hybridfree/eevblog-posts huggingface dataset:
Need help identify the component on this PCB. - Page 1
Forum section: electronics / beginners

author: BeBuLamar
author_rank: Super Contributor
timestamp: February 02, 2024, 11:07:00 am
content: I get this PCB to make use of the Avago APDS-9007 as I can't attach wires o the sensor without a PCB. The PCB convert the current output to volltage which is OK but would like to identfy the components on the PCB.

author: jwet
author_rank: Frequent Contributor
timestamp: February 02, 2024, 04:56:21 pm
content: That is the ADPS-9007 light sensor if I'm seeing things correctly. It puts out current and the PCB converts to volts like you thought. Transimpedance amp.Am I missing something- are you pointing at something else? (Also, Broadcom bought this product line and most others from Avago- formerly HP )

author: BeBuLamar
author_rank: Super Contributor
timestamp: February 02, 2024, 10:17:58 pm
content: I know the Avago sensor but what are the other compoents. I try to find out the output impedance of the circuit.

author: jwet
author_rank: Frequent Contributor
timestamp: February 03, 2024, 12:48:03 am
content: Your red circle threw me off. Your picture doesn't have enough resolution to read the back marks or part nos. on the IC's. Ring it out a bit and maybe draw at least a partial schematic- it will start to make sense. Its most likely a linear regulator IC and an OP_AMP. if you can zoom in a bit and get some connectivity/netlist and backmarks, it would help a lot. That sensor makes a current, you feed its output to a resistor to convert to volts but better a low voltage referenced transimpedance amp. The output impedance will be quite low- <500 ohm depending on whether they put a resistor in series to make it more rugged for hobbyists. Ring it out.

author: BeBuLamar
author_rank: Super Contributor
timestamp: February 03, 2024, 10:31:10 pm
content: Perhaps this is a little bit better

author: Jwillis
author_rank: Super Contributor
timestamp: February 03, 2024, 11:18:49 pm
content: jwet is correct. It's aBROADCOM APDS-9007-020

author: BeBuLamar
author_rank: Super Contributor
timestamp: February 03, 2024, 11:55:19 pm
content: I need to identify the other components not the light sensor.

author: ArdWar
author_rank: Frequent Contributor
timestamp: February 04, 2024, 02:54:32 am
content: What do you even need to identify here? The one with 33 marking is obviously a 3v3 regulator, and one with OA marking is an opamp. Both use common standard pinout and I don't think the exact part number matter that much here (within reason). The only thing remotely critical here is the 51k current shunt.
Need help identifying 2 SMD 3-pin components - Page 1
Forum section: electronics / beginners

author: brainwash
author_rank: Frequent Contributor
timestamp: December 07, 2020, 06:26:24 pm
content: https://imgur.com/a/ohckImcI have to SOT-23 parts (or SOT-323?) which I assume are transistors.Since this is a tablet which works with 4.2V and 5V, I assume they would have a maximum voltage of no more than 50V.They are rather small so they cannot dissipate much current. They are unlikely to be used in their linear region. One of them is markedKFD 630and one of themKFD 631. So it could be that they are complementary parts or just different manufacturing dates.How does one identify exactly which components those are? I'm sure I canfigureout a similar replacement, at least in this case, but is it possible to determine the a more exact match?

author: amyk
author_rank: Super Contributor
timestamp: December 08, 2020, 01:12:56 am
content: KFD is SSM3K324R. Seller image for verification:https://lcsc.com/product-detail/New-Arrivals_TOSHIBA-SSM3K324R-LF_C395455.htmlThe cratered one says KFOand is SSM3J331R. Seller image for verification:https://www.aliexpress.com/item/32760450670.html

author: brainwash
author_rank: Frequent Contributor
timestamp: December 08, 2020, 08:30:27 am
content: Thank you, how were you able to search for them?

author: amyk
author_rank: Super Contributor
timestamp: December 08, 2020, 02:28:21 pm
content: The famous Russian site.
Need Help Identifying '45A 9081' Marked TSSOP EEPROM - Page 1
Forum section: electronics / beginners

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 17, 2013, 01:56:15 pm
content: probably TSSOP, cant measure too small and congested. its serial EEPROM thats affirmative from the service manual (named only as IC7) google returns unexpected results.btw: its my canon flash 550EX unit thats giving faulty flash power output (full discharge at minimum 1/128 power setting). there are many areas to suspect, one of it is, faulty or erased EEPROM content, is it possible after about 5 years of service? thanks.

author: amyk
author_rank: Super Contributor
timestamp: October 18, 2013, 11:59:03 am
content: I've seen this part number (9081) before somewhere... although I can't remember exactly wherePart number suggests Rohm (they have a BR9080but it's a different interface) - theAK6440BHand the like have the same "SCI bus" interface (something like SPI but a Japanese variant) so maybe you could figure out the rest from there. Put a logic analyser on the signals and see what you get.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 18, 2013, 12:27:34 pm
content: Pinout looks like fairly standard 93xx SPI style - probably worth trying to read as one of those.

author: fluxcapacitor
author_rank: Frequent Contributor
timestamp: October 18, 2013, 05:03:33 pm
content: My guess its a ASAHI KASEI AK93C45A

author: amyk
author_rank: Super Contributor
timestamp: October 19, 2013, 08:30:10 am
content: Quote from: fluxcapacitor on October 18, 2013, 05:03:33 pmDoesn't have a RESET pin.If the OP is looking at the same schematic as I am, this particular EEPROM has a pinout like this:Code:*---------+1|/CS VCC|82|/SK NC|73|DI RESET|64|DO GND|5+---------+

author: fluxcapacitor
author_rank: Frequent Contributor
timestamp: October 19, 2013, 12:41:03 pm
content: Quote from: amyk on October 19, 2013, 08:30:10 amBut pin 6 and 7 aren`t connected ? I couldn`t find the schematic ,the only one i could find was for the 580EX ,i assumed wrongly that it would have a similar layout and eprom .I did look at the pinouts on plenty of datasheets but on all of them pins 5-8 were different. Any chance you can upload your schematic .My mistake amyk ,i didnt read your answer correctly .I found the 550EX schematic though.

