Questions tagged [enclosure]

An enclosure is a box to hold your electronic device.

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How to wire and mount board in an electronic enclosure for robustness?

I need to build an enclosure and for the electrical part. I want to put all electronics inside a small box. I want the enclosure as robust as possible for vibrations transport etc. Some part of ...
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Material thickness for UL94 compatible overmolds?

I would like to overmold a PCBA which needs to meet UL 94V-0 requirements. For previous shell-like enclosures we would just keep everything above the minimal approved thickness specified in the ...
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Using a USB adapter inside an enclosure?

I want to make a device that uses AC 220-250V power (to control relays to switch devices on/off) and prefer a single wire (+/-/gnd) to a wall socket box (thus not a separate 5V adapter). Would it be a ...
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How do I use a heatsink in a sealed enclosure?

I'm working on a project with a set of individual LEDs (datasheet) permanently set up in an outside setting in winter, at night. I need to build separate enclosures for each of the LEDs because they ...
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Safe Enclosure for Mains Powered Project

I am working on a project that uses 120VAC power. I have made a lot of enclosures for low voltage projects in the past, but this is my first high voltage project that needs an enclosure. I am ...
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3 answers
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Safest way to ground a metal enclosure

I am currently building a nixie clock with some high frequency components (GPS) and I am planning on putting the clock in a metal enclosure. The highest voltage used in the clock is approximately ...
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Providing sufficient power to multiple components inside of an enclosure with one power input [closed]

First of all, I apologize ahead of time if my terminology is a bit off. I'm more of a software guy, so the hardware side of things is a little tricky for me. My problem is as follows: I'm building a ...
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5 votes
3 answers
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IP64 PCB connectors to avoid wirings

To minimize the costs for wiring an electronic enclosure, often designers put connectors at the edge of the PCB, that fit in slots made on the enclosure walls. The most common example is a mini PC: ...
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Solid State Relay Heat Release

I want to use a SSR (AD-SSR6T25-DC-280A) to switch on and off a 24 VAC water solenoid valve. The solenoid has an in-rush current of .9A, with a 400mA holding current. I want to mount the SSR in an ...
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Mounting PCB in extruded aluminum housing

For a small hobby project and to learn a bit about electronics, I would like to make a DC/DC uninterruptible power supply. I really like the look of the extruded aluminum cases. However the off the ...
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Troubleshooting component failures in a metal box (that's next to an air band radio transmitter)?

I have a little project that's been experiencing component failures, and I'm having trouble figuring out what to do about it. I think the issue is ESD but that's just a guess. Also I'm a total noob so,...
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Housing a Power Supply

This is an extension to the question "Safely housing a power supply" asked by Harry Braviner. I plan to use a very similar power suppy as the main compnent: In my case the need is to power ...
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1 vote
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Small enclosure. Waterproof cable entry

Have a 5mm diameter cable entering a small enclosure. What's the best way to seal it? I was thinking neutral cure silicone. Are there better solutions? I know cable glands are a popular way of ...
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Finding the exterior dimensions of a USB type-c receptacle

I'm going to be using this USB type-c receptacle for my project. For this project, I need to make a cutout in my enclosure to make this receptacle fit. I consulted the data sheet and found technical ...
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1 vote
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How do I properly ground DC and AC in the same enclosure (DIN rail)?

I am building an electrical panel with AC and DC supplied power. My AC ground wires connect to a green DIN rail connector which has metal on the bottom of this terminal and connects to the DIN rail ...
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How do I properly ground AC terminal blocks on a DIN rail and respective back plane?

I am building an electrical panel with AC and DC supplied power. My AC ground wires connect to a green DIN rail connector which has metal on the bottom of this terminal and connects to the DIN rail ...
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Can metal electrical panels have a non-rectangular or squared shape?

