Questions tagged [footprint]

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

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How to identify pin 1 from mechanical design

Looking at 10142048 datasheet from TE I'm not sure how to identify pin 1 from top side. At page 9 there are the pin assignments from bottom side only. Now, I guess: ...
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AC Plug Type F PCB design?

I am designing a smart plug device. I need an ac plug footprint for my design. I will use type F (schuko) plug but I could not find its design files for altium. Can somebody inform me? Thanks in ...
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RF trace matching network component pad sizes

I'm creating an RF connection between a PSoC4 BLE device and the cypress MIFA antenna according to this app note. I'm confused about the pads that are required by the components used in the RF ...
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Import DXF defined padstacks in to Allegro/Orcad PCB

I'm using Orcad PCB Professional 17.4-2019 S017 I've got a symbol with some funky pads on it, one the padstack editor cannot generate. Here's where I'm trying to get to. Green is mask boundary, blue ...
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Altium avoid DRC error coming from footprint that are not errors

This connector has a "placement pin" through its external pad. It leads to this design: The fact that the pin hole is in the pad leads to a DRC error. There's also a DRC error for the other ...
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Looking for a pin-compatible to LT1013DID rail-to-rail in/out op-amp

I have designed a circuit using LT1013DID (SOIC 8 footprint) op-amp and while Spice simulation worked, I forgot about input common-mode voltage limit (which it seems is not simulated) and thus need an ...
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28 views

How do I make sure my part matches with the eagle part selected?

I need help matching the part I have with the eagle part. I'm using a RPX-1.0 data sheet pdf: https://www.mouser.com/datasheet/2/468/RPX_1_0-1903909.pdf It is a 3mm by 5mm qfn with 16 pins but it ...
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Pads in IC's corners

One can sometimes observe rectangle pads in the corners of some IC's footprints: What are they for?
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Creating a footprint for a component with plastic “bumps”

I think that I can best describe my question by giving two examples: This is a TRS audio jack: https://uk.farnell.com/lumberg/1503-03/connector-receptacle-3-5mm-phono/dp/1216980. It has two plastic &...
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Symbol for SAW filter - DEA142450BT-3028A1

I wanted to create a symbol for the SAW filter to use for my project in PADS Professional Designer, but when I try to download the part through "PartQuest" it has no symbol or footprint. In ...
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Kicad Footprint Validation Conflict

I am trying to create a simple SMA connector footprint in Kicad but whenever I try to save the footprint to a library, Kicad generates a "validation conflict" error. I have no visibility ...
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SMT Multi-Footprint Size to IPC standards for production

I am currently designing a board that will need end up getting CE tested, and I am currently testing the effects of different sized decoupling capacitors but I am constrained on space. I want to make ...
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Is it possible to create Altium PCB footprints without designator labels?

I'm pretty new to Altium, have years of experience with Orcad. At the moment I'm in the process of filling a PCB library. Among them there are no-BOM footprints like test points, mounting holes and ...
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Altium mechanical layers not showing up in layer selection

edit: I'm dumb I realized I could just press "l" and manually add in the mechanical layers I need I have a few .PcbLib documents, and all but one of them I am able to select lines, polygons, ...
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IPC-7351 vs manufacturer pad dimensions

If I were to make a make a footprint, even for a simple component like a 0603 cap, and the manufacturers recommendation differs from IPC-7351, would it be recommended to start with the manufacturers ...
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Are KiCad's horizontal 2.54" pin header and 90 degree pin headers equivalent?