author: amyk
author_rank: Super Contributor
timestamp: October 20, 2013, 05:50:26 am
content: Oops... looks like we both made the same mistake - I assumed the 580EX would have the same EEPROM. But RESET pin is tied to ground so not used anyway.In that case, I'd agree with 93Cxx.
Need help identifying a 4-pin connector, pitch < 2.5 mm, used in Changan car - Page 1
Forum section: electronics / beginners

author: Jaxaay
author_rank: Newbie
timestamp: February 23, 2025, 01:45:47 pm
content: Hi everyone,I need help identifying a 4-pin connector with the following characteristics:- Pitch: Approximately 2 mm.- Simple locking clip.- Used in a Changan car.- Pins are solderable to a PCB.I have already checked severel JST, Molex, and TE Connectivity without success. Here are some photos of the connector:Thank you in advance for your help!

author: LinuxHata
author_rank: Frequent Contributor
timestamp: February 23, 2025, 02:46:59 pm
content: It is called JST PA 2.0https://image.made-in-china.com/2f0j00gnFoKLdZNBqN/Jst-PA-2-0mm-Pitch-S14b-Pask-2-S15b-Pask-2-S16b-Pask-2-Connector-with-Plug.webp

author: Jaxaay
author_rank: Newbie
timestamp: February 23, 2025, 07:02:57 pm
content: Thank you very much
Need help identifying a capacitor - Page 1
Forum section: electronics / beginners

author: manosk
author_rank: Newbie
timestamp: November 04, 2019, 12:28:26 pm
content: Hello. I found a broken capacitor in the motherboard of my laptop and i want to see if thats the problem that my battery won't charge. I didnt find anything with the values on top. Any help is appreciated

author: pant3k
author_rank: Newbie
timestamp: November 04, 2019, 12:41:35 pm
content: 25V 100uF

author: manosk
author_rank: Newbie
timestamp: November 04, 2019, 12:57:53 pm
content: Thanks alot

author: mariush
author_rank: Super Contributor
timestamp: November 04, 2019, 01:36:17 pm
content: Not sure who makes it, could be Panasonic ZA series.But it doesn't matter, it's a 100 uF 25v capacitor, polymer. (E says it's 25v)You can probably use anything between 82uF and 150uF, the exact capacitance is probably not that important.The voltage rating is important, should be 25v or higher because you probably charge with 18v..20v adapter, so voltage must be above that.
Need help identifying a case code part:   BYO 531 6V - Page 1
Forum section: electronics / beginners

author: smoothVTer
author_rank: Regular Contributor
timestamp: August 14, 2017, 08:06:02 pm
content: Greetings all chip sleuths!I have exhausted my google-fu and every SMD code book I could find online with no luck. I'm having a lot of trouble finding what part number I am dealing with here:Appears to be a 2mm x 3mm DFN-8 package.Case marking code isBY0 531 6V( can't tell if the "0" in BY0 is a zero or a capital "O" character )Pin 1 = +5.0VPin 8 = GNDPin 7 --> Pushbutton switchAny hints/advice? Anybody recognize the "BYO" portion of this case code?

author: amyk
author_rank: Super Contributor
timestamp: August 15, 2017, 12:40:00 am
content: PIC12F519. First Google result for 'package marking "BY0"'.Someone selling them on Taobaoagrees. (Picture attached for future reference.)
Need help identifying a component used in Changan car - Page 1
Forum section: electronics / beginners

author: Jaxaay
author_rank: Newbie
timestamp: February 23, 2025, 10:55:54 pm
content: Hello overyone,I need help identifying a characteristics:- it's in a plastic box.- dimensions : approximately 12mm long, 12mm width, 3mm hight.- inside, there is a metal discHere are some photos of the component before and after opening the boxDimensions: approximately 12 mm length, 12 mm width, and 3 mm height.Thank you in advance for your help!

author: Brumby
author_rank: Unknown
timestamp: February 24, 2025, 01:17:45 am
content: That would be a piezoelectric transducer. Most commonly used to make beep sounds.They are a very basic device which bends when a voltage is placed across them. Make this voltage alternate and the bending alternates, creating sound.This one is packaged to protect it from environmental factors. Cars are known for being challenging environments ... in more ways than one.

author: Jaxaay
author_rank: Newbie
timestamp: February 24, 2025, 09:47:35 pm
content: You are right, I just made it ring. Thank you very much for your help.
Need help identifying a glass diode (hi-res picture, part from circa 1987) - Page 1
Forum section: electronics / beginners

author: lkundrak
author_rank: Newbie
timestamp: June 13, 2021, 07:27:46 pm
content: Hi,I've got no luck finding out how to read markings on pictured part & what would be a replacement part I could buy today.I'm sure someone with more experience can help?Thank you!Lubo

author: bob91343
author_rank: Super Contributor
timestamp: June 13, 2021, 07:46:39 pm
content: Where is this diode? If this is a repair job, how do you know it's defective?

author: lkundrak
author_rank: Newbie
timestamp: June 13, 2021, 08:20:27 pm
content: This is almost certainly not a defective diode.The shot was taken from a part (a vintage logic analyzer probe) that's supposedly working.

author: bob91343
author_rank: Super Contributor
timestamp: June 13, 2021, 08:32:19 pm
content: What probe/analyzer?

author: Andreas
author_rank: Super Contributor
timestamp: June 13, 2021, 08:38:48 pm
content: Hello,the logo seems to be from Unitrode (never knew that they manufactured diodes)but obviously they sold the diode part to "MicroSemi"http://www.aufzu.de/semi/unitrode.htmlWith best regardsAndreas

author: lkundrak
author_rank: Newbie
timestamp: June 13, 2021, 08:53:00 pm
content: > What probe/analyzer?A Tektronix P6442 probe for 1230 analyzer.Sorry for not having been specific enough.

