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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KiCAD: Triaxial Connector Footprint from Drawing

I am planning to use a PCB-mount triaxial connector, CBBJR79TL, in a design for a laboratory prototype. Making reference to the "recommended mtg hole pattern" section from the CBBJR79TL drawing, I ...
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49 views

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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23 views

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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61 views

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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2answers
671 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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44 views

Making Daughterboard Symbol and Footprint With Multiple B2B connectors

I am using Allegro/OrCAD. Suppose I have a PCB module like the one below, which contains multiple B2B connectors and is meant to mount to be plugged into a larger PCB: Each B2B connector has its own ...
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229 views

Footprint panel is grayed on Altium Designer PCB

This is a project I imported from Eagle (not so bad by the way). I resolved all schematic compilation errors. But now I am facing some small issues in the PCB part: On the properties panel when I ...
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92 views

Correct implementation of overlapping pads in

I want to use a 3 terminal capacitor, whose land pattern is described on page 9 of the datasheet I try to replicate it with overlapping SMD and through-hole pads. According to PCB manufacturer's DR, ...
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53 views

placing hermetical packages on PCB and soldering

I stumbled upon some hermetically enclosed packaged - Link. The package has a small bulge/projection on the bottom. This makes the package leads basically float without contact with the PCB. How do we ...
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491 views

Do I need to fill in the vias under BGA pads?

I have a very dense BGA footprint. There is no way I can place the via between the pads - the PCB manufacture's tolerances do not let me. Also, the thinnest allowable traces do not fit between the ...
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438 views

funny shaped footprint pads & PCB123

I am using PCB123 to do a PCB layout and I have a part with some oddly shaped pads specified in the part's recommended footprint. It seems that in the footprint editor, there are only 3 options for ...
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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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17 views

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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2answers
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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25 views

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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1answer
58 views

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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1answer
61 views

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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69 views

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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29 views

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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40 views

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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51 views

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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32 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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1answer
69 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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1answer
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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1answer
150 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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34 views

TE Shrack miniature relay datasheet confusion

This relay (TE part number 1393219-3) datasheet has the following drawings in it (below). I am trying to make PCB footprint for it, and having issues with dimensioning. Length = 20 mm max Footprint ...
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29 views

eagle library model for STM32F730R8T6

I'm designing small DSP device, currently I've been using stm32 development board but now I need to move to dedicated PCB. I can make footprint for uC myself, but I believe it should be available ...
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55 views

How to update a packaging made in an original design to the one previously used in another design Proteus

I'm working in a design in Proteus where I'm making a multi-board design. I've made a previous design where I've made a PCB model of an ESP8266-ESP01 but initially I was mistaken with the pin ...
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67 views

PCB design - paste coverage calculation for exposed pad (TL;DR version?)

I have created a Web tool for creating solder mask and paste mask for exposed pad: https://jsfiddle.net/d1wang/5t6urzwo/ The idea is get around limitation of DipTrace and help automate footprint ...
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1answer
63 views

Is there a popular footprint for right angle SMT LEDs?

I am designing a PCB with SMT LEDs at the edges. The LEDs have to be right-angle type (ie. shine sideways). With regular LEDs I can use an 0805 or 0603 footprint and tell the assembly house to place ...
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1answer
317 views

LM2596 TO-263-5 or TO-263-6

Hi just a dumb question that I have to be sure. I will be using LM2596 It is stated in its description: IC REG BUCK 5V 3A TO263-5 That its package is TO-263-5. But on its package is TO-263-6, D²Pak (...
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386 views

Altium keypad footprints custom pad DRC errors

I've created a rubber keypad switch footprints which is a simple contact pad design. First I used arcs and tracks to get a outline and then converted them to top copper region(two seperate regions). ...