Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [component-selection]

All related to methods to select the correct components and/or component values to specific applications

Component selection is an important part of electronics design/prototyping. it is related to all the methods, opinions and rules of choosing components to certain applications. It could be selecting specific passive component values for a specific application circuit, choosing IC's for a determined task, and so on.

439 questions
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What is the "ammo" packaging method when ordering through hole parts?

I'm familiar with bulk, tape and reel, cut tape, and tube, but what is "AMMO?" Source: Fairchild 2N3904 datasheet, page 2
JYelton
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How do you work out ripple current for a Power supply design

I hear the ripple current rating of a cap is important because caps have internal resistence which can cause over heating of capacitors. I was wondering is there any general rules a professional engineer would follow when designing a linear supply?
Ageis
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Allow an analogue signal through unless a digital signal is present

Does a component exist that allows an analogue signal through until it receives a digital 1, then allows that digital 1 through? As an example: Analogue sine wave going 0V to +5V is only input, output is the exact same sine wave +5V DC input turned…
Corsaka
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Help Getting Chip Part Number, Logic-Driven DIP 12V/24V Power Control

I am planning a future project, but I need the ability to have a 5V logical high enable a 12 or 24V source from an external supply, in a standard DIP package. I remember using something exactly like this YEARS ago in high school, but I cannot…
chronotides
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Finding the resistivity of high resistivity liquids

I'm working on a project to determine the resistivity of 1,1,1,2-Tetrafluoroethane which is estimated to be around 10^14 ohm-cm. The problem is, the most sensitive commercial conductivity sensors for liquids available only measure up to 10^10…
J. Doe
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How to select IC components by just footprint and low price for Pick-and-Place testing?

I am very familiar with the usual vendors for components, and how to select parts for a design, including package and footprints. However, I'm looking for an efficient way to track down 'throw-away" parts that we would use for tuning our…
gwideman
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Search engine for popular parts

I'm using OctoPart dozens of times each day to check availability, pricing, specs, datasheets etc. However, I sometimes look for "popular parts", either when specs aren't that special or as a starting point to find suitable components. I know that…
Crazor
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Reverse Search NTE

Is there a way to reverse search the NTE site? I would like to plug in an NTE part number and see the equivalent vendor components. This would give me access to example circuits and development boards.
Seti Net
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How to choose equivalent transistors for replacement

I'm working on replacing some power transistors in an old power supply. One of the transistors that I need to replace is an old MJ900 pnp power transistor with a newer close to equivalent one since it's hard to find the originals and or expensive.…
fbmdude235
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Is there a process for choosing between similar board-level components?

I am working on my first small PCB and I have a good idea of the types of components I need to use. However when I get over to Mouser Electronics and start punching in search criteria, I am often still left with 20-50 results. I understand that…
Austin Fox
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Determining component design age

Is there a way to see when a component was designed without opening every datasheet? I look at some TI LED driver parts first released 2007, revised 2016. Is that datasheet or component? Does it matter? Are new technologies much different?
Joshua Jenkins
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In-line series identifier (eg. fixed bit flash) component

I'm looking to make a necklace of "charms", each having a different shape and containing a WS2812B (an individually-addressable RGB LED using a PWM-based single line protocol in series). One of the aspects of this is that I'd like to be able to…
Stuart P. Bentley
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Material selection for conductivity electrodes

I was wondering what kind of properties i should be looking for when selecting ideal materials for electrodes in a conductivity sensor measuring the conductivity of liquids (1,1,1,2-Tetrafluorethane). The liquid is really resistive (about 10^14…
J. Doe
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How to calculate resistivity from this cell design?

I was wondering how/which area and distance values are calculated for a concentric 2 electrode conductivity sensor (below) when trying to calculate the bulk resistivity of a fluid. The blue is the outer electrode and the green is the inner electrode…
J. Doe
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Is multi channel transceiver capable of receiving simultaneously from multiple transmitters?

We are in the process of designing a system that requires transmission of data from a sensor nodes to receiver at processing node.Later on,the receiver node can send(transmit) certain commands/instructions to the sensor node.There will be…
Deepak Singh
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