author: cortex_m0
author_rank: Regular Contributor
timestamp: June 13, 2021, 11:15:24 pm
content: I found a photograph of the PCB from that probe:https://w140.com/tekwiki/wiki/P6442I might guess it is a low-voltage zener, being used there to protect the inputs on the MC74HC04 inverter and the MC74HC240 buffer. But without being able to clearly see the tracks, that's a very rough guess.However, I see what I think are 10 glass diodes on that board, and if they were protection I might expect 16 (one per bit on the logic analyzer).

author: Andreas
author_rank: Super Contributor
timestamp: June 14, 2021, 06:42:10 am
content: Quote from: lkundrak on June 13, 2021, 08:53:00 pmMaybe Tektronix (like many test equipment manufacturers) has its own part numbering scheme.So without a "repair/maintenance Handbook" identification may be difficult.with best regardsAndreas

author: Terry Bites
author_rank: Super Contributor
timestamp: June 14, 2021, 05:00:37 pm
content: Given the vintage and the 74HC and 74AC logic, I doubt they are anything special. Probably a switching diode like a IN4148. Trace out the circuit. Is it a bit of M2L?

author: edavid
author_rank: Super Contributor
timestamp: June 14, 2021, 11:56:43 pm
content: Tektronix would order parts marked with their own part numbers.Tektronix diode part numbers are 152-nnnn-rr where the rr is a revision number.When the whole thing wouldn't fit, they only printed the important part, the middle 4 digits.So, the complete part number is 152-0574-00.Now you can go to TekWiki and look in the transistor and diode catalog:https://w140.com/tekwiki/wiki/Common_Design_Parts_CatalogsOn page 8-7, the spec is given as 120V, 150mA.One possible replacement would be 1N458A.
Need help identifying a part - Page 1
Forum section: electronics / beginners

author: xvalentinex
author_rank: Newbie
timestamp: April 16, 2025, 10:12:32 pm
content: I purchased an older Subaru diagnostic tool (SSM2) from eBay. It turns on, but the LCD doesn't display anything. I took it apart, and this component is the first, and so far only, thing that is jumping out at me. It's in the main power traces. I've tried searching for a datasheet, but can't find anything. Does anyone know what this part might be?

author: amyk
author_rank: Super Contributor
timestamp: April 16, 2025, 10:31:10 pm
content: I see several parts in your picture. Which one?

author: xvalentinex
author_rank: Newbie
timestamp: April 16, 2025, 10:35:27 pm
content: It has all the blue corrosion on it. I tried cleaning it a bit and taking a side picture (attached).

author: amyk
author_rank: Super Contributor
timestamp: April 17, 2025, 06:52:25 am
content: Diode, designator Z1 suggests zener.
need help identifying a transistor - Page 1
Forum section: electronics / beginners

author: keanureeves99
author_rank: Newbie
timestamp: June 23, 2023, 09:32:04 pm
content: Sorry if this is really obvious, but try as I might, I could not identify this transistor. It's on a motor control board for a Sanyo TP B2 turntable, probably from the late 70s or 80s. Any ideas? (sorry about the blurry photo.)

author: mariush
author_rank: Super Contributor
timestamp: June 23, 2023, 09:48:06 pm
content: In the future, try adding 2SC or 2SD in front of numbers, in the case of transistors2SA (PNP)/2SC (NPN) designation is a high frequency transistor, and that a 2SB (PNP)/2SD (NPN) designation is a low frequency transistor.So in this case, it's most likely 2SD603Can't easily find datasheet for it, there's datasheets for 602 and 601but alltransistors says :https://alltransistors.com/transistor.php?transistor=19787Code:Type Designator: 2SD603Material of Transistor: SiPolarity: NPNMaximum Collector Power Dissipation (Pc): 0.25 WMaximum Collector-Base Voltage |Vcb|: 30 VMaximum Collector-Emitter Voltage |Vce|: 30 VMaximum Emitter-Base Voltage |Veb|: 5 VMaximum Collector Current |Ic max|: 0.1 AMax. Operating Junction Temperature (Tj): 125 °CTransition Frequency (ft): 75 MHzCollector Capacitance (Cc): 7 pFForward Current Transfer Ratio (hFE), MIN: 90Noise Figure, dB: -2N3904 would seem to be an acceptable replacement, it's just better, with higher bandwidth and higher voltage ratings:https://www.digikey.com/short/m04mt5z7

author: Jeff eelcr
author_rank: Frequent Contributor
timestamp: June 23, 2023, 10:19:24 pm
content: Time to learn about digital transistors, they also do not place a prefix on the number on the transistor.They have internal resistors, the case style might give some away but not always.Look at DTA,DTB,DTC,DTD and several other prefixes.I have three different 603's in that case style or as close as I can tell from that picture.Jeff
Need Help Identifying an Inductor.... - Page 1
Forum section: electronics / beginners

author: Domokelly
author_rank: Contributor
timestamp: May 18, 2020, 05:15:44 pm
content: Hi EEV Blog brains-trust!I’m hoping someone might be able to help me identify an SMD inductor from a PCB in the attached photo. It seems to have blown out the sealant on the exterior edges so I’m guessing it’s cooked- it’s the only component on the PCB in question with any visible damage so I figure it’s a good place to start.I looked around the internet for help and found this page:https://how-to.fandom.com/wiki/How_to_identify_inductor_markingsAnd it says that the number 333 could mean nano or micro Henry depending on the manufacturer. So I was wondering if anyone might know who the manufacturer is- and what the value could be?For reference the component measures approx 6.2mm square and is from an instrument cluster in an Audi A3 made by VDO / Siemens.Many thanks in advance,Cheers Dom.

