hybridfree/eevblog-posts huggingface dataset:
Identify header for MikroE 1530 stepper motor - Page 1
Forum section: electronics / projects

author: newtekuser
author_rank: Frequent Contributor
timestamp: January 26, 2023, 04:57:35 am
content: Purchased a MikroE 1530 stepper motor from DigiKey that I would like to mate to a header, just don't know what would work. I already purchased the wrong kind off ebay (too small).Will this work?https://www.digikey.com/en/products/detail/adam-tech/2SH-C-05-TS/9830441Stepper motor:https://www.digikey.com/en/products/detail/mikroelektronika/MIKROE-1530/5724295

author: H.O
author_rank: Frequent Contributor
timestamp: January 26, 2023, 05:59:41 am
content: There's adatasheetfor the motor, it shows that the connector on the motor is aJST XHP-5.Matching header would be B5B-XH-A (for top entry), Digikey P/N 455-2270-ND.

author: newtekuser
author_rank: Frequent Contributor
timestamp: January 26, 2023, 06:15:16 am
content: Thank you very much! I did read the data sheet, but never occured to me to look at the diagram below, doh!
Identify my chip (should we have a separate forum for this?) - Page 1
Forum section: electronics / projects

author: JJalling
author_rank: Unknown
timestamp: July 30, 2021, 08:30:03 pm
content: Hello, I'm in the progress of sorting and organising all my components. I have this tube with some 16-pin qfn devices. The marking says:MGAX1243CCA(see attached picture)My best guess is that it's a Microchip device, but I cannot identify it.Just before I throw it out, please confirm that it's not a 500USD super FPGA unobtainium deviceBR Jonas

author: kilobyte
author_rank: Regular Contributor
timestamp: July 30, 2021, 09:08:12 pm
content: Hi,it looks like it could be a PIC16F1503(T)-I/MGMarking: MGABR Kai

author: JJalling
author_rank: Unknown
timestamp: July 31, 2021, 12:06:13 pm
content: Quote from: kilobyte on July 30, 2021, 09:08:12 pmThanks Kai,How did you find it? I didn't have any luck on google.BR Jonas

author: jpanhalt
author_rank: Super Contributor
timestamp: July 31, 2021, 12:14:35 pm
content: Re: Separate forum?There is a sticky in General Chat:https://www.eevblog.com/forum/chat/what_s-this-please-(component-advice)/I have no problem, though, with separate posts as you did.

author: Leo Bodnar
author_rank: Frequent Contributor
timestamp: July 31, 2021, 12:38:11 pm
content: It's in the datasheethttps://ww1.microchip.com/downloads/en/DeviceDoc/40001607D.pdfQuote from: JJalling on July 31, 2021, 12:06:13 pm

author: JJalling
author_rank: Unknown
timestamp: July 31, 2021, 01:29:52 pm
content: Quote from: Leo Bodnar on July 31, 2021, 12:38:11 pmI think you misunderstand my question - where did he find the link between MGA and PIC16f1503? Or are you suggesting that he just happened to have that specific datasheet open?BR Jonas

author: kilobyte
author_rank: Regular Contributor
timestamp: August 01, 2021, 04:17:10 pm
content: I got lucky and google delivered a chinese page smdmark.com where the PIC and the marking code was listed, after this I verify the info from the datasheet.

author: JJalling
author_rank: Unknown
timestamp: August 01, 2021, 06:33:16 pm
content: Quote from: kilobyte on August 01, 2021, 04:17:10 pmBummerI was hoping for a large database, that I didn't know of. But thanks for helping in the first place.BR Jonas

author: JJalling
author_rank: Unknown
timestamp: August 06, 2021, 06:54:37 pm
content: Quote from: Leo Bodnar on July 31, 2021, 12:38:11 pmLeo Bodnar, did you have a lookup table for this?BR Jonas
[Solved] Identify NEC BI0474 734P902    -8 chip - Page 1
Forum section: electronics / projects

author: Retirednerd2020
author_rank: Regular Contributor
timestamp: October 14, 2019, 08:48:51 pm
content: I have a bunch of these from a Gould logic analyzer tear-down. They appear to be memory devices, I think -8 is probably 8nS speed. Does anyone have a data sheet on these? I couldn't find anything using the usual searches. PN may be B10474 vs BI0474. These are 24 Pin ceramic DIP devices. My guess is that they are static memory but only a guess.Thank you for your help.

