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Questions tagged [altium]

Altium is integrated schematic capture and PCB design software.

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Altium don't recognize differential pair net naming

I am trying to make a differential pair in Altium Designer. As I know from the documentation the net label should be <some_label>_P for one and <some_label>_N for another. However not any &...
Roman Matveev's user avatar
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41 views

How can I create a round hole in stiffener in Altium?

I am building a flat flex cable assembly. I have two regions Layer1 which has stiffener, and layer 2/3 with no stiffener. I don't see an option on the toolbar or in the menu to create a circle. I ...
Voltage Spike's user avatar
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Altium ver-24. Can not move/drag a footprint close to the board

Altium version 24: I have a completed schematic and imported PCB and I am doing components placement. Everything looked good until a heatsink was added. I added a heatsink symbol(HS1) to the schematic ...
Spark's user avatar
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Import Gerbers into Altium - Plane shapes wrong

I'm trying to convert some gerbers into an Altium PCB file using Camtastic and everything imports fine for the most part but the annoying thing is planes will import as stacked horizontal 1 mil tracks ...
BrownKuma's user avatar
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Altium edit multiple symbols at once

I've been working with Altium for a while and have always been a bit frustrated with how libraries work. I currently need to update the symbol of several components, for example adding a text to all ...
Yaxit's user avatar
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Change the sheet size/shape in Altium PCB editor

In Altium PCB editor you can make the 'sheet' visible by opening the View Configuration ('l') and enabling the 'Sheet Line/Area Color'. This places a white (by default) area behind the PCB. How do ...
AngeloQ's user avatar
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2 votes
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PCB design review (Altium)

I have recently designed my first PCB using Altium and I am seeking feedback on it. the PCB stack-up is 4 layers (signal, GND, GND, signal). The PCB includes various components such as a STM32, 3.3 V ...
Soliman's user avatar
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Altium Polygon Custom Queries keep disappearing

I've had this problem with Altium custom queries for as long as I can remember, and I'm tired of dealing with it. So I wanted to post my question about this here to see if I can get some input. I've ...
Jay's user avatar
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How to add text on PCB Pads?

How to add text on PCB Pads in Altium Designer I just this Image Im Interest to known how to do this
Monesh Rathod's user avatar
2 votes
1 answer
200 views

Contains floating input pins

I have a error in my schematic "Contains floating input pins": This error cause an issue apparently, the issue is that, When I update the Schematic to see the footprints in the PCB, the ...
Andromeda's user avatar
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Request for Review: First PCB Design - Feedback on Potential Issues or Missing Elements

I have recently designed my first PCB and I am seeking feedback on it to ensure there are no errors or missing elements. I have attached the schematic of my design. The PCB includes various components ...
noor aldine's user avatar
4 votes
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315 views

GND plane between tracks or tracks closer enough to remove the GND tracks

I am working in a design with many signals, no high speed signals, just some switches signals and encoders tracks. However I had problems with the ground uniformity sometime ago, therefore I would ...
Andres Romo's user avatar
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36 views

Altium annotation - no changes were made

Although I have made changes in the schematic file in Altium, it tells me that there is no change in the annotation process, but there is. What is this caused by, and how to solve it?
ertugruldugencioglu's user avatar
3 votes
1 answer
54 views

Cadance to Altium Conversion - Is it Hard?

Does anyone know how much work is required to convert Cadence PCB design files to Altium importable files? I've been told it's the equivalent of 2-3 months of work. I'm slightly dubious but I'm ...
Lpaulson's user avatar
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MS assembly Top layer

Would you please let me know why do we need MS assembly Top layer in a PCB? What is the application?
Andromeda's user avatar
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60 views

Why is Altium giving me a strange clearance message?

I'm using Altium 24.1.2 to design a multi-layer PCB, and I'm using the "Full-Stack" via rules to reduce the sizes of vias in some layers. I have done this successfully on other PCBs. ...
Rocketmagnet's user avatar
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Net does not show any connection in PCB

In the following schematic I have a net called "IR_VCC_MCU", which is connected to another schematic sheet as you can see in the second schematic: But the issue is when I update the ...
Andromeda's user avatar
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Routing in Altium Designer

During routing I faced a very strange issue, when I want to connect my routing to a resistor pin with the same net name, Altium does not allow me to do so: Would you please let me know what can be ...
Andromeda's user avatar
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1 answer
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How can I display footprint in PcbDoc?