author: bob91343
author_rank: Super Contributor
timestamp: May 18, 2020, 05:25:09 pm
content: That small, it's unlikely microhenry, more likely nanohenry.

author: madires
author_rank: Super Contributor
timestamp: May 18, 2020, 05:46:52 pm
content: EPCOS33 * 10^3nH = 33µH

author: Domokelly
author_rank: Contributor
timestamp: May 19, 2020, 01:50:31 am
content: Hi madires,You are the man!I found them on RS and have just ordered a few:https://au.rs-online.com/web/p/wire-wound-surface-mount-inductors/4958161/Thanks so much- you're a life saver!Cheers, Dom.
Need help identifying an SMA connector - Page 1
Forum section: electronics / beginners

author: shapirus
author_rank: Super Contributor
timestamp: February 21, 2024, 12:52:46 am
content: This is used for antenna connection in an Asus WiFi router.Male SMARP-SMA female, ground is soldered to PCB, signal wire is routed into it from the rear, and the coax shield appears to be crimped, by the shape of it.Is there a searchable type/model identificator for it?PCB footprint and the coax cable:

author: shapirus
author_rank: Super Contributor
timestamp: February 21, 2024, 01:48:08 am
content: As always, once you ask a question properly, a solution comes up by itself. While I haven't found an exact name of that connector (not sure if there is any), I found the same connector with a ready made cable and the other end's connector on aliexpress:https://www.aliexpress.com/item/1005006068209049.html.

author: Jwillis
author_rank: Super Contributor
timestamp: February 21, 2024, 01:56:55 am
content: Amphenol RFDatasheet

author: Smokey
author_rank: Super Contributor
timestamp: February 21, 2024, 02:33:56 am
content: Quote from: Jwillis on February 21, 2024, 01:56:55 am$34.74 in 1s!

author: Jwillis
author_rank: Super Contributor
timestamp: February 21, 2024, 04:24:46 am
content: Blame Digikey for the insane markup. The Aliexpress link comes up 404. Thought my link would help identify the connector.

author: shapirus
author_rank: Super Contributor
timestamp: February 21, 2024, 08:27:52 am
content: Quote from: Jwillis on February 21, 2024, 04:24:46 am404 was because the forum included the trailing dot into the URL. Thanks for the heads up, fixed.Your connector is almost right: it's SMA female, whereas mine turned out to be RP-SMA (reverse polarity) female. But there doesn't seem to be, or I haven't found it, any name for this specific method of the signal wire connection.
Need help identifying capacitor and connector. - Page 1
Forum section: electronics / beginners

author: MCOR
author_rank: Newbie
timestamp: April 09, 2020, 02:33:26 am
content: Hello I'm new here. I imagine this is probably obvious to many of you, but I'm new at this and would appreciate your help. I would like to put this circuit together and looking forward to ordering the necessary parts. The resistors I'm ok with. I have sourced the 2N3704 transistor but the 169B seems to be more difficult to find . Can anyone offer a suitable replacement. I believe I read somewhere that a 2N3904 would work? That's what my notes say but don't remember where I got that from. The capacitor I believe is 24nf 250v. Please correct me if I'm wrong . Also does it matter what kind of capacitor I use. I know this thing is 50+ years old but nothing I'm finding looks like this. I've been trying to piece this together on my own but thought I would consult with you here to avoid making easy mistakes. One last thing , does that connector have a name? Is it a standard thing that could be found? Thanks for any help you can give me. Looking forward to learning more. Cheers!

author: helius
author_rank: Super Contributor
timestamp: April 09, 2020, 06:14:21 am
content: It looks to me like the capacitor is red-yellow-black-red, which would be 24pF 250V.The BC169B is discontinued, but you should be able to find the similar BC239B.If you do decide to use a 2N3904, note that the pinout is reversed compared to the Siemens transistor.

author: Ian.M
author_rank: Super Contributor
timestamp: April 09, 2020, 06:45:59 am
content: Seehttps://www.petervis.com/electronics/capacitor/capacitor-colour-code.htmlThe cap is more likely red red yellow black red, which would be 0.22uF +/-20% 250V.

author: MCOR
author_rank: Newbie
timestamp: April 09, 2020, 01:04:42 pm
content: Thanks for your replies, just what I came here for. Can anyone help with the 3 prong plug?
Need help identifying components in SeekThermal - Page 1
Forum section: electronics / beginners

author: frenky
author_rank: Unknown
timestamp: June 14, 2016, 08:10:36 pm
content: I plan to draw a complete schematic of SeekThermal but I can't identify this two components:Markings: CIDimension: 1mm x 1mmElement:Pcb pads:Markings: KG 05 (or OS) 4MDimension: 2.54mm x 1.24mmElement:Pcb pads:And location of both components:Please help.

author: frenky
author_rank: Unknown
timestamp: June 15, 2016, 06:33:29 am
content: I identified the "CI" element by measuring voltage. 5V goes in and 2.8V goes out so it's voltage regulator...This one is still a mistery:Quote from: frenky on June 14, 2016, 08:10:36 pm

author: frenky
author_rank: Unknown
timestamp: June 15, 2016, 07:04:09 am
content: Ok mistery solved... All 4 pins on the left go to USB connector.
Need Help Identifying Diode-looking Cmponent - Page 1
Forum section: electronics / beginners

author: groinksan
author_rank: Contributor
timestamp: December 29, 2019, 01:34:41 am
content: I came across a bunch of these NOS components. It looks like a diode, however there is no labeling on the component. Photo is taken with a digital microscope. On the bag, it is hand-written "CAT # 92CU 1871" and "AMT. 5,1V"

author: bob91343
author_rank: Super Contributor
timestamp: December 29, 2019, 03:00:21 am
content: My guess is a 5.1 Volt zener diode.

