Questions tagged [altium]

Altium is integrated schematic capture, PCB design and FPGA software.

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Showing parameters in generated schematics in multi channel design - Altium

Im working on multichannel design where components are the same just value is diffrent. I download sample project from https://designcontent.live.altium.com/#ReferenceDesignDetail/Parametric_Hierarchy ...
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11 views

Altium default sorting order when using SQL Database Libary for components [migrated]

we are planning to migrate from MS-Access Database Libraries for our components to a company-wide SQL-Server (MS SQL) to use it with Altium 20/21. So far I have managed to connect to the SQL-Server ...
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16 views

Altium designer mass component changes in library

I want to modify the description and name of a number of components in schematic library. How can I do that effectively? Right now, I have to do it manually which is not really nice to do because I ...
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1answer
25 views

What is the difference between Internal layer and Internal plane in altium and how to use them?

I'm designing a PCB using Altium and I have 3 signals that I want use in different layers: 5Vcc 3Vcc GND Initially, using Polygon Pour, I made GND planes at the top and bottom layers. However, as ...
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46 views

Trace impedance calculation in Altium for RF

I am routing the RF trace for a Microchip RN2903 LoRa module. The datasheet states the following: I wanted to use Altium to calculate the width of the trace automatically, so that it had a 50 Ohm ...
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26 views

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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24 views

Altium Tracks being overlapped

I'm using Altium designer (20.0.13) to edit my old PCB. In some of my PCBs the tracks are overlapped during routing and pushing. Don't know why this is happening even Rules> Electrical> tracks ...
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50 views

How to prevent isolated copper in thermal reliefs / wagon wheels in Altium?

How to prevent thermal reliefs / wagon wheels messing up copper and creating dead/isolated copper on through holes and VIAs? I have a 10pin 2row 1.27mm (50mil) pitch header. This is how Altium ...
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58 views

Altium not showing PCB's body in 3D view

I am trying to copy the Arduino schematic, but when laying out my PCB in Altium I have issues with the 3D view. As you can see from the picture below, the PCB appears without problems in the board ...
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25 views

how to change pitch value of a LQFP footprint in Altium 20.0 [closed]

LQFP footprint-I want to change pitch value
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1answer
40 views

Length matching, Routed or Signal on Altium?

I have searched some information about the diference between Signals and Routed on the PCB Tab in Altium, and I understand it, but, when you have to do a length matching, Which is the best option? The ...
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17 views

Net names of diff pairs on Altium

I have a question about schematics on Altium. When I put a capacitor (or other component) in a diff pair line , the lane after the component loses the diff property and i have to use labels for all ...
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87 views

How do I remove this ring around the via?

I am wondering what this is this ring around the via and how do I remove it? I am using Altium 20.
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337 views

Should routing traces be wider than top layer soldering pad?

In one of my PCB design, the microprocessor soldering leg pad size are .254mm x 1.4mm while the ground(GND) routing trace is .4mm thick. I'm trying to figure out is it safe to route the .4mm thick ...
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43 views

How can you make curved PLATED slot in Altium 17?

I need to make a plated slot in Altium, but it needs to be CURVED, rather than straight. I can make non-plated curved cutout by drawing curved track with the needed thickness and then using Tools>...
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27 views

Crystal and capacitors routing

I´m finishing my PCB Design (Carrier Raspberry Compute Module 4 PCB, with an USB 3.0 Controller), and I have a question about routing crystals oscillators. I have read this guide: http://ww1.microchip....
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62 views

Where can I find PCB templates for add on boards

I want to design some add on boards that will use Mikroe Click Board (TM), Pmod interface and Arduino Interface. The work shall be done in Altium Designer. Do there exist any PCB templates that I can ...
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18 views

Problems with voltage supply in Altium IBIS simulation

I have a question regarding my project. I am designing high speed output from my microcontroller. Switching times should be around 450 MHz, so I found IBIS model for my microcontroller and line ...
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1answer
38 views

mange former project in Altium

I have several projects that designed by a different designer .They used personal library with specific Item ID for the same component. I want to manage them and link them to a supplier. If I do that ...
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41 views

Polygon pour on internal signal layer ALTIUM

I am working on a six layer PCB, the layers are Top layer, layer 1...layer4, Bottom layer. I am trying to create a polygon pour on any internal layers (for example layer 1). However when I try to pour ...
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463 views

How to make a cut in a via

I want to make a cut in the via like this image: I'm using Altium to develop. I was recommended to make the via "castellation" but I can't find how to make this via in the center of the ...
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1answer
74 views

How can I solve this PCB problem in Altium? [closed]

I tried to change width size and also design rules wizard, but it didn't work. Can anyone help me? The problem is small circles. They shouldn't be on the components and I tried to fix with design ...
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21 views

Duplicate designators in a panelized design in Altium

I am using Altium 21. I am panelizing the design using Place -> Embedded Board Array/Panelize menu in a PCB editor and later output the Pick and Place centroid file from the resulting panelized ....
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1answer
24 views

With Altium 17, what is the result of placing and SMD Pad inside Solid Region?

When an SMD pad resides in a solid region, created with default settings, is the result the same as if the pad were inside a polygon pour with the exception that there is no thermal relief?
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47 views

About length track measurement - Altium

Hi everyone one more time, I have a silly question about trace length measurement on Altium. I was using the PCB tab to measure the length of the traces (on mm). Measuring PCIE_REFCLK_P on the tab de ...
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1answer
769 views

Why won't this trace connect to the copper pour?