I was experimenting with PCB layout in KiCad and noticed that the Connector_PinHeader_2.54mm > PinHeader_1x06_P2.54mm_Horizontal footprint and a physical 90 degree pin header I have do not seem to ...
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244 views

How to associate multiple symbols with one footprint in KiCad

I made a schematic for a 5 band analog EQ. I used OP Amps to make active bandpass filters for various frequencies within the human hearing range which means when I made my schematic I drew 5 OP Amps ...
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Locating and Adding Arduino Due Schematic/Footprint to Altium

I am working on the design of a PCB that is being used to allow for quick/modular swapping of sensors with specific types of connectors to various pins on an Arduino Due board. I have looked but I am ...
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Altium Footprint has a huge room than the footprint itself

I have a problem regarding footprint clearance or something similar while using Altium 18.1.11. The problem occurred as I designed a Pad with via on it but when I imported it to the PCB doc, the part ...
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KiCAD: “Footprint has no courtyard defined” using Arduino shield template

I made an Arduino shield with KiCAD. When I finished the board in PCBnew, I ran a design rules check. I got "Footprint has no courtyard defined" on all the mounting holes in the shield ...
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66 views

KiCAD: Ideal directory to store custom footprint

I downloaded a footprint for one IC from the internet. It contained a .kicad_mod and a STEP file. I have a directory where my project lives, so inside there are .pcb, .pro, .sch file and so on.... ...
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300 views

KiCAD: Footprint for pushbutton (arduino)

In the last days i was trying to figure out how footprints for KiCAD work. With help from people of this forum, i have achieved in completed all the footprints except one. I have a pushbutton for an ...
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216 views

KiCAD: Footprints for {Axial, Horizontal, Through Hole} Resistors

I have these two resistors in my schematic, that i want to find footprints for: Body dimensions = 2.5 x 6.8mm AND Leads dimensions = 0.6 x 28mm (like this one: https://www.acdcshop.gr/...
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611 views

KiCAD: Footprint selection for common through hole parts (resistors and capacitors)

I am in the stage that I have finished my schematic and I have to select footprints for my components before heading over to PCBnew. However, I could not find a guide on how to select footprints for ...
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3d footprint (PCB) on PADS

I have uploaded a feed imprint from Mouser electronics site. the symbol and the Footprint are good. but when I look at the component in 3d on the software (pads logic and pads layout) I see the power ...
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1answer
60 views

How to know component's offset when making custom footprint

First of all, I'm using KiCAD, but I guess the same problematic exists in any layout software. When I need to create a custom footprint for an SMD component, I only set the coordinates of whatever ...
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105 views

Why do I get these odd foot prints from JLCPCB - 0602 and 1206

Why do I get these foot prints from JLCPCB? The parts are regular 0602 and 1206 and capacitors. I'm using KiCad 5.1.7. No external libraries. Everything is default. My GerbView:
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39 views

Identify cable connector for fingerprint sensor

I want to create a custom PCB to which this fingerprint sensor will connect. The problem is that I cannot identify which connector it uses. The sellers on Amazon and other sites don't know about it. ...
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86 views

What USB-C Footprint is this?

I have to replace a USB-C connector. After desoldering I found a rather uncommon footprint. Has anyone seen this footprint before and knows where to find a new connector of this type? Thank you!
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KiCAD 5 ‒ Is ist possible for a footprint to have multiple courtyards?

One of the components I am using is really a daughterboard that plugs into two rows of pin headers. Under the daughterboards, between the pin headers, there is space for a additional components. I ...
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30 views

Reducing Thermal Pad Size Below Official Footprint - Can It Create Manufacturability Problems?

I'm using a DP83867 Ethernet chip by Texas Instruments in an S-PQFP-G64, 10 x 10 mm package, the mechanical dimension and its recommended footprint are shown at the end of the question. As shown, the ...
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110 views

How to merge polygons into a single pad?

