Questions tagged [components]

Components are the most basic elements in an electronic circuit. Characteristic is that they're in a single package. There are passive and active components, from as simple as a zero -ohm resistor to as complex as a multi-billion transistor IC.

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Source for flexible, stranded wire

Can someone suggest a source and part number for insulated, stranded small-gauge wire (around 22AWG) that is flexible and doesn't hold its shape? Something along the lines of the wire found on ...
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Searching for electronics components in mouser.com

I'm trying to get into electronics and read that mouser is a good place. I wanted to buy a couple of leds, just like this one. But searching for "led" or "simple led" yields pages and pages of results....
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What is this blue capacitor?

I am not very experienced in electronics. I have a water softener installed at home, and recently it stopped working. I was looking for things that could have failed, and found this board with what ...
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Identify this component with a weight inside a cylinder

This component was pulled from a device that was used to detect movement. When I first saw this part, I thought it was an electrolytic capacitor, but upon closer inspection, I found that if I shake ...
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Altium parts management in a small startup

I recently joined a small startup as the only HW designer (working in Altium 18) and am looking for ways to optimize my design time without having access to a full-fledged CAD team. In my previous ...
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How can you evaluate if a component is going to have a long life (manufacturing)?

Before I pick a component for a PCB, I am trying to make sure it would not become obsolete in the near future because it's a mess and it happened to us a few times. How would you check if a chip is ...
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Which diode to use on my RC switch debounce circuit?

I am choosing parts to build an analog RC switch debounce circuit. I plan to implement the circuit described here: http://www.ganssle.com/debouncing-pt2.htm (see "An RC Debouncer"). (source:...
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Advantages of Isolated DC-DC Converter over non-isolated?

I am trying to understand in what type of situation I will need an isolated DC-DC converter instead of a non-isolated one. What are the design criteria that can lead one to one way or another? In my ...
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Component Identification AHC373

I'm trying to pin down this component Googling has got me to these two but I can't work out the difference or if they match. SN74AHC373DW SN74AHC373DWR Really appreciate some help IDing it. Thanks
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Identify a light emitting component

here's a picture of component that is not a LED but emits light, it's a tiny glass light bulb with a resistor and a red plastic case for mounting it.
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Other name for VGA socket?

I need a VGA socket for my project (preferably PCB mounted but that's not reevent probably). But I can't find such a thing at any of my usual suppliers. I presume they have some other name I need to ...
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Why some through-hole component leads are ferromagnetic?

I was surprised when saw a magnet picking some random 0.125 W resistors leads. I was always thinking that leads are made of copper alloy. Are there some subtle reasons to make them using metals other ...
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Help Identifying Component from guitar amp

I'm attempting to troubleshoot an old guitar amp and this component appears to be blown out. Can someone here help me identify this component?
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What will it take to build a small bluetooth device? [closed]

I am new to this part of StackExchange. I am doing a project that requires me to keep track of Bluetooth devices. So I want to build a tiny Bluetooth device that can be attached to almost anything; ...
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What electronic component is this? It says "K103M" on top

What electronic component is this? My Multi-function Tester says it is a capacitor with a value of ~8958 pF (= 8.9 nF) It says "K103M" on top of it. Could this mean that it should be 10*10^3 ...
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Identify a cylinder or thick washer for bolts

It must be obvious to you but I can't figure out the name of that part which I need to replace. It's added to the bolts that hold the PCB to the case so as to create a large enough gap between the two....
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How does one find an equivalent component?

I was looking for an equivalent MOSFET and haven't had any success. I'd like to know if are there any websites or software which gives a list of alternative equivalent components? Edit: The purpose ...
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How to identify SMD device marked LEFBV?

I have a SOT23-3 component marked \$\underline{\textrm{L}}\,\underline{\textrm{E}}\,\overline{\textrm{F}}\,\overline{\textrm{B}}\,\textrm{V}\$ as shown in the following images: The following ...
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Are there gaps in the 2% resistor standard values?

I was reading the Wikipedia entry for E-series resistor values, and I decided to graph the values on a log plot. The plot shows the values nearly evenly spaced, which makes sense because adjacent ...
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Help identifying component in digital thermometer

I am a High School Junior doing a product breakdown for a school project, and I was wondering if one of you could help me identify a component or just tell me that it is a type of Chip On Board (which ...
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Component usage in this constant-current source circuit

In the April 2014 edition of Elektor magazine, they present a circuit for a high-precision current source device (page 42). It allows the user to select a constant-current between 10nA and 20mA. They ...
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240 views

What is this three pin, cyclindrical component?

I'm curious as to what the component is on this PCB. It is surrounded by a polyfuse / zener arrangement (for overvolt / fusing) - I believe it is something to do with the AC input but am not ...
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581 views

What component has the reference designator RY?

I found a component designated RY8015 which I don't recognize, shown on the photo below on an LCD TV PCB (the bulb-like part next to a green radial varistor). What is it called? What is its design ...
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Is there a good reason why TO-220 5-lead components have bent leads?