Standard metal electrical distribution panels are rectangular or square shaped boxes. Is there any standard - IEC, NEC, etc.- contraindicating the manufacturing of a custom shaped box for an ...
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Tweeter speaker enclosure size and material

I try to make a system that generates high frequency tones ( 12-17kHz ) only. Use some cheap tweeters like : https://www.banggood.com/100W-Piezo-Horn-Speaker-Tweeter-30KHZ-Piezoelectric-Head-Driver-...
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Why do some PCBs have exposed copper along the edge even when mounted in plastic enclosure? [closed]

I've already read about reasons for exposing copper at the perimeter of a PCB (i.e. Why do some PCBs have exposed plated perimeters?). It seems that the main reason to completely expose the copper ...
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How are components typically connected to a PCB when they are mounted in an enclosure?

Many small speakers are designed with screw holes to mount them in enclosures. They also have connectors to solder wires so they can be electrically connected to a PCB. How do I do something similar ...
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going from 2AWG wires down to 14AWG

So I basically have a 2 AWG power wire, but I want to end up with about 5 or 6 14AWG wires so I can put the power through a connector. Does anyone have methods of going from a 2AWG to multiple 14 AWG ...
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Safety when creating electronics enclosure

I'm designing an electronics enclosure to be placed in series with the power cord for a device for control purposes and would like to know safest methods to do power breakouts within the plastic box. ...
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Do I glue the screw when mounting the PCB to enclosure or not?

Well, this is a handheld device we are developing at our firm. We bought the enclosure from a chinese man. in AliExpress. It's made out of ABS. The device is going to be used in an industrial site. ...
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3 votes
1 answer
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PCB Mounting solutions in outdoor enclosure?

I've completed the design for my pool timer and now I'm down to designing how this board will actually hold itself inside an enclosure. I already have a box that I'd like to re-use. It looks like ...
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Is it reliable to use old computer hard disk as an external hard drive to store data? [closed]

I have a hard drive which cannot boot windows but works for even at higher transfer rates also its 6 years old, I found cheap enclosure SATA to USB 3.0 enclosure that works for even 100Mbps transfer ...
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Glue connector to metal/resin case

Want to use this type of connector https://cletk.en.alibaba.com/product/60724170404-804809515/Usb_Cable_Charger_Magnetic_Dc_Power_Cable_Connectors_Power_Adapter.html?spm=a2700.icbuShop.41413.12....
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2 answers
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Power connector for small product

I have a small (50mm x 30 x 12) battery-powered device to which I want to add a charging connector. I've been looking at panel mounted connectors such as this https://www.mouser.co.uk/ProductDetail/...
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3 answers
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Air circulation and condensation in custom enclosures for outdoor project

I am designing 6 custom enclosures in mild steel to be placed outdoors for 5 months in London UK. They will be interconnected, only one will contains 4 power supplies, all with conformal coating and ...
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1 vote
1 answer
206 views

Which material enclosure to avoid impeding signal of Bluetooth and wifi?

I’m making an enclosure for: https://www.digikey.in/product-detail/en/ESP32-PICO-KIT/1904-1030-ND I read that Bluetooth signal can be impeded by 37% by a plastic case. If that is so, then how does ...
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1 vote
2 answers
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Aligning PCBA on a plastic enclosure

I am trying to align a PCBA very accurately (within +/- 0.5mm positional tolerance) on a plastic enclosure. I'm thinking about using two 2mm diameter dowel pin that is press-fitted into the plastic ...
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Packaging PCB and battery inside enclosure - foam

What's the name/type of the dense foam that's generally used in consumer electronics to stop components from vibrating around and tightly packaging everything together? In my case, this would be for ...
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Do enclosed switching power supplies follow any standard for their chassis size and mounting hole distances?

Do enclosed switching power supplies follow any standard for their chassis size and mounting holes distances? or each manufacturer has its own conventions?
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4 votes
1 answer
162 views

Where to measure ambient temperature limit inside of an enclosre?