author: googlyone
author_rank: Newbie
timestamp: December 29, 2019, 03:01:52 am
content: Initial comments:- There is something really funky going on with the plating on the leads. It seems to be scaling off, which is not a happy thing.- If I were to guess, the 1871 has a "fair" chance of being a date code, week 18 of 1971- any "diode like thing" with "5.1V" associated with it make me think of a zener diode- Just to make the above confusing, an old glass enevlope diode with "...92" written on it makes me think OA92, a very common germanium diode.Obviously the last two clues are quite contradictory - so at least one and likely both of the above clues are wrong!The only sensible advice from here is to test its forward and reverse breakdown.- Take a power supply (say 15V - or a 9V battery if you have one laying around).- Measure the voltage of the power supply / battery using your DVM- Put a resistor in series with the positive lead. (any value from say 1K to 100K will do - 10K is ideal). This acts as a current limit.- Connect the diode from the power supply negative to the open end of the current limiting resistor.- Measure the voltage across the diode using a DVM- Try this with the diode "forwards" and "backwards".If you get:- The full supply voltage one way, and 0.6V +/- 0.1V the other way you have a silicon diode- The full supply voltage one way, and 0.3V +/- 0.15V the other way you have a germanium diode- 5.1V +/- 1V one way and a low voltage the otehr way you have a 5.1V zenerElse I have no idea what you have.Bottom line though: Any component with skanky plating like that is likely to give you grief in use. Diodes are super cheap. With the possible exception of some really old germanium devices - but even then I am not convinced I would want to use them.
Need help identifying fried chip. - Page 1
Forum section: electronics / beginners

author: RosePeach
author_rank: Newbie
timestamp: October 11, 2019, 02:46:38 am
content: Hi,I recently was powering my Akai MPK Mini mkII midi keyboard from an Arduino USB Host shield and anciently supplied to high a voltage and fried a chip inside the keyboard. I would greatly appreciate it if someone could help me identify the chip so I can order a replacement from DigiKey to repair my keyboard. I have included pictures of the carnage as attachments. I believe the chip has markings that say "62 2".Thank you,Rose Peach

author: ataradov
author_rank: Super Contributor
timestamp: October 11, 2019, 03:18:06 am
content: This is a TVS diode array. Given the nature of the failure, remove it and see if the reset of the board still works. It is not essential to functionality, it is only there for protection. And it did its job. But it is possible that something else got damaged too.

author: LateLesley
author_rank: Frequent Contributor
timestamp: October 11, 2019, 09:20:48 am
content: I agree with ataradov, it looks like diode protection, and the package is marked with a "D1" which is standard for diodes.I think you have something similar to this -http://www.ti.com/lit/ds/symlink/sn65220.pdfIt's not the same package markings, but I think it's the same pinout.

author: RosePeach
author_rank: Newbie
timestamp: October 11, 2019, 01:40:20 pm
content: Thank you so much for your help. Could you help identify which package type the chip is? I'm not too familiar with the different names.

author: ataradov
author_rank: Super Contributor
timestamp: October 11, 2019, 03:48:33 pm
content: This is SOT-23-6. But again, test the rest of the board before ordering the parts. If it does not work without them removed, it will not help putting them on.

author: wraper
author_rank: Unknown
timestamp: October 11, 2019, 03:59:53 pm
content: Quote from: ataradov on October 11, 2019, 03:48:33 pmThis seem to be dual channel type with lines going through it. So it's unlikely device will work after simply removing it. You would need connect together pins 1-3 and 4-6. Also it seems as if it shorted 5V to GND through itself.

author: ataradov
author_rank: Super Contributor
timestamp: October 11, 2019, 04:03:09 pm
content: Quote from: wraper on October 11, 2019, 03:59:53 pmYes, after a closer looks at the layout, I agree.Still temporarily bypassing the device for a test might be a good idea.Quote from: wraper on October 11, 2019, 03:59:53 pmOr got way more than 5 V on the power lines.
Need help.Stupid practice of erasing chip markings, got a hold of me - Page 1
Forum section: electronics / beginners

author: Raj
author_rank: Frequent Contributor
timestamp: December 14, 2017, 03:40:26 pm
content: I've accidently bought the following module, thinking it was l298It wasn't, plus the markings are rubbed offhttps://m.ebay.com/itm/2-5A-Dual-2-Channel-Mini-DC-Motor-Driver-Module-Beyond-L298N-PWM-Speed-Control/182506614991?_mwBanner=1It looks quite similar in Pinout to the following, maybe it's a variant.-https://m.ebay.com/itm/1-5A-Dual-Channel-DC-Motor-Driver-PWM-Dual-H-Bridge-Speed-Stepper-Driver-Module/232595542473?_mwBanner=1I don't want to start a fire or have it spray blue black smoke of death on my face. Thus I need your help identifying the ic to gain access to it's datasheet.The Pinout seems to be as follows-To cap parallel to diode and resistor, positiveIn1In2Power in, positiveParallel to pin 1In3In3Positive inOut b1GndGndOut b2Out a1GndGndOut a2To me, it looks like 2 different silicon dies were combined into a single ic packageSimilar to how, a 556 is 2 dies of 555
Need help identifying IC of a latched on off module - Page 1
Forum section: electronics / beginners

author: Arek_R
author_rank: Regular Contributor
timestamp: May 07, 2024, 09:36:17 pm
content: Hi all,I'm looking for simplest compact IC that will switch power on/off via momentary tactile button.I found this module from ali:Except the LED and dropper resistor, it's just 4 components + button.Any ideas what IC is that 6 pin package?Here's the ali listing spec from the description:Quote

author: Kim Christensen
author_rank: Super Contributor
timestamp: May 07, 2024, 10:18:05 pm
content: That's probably a little microcontroller like a PIC10F200, ATTINY10, etc in a SOT-23-6.

author: Manul
author_rank: Super Contributor
timestamp: May 07, 2024, 10:40:42 pm
content: Not necessarily MCU, because such dedicated push button controllers exist, for instance MAX16054 (same 6 pin package). Regarding this module, if it uses such ASIC, it will be a part from some obscure chinese manufacturer or a clone.

