side of the board, it would be expected when the assembled board is handled with the side of the solder down (where you intend to weld the crystal), it would be subjected to the weight of the board in addition to the handling forces (e.g repair, extra welding, cleaning, etc ...).

 

[wwfeldman]

talk to whoever makes your boards and whoever populates them
putting parts on both sides increases cost of board
also need to consider board to board / chassis spacing and mounting
be sure your software handles changing side of board properly