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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Successor of VTI's SCP1000 Family of Absolute Pressure Sensors

VTI's SCP1000 product family is a range of ceramic capacitive pressure sensors that have reached the end of their lifespan. It has been suggested that certain sensors designed by others (like Bosch ...
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1answer
54 views

Rectangular selection for component designator in altium

I noticed that is not possible to use rectangular selection for designator in Altium (PCB view). I have to select them by clicking on each of them. And for moving a group of them I can't use keyboard ...
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78 views

Correct procedure to identify a component and obtain the datasheet

I'm not sure what should be the correct procedure to obtain a component's datasheet starting from the component's package code. I searched in the other questions, but I found mostly people asking ...
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136 views

Looking for informations & datasheet of OSS-4ES

I have an (old) dip8 component I cannot identify properly. It is quite unusual & nice so I'm looking for its datasheet or information about it. The date(s) code(s) I found seems to be 90's for ...
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199 views

1968-ish Philips radio components question

I found a Philips radio/record player from I believe 1968 at a garage sale. I picked it up for $5. Sweet deal for me! I researched the cabinet to find it's general manufactured time frame. I've ...
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49 views

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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43 views

Name of a connector

I've been trying to find a suitable Vcc and ground connector for my DIY RF amplifier, however, after some days of searching I haven't been really able to track them down. Could anyone perhaps identify ...
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1answer
54 views

Terminology for components found in Kitchen Timer

Apologies if this is a duplicate, by definition I'm not sure what to search for. I took apart a kitchen timer and found a few things I'd like to learn about, but couldn't find the right terminology to ...
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74 views

What is this sideways capital I component with an x in the middle on a schematic for an Intel chipset?

Here is the schematic The compoent in blue -- it appears to vaguely resemble a 0 ohm resistor. Is it a TVS diode?
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61 views

Identifying a Diode

I am trying to work out what diode this is. I can tell that the red spot indicates the cathode. If I use the standard color scheme for resistors I get 0904 (or 904 if the first black band is not ...
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39 views

Cannot identify SMD component

I got this SMT component that looks like resistor or capacitor. The marking is 1407 15K I enclosed the image, the size is about 4 mm X 5 mm
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1answer
120 views

Vintage Pocket Radio Transistor Replacement is Oscillating

I have an old pocket radio which uses silicon NPN transistors for the mixer and IF stages. I replaced 2 of the IF transistors and the unit functions, but the new transistors are faster than the old ...
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183 views

What buttons are used in the Stream Deck

Can anyone help or point me in the directions of what butons are used in the Elgato Stream Deck? The buttons seem to have an intergrated LCD screen, which can be altered by the user. Searching for '...
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75 views

How to continuously vary inductance in the range \$[-A, A]\$, A>0?

I require an inductor whose inductance varies continuously as a function of some parameter \$p\$, like a bias voltage or something else that is easily user-controllable (not frequency as I require it ...
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2answers
57 views

What would constitute a good selection of medium power and gain transistors that are modern equivalents of discontinued parts?

TLDR: I need to build a collection of NPN and PNP transistors(mostly medium powered complementary audio amplifier transistors) in order to avoid constantly ordering specific parts and waiting for them ...
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2answers
52 views

Looking for a wire mounted pin header connector

There are connectors on many modern motherboards and peripherals intended to control RGB LEDs. For example, this one has a connector like this: And it is intended to be connected to the pin headers ...
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130 views

Help identifying the resistor

Can someone help me with identifying this component please? I was initially under the impression that it is a resistor but when I look at the back, it looks like a resistor with a dab of solder in ...
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180 views

RGB to YPbPr (YCbCr) conversion and bright picture issues

I'm working on a specific RGB to YPbPr (component) converter. It is supposed to connect old consoles to a modern flat 240p supportive TV. However I have an issue with luma Y output part. Here is the ...
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2answers
375 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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126 views

Soviet Russia components need identifying

I have a KO D-8e Soviet engine which was made somewhere between the 60s and the 90s is USSR. I'm trying to bring it to life and need to find what are those 2 dead components in series. They have no ...
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82 views

Piezo Transducer - Constant weight increases sensitivity, why?

I currently have a piezoelectric transducer connected up to an Arduino in the following arrangement The piezo is normally not very sensitive, unless I tap my finger directly on the sensor, or knock ...
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73 views

Can't find replacement for switch

I am trying to repair a nespresso machine(not a job, just for fun) and the PCB had the following switch: I tried to google it as "switch", "switch 4 pin", "1552", but nothing returned a switch ...
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1answer
61 views

Resistance transform

Is there a circuit either passive or not that can transform the value of a resistance with a fixed ratio ? For example if the input resistance to the circuit is 5000 ohm and the ratio is 50:1 , the ...
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409 views

What kind of glue should I use for PCB-mounted components to increase rigidity and stress relief (not vibrations)?

