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Messages 981 - 1011 of 1228   Oldest  |  < Older  |  Newer >  |  Newest
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981
QFN (Quad Flat No-lead) is another term for MLF (Who knows.) Check in the files for the MLF library. It covers several 0.5mm pitch parts. Microsuffer...
microsuffer
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May 1, 2009
4:40 pm
983
Does anyone could tell me how to find a transformer 220v to 12v a.c. 0.5VA footprint for layout plus v.9?...
xavilv
Offline
May 1, 2009
9:11 pm
984
There are probably quite a few transformers with different footprints that can do 220v to 12v a.c. 0.5VA. Do you know the part number and manufacturer for...
Nick Alexeev
kender_a
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May 1, 2009
9:14 pm
985
I've got the footprint from one of our members (kudos, Ovidiu), and at the same time I've made one myself. Both are in the file EuroCard.lld (uploaded into...
Nick Alexeev
kender_a
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May 2, 2009
2:45 am
986
I had earlier mentioned the MLF library in response, but the part is a QFP, not QFN. The correct library for that is the Demo library QUAD.LLB. Oops....
microsuffer
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May 2, 2009
6:41 pm
987
Thanks for your reply, Nick, The manufacturer is Block, and the part number is "12 V: VB 0,35/1/12" or a similar one. Xavier....
xavilv
Offline
May 2, 2009
6:41 pm
988
Thanks your a good man. Jim ________________________________ From: microsuffer <microsuffer@...> To: OrCADexchange@yahoogroups.com Sent: Saturday, May 2,...
JCullins
jtcullins
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May 2, 2009
7:54 pm
989
None of those would fit either too small or too large . Here is one I built. How does it look to you. I printed it out and the part fits perfectly. .08MM lead...
JCullins
jtcullins
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May 3, 2009
4:35 am
990
Hi, is there some table or rough equation that determines via current rating depending on via hole diameter?...
rayer314
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May 4, 2009
4:58 pm
991
It depends on what you are solving for. Temperature rise with current, inductance, capacitance, impedance, or voltage drop? Here is one calculator:...
tcwaggoner
terrencewagg...
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May 4, 2009
6:25 pm
992
Non text portion removed so I didn't get to see the result. However, in QUAD there is the QUAD.80M/44/WG12.00 which matches the dimensions on the data sheet....
microsuffer
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May 4, 2009
8:30 pm
993
Thanks I will have a look at it. I don't fully trust my part building ability. (:-) Jim ________________________________ From: microsuffer...
JCullins
jtcullins
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May 4, 2009
8:46 pm
994
You are absolutely correct fits much better that the one I made. Thanks Jim www.soundlogicus.com Plasma THC-300 Serial Spindle Speed control ... From:...
JCullins
jtcullins
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May 4, 2009
10:00 pm
995
... Thanks, nice calculator. I'm interesting about normal working current let's say for 20C temp rise and maximum current when the via will burn out. I...
rayer314
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May 5, 2009
2:09 pm
996
First, you didn't mention which Polyfuse. Assuming a Littlefuse 2016-1.5, a part that will sustain 1.5A at 23C, the data sheet seems to say it will take 100K...
microsuffer
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May 6, 2009
5:40 pm
997
Poly fuses are very slow devices. If 3A were placed on the 1.5A poly fuse it would take about a second for it to open. The copper in the via is fast to heat...
4Larry Walker
redbeard4545
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May 6, 2009
5:40 pm
998
Hello, Gud day everyone.. would like to know if anyone here happens to have a PCB template for Eagle system ETS-364 loadboard design. or worst case the...
louiboy2002
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May 6, 2009
5:41 pm
999
... I know they are very slow but is there some better and cheap solution when burning fuses are not acceptable and electronic limiters are "complex" and...
rayer314
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May 6, 2009
11:49 pm
1000
So, you have a population of boards that have to be lived with. Drill out the via and put in a wire? And where is the fault current going? Is it a reasonable...
microsuffer
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May 10, 2009
4:39 am
1001
I have written beginners's tutorial for OrCAD schematics. http://referencedesigner.com/tutorials/orcad/orcad_01.php I am looking for members' feedback about...
for_si2003
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May 10, 2009
4:41 am
1002
Dear All Could you provide me with the layout footprint of 80-Lead Plastic Thin Quad Flatpack (PT) 12x12x1 mm Body, 1.0/0.10 mm Lead Form (TQFP) for PIC18F8722...
orange1470
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May 12, 2009
8:31 pm
1003
hi members I am electronic engineer.i am working in orcad for last three years and hope these groups are useful to share the knowledge of everyone Regards ...
ARUN Kumar
arunsellappan85
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May 13, 2009
1:57 am
1004
Hi, I will upload the footprint but give me 3 days time. working with tight schedule....
nayaktel
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May 13, 2009
5:53 am
1005
Hi Ala', OrCAD Layout comes with a standard library called QUAD. It has eight (8) 80-pin footprints that look like QFP. They have different dimensions...
Nick Alexeev
kender_a
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May 13, 2009
6:01 am
1006
Hi Mr.Nayaktel Thannk you very much for your reply I will wait you. Thanx again ... Ala'...
orange1470
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May 13, 2009
5:03 pm
1007
Hello, I'm looking for the layout file (.llb) of the SC70-5 package. I've been through most of the libraries I found here with no luck. Could you please let me...
romain.pelard
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May 14, 2009
10:30 pm
1008
Hi, Please send me datasheet of the Package you want...
nayaktel
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May 15, 2009
9:36 pm
1009
Hi all... If I understand correctly, this group is not for Orcad/Allegro systems. I cannot use your libraries. If you put the footprints into a layout, I could...
aj_1x
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May 17, 2009
4:36 pm
1010
Folks, What end-mill diameters fabs typically used for routing (milling) the outline of the PCB? I have a PCB with an inside angle. I don't want to make an...
Nick Alexeev
kender_a
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May 17, 2009
6:38 pm
1011
Ask the fab house you intend to use. Most will have a typical tool. Microsuffer...
microsuffer
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May 17, 2009
9:54 pm
Messages 981 - 1011 of 1228   Oldest  |  < Older  |  Newer >  |  Newest
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