author: Peabody
author_rank: Super Contributor
timestamp: May 08, 2024, 03:00:34 pm
content: Can you tell what Q1 is?

author: Arek_R
author_rank: Regular Contributor
timestamp: May 08, 2024, 06:01:31 pm
content: Seems like MAX16054 is what I could use, thanks!Q1 not sure, but most designs seem to use P channel mosfets and this one seems to have it close to the positive output so high side switching which suggests PFET as well.
Need help identifying mosfet - Page 1
Forum section: electronics / beginners

author: desertrout
author_rank: Contributor
timestamp: June 26, 2022, 02:29:19 am
content: Howdy! I'm trying to repair a small SMPS (an old 7.5V/1.5A adapter for a Macintosh Portable, circa 1990), and I'm hoping someone might be able to help identify this mosfet from the primary side (see attached - I'm assuming it's a mosfet for voltage regulation). The label has worn off... I've tried searching for what I *think* the markings are (like, 'BZB020' or 'B2802D' and many other total guesses with no luck... maybe a dumb question, but do these markings look at all familiar to anyone (or is there a naming / numbering convention that might help)??No schematic available, but happy to answer questions the best I can (as a total newb hobbyist) or share more pics if that might help.

author: Jeff eelcr
author_rank: Frequent Contributor
timestamp: June 26, 2022, 03:38:23 pm
content: I can not make out a single letter or number on that part from the pictures shown.Jeff

author: desertrout
author_rank: Contributor
timestamp: June 26, 2022, 03:38:53 pm
content: nm - looks like an IRFIBC20

author: gamalot
author_rank: Super Contributor
timestamp: June 26, 2022, 04:26:06 pm
content: It may also be a fast recovery rectifier.
Need help identifying some SMD components - Page 1
Forum section: electronics / beginners

author: runerh
author_rank: Newbie
timestamp: October 08, 2024, 09:17:24 am
content: Hello,I'm trying to repair a Bang Olufsen Beolab 3 SMP power supply, that someone before me has tried to "repair" and there are some missing components, I need help identifying.It's the small component with a white "base" and black "top", there are a few of them spread around the board, they have marking like HX, A6. I this a inductor?

author: PGPG
author_rank: Frequent Contributor
timestamp: October 08, 2024, 11:19:41 am
content: Never seen something like this but...Isn't it a socket with element inserted into it?Line at one element end suggests that may be it is a diode.

author: runerh
author_rank: Newbie
timestamp: October 08, 2024, 12:35:38 pm
content: It looks like a type of socket, but in the microscope it looks like it's soldred in there in a way.And yes, there is a line on one of the sides, there too.

author: runerh
author_rank: Newbie
timestamp: October 08, 2024, 01:03:56 pm
content: I think you are correct, it's some kind of diode.

author: Kim Christensen
author_rank: Super Contributor
timestamp: October 08, 2024, 03:32:45 pm
content: The A6 one that "looks like it's in a socket" isprobably a BAS216See attached datasheet:
Need Help Identifying Symbols - Page 1
Forum section: electronics / beginners

author: Rerouter
author_rank: Super Contributor
timestamp: June 11, 2012, 10:57:03 am
content: I'm in the process of making some old schematics more readable, but i want to be careful that i am not going to scrub something important,the schematics in question are riddled with "signatures" values that where used way back in the 80's for diagnosing hardware,these 2 keep on popping up, and while i believe the crossed zero is to differentiate from a O the tailed P i cant find info on,http://desmond.imageshack.us/Himg254/scaled.php?server=254&filename=symbols.jpg&res=cropwould anyone have any idea on what these 2 refer to?

author: Kremmen
author_rank: Super Contributor
timestamp: June 11, 2012, 12:06:54 pm
content: Seeing the symbols used in context could help a lot. Can you provide a picture of some text where they appear?

author: Rerouter
author_rank: Super Contributor
timestamp: June 11, 2012, 12:21:41 pm
content: here you are, but be warned, its a 1MB gifhttp://desmond.imageshack.us/Himg191/scaled.php?server=191&filename=data600001212.gif&res=landingon the same subject, any idea what the signatures might decode to? (bolded 4 letter values)

author: free_electron
author_rank: Super Contributor
timestamp: June 11, 2012, 02:02:56 pm
content: Looks like an old hp design. 70000 series main computer board ?The signatures are used for debugging the system. You need a model 5004 5005 or 5006 signature multimeter to do this.This si a machine that you connect to three points on the board. Typically a trigger point, a clock point and a start stop signal.The system that needs testing is put in a special mode. They let the cpu cycle NOP operations.The testprobe is then poked at various points. The signature multimeter looks at the pattern flying by and they record 16 samples that are then decoded to a hex number.If there is any problem in the system the pattern will change. So thats how you troubleshoot these things.A very helpful piece of equipment. I have one and it has helped me raise at least 4 machines from the dead...

author: Kremmen
author_rank: Super Contributor
timestamp: June 11, 2012, 05:14:29 pm
content: Yes it is old for sure. HP, DEC, Data General... maybe HP. Those symbols have nothing directly to do with the signals they are next to. My bet is some kind of debugging notation.
Need help identifying this capacitor - Page 1
Forum section: electronics / beginners

author: Crambone
author_rank: Frequent Contributor
timestamp: December 04, 2020, 06:32:05 am
content: Not sure what type of capacitor this is?

author: andy3055
author_rank: Super Contributor
timestamp: December 04, 2020, 06:44:44 am
content: An old paper or film capacitor. Contains paper soaked in some sort of oil. You can replace it with a modern make.

author: andy3055
author_rank: Super Contributor
timestamp: December 04, 2020, 06:54:39 am
content: Something like this:https://www.digikey.com/en/products/detail/sozo/CP-SZMC-047-500V/10490882
Need help identifying this part - Page 1
Forum section: electronics / beginners

author: ataradov
author_rank: Super Contributor
timestamp: March 02, 2022, 03:59:07 am
content: Thermal sensor, must likely thermal resistor. The exact part number may be harder to identify. But if it is broken, you can do a decent guess in many cases based on the schematics around it.

