Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [aluminium]

Aluminium (aluminum in American and Canadian English) is a silvery-white, soft, non-magnetic and ductile metal. By mass, aluminium makes up about 8% of the Earth's crust, where it is the third most abundant element (after oxygen and silicon) and also the most abundant metal.

18 questions
8
votes
6 answers

Reason not to use aluminium wires, other than higher resistance

So aluminium is 3.3 times lighter than copper (8.96 vs 2.70 g/cm3). And its resistance is only 55% bigger. So in weight/resistance ratio it is actually better than copper. Also it is cheaper. Why aluminium is not a primary choice in cables? Does it…
Ri Di
  • 753
  • 4
  • 15
5
votes
2 answers

Do EMC test houses typically accept copper foil in EUT?

Working with small volume product and tight schedule it might become an option to pass EMI limits by use of copper/aluminium foil on inside of enclosure. What is your experience with the labs on this point? Would they accept a device where foil has…
NoobPointerException
  • 730
  • 4
  • 18
4
votes
2 answers

Why do some laboratories use a multimeter on top of an aluminum plate connected to ground?

I was reading a laboratory to study some backgrounds about common mode rejection (CMR), when I saw this image: Does the aluminum plate connected to ground under the multimeter increase the reading precision or does it do something else? This is the…
Jjeico
  • 77
  • 6
3
votes
3 answers

Can I use a tantalum capacitor instead of an aluminium capacitor with an AP1509-50SG?

I am planning to use an AP1509-50SG converter in one of my projects. There is only a very small area to place components. Aluminum capacitors rated 300uF/16VDC or 330uF/25VDC have a large footprint area. I am thinking about using a tantalum…
Htekin
  • 31
  • 2
2
votes
1 answer

Drawbacks and disadvantages of insulated metal substrate PCBs

Insulated metal substrate (IMS) PCBs, with variants and names including aluminium base, metal clad printed circuit board (MCPCB) and thermally conductive PCBs have some sought-after features in terms of heat conduction and mechanical stability. What…
NoobPointerException
  • 730
  • 4
  • 18
2
votes
1 answer

leakage current of a 10uF MLCC compared with an aluminium decoupling capacitor

I am trying to track down a ~10uA current leak in my circuit. My PCB has this 10uF ceramic decoupling capacitor between 1.8V and GND. I cannot see it's ESR value in the datasheet so I do not know what leakage current I should expect. I also cannot…
JasonEdinburgh
  • 121
  • 3
1
vote
3 answers

How to apply thermal paste on a large surface (between IMS PCB and heatsink)?

I've got a project that features an array of ultraviolet LEDs on an aluminium board. This board shall be screwed to a heatsink. My problem is that I'd like to apply thermal paste to improve the thermal conductivity, but I don't know how. The area is…
Korbinian
  • 33
  • 3
1
vote
2 answers

What does "highest ionizing energy deposition" mean?

I am looking for how to compute the thickness of shielding materials and have found the following research: ISNPS Technical Report ISNPS-1-2013 Tai and El-Genk.doc (unm.edu) The report is mentions the „highest ionizing energy deposition." I have no…
Anna Koroleva
  • 227
  • 1
  • 6
1
vote
2 answers

How to design DC bus bars for batteries?

What factors should we consider for designing bus bars for cell terminals? Suppose I have LFP battery pack made up of 9 cells in series each having maximum of 3C discharge rate and a nominal capacity of 50 Ah with voltage range of 2.5-3.65 V. Each…
mod3k
  • 11
  • 3
1
vote
0 answers

oven rework - possible culprit?

These small LGA16 parts needed replacing: Desoldered them with heat gun, cleaned with acetone, put new parts into place, fixed them with this sticky aluminum tape, applied flux and put them to the oven: upped the temperature a bit on the soaking…
kellogs
  • 1,044
  • 9
  • 18
1
vote
1 answer

Does alumide provide any electromagnetic shielding?

Alumide is a new 3D printing material that contains aluminium dust. It is mechanically stiffer, but little is said about its conductivity and electromagnetic shielding properties. There is probably not enough of the aluminium dust in it to make it a…
h22
  • 881
  • 6
  • 14
0
votes
1 answer

Aluminium PCB - Bottom Entry Connector

Is there something like this connector that is easier to buy? I need to find something that lets me connect an aluminium PCB to an FR4 PCB with part of the enclosure between them. The part of this connector that sticks into the PCB is spaced from…
Dan
  • 133
  • 8
0
votes
1 answer

Do power inductors having an aluminum winding (or a light weight winding) exist?

I need the lightest power inductors possible. Do inductors having aluminum windings (or any light-weight winding) exist? I would also consider hollow-core wiring to be used at very high frequencies, like 2 MHz. At those frequencies, it would make…
MicroservicesOnDDD
  • 2,557
  • 1
  • 13
  • 48
0
votes
1 answer

Can inductive sensors work on anodized aluminum?

I was wondering if an industrial-grade inductive sensor can detect an anodized aluminum plate. From what I know, based on the working principle of these sensors (basically the metal is detected by its own magnetic field thanks to Eddy current) I…
Pedro Germán
  • 1
0
votes
1 answer

Insulated TOP3 triac soldered to Aluminum plate -- will it last?

So I ordered a cheap SSR from Aliexpress and it finally arrived. I immediately disassembled it to look what's inside. It wasn't so bad -- BTA40-800, MOC3063.. assuming the components are not counterfeit of course. Pcb has some flux left and triac…
rapucha
  • 101
  • 1
1
2