Linked Questions

-1
votes
1answer
755 views

SMD diode part number from marking code [duplicate]

I can't find SMD diode part no from Marking code,pls suggest if possible.
11
votes
3answers
3k views

A 1USD 11W led bulb circuit and parts analysis

I know this is not a huge deal, but still I want to do it because for Three reasons: 1, it only costs 1 usd. Yep, this is a very cheap led bulb, and I need to take it apart to see if it's trust worthy....
4
votes
1answer
836 views

Identify manufacturer and chip

I'm trying to identify the manufacturer and component from a Belkin tunecast (Lightning) to FM transmitter device. I've searched through a couple of logo sites and Google and was not successful. The ...
0
votes
4answers
4k views

Identifying an unmarked SMD capacitor and chip

So I'm setting myself into SMD components, as I want to create my own compact 5v step down converter, based on this component. I've read that these small brown ceramic capacitors are most likely ...
1
vote
1answer
364 views

What function does this PCB circuitry serve?

Backside is metal disc with thermal paste between it and the metal mount to which it is screwed. Input is 6.75V 200mA. What function does the PCB circuitry serve? Is it stepping down the voltage or ...
0
votes
1answer
2k views

SMD transistor marking

I have a SOT-23 SMD transistor marked "2.X L" as shown in the image. I managed to find out that "2X" stands for 2N4401 and the dot seems to mean "lead free". But I couldn't find the meaning of the ...
-2
votes
1answer
347 views

What IC is this?

This IC must be a timer which is found in a flowmeter. Can anyone help me identify it. Things written on it are 397C1 3310D ...
0
votes
2answers
425 views

how to identify transistor/IC by its model/product number? [closed]

How to identify(biasing/company/working sections) transistor / IC by its model/product number? or details ?Example: 2sc2078, 2n2219 etc. Please help, i need to understand... Thanks
0
votes
0answers
1k views

6 pin SMD IC marking code ADS

Please help me to identify 6 pin SMD IC with top marking ADS
2
votes
2answers
190 views

What is this component? Marked R5

Edited: Added more pictures. I'm reverse engineering a PCB but I'm stuck at one component. I can't find out what it is. I thought it is a diode because of the marking on top of it but when I test it ...
6
votes
1answer
171 views

Identifying component from i2c trace & obscure SMD marking

I wanted to poke around one of those sub-10$ smart bands, so I got a couple of them. I opened it and I was able to identify some major components from the SMD markings, including a Dialog DA14580 MCU, ...
0
votes
1answer
131 views

How do I know which component this is?

It says 100J and is much bigger than the other components. It has a resistance of 2ohm when the circuit is without power, and 15 ohm when I attach power to the circuit. It has a 1nf capacitance. So ...
0
votes
1answer
433 views

KV7RF SMD Datasheet

Can someone identify a 5-Pin IC SMD with the marking code KV7RF? Searching in Google I didn't find anything. Any help on this?
3
votes
1answer
162 views

SMD identification

Tried all over internet...but not found what it is. Any help appreciated.
0
votes
1answer
125 views

Can you determine needed input voltage from just looking at this circuitboard?

Question poster's level of knowledge: BEGINNER/NOVICE/MENTALLY CHALLENGED Device: A stage lighting pan/tilt motor, for one axis. Used in sets of two to provide remotely controlled X and Y movement ...
-4
votes
2answers
194 views

What ohms reading will be 10U 25V Capacitor [closed]

I am noobi in soldering and don't have much knowledge to identify components, i have a lot of Capacitors and resisters, now i want to know if i need 10U 25V Capacitor from what i have stock than how i ...
2
votes
1answer
242 views

Matching LCD controllers to LCD compatible panels

Over the years, I've accumulated numerous LCD panels and controller boards salvaged from TVs, Monitors, Cell Phones, digital picture frames, GPS devices and tablets. I would like to reuse the panels ...
0
votes
1answer
80 views

Query regarding unknown component

Hi guys I'm very new to this field and I'm having a problem with my sound devices 664 recorder. There's a faulty component and it needs to be replaced. I couldn't find the component here in the local ...
-4
votes
2answers
124 views

All electronic components have numeric values while resistors have colors: why is that? [closed]

I'm not an expert in this matter, so AFAIK the most part of electronic components have numeric values while resistors and few other components have colors: why is that? Why there is not a standard for ...
0
votes
2answers
158 views

Identifying components

I have a DC-DC converter that I want to repair. Unfortunately I cannot identify 2 SMD components from the drive circuitry. I am hoping some of you can help me identify what they are so I can have the ...
-3
votes
1answer
70 views

What is this IC “MC1MX31LDVMN5D”?

Would you please help me to know this IC.
0
votes
1answer
70 views

ADC IC identification

I'm struggling to identify the origin of the IC in the attached image. I believe it is a rebadged HP/Agilent part:1826-1488, ADC CMOS 12-BIT 20-PIN. can you tell from the logo who makes it then I can ...
0
votes
1answer
69 views

What kind of capacitor might this be? Value?

I am trying to duplicate a simple 556 circuit, this capacitor works, but when I try to substitute another cap, it doesn't work. I need to order a couple dozen of these but want to order the right ...
1
vote
0answers
133 views

What are those components?

I am doing a reverse engineer project but I can't find what these components are. Can someone help me? The components have the folowing text on it: IC #1 = 7HUH 7HUH IC #2 = AAPQ AAPQ Here you ...
0
votes
1answer
80 views

Identifying damaged, burnt out, or missing components [closed]

Is it possible to deduce the identity of damaged, burnt out, or otherwise missing components (or suitable substitutes)? For example, below is the PCB of a 2 speed electric razor I've disassembled. ...
2
votes
0answers
131 views

I'm trying to identify this SMD

I'm trying to repair Black and Decker Thermal Leak Detector. I was testing the 9v input from the battery when I notices the chip was cracked. I'm thinking it is a transistor, but I haven't been able ...
0
votes
1answer
79 views

Transistor identification

I have had a battery power bank from anker (powercore 20100mah) for some time now and it stopped working. Upon opening the case i saw a blown up transistor and i am having trouble identifying it. It ...
2
votes
0answers
122 views

Help to identify 10-pin IC in a GPS unit

I am trying to repair a GPS unit. There was a zener diode (to56 PolyZen protection diode) which had blown off and I had replaced. This is part of the battery charging circuit I believe, as once I ...
1
vote
0answers
101 views

Mystery component

I have this SMD component that popped. I cant seem to identify it properly. Could you please help? I tried to look it up, but had no luck. It is a led driver board.
2
votes
1answer
46 views

How to read markings on EMI/RFI filter

I am looking at a 3-pad SMD EMI filter chip (see photo) which is marked on the top with "222J". I am familiar with reading the markings on top of resistors and capacitors, but am not sure how to ...

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