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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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Does anyone know what the symbol or footprint is supposed to look like for this toggle switch?

I'm trying to make a circuit diagram on Eagle and I can't find the symbol or footprint for this particular toggle switch called 5646MAB (first pic). I would custom make it myself on Eagle but I have ...
alxzhu's user avatar
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-5 votes
0 answers
52 views

Draw the following circuit [closed]

Draw the following circuit according to the condition below : switch one 1must switch lamp 1only and switch 2should only switch Lamp 2,,,,, when either switch or lamp is on , the other switch or ...
Kache Gobelo's user avatar
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2 answers
85 views

What is the best solution to keeping heavier components on a double-sided PCB while going through second pass reflow?

I am trying to do some research as I have many customers who face this issue with their parts falling off the board during the second pass. What has worked for you? Many applications are different ...
RMT's user avatar
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2 votes
1 answer
122 views

Unknown SMD component - PCB Designation question

I have a board we are trying to repair. We are unable to get any technical documents from the manufacturer, no schematic or BOM for the board. This has multiple switches, think metal dome you press ...
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0 votes
1 answer
89 views

Tinkercad multimeter doesn't work [closed]

Measuring voltage and current in Tinkercad, tell me why the voltage does not change when connected in series and the current in the circuit does not change when connected in parallel.
Foma Loktionov's user avatar
3 votes
1 answer
1k views

What is this component - 8 legged inductor?

I am having trouble identifying this component. Pretty sure it must be an inductor of some sorts but I have never seen an inductor before with 9 legs (8 of which are used). The 8 used legs have ...
wgthompson's user avatar
1 vote
1 answer
72 views

What is this component? (datasheet)

I can't find the datasheet online. The component is mounted in the circuit of a Bluetooth speaker
KaleM's user avatar
  • 473
2 votes
2 answers
230 views

Need help implementing a 16x13bit ROM

I'm trying to build a tiny "hex font ROM" analogous to the ones embedded in for example the HP TIL311 and am pretty much unable to find useful parts. Since it's for hexadecimal, I'd need 16 &...
nonchip's user avatar
  • 207
0 votes
1 answer
36 views

Altium annotation - no changes were made

Although I have made changes in the schematic file in Altium, it tells me that there is no change in the annotation process, but there is. What is this caused by, and how to solve it?
ertugruldugencioglu's user avatar
11 votes
3 answers
2k views

Trying to determine what this small glass-enclosed item is

I need help identifying the small, glass-enclosed device shown below. Printed circuit board has DSA1 printed near it. A wider view of the PCB is also attached. The item I am asking about is in the ...
2002sheds's user avatar
  • 127
3 votes
1 answer
402 views

Identify an IC labeled LB21

What is this IC? Trying to find a datasheet for it. Best I can make out from markings is: LB 21 Package: SOT-89-3
Monesh Rathod's user avatar
2 votes
1 answer
96 views

What are the purpose of these components on my car ECU?

What are these metal "cages" around the capacitors as seen in the circuit below (2x).
wgthompson's user avatar
3 votes
2 answers
156 views

Help me identify an unknown 8 pin SMD component

I have this 8-pin component on a battery management board. I suspect it is a two-channel MOSFET. The battery charger input is spread over three pins on one side. The remaining pin on that side is ...
moshejay's user avatar
  • 145
0 votes
2 answers
53 views

What are these jumper components? Control Board from a Home Depot Minisplit

Not sure if these are some type of ferrite or something else but would like to know what they are (J8, J9). They are not labeled and are used in another place on the pcb as well. The board was shorted ...
RichL's user avatar
  • 41
1 vote
4 answers
130 views

Help me understand these four components in a PCB (I'm a novice)

I removed my A/C split 9000 but pcb (indoor unit). There are some components I cannot identify or fully recognize at all. The blue box with a little plastic bag. What's that? and what's for the bag? (...
Panamanian's user avatar
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0 answers
65 views

Help Identify Component(s)

I'm trying to recreate this circuit. It is a device that plugs into another device that sends a servo a quarter turn in one direction or the other with a single push of this button. I'm assuming the ...
jasonwnc's user avatar
0 votes
2 answers
80 views

Identify IC marked AC1819E8L6259A0 or the purpose of the whole board [closed]

What is this part used for? How do I identify it? The marking text reads "AC1819E8L6259A0." I would like to figure out this tiny board's purpose. I found it blinking in my car outside of its ...
Lacy Beck's user avatar
0 votes
0 answers
43 views

nand2tetris ALU Question

So im working on the ALU for the nand2tetris course online (for fun) and it's "design" is supposed to be as such: ...
msmith1114's user avatar
0 votes
0 answers
68 views