I've recently acquired some LM2596T-5.0 3A buck converters. They are TO-220-5L packages with bent leads similar to this image: I have seen other TO-220-5L components with straight leads like this: ...
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How to break components in SPICE?

I've been learning SPICE over the past few days, using the LTSPICE program. One thing that just escapes me, is how exactly do we know when a component's absolute maximum ratings have been exceeded? ...
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Mystery component in Selfie Stick? (iPhone)

What is the component inside an iPhone selfie stick? Testing reveals it is not a transistor. We have done some probing of it and come up with the following: The mystery 3-pinned component drops the ...
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What are the key differences between Tantalum and Tantalum Polymer capacitors?

I've noticed that most component retailers split these types, and am wondering what comparative differences there are between them. I know that "regular" tantalum caps usually use MnO2 as an ...
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What is this component and what is its use?

I found this in CRT TV on the CRT tube driver PCB. What are they and what is their schematic symbol?
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what kind of tape is used in electronic devices

I repair quite a few devices and one thing that bothers me is that when I remove some of the tape pieces they never go back down right. I was looking for some replacement tape and didn't know what to ...
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How to identify unknown component

I've recently got myself a bus pirate to read an EEPROM which is labelled fm24c32a since that's the only thing I could recognize on the board (the IC was covered by a blob). I managed to identify a ...
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How to tell if an electronic component is counterfeit?

I've been looking into sites (like Alibaba, etc...) for components, but they are usually at the price of the rain. How can someone know if a company or factory is not a scam and that those components ...
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How do you "shrink" electronic components, such as transistors, resistors and diodes?

I realize that these components have been shrinking in size. How is this process done? Should all electrical engineers know this?
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Cost effective way to protect circuit from overvoltage

Which is the most cost effective way to protect a DC circuit that requires 5V input (and draw up to 1A) from external power supply? Suppose that a careless user can accidentally attach an external ...
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Is it possible to make a complete analogy between electricity and something more graspable? (e.g. fluids)

A similar question has been asked here, but mine is more general. Here is the background: it seems to me that electricity is not so intuitive as it may sound. For example, many (unskilled, as I am) ...
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What is the name of this "plastic wire loop"?

Someone told me that it is called wire loop. I want to buy it, but I could not find it using wire loop as keyword
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What does this schematic symbol mean? (Circle with an arrow in it)

I've been looking at the schematics of the LM386 amplifier, but there is a symbol I don't recognise, it looks like a circle with an arrow in it (but it's not a voltage generator of course), can ...
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Is there any way to determine power rating of a potentiometer?

I salvaged a 1kΩ potentiometer from a broken circuit. Is there any way to determine how much power can it take without destroying it? EDIT Picture of the potentiometer: The distance between left-...
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What are the uses of Lugs/Ferrules?

I've seen various projects using copper lugs and compressing them with bench vices but what is the actually use? Can't you just use wires without the lugs? Image Source
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Replacements for a 4006 IC?

Im building a Nintendo 64 to PC adapter as outlined in this guide. It calls for two 4006 ICs. RadioShack did not have this type, but I was told the following two would work: LM339 or a LM324. Will ...
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Are these capacitors?

I've salvaged from audio system. Both have two contacts. Under , on the PCB plate there was "L704" and one loop symbol, which makes thing this is an inductor - what are it's properties then? It has ...
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What does this schematic symbol mean?

I'm trying to understand what the following symbol is for. It's found in this schematic.
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How to know the part number that I want? [closed]

I am new to electronics. But I got to know how to make circuit and make it work. Problem I am facing, I need to know the part number based on my requirement. Suppose if I want to buy an AND gate ...
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Identifying piece of circuitry on a PCB

I haven't done electronics for a long time but am doing some for a hobby project this weekend. I'm looking for some help breaking down/analyzing a circuit board I want to modify/hack: It's for 3 ...
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Soldering Tiny Leads?

I've got some really tiny leads on a USB port that I need to solder to a board. The local Hackerspace has a microscope that I'm going to see about using this for, but even a soldering iron is ...
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Does NRND spell the end for a niche product?

I'm just wondering about this. Luckily I'm not faced with the problem myself. If I design a product around a specific MCU and have that produced in a niche market, selling maybe a few hundred every ...
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Captive Nut For PCB Grounding

I need to affix a ground strap to my PCB. A strap similar to . Ideally I want to simply screw this to the board. Are there captive nuts available for this purpose? I can't find anything via a ...
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What is this IC marked C55?

I'm playing with a BroadLink module with a MT7681 IC onboard and I have found this IC marked C55 in the path of the UART_RX line. Any ideas of what it may be? Counting from the dot pins are RX_OUT, ...
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How to source this hook socket

I've been trying to find the name, part number, manufacturer and some vendor for this hook socket. I'm not even 100% sure that is what it is called. Do you have any information about it? Anything ...
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Using standalone smartphone camera

Is there any possibility to use smartphone camera modules without their smartphone? those modules are relativity cheap and provide good results, can someone explain how to do it?
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What does 3AG mean in "Fuse Block 3AG"?

I have read from a vendor website. It mentions 3AG fuse block. What does 3AG mean?

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