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28 Threads found on Smd Footprint
Hi everyone, I'm doing a footprint of a USB connector like this: 132816 As you can see there is a Land NO.3 which is supposed to be conected to gnd I guess. To do this, I use Snap points and use a solid region (Place->Solid region) My problem is I can't assign a designator like a pin. So I tried to put a smd PAD over the
I am have created a footprint for an Altera CPLD in Eagle PCB. It has EQFP64 pin package with 0.4mm pitch with nominal pin width being 0.18mm. Details are found here I know that the smd pad must be bigger than the package pin. This way it shall be a
We rarely use thermal relief on smd assemblies, especially when SMPS's are involved or high power. As Klaus has said its all down to correct pre-heating, gently raising the whole assembly to the correct temperature, no thermal shocks.... If it is done correctly you will have no problems. Its like tomb stoning of chip components, if it happens you h
Hi ArticCynda, 3 big holes : 2 purposes i.) Act as guiding when pass through smd machine and during pcb level testing. ii.) Fix to cabinet during casing 6 vias surround big hole : To avoid copper plate torn off from substrate Roger
Hi, I am trying to create JST connector footprint of 6 pin smd , but i need to include 2 soldering pad on either side of the package. i try to place a pad for it, but while net listing error show up as extra 2 pad in the footprint. kindly tell me how to go with the soldering pad which has no electric connection , which is only used (...)
Its a surface mount device, use the recommended footprint is best, the size is going to be so small you would hardly notice. use some other method such as silk, or do what many do and rely on data and pick and place info being correct. I have never seen anyone do a different pad for an smd devices pin 1 (PTH, some use a square pad) but for small SM
hii all, Anyone have footprint (thru hole/smd) of S/PDIF type connector???
Many smd libraries and manufacturer footprint suggestions also define an occupied area or "courtyard" to account for placement tolerances. It usually requires a larger component spacing than minimum solder mask.
...the intention is to have a footprint that adapts smd components to thru-hole pads... This problem can be turned around by using Vias working as Tracks, just changing its layer from default Multilayer to Toplayer and assigning the same pin designator to both. And, of course, setting its Hole Size parameter to "0"
Hi aslam Here i attached sample footprint for you (check page no 256 in your datasheet). 1) open your PAD designer (cadence-->PCB utilities-->pad designer-->select Layer mode-->select shape as rectangle in downside )after that select TOP,solder mask,paste mask for smd Package,enter the width and height of the package as mention in rectangle box
Hi, I have a question regarding dimension tolerances, which are given by manufacturers. For example this ceramic capacitor: . The one I choose is 0603 in imperial. The tolerances for the Length and Width are +/- 0.1mm. The lead width is 0.35mm +/- 0.25mm. it's about 70% tolerance. Since I'
Hi, I want a suitable footprint for smd electrolytic capacitor 470uF/25V and 1000uF for Altium, but can't find any thing. please help me to find it. Thanks.
Just wondering, are there any supercapacitors(in mF) with 0603 footprint and 6.6 V or higher rating?
I am using Altium Ver.10.391. I want to change all of my TO-90A Thru hole to SOT89L smd. I got message : " cannot match pads with new footprint". What can I do to replace them? Thanks DV
Clearly yes. There are detailed IPC specifications for footprints, you can also refer to manufacturer footprint suggestions. The most important point is to understand the limitations of smd wave soldering. A lot of modern components (fine pitch, "quad" pin arrangement) can't be wave soldered. In my view, the technique is almost legacy (...)
Please who can draw to me or give me the footprint of the coil i have a doubt in understanding the dimension of the coil
hi, I am design one layout for my project in this layout all component is smd package type, I am also given same footprint to it , but still when i completed my component placement it gave me ERROR 136 Something. I also give a snap shoot of that error was occurred images
im using altium designer 10 for creating my PCB. now i want to create a smd board but my altium library doesn't have 805 component library.where can i download it?
hi 2 all i request u all pls any one can make me the pcb footprint of ICL7107 ITS AN smd IC AND THAT SHOULD BE SAVED IN PADS2005 WHY WE R HAVING THE LICENSE FOR PADS 2005 ONLY SO PLSSSSSSSSSSSSSSSSSSSS HELP ME URGENT:sad:
You need to pick the components for through hole instead of smd. Most likely you have to replace all the components. When you place the component, look whether the footprint is smd or through hole.
m using orcad 9.1 last 6 months only. i m new 2 this field. in orcad layout library, for smd type footprint what is this, "QUAD.050/44/WG.785" here 44 means 44 pins then 0.05? wg.785?. plz explain it .05 will be the leg pitch 0.05". The WG.785 will be the body dimension I think: 0.785". I think that may
i have searched it in Turuta E. smd Code databook 2007.pdf. it is not listed in it. can you send a picture of the smd component. Hock
I doubt you will get each and every component footprint for free you can ask some vendor who can make all the smd footprint for you or you have to create it by yourself Standard packages are alsways available you can get them by searching on internet.
1) you need to connect using off page connectors to connect the nets. 2) you need to go through the IPC7351 smd footprint standards to understand the different footprints.
does anyone has an idea in smd technologie, the problem is that when i design the footprint of a resistor in the datasheet they make only the maximum and the minimum value?? what is the value that i should take to design the footprint?? is the package 0603 standard or it depends on the chip?? regards,
I have a 28V 50A source. I wish to implement a relay to handle this source and have a switch for switching ON/OFF this relay. Any advice or sample circuit design for this implementation? I prefer a smd mount, low profile, small footprint relay.
I need footprint for MMT3799 transistor mmt3799 smd.pdf - - 0.03MB According to www.americ
Dear All: I need to create a customized 0402 capacitor footprint(smd) to use in MentorGraphic Expedition. The recommended size from IPC-SM-782A is too large for me. May I know what is the minimum pad size, pad pitch, solder mask, body outline size etc. that I can use? Thanks in advance. Regards,