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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27 views

What is this SMD component, component designator B7?

What is this SMD component, with component designator B7 on the PCB?
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Is there a complied book/list of datasheets for the most common used electronic components, if not should I try to make my own? [closed]

Scenario: I'm an electronics/telecommunications student. When I'm working with circuits, I usually need the datasheets for pin-outs of chips. Normally, I get them from various sources. If I had a ...
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how can get a higher amplitude in this differentiator invertor amplifier?

Im a bit confused since Im missing how to control the output amplitude in this circuit it yields the next output AFAIK, the bias compensation resistor must be the same that the feedback one, and the ...
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2answers
260 views

Where (under what name) can I find these breakable female pin headers?

I'm looking for these pin headers: They're easier to work with than the regular pin headers because of the grooves. There are similar headers that are also breakable but with round sockets (I'm not ...
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66 views

What does PN mean on this capacitor?

What does PN mean on this capacitor?
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1answer
182 views

Proteus - How to manually load the schematic's components in the PCB view?

I have been doing nasty things with my proteus, and right now, I have a schematics that's well defined, but the components are not present in the PCB layout (therefore, I can't place them, as I can't ...
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1answer
92 views

Unknown component on PCB

I am trying to reverse engineer a PCB and I found this component that I don't know what it could possibly be. It doesn't have any resistance (open circuit) and it doesn't have any capacitance. On the ...
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1answer
63 views

Need help with a replacement thermistor

I recently bought a used IKEA ceiling light however when getting it home noticed that it seems the live wire is connected to a thermistor? which then has another short wire where you connect to mains ...
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1answer
425 views

Female-female connector, but what is it called?

Question What is the "official" name for this type of connector? (the large black box in the image) More info... I need the connection to connect two PCBs together as one was missing from a ...
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Thermal Characterization of Electrical and electronic components

I was searching online for a well defined and structured framework that deals with the Thermal Characterization of Electrical and electronic components, but was only met with several articles that ...
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2answers
123 views

What are these yellow parts that look like capacitors?

What are these components? They seem to be the same thing, but one has 2 and the other 3 pins.
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3answers
99 views

How to make force sensitive resistor energy efficient?

I'm trying to sense when pressure stops being applied between two surfaces with a small embedded device connected to a coin battery smaller than 50mAh. All I care about is if they're separated or not (...
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7answers
4k views

Parts shortage, no stock, what now? (canonical reference question)

As a small business, student, or hobbyist, sometimes the parts I need are unavailable (no stock anywhere). Maybe authorized distributor will take order but they will not ship for 10, 20, 30 weeks, ...
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2answers
978 views

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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165 views

Replacing a charged capacitor with suitable components to form equivalent circuit

If we have an initially charged capacitor (say 5V) and capacitance C, in a circuit, can we replace it with a constant voltage source of 5V and an uncharged capacitor with same capacitance C, both in ...
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88 views

Selection of MOSFET for flyback transformer switching circuit

I am working on a project that uses a transformer in flyback mode to create plasma arcing. It's based on a simple circuit that's available in a lot of DIY kits which uses a MOSFET to switch voltage on ...
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7answers
4k views

Is there any reasoning behind component names?

All the components I own have strange names, like a transistor called 2N2222 and a motor driver called L293D. When you see these kind of things writen down do you instantly know what it means or do ...
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6answers
199 views

Looking for a replacement rotary encoder, how do I select one? Are they all standard or universal?

I am looking for replacement rotary encoders for my Yamaha A4000 sampler. These samplers have a common problem where the encoders start to work poorly after time. It is Yamaha part number V4441800, ...
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369 views

Alternatives to Jumpers?

I have a need to be able to connect a lead on a circuit to 1 of 5 different other leads. I think it’s obvious how I can accomplish this with jumpers or DIP switches or encoders. The wrinkle here is ...
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2k views

What are these electronic components from an old radio?

I disassembled an old radio that I found in my attic and found some electronic components that I can't recognize. I think that the first component is an inductor. I'm pretty sure about that... But I ...
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2answers
278 views

Pin compatible shift register with open drain outputs

I'm looking for a pair of otherwise interchangeable 8 bit output shift registers where one has open drain (or open collector) outputs, and the other has "normal logic outputs" (ie a pull up transistor ...
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1answer
54 views

Component identification in a thermal device [closed]

I have a picture of a device's handpiece and I want to know the applicatioan of its components but I'm confused about one of them. Can anyone help me to figure out what this is component? (Marked with ...
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37 views

Identify these two components (presumably voltage regulators) - top markings "25M 95" and "812CC"

Below is a photo of the components. The PCB is 12V battery powered. It's still actually working and I'm just looking at its circuit to get some ideas for my project. I think the two components are ...
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2answers
237 views

Do you recognize this component 4A 0F3?

I'm attempting to fix an SMPS for a sewing machine that is having all of its outputs voltages a third from what's expected. I've replaced all electrolytic capacitors and nothing seems to be producing ...
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2answers
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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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1answer
167 views

ADuC702x MCU bandgap voltage reference question

I have recently started using the ADuC702x MCU family. I plan on using the analog to digital converter that comes with the MCU. The datasheet states that there is an internal 2.5V that it uses for ...
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63 views

Convert a through-hole type circuit board to SMD type

I want to replace the through hole parts of the following circuit with SMD parts (control section.) This is an 80W FPC using L6562A. Is this a straightforward action or does it require further ...
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Could anyone identify the manufacturer or a similar product to this ~6x7mm inductive charging coil?