author: amyk
author_rank: Super Contributor
timestamp: October 15, 2019, 03:03:19 am
content: Pictures would help...

author: jhpadjustable
author_rank: Frequent Contributor
timestamp: October 15, 2019, 03:28:17 am
content: Data is thin on the web, but uPB10474 seems to be a 1kx4-bit 10K ECL RAM. Found this, though.

author: Retirednerd2020
author_rank: Regular Contributor
timestamp: October 15, 2019, 05:31:18 pm
content: Thank you jhpadjustable! Try as I might I could not find that datasheet. I think I even looked at Datasheetcatalog.com, must have typed it wrong... That is the correct part data as it fits with the rest of the ECL logic on the board and power/ground locations etc. The ones I have appear to be a prior generation or maybe just a slower speed than the datasheet shows. Case closed!amyk - No pics, sorry. Away on travel right now. It is a narrow cerdip with a shiny steel center cover. Marked "NEC" and with the numbers I included above.

author: dom0
author_rank: Super Contributor
timestamp: October 15, 2019, 11:38:49 pm
content: I always find it amusing how almost every chip is marketed with "Low power" on datasheet page no 1. "Low power - 1.6 W". [Of course this is actually reasonable for ECL, but there really isn't anything "low power" about ECL devices in general].
Identify PCB to DIP socket connector - Page 1
Forum section: electronics / projects

author: Circlotron
author_rank: Super Contributor
timestamp: April 20, 2020, 12:58:40 am
content: Can anyone tell me what this kind of connector is called? Some years ago we used them to plug an add-on pcb into a micro’s dip socket to add new functions to customers’ existing boards. Now I am hoping to find a 32 pin version so we can replace an eprom with SMD 5V parallel flash memory.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: April 20, 2020, 03:38:50 am
content: Called a 150, I guess.https://www.mill-max.com/products/socket/150-xx-xxx-00-001000There's also SMT and board-edge IC-style pins for making DIP modules, which are probably newer and cheaper than Mill-Max.Tim

author: magic
author_rank: Super Contributor
timestamp: April 20, 2020, 07:25:12 am
content: "Round pin headres", "machined pin headers" or anything like that. In Poland they call them "precision pin headers" for reasons entirely elusive to me. They are very common, I'm sure every supplier has a lot of them from a bunch of vendors at varying quality. Look in "connectors" → "pin headers" or similar categories.

author: Ian.M
author_rank: Super Contributor
timestamp: April 20, 2020, 09:17:50 am
content: GooglingM-M turned pin headershould find them. Narrowing the search down to ones compatible with specific sizes of DIP socket is more difficult, however long SIL strips of M-M turned pins are readily available and can be cut to length as required.N.B. the SIL strips usually require an assembly jig to keep them vertical on both sides of a DIL footprint during hand-soldering.The board-edge pins T3sl4co1l suggested are vastly superior as you can get ones that are thin and flat enough not to distort a leaf contact DIP socket, and they are also notably more robust as their pins can be straightened if bent, whereas turned pin headers have a nasty tendency to fracture at the base of the thin section of the exposed pin if abused.

author: Benta
author_rank: Super Contributor
timestamp: April 20, 2020, 10:32:40 am
content: www.precidip.comNo affiliation.
Identify PCB? - Page 1
Forum section: electronics / projects

author: wd5jfr
author_rank: Regular Contributor
timestamp: August 22, 2020, 04:07:15 pm
content: Found at a hamfest. Looks like some kind of heavy duty power filter. Any ideas.

author: wraper
author_rank: Unknown
timestamp: August 22, 2020, 04:15:57 pm
content: 3 phase mains filter. Nothing special about it.Similar to this except it does not have bleeding resistors:

author: wd5jfr
author_rank: Regular Contributor
timestamp: August 22, 2020, 04:52:32 pm
content: That was quick thanks.