The following is a snippet. I have tried to attached footprint to schematics in Altium. But this DIP wouldn't show up in PcbDoc when I executed the changes. And Altium suggested me removing this ...
kile's user avatar
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Is there a way to say on Altium Designer schematic that a component's pin is not connected?

Is there a way to say on Altium Designer schematic that a component's pin is not connected?
alvaro562003's user avatar
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1 answer
72 views

Saw tooth orange sign appears when connecting wire to a component pin

I see in my schematic that when I connect a wire to a component pin a saw tooth orange sign appears on the pin: Does this representing an error? and how can remove it?(Nets containing floating input ...
Andromeda's user avatar
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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
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1 vote
1 answer
25 views

Room Design With Slight Variations?

I'm working a pcb with multi voltage regulators on one board. For the duplicate voltage regulators, I'm using rooms to duplicate the routing and layout. However, for some of the peripheral components, ...
itisyeetimetoday's user avatar
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0 answers
48 views

Design rule error

I just made a PCB and updated the component form schematic to PCB:I even did not do any routing, but as you can see for two of the components (U4-U5-U3-U1-U2) I get some errors, what is the reason and ...
Andromeda's user avatar
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1 answer
55 views

How to select resistors for MOSFET Gate terminal?

I need to design Buzzer circuit. While i searching for reference design in google i saw one design based on buzzer, Here they drive a buzzer by using MOSFET. Here My doubt is, they used R23 & R24 ...
Kuralmozhi's user avatar
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37 views

Footprint library in Altium

Normally when download a chip library form websites, in the PCB library part in Altium, we will see 3 different footprint as follows: What are the differences among these three? Regards,
Andromeda's user avatar
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1 answer
67 views

Should I connect my mechanical spacer pad to GND?

Is there any advantages for connecting the mechanical spacer pads on the corners of the PCB to GND? 2D view: 3D view:
Andromeda's user avatar
  • 477
1 vote
0 answers
52 views

Searching the Spice model of the Liteon optocoupler LTV-817-A

I start learning simulation with "Altium Designer". Unfortunately, i did not find the spice model for the Liteon optocoupler "LTV-817-A". Do you know where i can find it or a very ...
alvaro562003's user avatar
1 vote
1 answer
39 views

How to I set DRC rules for a specific BGA component?

I need to set the DRC rules for a BGA component. That's because JLCPCB have unique capabilities for BGA packages. In this case I need to have a unique clearance for my BGA component. I want to have ...
euraad's user avatar
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30 views

Two different snap to Grid area in a PCB

I one of my projcts I faced with an PCB that there are two regions with different snap to grip values (software Altium Designer): Why would we need this in a PCB? How should I make it or remove it?
Andromeda's user avatar
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37 views

Altium Designer Active BOM not showing Manual Solution entry in Excel

I'm using the Altium Designer 24 Licence version. While generating BOM using Active BOM in not get data of Manual Solution created by me in the Excel file. I'm not getting price of first 3 component ...
Monesh Rathod's user avatar
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1 answer
80 views

ALTIUM Creating a pattern between unions

I have repeating ADC channels in Altium, 8 channels. I created different unions for all channels. I made an arrangement for the 1. channel. Then, I selected the first channel and the first union and ...
Electronx's user avatar
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1 answer
38 views

Altium designer DRC Configuration

In my schematic, I have jumpers to separate the power of an IC from the supply rails as follows: I have many of these jumpers in my circuit, when I run DRC, it says all the Vn net should be connected ...
Andromeda's user avatar
  • 477
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1 answer
65 views

JLPCB Design Rules for Altium CircuitMaker

What is the right design rules from JLCPCB? When I look at the electrical clearance from JLCPCB, I find: Via to Via (Same net labels): 0.254mm Hole to hole (Different net labels): 0.5mm Pad to pad (...
euraad's user avatar
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0 votes
2 answers
64 views

making NPTH Pad hole as blind or back-drilled in Altium

Is it possible to make a mounting pad hole as blind for bottom layer only? If it is possible then how this can be done in Altium? I am designing a 6-layers PCB and the requirement is that on the ...
Mohsin Shehzad's user avatar
1 vote
1 answer
46 views

