Libraries for LGA-16 anyone?

The PDF for the  LIS3LV02DLLIS3LV02DL has the pad dimensions for it's footprint You

can make your own quite quickly if no one has one to share.

<test@testnospam.nl> wrote in message

news:deeeq41bkm7ea8j4dm6fr87vbv0360sjiq@4ax.com...

Has anyone a library with the LGA-16 design in it?

 

I'm want to use LIS3LV02DL (STMicroelectronics) or MMA7455L (Freescale

Semiconductor).

 

Anywhere to be found in the libraries??

 

Thank you

Hey, thanks...

I've been trying for the last hours to work that out, but all I have

is a rectangle...

Can I make a pad from a rectangle in stead of using a pad?

I'ts hard to make a rectangle pad with certain dimensions.

I made one from two square pads, grouped them, and tried to copy

them...

Didn't succeed..

Quickly?? Not for me..

Thanks

The PDF for the  LIS3LV02DLLIS3LV02DL has the pad dimensions for it's footprint You

can make your own quite quickly if no one has one to share.

 

 

<test@testnospam.nl> wrote in message

news:deeeq41bkm7ea8j4dm6fr87vbv0360sjiq@4ax.com...

Has anyone a library with the LGA-16 design in it?

 

I'm want to use LIS3LV02DL (STMicroelectronics) or MMA7455L (Freescale

Semiconductor).

 

Anywhere to be found in the libraries??

 

Thank you

set grid to 1mm (pitch from data sheet)

draw the outline in the tPlace layer with wires.

type SMD 0.8 0.5 in command line so that you will have the pad size

defined in the data sheet.

place them where you need them.

be very careful with the top /bottom view to get pin1 in the right place!

check that the solder mask is correct in the board with the

recommendation from the data sheet, there's a way to override the

default size of the mask, but I don't know it.

The package outline is a good start.  Is it correctly centered and the right

dimension of  7.5 by 4.4mm?  I suggest you make the GRID size = .01mm ,

since all of the placement coordinates are at .05mm resolution.  You will

have to scroll in to see the grid, but it makes placement easier.  For the

smd pads you use the SMD button (a red rectangle next to the round green PAD

button).  When you click on the SMD button, an SMD properties bar will

appear in the top menu bar area.  Boxes with "Smd:" "Roundness" and "Angle"

are displayed.  In the "Smd:" box, enter the P1 and P2 dimensions given in

the PDF.  So you should enter 0.975 x 0.65  wrote in message

news:9c3hq41tp95ccof5t39rvv675rrchlnme4@4ax.com...

Hey, thanks...

 

I've been trying for the last hours to work that out, but all I have

is a rectangle...

 

Can I make a pad from a rectangle in stead of using a pad?

I'ts hard to make a rectangle pad with certain dimensions.

I made one from two square pads, grouped them, and tried to copy

them...

Didn't succeed..

 

Quickly?? Not for me..

 

Thanks

 

The PDF for the  LIS3LV02DLLIS3LV02DL has the pad dimensions for it's footprint You

can make your own quite quickly if no one has one to share.

 

 

<test@testnospam.nl> wrote in message

news:deeeq41bkm7ea8j4dm6fr87vbv0360sjiq@4ax.com...

Has anyone a library with the LGA-16 design in it?

 

I'm want to use LIS3LV02DL (STMicroelectronics) or MMA7455L (Freescale

Semiconductor).

 

Anywhere to be found in the libraries??

 

Thank you

Gary is correct.  The copper metal pad is the same size as the pin size T1

and T2.  The solder mask opening is P1 and P2.

"Robert Leavitt" <bb@hotdogdigital.com> wrote in message

news:goa8at$eru$1@cheetah.cadsoft.de...

The package outline is a good start.  Is it correctly centered and the

right dimension of  7.5 by 4.4mm?  I suggest you make the GRID size =

.01mm , since all of the placement coordinates are at .05mm resolution.

You will have to scroll in to see the grid, but it makes placement easier.

For the smd pads you use the SMD button (a red rectangle next to the round

green PAD button).  When you click on the SMD button, an SMD properties

bar will appear in the top menu bar area.  Boxes with "Smd:" "Roundness"

and "Angle" are displayed.  In the "Smd:" box, enter the P1 and P2

dimensions given in the PDF.  So you should enter 0.975 x 0.65 <enter>.

Now you have the correct pad size to place.  Use the Right Mouse Button to

rotate the smd pad before placement when required.

 

There are ways to command an smd pad to be placed at any coordinate, but

start with the basics first.  Let me know if you need furthur help.

 

 

 

<test@testnospam.nl> wrote in message

news:9c3hq41tp95ccof5t39rvv675rrchlnme4@4ax.com...

Hey, thanks...

 

I've been trying for the last hours to work that out, but all I have

is a rectangle...

 

Can I make a pad from a rectangle in stead of using a pad?

I'ts hard to make a rectangle pad with certain dimensions.

I made one from two square pads, grouped them, and tried to copy

them...

Didn't succeed..

 

Quickly?? Not for me..

 

Thanks

 

The PDF for the  LIS3LV02DLLIS3LV02DL has the pad dimensions for it's footprint

You

can make your own quite quickly if no one has one to share.

 

 

<test@testnospam.nl> wrote in message

news:deeeq41bkm7ea8j4dm6fr87vbv0360sjiq@4ax.com...

Has anyone a library with the LGA-16 design in it?

 

I'm want to use LIS3LV02DL (STMicroelectronics) or MMA7455L (Freescale

Semiconductor).

 

Anywhere to be found in the libraries??

 

Thank you

Good  Freescale technical paper on LGA soldering parameters:

http://www.freescale.com/files/32bit/doc/package_info/AN2920.pdf

Thank you all again, will try again this night.

The problem is that I need to learn it and need to have a small PCB by

Tuesday.

Will try my best.

Attached is a library with a correct layout according to the PDF.  According

to the dimensions in the PDF, the soldermask is P1 - T1 = .175  and  P2 - T2

= .150 so the mask is slightly bigger in one direction by .025.  No big deal

but something to note.  Also the outline is slightly enlarged so that the

silkscreen doesn't overwrite the solder area.   I didn't read the stencil

requirements for paste, but I figured you could try to take it from here.

Good luck and have fun!  I do my schematics on paper so I don't have/use the

schematic editor.

<test@testnospam.nl> wrote in message

news:fb3iq4lp02uhaai7r7opr1btpu25dsvd7l@4ax.com...

Thank you all again, will try again this night.

The problem is that I need to learn it and need to have a small PCB by

Tuesday.

 

Will try my best.

Oh my!!!

Thank you so much!

I won't give up, I will try to make a library for all LGA

configurations and share it.

Thanks again!!

Attached is a library with a correct layout according to the PDF.  According

to the dimensions in the PDF, the soldermask is P1 - T1 = .175  and  P2 - T2

= .150 so the mask is slightly bigger in one direction by .025.  No big deal

but something to note.  Also the outline is slightly enlarged so that the

silkscreen doesn't overwrite the solder area.   I didn't read the stencil

requirements for paste, but I figured you could try to take it from here.

Good luck and have fun!  I do my schematics on paper so I don't have/use the

schematic editor.

 

 

<test@testnospam.nl> wrote in message

news:fb3iq4lp02uhaai7r7opr1btpu25dsvd7l@4ax.com...

Thank you all again, will try again this night.

The problem is that I need to learn it and need to have a small PCB by

Tuesday.

 

Will try my best.