author: wd5jfr
author_rank: Regular Contributor
timestamp: August 22, 2020, 06:38:48 pm
content: Good inspection but it has 3 you couldn't see because of the camera angle.The 1.5uf caps are rated at 275Vac. So it must have been on a 240Vac system. The toroids are wound with No. 8 wire but the PCB traces would not have anywhere near the current carrying capacity. The lower resistance of No. 8 wire would result in a higher Q but I wonder if that's important in 60 Hz power filter. I'm curious if this was done because they just stocked heavy toroids.

author: wraper
author_rank: Unknown
timestamp: August 22, 2020, 07:23:50 pm
content: Quote from: wd5jfr on August 22, 2020, 06:38:48 pmIf you look at the schematic I provided, those caps make star connection. So 275V X2 caps work perfectly for 400V 3 phase or anything with lower voltage. And yeah, there are bleeding resistors after all, they were simply hidden on the first photo.

author: wd5jfr
author_rank: Regular Contributor
timestamp: August 23, 2020, 12:26:38 am
content: Any idea of why they used N0. 8 wire to wind the toroids?

author: wraper
author_rank: Unknown
timestamp: August 23, 2020, 07:53:26 am
content: It seems that traces to inductors go on both sides of PCB thus have higher current carrying capability that it may seem. Wire thickness does not seem disproportionate to me.
Identify push button and/or suggest similar - Page 1
Forum section: electronics / projects

author: ataradov
author_rank: Super Contributor
timestamp: December 08, 2021, 05:44:57 pm
content: Some time ago I extracted the pictured buttons from some broken car infotainment system. I really liked their action. They are somewhat soft with no audible click, but there is a nice tactile feel when you press it. The press force required is slightly lower than of a typical 6x6 mm tactile button.The size of the body is about 5x5 mm.I'm looking for similar buttons. I don't need this exact one or footprint to match. I need it for a new application, but I want to have the same feel.Any ideas?

author: ataradov
author_rank: Super Contributor
timestamp: December 08, 2021, 07:20:10 pm
content: Found them on AliExpresshttps://www.aliexpress.com/item/4000678658427.html

author: gamalot
author_rank: Super Contributor
timestamp: December 08, 2021, 07:36:32 pm
content: Panasonic manufacture similar (maybe the original) buttons:https://octopart.com/search?q=evpas

author: gamalot
author_rank: Super Contributor
timestamp: December 08, 2021, 07:48:17 pm
content: Quote from: gamalot on December 08, 2021, 07:36:32 pmWell, I was wrong, these ALPS buttons look exactly like yours:https://octopart.com/search?q=ALPS+SKPM

author: ataradov
author_rank: Super Contributor
timestamp: December 08, 2021, 08:09:36 pm
content: I ordered clones. Next time I need something from mouser I'll order Alps ones and we'll see if there is a practical difference between them. There is certainly a price difference.
Identify smd component top marking GS9* - Page 1
Forum section: electronics / projects

author: Hata
author_rank: Newbie
timestamp: August 11, 2021, 05:08:20 am
content: need help identify smd compenent dfn-8 2x2 for marking GS9*

author: amyk
author_rank: Super Contributor
timestamp: August 11, 2021, 01:35:23 pm
content: ETA3000D2I
Identify this Capacitor - LG 820 C 5YC - Page 1
Forum section: electronics / projects

author: kolbep
author_rank: Frequent Contributor
timestamp: January 08, 2022, 06:39:51 pm
content: Hi All.Trying to repair a Playstation 4 Powersupply that I suspect is bad caps.The only caps I have not replaced yet are the ones on the 12v Bus, but Can't identify what Rating/ Type.ThanksPeter

author: picburner
author_rank: Frequent Contributor
timestamp: January 08, 2022, 07:03:21 pm
content: They should be the capacitors in the attached datasheet, 820µF 16V

author: kolbep
author_rank: Frequent Contributor
timestamp: January 08, 2022, 07:19:49 pm
content: Thank youThat is the one....P
Identify this component - Page 1
Forum section: electronics / projects

author: jimcuk
author_rank: Newbie
timestamp: March 23, 2021, 02:55:34 pm
content: Hi Folkscan anyone identify this component labelled F25?