ALTIUM SPICE Simulation: MOSFET switching power

I am trying to simulate a switching MOSFET circuit in Altium, and I'd like to get a energy measured during the conmutation. So far, I could simulate it properly, but I can't find the integral ...
Alber's user avatar
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1 answer
37 views

Multilayer pads and track error

I'm working on a PCB and I struggle to understand why i get violation from this: I did not modify the rules and the only clearance ones are a <0.254 mm on pretty much anything. The thing is that ...
Shynord's user avatar
1 vote
1 answer
27 views

Delete part of plain in 3Th layer of altium

I am trying to split the GND and power inside the 2nd and 3rd layers, however, there is some dead copper that I can not delete, could you pls tell me how? this picture below is a part of Plain I want ...
S2G's user avatar
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1 vote
1 answer
57 views

How to Add White Sheet Page and Template to Altium PCB Doc?

I want to add this kind of white sheet page to my PCB layout. Can anyone can help me with this? There is no option sheet template for PCB.
Monesh Rathod's user avatar
0 votes
1 answer
110 views

How to align components in Altium designer?

I am completely new at PCB design, finally finished the schematic and component search, you guys may have seen my last manic questions. Figuring out how to do the simplest things like delete a 3D ...
Visioncoop's user avatar
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0 answers
29 views

Altium schematic: component comment color getting overridden

I have a problem with setting the color of a comment for certain components in a schematic drawing. I want to be able to override the default color by some other, but it keeps getting overridden by ...
LJC_FEAS's user avatar
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0 answers
23 views

Altium Polygon clearance in Room

In altium i have two polygon which flows inside a room and also outside that room. I have defined in room clearence between 2 polygon is 15 mils and outside the room is 40 mils. But the clearence is ...
Saiteja C's user avatar
0 votes
0 answers
57 views

Altium coplanar waveguide ground clearance rules

I am trying to route 50 Ohm coplanar waveguides in Altium for some 2.45GHz circuits. I have defined my stackup and impedance requirements via the layer stackup manager / impedance calculator, and have ...
ihunter2839's user avatar
3 votes
1 answer
140 views

Altium schematic templates not showing up correctly when applied to schematic

I'm not sure if this is the right place for this question, but I haven't been able to get any help from Altium support and have been trying to solve this for quite a while. I've created 2 schematic ...
RobotGuy's user avatar
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1 answer
166 views

Convert Altium PcbDoc file between binary and ASCII without Altium

As Altium PCB file format support, we can save PcbDoc as binary or ASCII. https://www.altium.com/documentation/altium-designer/pcb-dlg-confirmfileformatformfile-format-pcb-ad?version=20.2 Is there any ...
NEET's user avatar
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0 votes
2 answers
46 views

Altium custom query allowing specific pad to be closer to the board edge

I have a PCB Edge connector in which two pads are a bit closer to the edge. My default rule is >=0.5mm, but for those pads I would like to set >= 0.35mm. I tried to write a custom query, but ...
nowox's user avatar
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0 votes
1 answer
42 views

How to center two pads in Altium?

How to center two pads in Altium? I usually drag the component pads to perfectly center it but is there any better way to do this; any shortcut?
Monesh Rathod's user avatar
1 vote
1 answer
181 views

Altium Designer 24: directives on schematic, yet "No differential pairs in design" error when routing

I want to create an USB differential pair. I added the nets, name equally but changing P and N as the image shows: SCH to PCB has been updated. Project comparator is enabled. No differential pair ...
Gonzalo García's user avatar
0 votes
1 answer
37 views

I am not able to see trace attached to component while dragging component in Altium

While dragging the component in Altium, I cannot see a trace attached to the component. I checked all the settings, I even reset all settings but it is still not working. Can anyone help me? I want ...
Monesh Rathod's user avatar
-1 votes
1 answer
35 views

Altium CircuitMaker - Polygon Pour issue - Does not apper

I impored a model from Altium Designer into Altium CircuitMaker. When I updated my Polygon Pour, then the total orange area (GND plane) disappear. But it's still ...
euraad's user avatar
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