I have some small boards that have various connectors, JSP, female headers etc. Those connectors and headers will be used a lot with various devices plugged in and pulled out and will get a lot of ...
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320 views

F type female to SMA male adapter impedance question

I have a coaxial cable that I need to connect to a SMA female connect. The impedance of the cable is 75 ohms, and from online the SMA female connect is 50 ohms. Online there are a few places that sell ...
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69 views

Help in identifying two parts

I need to identify two parts that I need to replace, but I'm having a hard time doing it. These are the parts: Part 1: From my research I think it is a trigger switch (http://www.jiaben.com/en/pro....
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164 views

Trying to identify varistor values off an ancient power supply

Was tricky to get a photo with the markings visible, but as best I can tell the markings read... H L1 1502 ...The scoring down the middle is from where I ...
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2answers
263 views

Discerning between transistor types

How do you tell different semiconductors (mainly transistors, sometimes even voltage regulator ICs, etc.) apart? Do they all basically look the same; or are there visual clues to indicate a certain ...
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77 views

Identify Quad Flat package

I looked for days trying to find datasheet to this component. I concluded that this is a Quad Flat No-lead. But trying to search the marking code gets me nowhere. I did however find couple websites ...
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252 views

Electronics components casing or packaging style types and diferences?

Is there any good visual guide or reference that explains the different types of casing styles like these ones that I come across every time I try to buy a component on farnell website: ...
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3k views

How to produce electricity with mechanical power/spring coil

As a home project I want to make a electricity generator which uses a spring coil, which when turned/wound(just like the mechanism in wrist watches) enough times will start unwinding and generate ...
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369 views

Indentifier smd sot23-6 mark as CASW

Can somebody indentifier this part? It is mark as CASW
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182 views

What is the official name of this "shorting bar 5-position" header?

I have purchased this item locally in the past and basically its 5 wires aligned in parallel, and makes my circuitry much easier (eliminates the needs to manually connect 5 individual wires side-by-...
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484 views

an LM13700 can be configured as a "floating" voltage controlled resistor ; How resistor-like is it?

I want to use an LM13700 as a voltage controlled resistor, and I want it to act like a rheostat. When will it act non-linearly? The description of this circuit is on page 15 of the datasheet, and ...
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341 views

Extract firmware of an old electronic toy

I'd like to extract the firmware of an old electronic toy. Is has two electronic components, made by Texas Instruments: a PC35303NL - QB 8649, which is the main controller I guess TMP50C40AN2L - ...
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116 views

Meaning of + and - in an electronic component's part number

I have search in the internet and I could not really get an answer for this question. "What does \$\mathbf{+}\$ and \$\mathbf{-}\$ mean in an electronic component's part number?"
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117 views

Eagle: IC package variant, different pins bonded out

I'm trying to create an Eagle component for the Altera EP4CE22, which comes in BGA and SMD packages, where different pins are actually available on the outside of the package. Is it possible to reuse ...
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533 views

What is this component on my dog's door opening collar?

I am having some frustration with my dog's pet door opener. This is an off-the-shelf system from a company called HighTechPet, and the collar unit uses a coin-cell battery with a special carrier glued ...
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69 views

What does PN mean on this capacitor?

What does PN mean on this capacitor?
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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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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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48 views

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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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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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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25 views

High current, low activation voltage relay or analog switch IC

I am working on a gauss rifle, which will be controlled by a computer system running at 1 amp / 5 volts. This computer system will need to interface with the magnetic coils of the rifle in order to ...
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53 views

Help Identifying Component On Arcade PCB

looking for help identifying a component that I think is damaged on this old PCB. It looks like a ceramic capacitor to me but I've been having trouble finding a matching one online. Could anyone help ...
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38 views

What do you call an electronic switch that maps from some configurable subset of inputs to one output?

Analog multiplexers are N x 1; they select one input from a set of inputs and route it to one output. Analog crosspoint switches are N x M; they select various subsets of inputs and route them to one ...
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41 views

Label information of SRAM chips

I have purchased an SRAM chip for my project (part-number: IDT71V416L15PH) and found a code string on the chip label (see the attached image). Now, I am a little curious about this code. Does this ...
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64 views

How to switch SMD part for through-hole part in EasyEDA?

I'm using EasyEDA for the first time. I have about zero experience with CAD. I drew this schematic And generated this PCB layout But I really wanted to use a through-hole DIP package for the ...
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47 views

Do connectors with mounting tabs like this need to be grounded?

The connector I have attached has these solder tabs on the side (red arrow). I think it's fairly common. The question is, when creating components for something like this, should I add two additional ...