author: daniel818a
author_rank: Contributor
timestamp: March 02, 2022, 04:06:32 am
content: ty for the answer this append and im trying to fix it alradey cleaned it all and solderd new parts exepet this

author: ataradov
author_rank: Super Contributor
timestamp: March 02, 2022, 04:12:18 am
content: Was it actually damaged? Have you measured it? Or hos did you determine it was bad?

author: daniel818a
author_rank: Contributor
timestamp: March 02, 2022, 04:16:39 am
content: it blow up i have five pcbs the same and one of them failed

author: ataradov
author_rank: Super Contributor
timestamp: March 02, 2022, 04:18:12 am
content: Thermal resistors should not blow up. But take a closer picture of the good devices. I can only see 3 color bands, but normally there should be 4. Is there one more band that is not visible?And in any case, remove the working one from the board and measure its resistance.

author: daniel818a
author_rank: Contributor
timestamp: March 02, 2022, 04:26:07 am
content: well it did and no only 3 Colors red black and redits Connected to two of the legs to this pnphttps://datasheetspdf.com/pdf/73623/PanasonicSemiconductor/2SA1762/1

author: daniel818a
author_rank: Contributor
timestamp: March 02, 2022, 04:29:51 am
content: I measured it gives me 1.7k and if press it with my finger its goes down

author: ataradov
author_rank: Super Contributor
timestamp: March 02, 2022, 04:30:05 am
content: Which legs?I would draw a bit of a schematic around this component. And measure it out of circuit.

author: ataradov
author_rank: Super Contributor
timestamp: March 02, 2022, 04:31:57 am
content: Quote from: daniel818a on March 02, 2022, 04:29:51 amCan you get better picture/description of the colors? This behaviour looks like regular NTC resistor. But color code does not make sense to me.

author: ataradov
author_rank: Super Contributor
timestamp: March 02, 2022, 04:33:42 am
content: Although Red-Black-Red is 2K +/-20%.

author: daniel818a
author_rank: Contributor
timestamp: March 02, 2022, 04:36:12 am
content: it goes to the emitter and base

author: ataradov
author_rank: Super Contributor
timestamp: March 02, 2022, 04:38:48 am
content: You have light reflection right on the band. And red and orange look very similar. The picture needs to be much cleaner. If the colors are red-black-red, then it is 2k NTC resistor.
Need Help Identifying This Part - Page 1
Forum section: electronics / beginners

author: overlord computer
author_rank: Newbie
timestamp: October 26, 2012, 03:47:26 am
content: We are working on a TCON for LED panels and are stumped as to what this particular part does or the best way to test it to determine what it does. We have been told that cutting it open with a laser can in some instances result in a die stamp inside that better identifies the part. So a couple of questions:1. Know what this is?2. How to test it to discover what it does to find the proper replacement?3. Laser hair removal worth the cost?AC2FTY SOT-163http://www.overlordforum.com/viewtopic.php?f=26&t=127We are also looking for ongoing help from an engineer on this project - not sure if this is the best place to ask for ongoing help!Thanks!

author: nicknails
author_rank: Regular Contributor
timestamp: October 26, 2012, 11:56:25 pm
content: Can you get a close up that's more in focus? Have you tried making a rough schematic of what it's connected to?

author: tec5c
author_rank: Frequent Contributor
timestamp: October 27, 2012, 12:06:13 am
content: Where did you get this board? As in, what product did it come out of? If you have a part number for the board, could you please provide it. Also, what do you mean by "Laser hair removal worth the cost?" ?

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 27, 2012, 12:26:25 pm
content: It's a tcon for a led panel, possibly a LCD LED TV, it would be good if you provided the brand and model.

author: overlord computer
author_rank: Newbie
timestamp: October 29, 2012, 03:41:53 pm
content: This is coming from the following LG panel - a 27" computer display - LM270WQ1-SLA1. The PCB part number is 6870c-0340a_rev 0.2 also made by LG.The question is whether it would be worth it to cut open the chip to see if there is a die inside that may give a better understanding of what it does.
Need help identifying transistor symbols - Page 1
Forum section: electronics / beginners

author: chipwitch
author_rank: Frequent Contributor
timestamp: April 17, 2013, 05:51:14 pm
content: I'm sure someone here knows what these are...Plus, one between the two circles? Is it just a bjt? The wire piercing the base looks like it could be a fourth terminal.Thank you

author: madires
author_rank: Super Contributor
timestamp: April 17, 2013, 06:01:37 pm
content: Top down:- PNP BJT with dual collector- NPN BJT with a connection to the base crossing the BJT symbol :-)- NPN BJT with dual emitter

author: chipwitch
author_rank: Frequent Contributor
timestamp: April 17, 2013, 06:06:20 pm
content: I just knew I'd get a fast answer here!Thanks for the response. I'd never heard of dual terminals before.... something new to learn

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 17, 2013, 06:10:56 pm
content: You see these a lot in digital logic, for instance this is how you make a NAND gate:

author: chipwitch
author_rank: Frequent Contributor
timestamp: April 17, 2013, 07:48:47 pm
content: Okay... so the two emitter connections act as the two inputs and the path to the right, between q1 and R2 is the output? Either emitter is able to conduct through the collector? The same would be true for the double base transistor as well then?