Why is Altium not letting the trace touch the copper pour? They are both the same net.
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16 views

Is it possible to import altium libraries all at once

I am trying to setup my own library folder without using the altium 365 or the vault feature. Is there a way I can install all the intlib/pcblibs+schlib all at once or make it part of a project ...
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2answers
91 views

Differential Pairs and Power Planes

I'm working on a Raspberry Compute Module 4 Carrier with an USB 3.0 Controller with High Speed signals. As I read here in other thread, I decided change polygons for power planes, but I have 2 doubts ...
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2answers
41 views

Series repeating sheets in Altium

I need several number of WS2813 LEDs (20 LEDs), to be connected to each other in series, to form a strip ring. Each WS2813 has an input DI (D1) which is generated by MCU and also has an output DO ...
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1answer
77 views

Are analog planes necessary for my circuit?

I'm working on a Raspberry Compute Module 4 carrier PCB with an USB 3.0 controller. This controller (TUSB7320) needs 3.3V supply and 3.3V analog supply. Is it necessary to add an analog ground? This ...
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2answers
68 views

4 layers Design- Using polygons

I have finished my PCB Design, but I have some doubts about polygons. The stack layer is: Top, GND, PWR and Bottom. On PWR layer I have created 4 polygons for 4 different voltages (5, 3.3, 3.3VDDA and ...
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1answer
43 views

Re-annotation from pcb now means my components are linked with different designators

After placing my components I re-annotated from the PCB to get positional annotation. This worked fine. But I've just noticed that components on my PCB and schematic (whilst linked, i.e I can click on ...
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24 views

How to invert colors in Altium for Soldermask application

I am trying to invert black and white in Altium for the "Bottom Solder" *from this one *to look this one from https://www.youtube.com/watch?v=7ISmS7HuXSE. As it turns out, while doing ...
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1answer
26 views

Routing via style violation Altium

I have a part i imported from manufactuerers part list and has the following layout: This is the layout pattern in it's datasheet: I had set DRC rules to have a min via hole size of 0.3mm and this ...
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59 views

Use of Split Planes

sorry for multiposting but I have a lot of doubts on PCB Design. On my design, Texas Instruments (the chip manufacturer) tells that: "Never route signals over splits in their perspective ...
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11 views

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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1answer
31 views

SuperSpeed signal Routing on PCB

I'm working on a PCB Design with SuperSpeed signal lines with an Texas Instruments USB 3.0 Controller. I´m new on PCB design and I don't know if I'm doing something wrong. Can I cross the USB DM/DP ...
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18 views

Polygon Pour not working in inner layer Altium

When i try to pour plygon in my inner layer the outline of the polygonis only visible . Can somebody help me to solve this
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1answer
28 views

“Update PCB Document” button is missing

I worked on my schematic and I did the annotations and made my PcbDoc within the project, once I went to hit the Update PCB Document button from the "design" menu I realised that I don't ...
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1answer
39 views

Altium designing connector with mechancial pins

Trying to get this component drawn into altium: https://www.molex.com/molex/products/part-detail/pcb_headers/0039303035 It has 3 pins which are the electrical connections but then there is also the ...
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2answers
41 views

Altium Designer 21 Duplicate Net Name Error

I have a design that is erroring at compilation time with (among other errors) a bunch of duplicate net name errors. I have searched around including reading up on the top result for this problem (...
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24 views

RPiBoot control jumper requirement?

Please, I need help with this schematic. I would like if there is something wrong on this schematic about Raspberry Compute Module 4 Carrier PCB design. I will only use PCI interface and some GPIO's. ...
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14 views

Handling design design exceptions in multi-channel designs in Altium

Let's say I have a design with 5 channels. All channels are exactly the same, except the last one which has limited functionality compared to the other 4 channels and thus doesn't need some of the ...
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1answer
45 views

Add downloaded components to existing library in Altium?

I have just started using Altium as a student after using Eagle for a lot of years. I download part libraries from sites like Ultra Librarian and can use the supplied script to generate a library with ...
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1answer
30 views

How to see the solder mask layer in Altium PCB?

Is there a way to see the solder mask layer (green coating layer) of a PCB in Altium? Is it a mechanical layer?
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1answer
34 views

How are these layers like LCD added in Altium Designer?

How are these layers like "LCD" added in Altium Designer? My Altium version is 21.
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1answer
32 views

Altium Shortcut to cycle through all PCB layers one by one

I wonder if there is any shortcut in Altium to cycle through all layers of a multilayered PCB one-by-one? That is to say that when the shortcut is first entered 'Single layer mode' is selected and ...
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15 views

Altium-Mentor Pdf Help

This photo output from Mentor Graphic layout pdf output, when I click to component, there is information about component. But in altium, I can not make that. Do you have any idea?
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2answers
101 views

What does the hole size and diameter of a via means in Altium? What do they actually represent?

For my school project, I am designing a small PCB. For routing the signals I need to use a via. There will be around 500mA current flowing through the via. I am using 0.5mm traces to route the signals....
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26 views

Altium: Component Clearance constraint won't go away after setting rule

I am using Altium 18. I ran a DRC check and got the following error: This is saying i don't have clearance between J2 and MH2. This can be seen in the PCB: However, i have set the following rule: ...

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