Help finding this car keyless fob component

It is likely fairly obvious to some, but I cannot seem to find any information regarding the part in the picture, what does it do? And how does it work? Some keyless fob have it in conjunction with an ...
Ivan Beck's user avatar
2 votes
2 answers
931 views

Yellow components on light intensity module PCB

Can anyone tell me what the yellow components on this PCB are please? At first I thought diode - they measure 0.7 V but then 1.7V when measuring reverse-bias. Then I thought capacitor - but the both ...
dntknwnthng's user avatar
1 vote
1 answer
61 views

ID & Possible Substitutions for Blown Old Vishay SMD Component

can anyone please identify the component "VD20" (Marked SJ 47A with Vishay logo) pictured in the attached images. There are 8 of these similarly marked components still intact on the board. ...
YoungDiode's user avatar
1 vote
2 answers
111 views

Choosing crystal (oscillator) for STM32 project with 100BASE-T Ethernet?

I've googled around and also found ST's AN2867 on oscillator design, but I don't find one key info: How high are the clock precision requirements for an STM32, driving a 100BASE-T ethernet PHY over ...
adrifromhh's user avatar
5 votes
1 answer
278 views

Can anyone identify this 6-pin SMD integrated circuit? (multi-charger)

This is a part of the ISDT N16 multi-charger. The part labeled BF seems to be broken. I think it's SOT-23-6, but I'm not sure. It is connected in parallel with a gate of 8 FETs and is presumably a ...
festool's user avatar
  • 51
1 vote
1 answer
66 views

Please help identify this component 1.6 x 2.9 mm 6 pin SMD, SOT26 package

I am having no luck identifying this SMD. I tried all my usual reference tricks but still no success. This is the whole board. The red arrow bottom center points to the component in question. I am ...
De P's user avatar
  • 11
0 votes
1 answer
56 views

Identify a component labeled "RU" inside a Canon Vixia HG20 LCD display

I found this component inside a Canon Vixia HG20 LCD PCB: This seems to be an opaque lens of some kind, so my first thought is that this could be an IR sender/receiver. Since there are 4 terminals, ...
tfm's user avatar
  • 439
1 vote
1 answer
84 views

I need to identify this component - flat, grey, 4 terminals, 8.9 x 5.6 x 2.5mm

I need to identify the component in the picture. In the circuit it is between the GND that arrives at the PCB and the GND that goes to the components, while the other side is between the VCC that ...
GustavoSBelote's user avatar
1 vote
1 answer
97 views

Identifying the electrical components in an LC resonant inductive coupling circuit [closed]

I am trying to identify the electronic components of this circuit. I am very new to this, obviously.
cdnb1's user avatar
  • 11
0 votes
1 answer
100 views

Component identification - what are these two blue blobs

What are these two handsome brothers? In case you can't see them properly, they are polar components, both marked with "+2,2" and "+25V" tags.
DrD's user avatar
  • 199
0 votes
1 answer
42 views

How to center two pads in Altium?

How to center two pads in Altium? I usually drag the component pads to perfectly center it but is there any better way to do this; any shortcut?
Monesh Rathod's user avatar
1 vote
1 answer
53 views

I need to identify a component package and, if possible, the component

I need to know haw the package and/or the component of the picture. It is between the VCC supply voltage and the voltage that goes to the rest of the circuit. Apparently it does not behave like a ...
GustavoSBelote's user avatar
1 vote
1 answer
62 views

Identify IC with marking '119 16wwUJG'

I have an HUB 3.0 PCB from a Monitor. The Monitor is OK, but the HUB 3.0 PCB doesn´t work. Could you help me identify the two ICs U23 and U25?
Chipyto's user avatar
  • 21
2 votes
1 answer
431 views

What is this part marked WH5 33?

What is this part and what is its part number? I can't find a part with the code WH5 33.
Ahmad Abd El Maksoud's user avatar
0 votes
1 answer
91 views

LCD PCB component identification, SOT-23-5, "DK-NON"

I have a question about an SMD component that blew up on my microscope's LCD PCB. It has 5 pins (2 on one side and 3 on the other), the lettering on the back says DK-NON. enter image description here ...
Warlock1663's user avatar
0 votes
0 answers
51 views

Replacing MAX485ESA IC into a RS485 module but not working

I have been struggling a lot with a MAX485ESA IC I bought from aliexpress. What I want to do is replace the component from a rs485 module. For some reason they don´t work and I was wondering if anyone ...
user2808169's user avatar
5 votes
2 answers
154 views

Is Vgs a concern when using a high-side FET driver?