In a project, we are to place several components inside of an enclosure. Some of these components are to be considered safety critical, and their specified operating conditions must not be exceeded. ...
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1 vote
2 answers
2k views

WiFi Module inside a metal body

I am using ESP8266 (2.4GHz wifi) in my product which has metallic enclosure on outside but only plastic on the other side. I will be placing this device outside home near gate. Will it be problematic ...
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Should I ground PCB to an aluminum enclosure when using in car?

I have been working on a bluetooth audio adapter for car, and I plan to put it in a metal enclosure when it is finished. The bluetooth adapter is very low power and I'm powering it directly from the ...
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3 votes
0 answers
235 views

Enclosure/boxes for high voltage PCB

It is time to choose the proper enclosure for a high voltage PCB. We will need to do holes for LV external connectors and external connectors for high voltage wires. I was looking for standard boxes ...
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3 answers
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Electrical Standards - Earth Wire at Low Voltages?

I got a question about safety standards: I'm designing a consumer device and I'm not sure whether I need an earth wire. I have an AC-DC converter plug that outputs 5 V and up-to a maximum of 1 A ...
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2 answers
294 views

How to keep users from breaking push button switches

I'm designing an enclosure for a device with a push button switch. The external button on the enclosure is physically large so I am concerned people will apply too much force and break the switch or ...
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9 votes
1 answer
593 views

Are these (dis)assembly screw symbols standardised?

Sometimes there are these two half-arrow symbols on PCBs and on enclosures. See the images, for examples. Those symbols are often placed near the screws, that are to be unscrewed upon disassembly. ...
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Placing piezo disk in vibration sensor

I am designing a vibration sensor in enclosure to be placed on vertical surfaces, like windows, doors, etc. My first try was with ready made sw420 module, but looks like it is to sensitive for my ...
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4 votes
1 answer
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Grounding PCB Within Aluminum Enclosure

I have been doing some research on this question and, while I found a number of questions here asking something similar, I don't quite get the side-by-side comparison I am looking for. Therefore I ...
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Durable, UV-resistant labeling for electronics enclosure

I'm not sure if this is the right forum for this question. I'm asking here in hopes that someone has dealt with this. If this is the wrong forum, please do not vote me down. If necessary, I'll simply ...
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3 votes
4 answers
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Heat dissipation by convection for ICs placed upside down

I'm currently designing a PCB with a couple of fast electronic elements (600MHz ARM, DDR3 ram etc.) and I'm quite puzzled which layer should those elements be placed upon. The product will be closed ...
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9 votes
2 answers
1k views

Does paint affect EMI ability of enclosure?

This could be a very stupid question, but when it comes to RF you never know. Does painting (non-conductive) over the top of a grounded metal enclosure affect its ability to absorb/block RF ...
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2 votes
1 answer
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Identify this packaging

I've seen this packaging used by many companies, specifically in mobile equipment, automotive ECU's, marine, and other harsh environment applications. I doubt all these manufactures are making the ...
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Mounting Lithium Packs in Enclosures

I am planning to use a battery cell similar to the picture below in a product I'm designing. Is it ever appropriate to mount these directly on top of a PCB? (all components will be on one side of the ...
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1 vote
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Can water condensation appear on PCB in IP67 enclosure box?

Does IP67 box protect PCB from moisture? If not, is it OK to have an outdoor air humidity sensor soldered on PCB in IP67 housing? Also if it doesn't block moisture, is there any reason to use IP65/...
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1 vote
1 answer
174 views

Do metal enclosures block radiated emissions better than plastic ones?

Why are some enclosures made of metal instead of a lighter insulated material? Is there any electrical reason for that? Will such enclosure block radiated EMI in and out better than a plastic one?
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Is the meshed metal cage connected to the earth terminal in these embedded power supplies?

The SMPS below has screw terminal mains entry as line, earth and neutral: Is its meshed metal cage in general connected to the earth terminal internally? I could check it if I had one but at the ...
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1 vote
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PCB hanging upside down in its enclosure

Would this be a problem in a moderately high vibrations / shocks environment (passenger car interior) ? The screws are 1.8 mm thread diameter, 5 mm long, the PCB being some 90 x 60 mm with nothing ...
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