Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [spacing]

23 questions
33
votes
3 answers

Arduino pin spacing

How do you get around the annoying pin spacing on the Arduino? Where pin 7 and pin 8 are not standard spacing. Why is it set up like this?
mad_z
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4 answers

RS485 minimum node spacing - 3 x RS485 device on PCB

I would like to ask something about RS485 minimum node spacing which is described in (Page 5) TI Design guide I would like to create device which consists from 3 existing RS485 devices. My plan was that I put these 3 devices together on single 2…
Wojtkingson
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7
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3 answers

Prototyping a part with 2mm spacing on 0.1" matrix board?

I have an Airwave AWM682RX 5.8GHz video received and matching AWM683TX transmitter module. Oddly, one has pins spaced at 0.1", the other at 2mm. So, what's the best way to make a part with 2mm spaced pins fit on 0.1" matrix board?
Mat
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3 answers

Is current important for calculating spacing between traces?

Current is needed for calculating the trace width. Voltage is important for the spacing between conductors. Is the current in any way important for the calculation of the trace spacing?
user14665305
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3
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3 answers

PCB surface shim

We have a PCB with a detector that must be positioned at a particular height above a mounting surface. Our plastic parts are slightly undersized, so we must add some space (0.4 mm) between our PCB and the mounting surface in order to position the…
rothloup
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1 answer

How can be creepage between two conductor points be determined for HV pcb design?

I have read about spacing at HV design and it seems to say that there are two main standards to be followed: IPC or UL (IEC). IPC is a generic and commonly used. But UL is the best option for designs that will be used internationally. But I have…
Suvi_Eu
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2 answers

Can problems arise from mixing 2.5mm pin pitch components with 2.54mm through-hole protoboards?

I am new to electronics and from what I understand, most protoboards seem to be standardized on a 2.54mm (0.1") pin pitch. I am also aware that there are through-hole components which are manufactured at a 2.5mm pin pitch, namely JST…
Zhro
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2 answers

SOIC-8 IC input pins small spacing at high voltage

I'm looking at a high common mode voltage difference amp (AD629). The input voltage between the two input pins next to each other will be 150VDC. Normally the pads should be bigger on the PCB than the actual pin size. So between these two pads is at…
Momchilo
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2
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1 answer

Parallel bus trace width and spacing

I have been working on designing a PCB for a Z80 computer that I plan to sell a few times for interested people. The Z80 will work at a maximum of 8 MHz and has parallel lines going to a system controller and an SRAM chip. The board is 170x110 mm in…
Benedikt M.
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2 answers

How to calculate typical signal trace clearance?

Knowing nothing more than most of the signal traces on a project are 7.5mil and it's a high end audio product, i.e. it's not a high frequency or any 'advanced' application, what would be a safe minimal trace clearance between parallel-running signal…
Daniel Donnelly
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2 answers

Is this a "gapped" ferrite transformer/choke?

Here, two "E" cores are bonded together with brown epoxy. There isn't any intentional, visible gap, yet there are three bond points and that must introduce some gap... How are these considered: gap or no gap? Edit: There is no visible gap on the…
rdtsc
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Differential Impedance vs length matching vs IC manufacturer requirements

I'm working on a PCB with a USB 3.0 controller (TUSB7320, Texas Instruments) with SuperSpeed signals and High Speed Signals. There are some specific requirements about impedance and length matching. Until here all ok, but I have requested a budget…
Juanma
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Antennas- Spacing between Reflectors & Directors in Wavelengths

I’m building an antenna and I want it to connect to channel 6 on the spectrum allocation chart (2.437 GHz). I’ve calculated the lengths of the reflectors and directors but im just a bit stuck on the spacing between the reflectors and directors. I’ve…
Neamus
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Are there PCB connectors capable of suporting more than 3.5kV of working voltage?

I was thinking of a design for bringing VCC+ and GND to a board through a PCB connector. VCC = 6 kV. It comes from external source towards a banana jack within a metal case. The first idea was to fit the PCB design into this case. I don't find any…
Suvi_Eu
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Terminal spacing for 120-240V

I have a board (Krida electronics, not mine) that uses 2-pole PCB screw terminal blocks with 0.2" (5mm) pin spacing for Line & Neutral input. The conductive parts inside the block are very close together. Worst case scenario, there could be a…
Joshua Penn
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