I would like to use the MIC5014 to drive an N-channel MOSFET as a high-side switch. My supply voltage in this system is 24 V. I understand that the MIC5014/MIC5015 uses an internal charge-pump to ...
BonsaiOak's user avatar
  • 173
-2 votes
2 answers
106 views

What is this component that looks like a resistor? [closed]

I'm attempting to repair the power amplifier PCB for a Laney Session 40 Reverb guitar amplifier. I think this component is a resistor, but I have never seen one like this before.
A. Davidson's user avatar
0 votes
2 answers
111 views

What part of a TV is on during standby mode that makes the small noise inside the box?

I'm intrigued by the old debate about stand by mode vs switching off for longevity. It would appear that stand by mode wins out, but there is still electricity generated consumed so something must be ...
Ryo's user avatar
  • 1
0 votes
1 answer
84 views

What kind of switch is this surface mount component with no actuator?

One way I am learning about electronics is to try to analyze the function of random small circuit boards that I come across. I found a device with a component labeled SW2, so likely it’s a switch. ...
Travelling Man's user avatar
0 votes
1 answer
76 views

Bipolar Junction Transistor operating modes

If I use a BJT transistor as a switch, the transistor operates in the saturation or cut-off region, not in the active region. However, some sources use the formula IC = β·IB. However, this formula is ...
Serkan Kaya's user avatar
1 vote
1 answer
58 views

6-pin SMD identification on BMS smart controller

Can anyone help me identify the component in the attached picture? I've never seen a similar package.
salvatore cirasa's user avatar
0 votes
1 answer
84 views

What's this electrical component symbol on a motor control circuit?

learning schematics (europe) what is this component called, why is it there and why is it connected to U? Motor can go reverse as well if that's relevant.
llVIU's user avatar
  • 11
-1 votes
3 answers
153 views

What is this device RV1 that looks like antiparallel diodes across the input of a bridge rectifier?

This is the initial part part of a 10 V power supply circuit from a 1970s (or perhaps early 1980s) chain printer. What is RV1 and what does it do?
cjs's user avatar
  • 990
1 vote
2 answers
81 views

help to identify the component

I don't understand what component it is (0k=g9w), and it needs to be replaced. I've done various searches, but I can't figure it out. This is a motherboard from an Asus computer.
Jhon M.'s user avatar
  • 11
0 votes
3 answers
97 views

Puzzling 'conductor' in a bathroom scale [duplicate]

Hoping to scavenge the LCD from an old bathroom scale for another project, I took it apart. There were four sensors -- one in each 'foot' of the scale -- all wired to a small circuit board whose back ...
John's user avatar
  • 259
3 votes
5 answers
700 views

What does (DW) mean in the TI equivalent of SOIC (16) package?

TI datasheet says: SOIC-16 Wide Body (DW) and Extra-Wide Body (DWW) Package Options It doesn't mention what DW stands for. I am annoyed when manufacturers come up with their own naming conventions ...
Dynamic_equilibrium's user avatar
9 votes
4 answers
3k views

Why do manufacturers label differently seemingly identical components?

I am not sure if this is the relevant place to ask this (I think it is.) I am still relatively new to the electronic design world, but I notice that a series of parts (example - Torex XCLxxx) can ...
Yordan Aleksandrov's user avatar
0 votes
1 answer
101 views

Small Speaker with High dB. Loud enough?

I need a compact speaker suitable for a 16mm diameter tubular enclosure. The speaker must be capable of playing voice audio clips with sufficient clarity and volume to be easily hearable and ...
exile97's user avatar
  • 299
0 votes
0 answers
34 views

Altium 22 or above - copying part parameters from supplier information into part for easier part creation

I have some parts that show up in altium 22 or above (using 24), but if the footprint and other information isn't there, it needs to be created. (NOTE: if you right click on the supplier there is no ...
Voltage Spike's user avatar
  • 84.8k
4 votes
4 answers
1k views

I2C to 100+ PWM

I'm currently looking for some sort of interface which can generate many (up to 100 potentially) individual PWM outputs. I figure I2C is the best way to go about this, but I'm open to other ...
Davis Last's user avatar
0 votes
1 answer
138 views

Identify SOT-23-5 component marked 8311 J1A9

I'm working on a circuit, and I can't find information on the component shown in the picture: Close-up Surrounding circuit The component package is an SOT-23-5. It is marked "8311 J1A9." ...
Nikhil Mp's user avatar

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