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 17, 2013, 07:58:44 pm
content: I'm not sure if it is a double base or just a convenient/weird way of drawing a connection.

author: madires
author_rank: Super Contributor
timestamp: April 17, 2013, 08:10:20 pm
content: Quote from: PA0PBZ on April 17, 2013, 07:58:44 pmI'd go for the latter, because a (second) base should be drawn opposite of emitter and collector.

author: chipwitch
author_rank: Frequent Contributor
timestamp: April 17, 2013, 08:23:47 pm
content: I found something called a lateral bipolar that has a symbol bisecting the emitter and collector. Could that be it?

author: madires
author_rank: Super Contributor
timestamp: April 17, 2013, 08:39:38 pm
content: Quote from: chipwitch on April 17, 2013, 08:23:47 pmAFAIK, lateral specifies the way the transistor is built. The other one is vertical.

author: MacAttak
author_rank: Unknown
timestamp: April 17, 2013, 10:46:53 pm
content: Both of the symbols are described on this page:http://www.allaboutcircuits.com/vol_3/chpt_4/14.html(scroll to the bottom)As mentioned already, the middle transistor symbol is just a convenient way to lay out the schematic.The top and bottom transistors have double emitter or double collector. In essence, this just means a transistor with a larger die area (to carry higher current). It is basically the same thing as having two transistors with base plus collector (or base plus emitter) wired together. But normally this would mean slight temperature differences between the two - and this would cause them to behave ever so slightly differently. So they are packed close together on the same substrate, thereby keeping any thermal differences at an absolute minimum.
Need help identifying two FPC connectors. - Page 1
Forum section: electronics / beginners

author: mevgheni
author_rank: Newbie
timestamp: May 08, 2019, 07:36:42 am
content: I am in need of help in identifying two FPC connectors (plugs). Also, I need their mate (receptacle), but it should be easy knowing the plug.Provided are photos of the connectors with some dimensions taken. Photos of the plugs are taken by me. I do not have a receptacle to take a photo, but found some photos online (it was listed as used salvaged part, and no part number was given).Note, that the corner contacts on the big connector are partially covered with plastic.If it helps, the connectors are for Blackberry Z10 LCD (big), Touch (small), and LED Backlight (same small). Schematics for the device are available, but use internal part numbers throughout (CON-00800-001 for the big one, and CON-00737-001 for the small one).I tried Mouser, Digikey, and Octopart's parametric search, but could not find anything similar.Imgur album with photos (too big to attach to post):https://imgur.com/a/p4XbWVu
Need Help Identifying Unknown Component [SOLVED] (Preset Potentiometer) - Page 1
Forum section: electronics / beginners

author: efr450
author_rank: Newbie
timestamp: March 19, 2015, 06:48:57 am
content: Hello everyone,I'm a senior mechanical engineering student working on a project where I need to emulate the signals generate from the PCB below which are sent to a more complicated PCB, but the silkscreen print on the PCB was for some other design that it was originally used for. Anyway, I've attached pictures of the components that I need to identify - the ones covered in the red goo. I'm sure this is something common, but my best guess would have to be some sort of capacitor.Thanks for the (potential) help!Ethanedit: Marked as solved with answer in subject

author: Mr.B
author_rank: Unknown
timestamp: March 19, 2015, 06:51:02 am
content: Preset potentiometer.the 502 is 5K ohmsthe 103 is 10K ohmsEdit: Added the qualifier 'ohms'.Edit 2: Changed pots to potentiometer for absolute clarity.

author: efr450
author_rank: Newbie
timestamp: March 19, 2015, 07:00:32 am
content: Interesting, never seen these before. I'm assuming it's for calibration of the main trim pot that's on the circuit as both of the preset pots are hooked directly to the trim pots terminals? Thank you for the very fast reply!

author: Mr.B
author_rank: Unknown
timestamp: March 19, 2015, 07:02:35 am
content: Trim Pot = Preset Pot...I think you are referring to "Regular Pots" when you say Trim Pot.Cheers,

author: efr450
author_rank: Newbie
timestamp: March 19, 2015, 07:55:11 am
content: Indeed I was, been a couple years since I took an electrical engineering course and my terminology is a bit fuzzy!
Need help identifying - Page 1
Forum section: electronics / beginners

author: Raj
author_rank: Frequent Contributor
timestamp: March 23, 2020, 10:02:59 am
content: This component was parallel to mains input rectification capacitor of an SMPS. It blew up taking a fuse and tripped my house GFCI. The capacity parallel to it is also ballooned up.It looks like mains rated ceramic capacitor to me

author: dave_k
author_rank: Frequent Contributor
timestamp: March 23, 2020, 10:52:29 am
content: That's a Metal Oxide Varistor (or MOV).Your particular one is made by Maida and it's part number is D62ZOV301RA65.Link to data sheet is here:http://maida.com/wp-content/uploads/2020/02/Standard-Series.pdf
Need help IDing a component - Page 1
Forum section: electronics / beginners

author: GadgetBoy
author_rank: Regular Contributor
timestamp: June 07, 2018, 07:47:31 pm
content: Can someone help me identify and/or find a datasheet for this chip?

author: Mr.B
author_rank: Unknown
timestamp: June 07, 2018, 08:00:22 pm
content: It is very likely that you will never find a datasheet.Unknown LED driver from Aliexpress = undocumented.Even if there was a datasheet, the chances of it being in English are almost zero.

author: mbless
author_rank: Regular Contributor
timestamp: June 07, 2018, 08:03:49 pm
content: It appears to be touchpad IC ttp223-ba6. Don't know if that fits its role on the PCB given we only LEDs.And seriously, a picture of a monitor

author: GadgetBoy
author_rank: Regular Contributor
timestamp: June 07, 2018, 08:13:42 pm
content: Quote from: mbless on June 07, 2018, 08:03:49 pmThat's actually a great help (and yes, I used a picture I took of the monitor because it was handy. Playing around with a USB microscope, I wanted to quickly send a photo of it to a friend. The picture was perfectly applicable for the question).I *SHOULD* have mentioned that it's one of those cute little usb LED boards that have a touch pad on the back to turn it on and off.

author: amyk
author_rank: Super Contributor
timestamp: June 08, 2018, 12:18:35 am
content: Google "sot23-6 223B" andhttps://infusionsystems.com/support/TTP223.pdf