Skip to main content

Questions tagged [footprint]

Footprints are the CAD representations of the pads (and other physical/mechanical features) of a board-level component.

Filter by
Sorted by
Tagged with
0 votes
1 answer
27 views

SMD connector soldermask opening size

I was reviewing the Samtec-provided KiCAD footprints for their 0.5 mm pitch LSHM connectors and noticed they completely remove the soldermask and in a strange way (note rounded corners) that suggests ...
user1850479's user avatar
  • 17.6k
2 votes
1 answer
296 views

KiCAD symbols for JST connectors

I'm trying to add JST connectors library to my KiCAD installation. I'm using KiCAD 8. I see that Connector_JST is in the KiCAD footprints and the KiCAD 3D shapes but not in the KiCAD symbols. How come ...
Hubert B's user avatar
2 votes
1 answer
65 views

Footprint keepout layer

In general what is the purpose of having a keep out layer in a component footprint? for example in the following components: There is a layer related to keep out layer as follows: What is the ...
Andromeda's user avatar
  • 477
1 vote
1 answer
76 views

PCB footprint design for minimum solder use [closed]

Are there any studies that show how to design a footprint for minimum solder use? I'm looking at an application where many millions of solder points per day will be running. Obviously there's a ...
user103218's user avatar
0 votes
0 answers
18 views

Pinout for Onsemi AR1335 (63-ODCSP/63-WFBGA/CSPBGA)

I am currently working on a project utilizing the Onsemi AR1335 (AR1335CSSC11SMKA0-CP) CMOS Image Sensor, 13 MP, 1/3". I chose this sensor since my MPU/APU platform (NXP i.MX8M P) already offers ...
Sofia Braun's user avatar
1 vote
0 answers
44 views

Identify 64k x 8 bit DRAM in DIP-24N from the pinout

Unfortunately, I don't have the photo of the IC or any reference to it. All I have is a high-resolution photo of a PCB with unpopulated footprint where this IC should fit. It is wired in parallel to a ...
tpimh's user avatar
  • 513
0 votes
0 answers
64 views

How do I import 3D footprints into Altium CircuitMaker?

I need to create my own part, so therefore I need to import a pre-made footprint and 3D-model. I have the model in .step, .wrl, .iges etc... https://www.st.com/en/microcontrollers-microprocessors/...
euraad's user avatar
  • 1,324
-1 votes
1 answer
79 views

Does KiCad no longer support THT footprints for home soldering of pin headers? [duplicate]

I cannot find any connector that will simply allow me to make a PCB with THT holes for me to solder my own pin headers. The best I can find online is this link which identifies parts which I cannot ...
Hektor's user avatar
  • 165
0 votes
0 answers
36 views

Handling flexible PCB coverlay openings in fine-pitch footprints

I'm trying to understand how to handle fine-pitch pads on flexible PCBs. For example, a LIS2DH12 accelerometer uses an LGA-12 (2mmx2mm) footprint with 0.25mm wide pads on a 0.5mm grid. I'm doing a ...
TvE's user avatar
  • 286
1 vote
1 answer
40 views

How could I get the footprint name in Altium?

I am creating a component in such a way that in the schematic file it would be possible to change the footprint, and the component parameter "Package" will be updated. I tried to put "=...
arlen's user avatar
  • 63
2 votes
0 answers
106 views

Why are solder pad layouts in datasheets always drawn up so unintuitively?

I am making a PCB that is using parts that require me to draw up custom footprints. So far, all the parts I've come across have the most seemingly stupid selection of measurements for pads. Take this ...
ezra_vdj's user avatar
  • 620
2 votes
2 answers
355 views

Does a BGA connector usually have bigger solder paste than the solder mask opening?

I'm designing a breakout (debug) card for the FPGA Evaluation Board VC707. For this I'm using two FMC connectors (MC-HPC-10), for footprint and design of the connector I got help from the website (...
johnny_1010's user avatar
1 vote
2 answers
154 views

What is this mystery footprint on my PCB?

Doing some repair work on a Yamaha FGDP-30 finger drumming instrument, and I came across this unpopulated footprint on the main PCB The CN999 label and proximity to the main IC lead me to believe it ...
Nick Badal's user avatar
0 votes
1 answer
53 views

XMOS XCORE 60-pin QFN footprint ground pad

I'm designing a PCB that uses an XMOS XCORE microcontroller (XU316-1024-QF60B-C24) and the only GND connection it presents is the middle ground pad. I couldn't find any example of how this is supposed ...
Emerson's user avatar
  • 423
1 vote
0 answers
52 views

Coilcraft model pin 1

In the two images and linked model description, am I incorrect, or did they place the pin 1 indicator incorrectly? It should be bottom right, from the top view. Edit: seems their photo for the model ...
Wes Ellgass's user avatar
1 vote
1 answer
62 views

Transformer pins not matching PCB layout

I am replicating one of our recommended designs for a POE application. Here I have an EP13 forward transformer FCT1-50M22SL as recommended in the BOM. The pins do not match the provided image of the ...
Wes Ellgass's user avatar
1 vote
1 answer
71 views