I had this smart ring from a company called Oura, and I took my charger apart recently. Inside, I found an incredibly small inductive charging coil printed inside of a little FPC. Could anyone ...
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1answer
55 views

Identifying the manufacturer and specifications of W06M bridge rectifier

I've got a PCB containing the below-presented bridge rectifier. I searched for "W06M" however several parts with the same part number, but from different manufacturers, were displayed to me. ...
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2answers
71 views

Can a fuse (non-resettable) wear out over time?

If a given circuit (containing a fuse) operates perfectly and continuously, will there come a time when the fuse simply stops working due to age and wear (wear from passively passing current ...
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4answers
905 views

How does this glass-protected surge absorber work?

The component looks like this: Is there a gas that changes the electrical property of the material? It's the first time I've seen this type of component on a board, and I'm curious about its ...
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2answers
9k views

How could I identify this thermistor

I've been scavenging for components on a deceased gadget and I've found a thermistor I'd like to use in the future. The problem is there's no serial code printed on it. Without knowing the ...
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5answers
3k views

Manually removing bulk components from cut tape?

I ordered a bulk quantity of components for experimentation and they were shipped in a cut tape format. I've been removing components individually from the tape but it requires a large amount of ...
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1answer
59 views

How do I find the center of a part when making a footprint for a component that will be used in a centroid file?

Often the footprint I need is not in the existing libraries and I need to make my own. For example one of the dozens of micro USB footprints. When I make a footprint and then send for assembly at ...
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1answer
111 views

What are the components with the triangular symbol on this schematic?

This circuit diagram is of an Atari 2600. I have circled the components that I want to know about. Can you please tell me what they are and why are they used here?
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4answers
32k views

Standard nomenclature for component types

What prefixes should be used on reference designators for components of various types? I think we can all agree that "R##" refers to a resistor, "C##" refers to a capacitor, and "L##" refers to an ...
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1answer
274 views

Trying to identify SMD component from a Ps2 Slimline

(English isn't my first language) I'm trying to fix an old Playstation 2 Slim my cousin had that was turning off by itself after 5 minutes playing. After some search on the internet, I found that it ...
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1answer
60 views

Does anyone know the part number of this 900MHz LNA/PA front end IC?

Please see attached image. This IC is found on a 900MHz 802.15.4 wireless module, presumably working as LNA+PA, QFN16(?,not sure upon further inspection) package, with the following markings: 7 130 23 ...
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74 views

What is this component ? Negative tiny LCD glass?

I disassembled a ceiling projector clock to find out how it achieves its projection. I found a very small screen (or glass, see image) backlit by an LED. To build some projecting stuff, I would like ...
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1answer
76 views

Is there another name for "terminal ground bar"? [closed]

I am trying to source this part http://www.theelectricbrewery.com/10-terminal-50A-ground-bar, but I can't find it at digikey. Is there another name?
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2answers
64 views

THT components reliability and advantages for small scale production [closed]

Examining this question in the "manufacturing of not consumer electronics". I'm looking for an opinion by others about some statements that I take for correct. Are THT components in general ...
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Help identifying a 4-lead component for reordering - marked P&V 100487

The following components have the same identification marking and the same properties. as far as I know. The component is part of an diesel electrical generator controller and it connects to the ...
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1answer
115 views

Identify this burnt SMD component marked QA / RA14

I hope to repair a PCB for a hard disk drive which has a burnt out SMD component. It has a connection at each end, with a polarity(?) line at one end. It has "ON" in a circle, and "QA&...
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2answers
89 views

Creating a wire break alarm exclusively with surface mounts

Also called wire cut circuits, alarm circuits, etc. Basically a circuit that, when a wire loop is cut sends a signal out like a NO switch being pressed. I've made them before and it's mostly going ...
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57 views

ID of component on Dell G7 7790 laptop motherboard

First time posting, hoping for some help to ID a component on a Dell G7 7790 laptop motherboard. The laptop would not power on. DC socket is ok and getting feed to the mainboard. I noticed this ...
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2answers
1k views

What is this mains blade connector called?

I've asked around and can't find answers anywhere. I'm designing a PCB that connects to US-style mains blade connectors (that plug into the wall). I've found these here, but I need right angle ...
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2answers
55 views

Improving the duty cycle of a linear actuator

My understanding is that a linear actuator (LA) must have an off period after running on load to allow the motor and gears to cool to prevent overheating damage. I have a (12V 30W max) LA with a duty ...
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1answer
226 views

Help identify these two components

I am trying to identify these components, and I couldn't find anything with just the marking. Any help is appreciated. The first picture I thought is Passive crystal/oscillator!!! This one is marked ...
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2answers
2k views

What does this beautiful 8-winding magnetics do?

Sometimes our magnetic components turn out to be beautiful, like this one: I took this out of what looks like a projection TV, where there were three of these. Does anybody know what it does? I ...
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3answers
209 views

What is the name of this wave shaped component?

What is the name and purpose of the following component? It's a white rectangle with a S shaped thick trace on it. Is it a resistor? It came from this teardown (microphone). Unfortunately, there is ...

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