XS1-L2
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leon_heller
- XCore Expert
- Posts: 546
- Joined: Thu Dec 10, 2009 10:41 pm
- Location: St. Leonards-on-Sea, E. Sussex, UK.
I once had a mini-stencil made just for a Telit GE863 GSM/GPS BGA module on a prototype board. The rest of the parts were assembled manually. I've still got the mini-stencil, somewhere.
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lilltroll
- XCore Expert
- Posts: 956
- Joined: Fri Dec 11, 2009 3:53 am
- Location: Sweden, Eskilstuna
I received 2 samples of the L2 today.
What do you think Leon, could a stencil, soldering paste and a oven/hot air fasten the device ?
What do you think Leon, could a stencil, soldering paste and a oven/hot air fasten the device ?
Probably not the most confused programmer anymore on the XCORE forum.
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leon_heller
- XCore Expert
- Posts: 546
- Joined: Thu Dec 10, 2009 10:41 pm
- Location: St. Leonards-on-Sea, E. Sussex, UK.
It should be OK. I'll get mine assembled by a company I've used before; It'll only cost me £30 for a couple of them, if I supply a stencil. I get free stencils from my PCB supplier.
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lilltroll
- XCore Expert
- Posts: 956
- Joined: Fri Dec 11, 2009 3:53 am
- Location: Sweden, Eskilstuna
You can buy metal stencils, mylar and other plastic material stencils,
and even tapes like this below:
IhUGXEom6IM
and this solution where you keep the tape on the PCB
PRO03Jv3qRo
What would a appropriate thickness be of a common stencil for the L2 device to apply the correct amount of soldering paste ?
and even tapes like this below:
IhUGXEom6IM
and this solution where you keep the tape on the PCB
PRO03Jv3qRo
What would a appropriate thickness be of a common stencil for the L2 device to apply the correct amount of soldering paste ?
Probably not the most confused programmer anymore on the XCORE forum.
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GeorgeIoak
- Active Member
- Posts: 56
- Joined: Wed May 19, 2010 9:42 pm
If you guys are interested in getting some boards soldered I can help as I have access to the proper equipment. I am however located in California so shipping may cost more than it's worth but I thought I would offer anyway.
@lilltroll, I do make somewhat regular shipments to Sweden to the Gothenburg area so perhaps I could combine shipments which would eliminate the shipping cost.
What type of boards are you designing?
@lilltroll, I do make somewhat regular shipments to Sweden to the Gothenburg area so perhaps I could combine shipments which would eliminate the shipping cost.
What type of boards are you designing?
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kster59
- XCore Addict
- Posts: 162
- Joined: Thu Dec 31, 2009 8:51 am
What's the recommended Pad size on the L2 in the given layout?
Altium calculates 0.3x.0.48 but the pads look square (0.3x0.3 I assume) in the images people post.
Thanks.
Altium calculates 0.3x.0.48 but the pads look square (0.3x0.3 I assume) in the images people post.
Thanks.
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leon_heller
- XCore Expert
- Posts: 546
- Joined: Thu Dec 10, 2009 10:41 pm
- Location: St. Leonards-on-Sea, E. Sussex, UK.
They are 0.30 mm square.
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kster59
- XCore Addict
- Posts: 162
- Joined: Thu Dec 31, 2009 8:51 am
Shouldn't there be room for a fillet or do these dual row QFNs not need it/not recommend it on the pads?
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kster59
- XCore Addict
- Posts: 162
- Joined: Thu Dec 31, 2009 8:51 am
I played with the layout a bit and was able to escape all pins using:
-2 layer board
-18mil diameter vias with 8mil via holes
-7mil/7mil spacing
-2 layer board
-18mil diameter vias with 8mil via holes
-7mil/7mil spacing
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dave1
- Newbie
- Posts: 1
- Joined: Sat Aug 20, 2011 4:10 pm
Hi All,
I'm looking at using the XS1-L2 for a project I'm working on and was looking for a EAGLE library containing it. I have found a few examples on the forums but all seem to be first passes. I have found a library by Bob Starr (http://www.bobstarr.net), Has any one on here tried it or does any one have a known good part they would be willing to share? (or does anyone know of one in a project or on the forums that I have missed?)
I'm looking at using the XS1-L2 for a project I'm working on and was looking for a EAGLE library containing it. I have found a few examples on the forums but all seem to be first passes. I have found a library by Bob Starr (http://www.bobstarr.net), Has any one on here tried it or does any one have a known good part they would be willing to share? (or does anyone know of one in a project or on the forums that I have missed?)