Transformer Pads not specified

FCT1-50M22SLD Pads 3 and 8 are not specified, or am I incorrect? How would you link the footprint to the symbol, since no models are available for this?
Wes Ellgass's user avatar
0 votes
0 answers
45 views

Altium - Complex keepout shapes in Footprint Editor

Is there a good way to create complex keepout shapes in the footprint editor in Altium designer? I'm attempting to create a large keepout that needs to be everywhere except two pads shown (to avoid ...
Adrian Ramirez's user avatar
0 votes
3 answers
77 views

One footprint, two configurations - KiCad

I want to make a single PCB that works for two product versions. One of the footprints will have to sport different placements of the same component for the different versions. I want a footprint with ...
Alexander Ohm's user avatar
4 votes
2 answers
368 views

Custom made NetTie in KiCAD7 can't be routed

I have created a footprint for NetTie of custom size (I wanted 0.2mm pad/connection), as the library-provided one has the size of 0.5mm and is too big. I have tried two ways of routing: from other ...
smajli's user avatar
  • 940
2 votes
1 answer
136 views

HC-05 Bluetooth Module CircuitMaker

I am new to PCB design, and I am designing a circuit with a HC-05 Bluetooth module. I'm using Altium CircuitMaker and there are no symbols or models in there for a HC-05 Bluetooth module. Does anyone ...
Vagabond4761's user avatar
0 votes
1 answer
41 views

IC pads showing up in the copper layer but not in the soldermask layer (EAGLE)

I am designing a PCB using the AOZ2261NQI-12 buck regulator IC. I used UltraLibrarian to grab the ECAD files like I usually do, and everything looks kosher. However, when I place the part in a design ...
InBedded16's user avatar
1 vote
1 answer
76 views

SMD small footprint problem, extending pads for more solder

I have this component (LTST-FC12WEGBD-5A SMD LED by Lite-On) that has been very difficult to use due to the pad sizes being so small. Below is the footprint. The problem is with the smaller square ...
Ricardo Serrano-Smith's user avatar
1 vote
1 answer
79 views

IPC 7251 annular ring meaning

When looking at IPC-7251 Table 3-3 (see the table in Sergei Gorbikov's answer at How to determine annular ring width for thru-hole pads?), for a through-hole pad in Level B the annular ring is given ...
John Arg's user avatar
  • 209
0 votes
2 answers
48 views

Courtyard Determination for SMT Trimpot

I would like to use the Bourns PVG3G103C01R00 in a design and am trying to figure out how to determine the courtyard for this part, compliant with IPC-7351B. I do not currently have access to the IPC-...
user196021's user avatar
4 votes
4 answers
425 views

How critical is SOT89 footprint?

I've pulled datasheets for a dozen compatible NPNs from Toshiba, Diodes, Onsemi and Nexperia. They all had different recommended layouts for SOT89 package. More than that, Nexperia has different ...
Maple's user avatar
  • 12.9k
0 votes
1 answer
91 views

Side view LED 90-degree PCB orientation

Currently how the LEDs are place on the board, cathode (1) left, anode (2) right, and I am assuming the LED is meant to fire downward, or in this orientation down and mostly left in the 3D model image....
Wes Ellgass's user avatar
0 votes
2 answers
41 views

PADS for land pattern coilcraft

How can you even make a footprint/ land pattern with this info. Is that land pattern the pads? Is that a wire going into the model, meaning my pad just needs to touch either side of the component? ...
Wes Ellgass's user avatar
0 votes
1 answer
45 views

How to deal with footprints in shared workspaces in Altium?

I am in a university project and we use a shared workspace. Now I have to redo a PCB from a project done by a fellow a few years ago but when I open the project in my computer, it says that there are ...
Gabriel Corrales's user avatar
2 votes
0 answers
32 views

What are the common package names for pin spacing in multiples near 50-mils?

I'm looking for component package names that are known to provide conductors on (nearly) 50-mil spacing so it fits well on a 50x50mil SMT protyping board. I know SOIC are 50-mil, and even SOT-223 is ...
KJ7LNW's user avatar
  • 2,054
10 votes
5 answers
2k views

Thermal relief for a chip without metal plate on the bottom

I have a chip in which I have selected this footprint: Package_SO: SOIC-8_3.9X4.9mm_P1.27mm. This is what it looks like: Because this chip gets pretty hot, I ...
user1584421's user avatar
  • 1,369
2 votes
2 answers
265 views

Footprint for potentiometer with support pins

I am trying to add this: potentiometer to my design. As you can see, it also has two pins in order to support it structurally. This is the datasheet if anyone is interested: https://www.tme.eu/...
user1584421's user avatar
  • 1,369
2 votes
1 answer
81 views

Create footprints on flexible PCB

I'm completely new to PCB design but I'm trying to create my own flexible PCB. Now I want to recreate the board below but with different contact pads on the bottom (because they are really fragile). ...
Jellyfish's user avatar
0 votes
1 answer
166 views