I need to create a pad in a PCB footprint, This pad is created using these 3 polygons but I dont know how to merge them together into one pad. I am using Altium 17. edit Thanks to Chris's comment,It ...
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78 views

Texas Instruments Step-Down DC-DC Converter orientation

I have a Step Down DC-DC Converter IC, purchased from Texas Instruments. Part number: TPS54331 Datasheet: www.ti.com/lit/ds/symlink/tps54331.pdf?ts=1599690098737&ref_url=https%253A%252F%252Fwww....
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175 views

Maintaining clearances in HV MOSFET footprints

I'm thinking of making a prototype PCB which would use a bridge rectified AC, which will end up with peaks around 350V in my area (+/- some smoothing). It's a through-hole design and the circuit will ...
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45 views

Importing Altium schematics to a PCB is placing some components on a forbidden and an unaccessible area

I was using Altium 16 and generating PCB from schematics with no room generation. I have created my components library by mostly using "ultra librarian" files. I do these steps as many other ...
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337 views

SOP-4 Package Footprint Standard

I've got a TCMT1102 Vishay optocoupler. Its a 4-pin SMD part but there is no standard package type associated on the datasheet - i.e SOP, SSOP, TSSOP etc. Vishay has a footprint document that ...
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PowerElement footprint confusion

I am attempting to use some of ERNI's PowerElement parts but the associated datasheet and catalogue does not appear to be clear on the associated press fit feet https://www.erni.com/en/products-and-...
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Any advantage in AC-DC or DC-DC with past, large form factor semiconductors?

I want to clarify this question with my real-world example: Say you have a device which contains some AC-DC converter (or DC-DC) for rather high power specs (10 kW up to 300 kW, not in the same ...
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What's the smallest footprint dual H-bridge?

I am designing a circuit with 4 small electric motors. The motors I selected are SMT and are driven by 3V power source. It makes sense to drive each pair of motors by a dual H-bridge, but I can't find ...
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536 views

Altium error: “net contains multiple output pins” on LT3045 chip

I have two concerns: Is it okay to have "contains multiple output pins error" in Altium? Is anyone familiar with LT3045 chip? Its datasheet applications only have 1 "IN" pin and 1 ...
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171 views

Why have the same chip in the same package, but with a different number of pins?

STMicroelectronics offers the following two accelerometer chips. The LIS2DW in a 14 pin LGA package The LIS2DW12 in a 12 pin LGA package These two chips are functionally equivalent and have the same ...
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236 views

KiCad footprint or supplier footprint?

I download symbols and footprints from the component supplier into a project's library to go faster but I realized that many of the standard components footprints are slightly different in KiCad, like ...
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65 views

Custom Altium footpring

I want to design a concentric circle shaped footprint in Altium. The inner one is Vcc while the outer is GND. I tried placing the pad and such but there is no way I can have the outer circle with the ...
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80 views

Are only standard footprints ever used? What if a manufacturer wants a devices footprint but the manufacturer doesn't list it?

They want a BOM like this but the part I want doesn't list a footprint. It lists the components dimensions and then you have to make the footprint yourself so I don't think there is a standard name. ...
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437 views

Altium Collision DRC error? Cant figure out why

i have finished my PCB design with Altium. I ran the DRC, to check if there are any errors. Strangely i got like hundreds of errors. First i couldn't find out why, but i managed to narrow it down to ...
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addition of external footprint to ki cad

I have downloaded a .stp file of MAX14878 foot print. I tried to add it to the library through manage footprints options. It shows a table where it is added. But I am not able to find it during edit ...
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37 views

In Altium Designer how do I navigate to the component editor from the PCB layout screen?

I am teaching myself Altium Designer 2017 coming from EAGLE. If I want to edit a component in EAGLE I can right click on it in the board view and then click "open footprint". Is there a similar ...
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136 views

Number of pins of elements

I've created a footprint for the rotary encoder, which symbol is shown below A footprint for this element has been done by myself. I've been getting a warning which goes like this: "WARNING(ORCAP-...
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121 views

Heatsink land pattern interpretation (DPAK heatsink)

I'm looking at using a D Series heatsink from Ohmite. The land patterns on the last page of the product PDF are very lightly labeled and I'm not entirely sure how to interpret them https://www.ohmite....
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237 views

How to integrate external library into KiCad

I am using KiCad (5.1.5). I got this self-made library from my lab mate he told me to make some changes to his schematic. Inside the folder that he gave consists the following folders and files: ...

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