Questions tagged [ipc]

IPC, the Association Connecting Electronics Industries, is a trade association whose aim is to standardize the assembly and production requirements of electronic equipment and assemblies.

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47 views

Altium IPC Footprint wizard Generating Dodgy Components

I've started using Altium Designer 14 after a break and needed to build some components I started with a EP4CE10 FPGA, but I noticed that despite following the component guidelines as close as ...
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2answers
76 views

Reflow soldering, pin longer than pad?

I was designing the footprint for this FPC connector: Datasheet The recommended land pattern is shown here: The issue I encountered is that the pins on one side protrude outside of the pad: I ...
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2answers
549 views

‘One for all’ standardized land pattern v.s. specified land pattern in datasheet

I’ve designed lot of ‘simple’ PCBs for hobby and proof-of-concept purposes, but never for (mass)manufacturing. In order to do so in the future, and further expanding my design skills and knowledge, I’...
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2answers
188 views

High Voltage Capacitor Lead Clearance

I am designing a high voltage board, 10,000 VDC. I wish to use a suitably rated capacitor such as the DHR4E4A102K2BB. When I have been studying the ...
4
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2answers
120 views

Surface Mount package standards guide?

Is there a universal guide-line for the mechanical dimensions and tolerances of Surface Mount packages across the industry? I'm very new to SMT machine programming (<1 year), so I've been trying ...
11
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1answer
590 views

Do I need to supply IPC documents to PCB fab house?

I would like to have a PCB design manufactured and plated with an ENEPIG finish. I have found a fab house that states they can perform ENEPIG finish and their site lists the plating option as one that ...
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2answers
445 views

PTH drill diameter do the IPC take the pin distance in account?

I wonder if the IPC take the Pin distance tolerance in account for the drill diameter? (see p in pic). I can't find any guidelines for it anywhere. Or is it just so that it's implicitly,common sense ...
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2answers
457 views

SOT23-3 Pin out: IPC or Datasheet?

IPC-7351 gives a pin out and a 0 degree rotation for SOT23-3 packages; but, IC vendors use many different pin numberings. When I make my library component should I use the IPC pin numbering for all ...
8
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1answer
2k views

Why do KiCad's library footprints for 0402 resistors and capacitors have different pad sizes? [duplicate]

KiCad's default library footprint for C_0402 is longer than R_0402. Why?
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3answers
2k views

IPC Specification for pad width vs. pin width (SMD)

I am working on a board that has a fine-pitch component (0.35mm). Each pin is 0.15mm wide. I received a question from the manufacturer asking if they could adjust the pad width from 0.22mm to 0.18mm +/...
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2answers
130 views

Angle of wiring

I´m relativ new to PCB designing and therefore I have two questions. I started to design a simple 1-Layer PCB with a circular shape. In the Internet I found that a wire must not be "too long" ...
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1answer
3k views

Which IPC standard provides land pattern dimensions?

This answer says it's IPC-7351, but I'm not seeing anything about land pattern dimensions in the table of contents. I'm wanting to make footprints in Altium and I found the IPC Compliant Footprint ...
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1answer
3k views

Definitive land pattern for 0603 SMD capacitors?

So, I am trying to figure out what pad size to use for 0603 (imperial) SMD capacitors. The datasheet for the particular capacitors I plan to use provides part dimensions but does not recommend a land ...
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2answers
4k views

Why there is IPC Level A and B?

Why there are IPC footprint Levels A and B? I believe it has to do with the standard related to tape and reel feeding, but I will appreciate a more elaborated answer.