Footprint for 12.3x12.3mm SMD inductor

I want to incorporate this inductor: https://www.lcsc.com/product-detail/Inductors-SMD_SHOU-HAN-CYH127-150UH_C2929506.html in my project. Datasheet it here: https://datasheet.lcsc.com/lcsc/...
user1584421's user avatar
  • 1,369
0 votes
2 answers
77 views

Clearance error on pin header solder pads in Eagle

I am getting a clearance error on the Sullins connector PPTC191LFBN-RC. I got the EDA models from Octopart. On including this model in my design I am getting a solder pad clearance error on both the ...
Soham Chakraborty's user avatar
3 votes
1 answer
201 views

Making a DE-15 (HD-15) connector footprint from datasheet

I am trying to make a PCB footprint of a edge-mounted DE-15 D-sub connector (a.k.a. HD-15, DE15, HD15), however the datasheet does not seem to provide enough metrics to make it unambiguous. Here is ...
JohanPI's user avatar
  • 173
0 votes
1 answer
285 views

Kicad 7. No footprints after upgrade from Kicad 5

I used to have Kicad 5, then in the middle of the project, I decided to upgrade to Kicad 7. When I run the footprint assignment tool, I got a message that footprint libraries are missing (...
user1584421's user avatar
  • 1,369
0 votes
0 answers
133 views

Meaning of "DMC" abbreviation in LED footprint

I'm planning on using the SU CULDP1.VC UVC LED for a design, and I'm reading through the datasheet. In the package drawing of the component (p 12 of the datasheet, which can be found here: https://...
Lars Petersson's user avatar
0 votes
1 answer
90 views

Altium: How to generate SMD switch footprint using Wizard?

Here is excerpt from datasheet for the A6S-4101-H. I need two rows of pads. The distance between (center of) pads in a row is 2.54mm. The distance between the (center of pads) two rows is 8.9mm. Each ...
quantum231's user avatar
4 votes
1 answer
320 views

Reflow soldering with decreased footprint size fully within pad

So the original footprint is first, followed is the edited footprint to allow for inner pads to be accessed. As you will notice the extended pad footprint is smaller than the pad. Will this cause ...
Tony's user avatar
  • 187
2 votes
2 answers
243 views

Kicad DRC Error "Footprint has no courtyard defined"

At the final stage of the PCB design, I performed an ERC check. I got the message: Footprint has no courtyard defined @(156,718mm, 78,296mm): Footprint RV1 on Front ...
user1584421's user avatar
  • 1,369
5 votes
1 answer
165 views

Are these circles in the exposed pad of a VQFN footprint meant to be non-metallized, and if so, for what purpose?

I am creating a footprint for a TI TXS0108ERGYR level shifter and encountered these circles drawn in the exposed pad for its land pattern: Are these meant to be non-metallized and if so, for what ...
JYelton's user avatar
  • 34.3k
2 votes
2 answers
469 views

KiCad footprint for 5 mm three pin potentiometer [closed]

I want to use a standard three pin through-hole potentiometer in my design. The pins have a distance of 5 mm between them. KiCad has literally hundreds of footprints for through-hole potentiometers, ...
user1584421's user avatar
  • 1,369
1 vote
1 answer
822 views

Tactile button switch footprint in KiCAD

I want to use this tactile switch in my PCB design: https://datasheet.lcsc.com/lcsc/2002271735_XKB-Connectivity-TS-1101-C-W_C318938.pdf As you can see in the document, the distance between the edges ...
user1584421's user avatar
  • 1,369
0 votes
1 answer
182 views

KiCad - SOD-323 footprint

I want to use this component in my design: https://datasheet.lcsc.com/lcsc/2201121330_JSMSEMI-1N5819WS-S4_C2927280.pdf It says that the footprint is SOD-323. I ...
user1584421's user avatar
  • 1,369
3 votes
2 answers
462 views

Footprint assignments in KiCad

Does anyone know what footprint assignment for the potentiometer WH148 style in KiCad? There were a lot of footprints but I don't know which one is the same as the WH148 style.
mama b's user avatar
  • 83
4 votes
2 answers
1k views

Footprint for Electrolytic Capacitor

I plan on using this capacitor on my project: https://datasheet.lcsc.com/lcsc/2209011730_KNSCHA-RVT330UF50V167RV085_C5155333.pdf This is an electrolytic capacitor (this means it has polarity.). The ...
user1584421's user avatar
  • 1,369
0 votes
0 answers
55 views

Is there any provided footprint for the AS5F18G04SND-10LIN from Alliance Memory?

Documentation link All I could find in the documentation was a really low resolution (and impossible to read) package outline. I also looked elsewhere for a footprint for that package and the IC ...
NickKnack's user avatar
1 vote
1 answer
165 views

Package and footprint - Are they correct

In this device, on page 208, the page has the Package outline drawing. 8-pin package. SOIC. "8S2, 8-lead, 0.208” Body, Plastic Small Outline Package (EIAJ)" I want the footprint of this ...
Freshman's user avatar
0 votes
1 answer
57 views

Manufacturer part search in Altium 17

Do you know if the "manufacturer part search" is available in Altium 17? I have tried it in Altium 23 but I am not able to find it in Altium 17.
tommino's user avatar
  • 21

1
2 3 4 5
8