author: cheater
author_rank: Regular Contributor
timestamp: March 23, 2021, 03:56:04 pm
content: Hey there. It would be super helpful if you showed more of the board and told us what the device is.

author: jimcuk
author_rank: Newbie
timestamp: March 23, 2021, 04:02:29 pm
content: Sure, It is a C band solid state power amplifier

author: Benta
author_rank: Super Contributor
timestamp: March 23, 2021, 04:06:42 pm
content: A microwave transistor of some sort.A wild guess could be Fujitsu Compound semiconductors Inc., sold to Sumitomo and now called Eudyna.
Identify this connector (M8 thread, circular, 4 contact) - Page 1
Forum section: electronics / projects

author: Corporate666
author_rank: Unknown
timestamp: October 03, 2018, 07:11:29 pm
content: I have some Keyence GT/GT2 sensors that use a metal, 4-position connector with a threaded M8 shroud. I would like to make some custom breakout cables for these, and so I would like to know who makes this connector. I doubt Keyence is making this connector themselves, but maybe they are?Anyway, I have attached some pictures - I am sure someone recognizes this beast if they've used it before. There are a ton of 4-pos circular connectors on Digikey, so rather than spend hours searching, perhaps someone recognizes it and can tell me the manufacturer/model of it?Thanks!

author: AndyC_772
author_rank: Super Contributor
timestamp: October 03, 2018, 07:35:29 pm
content: Could it be something like this?https://uk.farnell.com/hirschmann/elst-4408rvfm805/plug-panel-m8-4way/dp/1207162?st=m8%20circular%20connector

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 03, 2018, 08:17:09 pm
content: Looks like a standard M8 industrial sensor connector, though thread looks a bit short. "M8 connector" will find lots of products.

author: SiliconWizard
author_rank: Super Contributor
timestamp: October 03, 2018, 11:22:27 pm
content: To me it looks like a Switchcraft/Conxall 614PCCM:http://www.switchcraft.com/Product.aspx?ID=8924
Identify This connector  - Page 1
Forum section: electronics / projects

author: LaserSteve
author_rank: Super Contributor
timestamp: February 22, 2017, 06:20:19 pm
content: I'm breaking forum etiquette and double posting, Please forgive me, but repairs has low traffic compared to P.D.T.S.Does anyone recognize this connector? I need a manufacturer's name...Thanks in Advance,Steve

author: MagicSmoker
author_rank: Super Contributor
timestamp: February 22, 2017, 06:27:35 pm
content: It sorta looks like JST or Hirose and, obviously, those are quick disconnect terminals so that should help narrow down the possibilities once you start searching a manufacturer's catalog.

author: nali
author_rank: Frequent Contributor
timestamp: February 22, 2017, 06:32:36 pm
content: Looks like it might be Molex Appli-Mate, e.g. Molex p/n 0919990499

author: halexa
author_rank: Regular Contributor
timestamp: February 22, 2017, 08:05:40 pm
content: Pretty sure it's the RAST connector system.http://www.te.com/usa-en/products/connectors/pcb-connectors/wire-to-board-connectors/wire-to-board-headers-receptacles/rast-25-and-5-tab-headers.html?tab=pgp-storyhttp://www.molex.com/molex/products/group?key=rast_connector_system&channel=products

author: LaserSteve
author_rank: Super Contributor
timestamp: February 23, 2017, 01:52:00 pm
content: Thank You!This way I don't have to spend 1500$ of taxpayer money on a new wiring harness, yet can stay in "compliance" on the lab's high speed centrifuge. All repairs must be with exact parts, or if we ever send it back to the factory for repairs, we have to pay for it to be restored to "factory".Much Obliged,Steve
Identify this connector please? - Page 1
Forum section: electronics / projects

author: Circlotron
author_rank: Super Contributor
timestamp: November 15, 2018, 06:58:41 am
content: Have to find a mating pcb connector for this baby. Pin spacing looks to be 0.1 inch with the last pin spaced 0.15 inch. Could anyone please tell me what series this might be?Edit -> Just noticed writing on plastic moulding - MXS6 and 90156.Edit #2 -> found it.https://au.rs-online.com/web/p/pcb-connector-housings/3606134
Identify this connector please? - Page 1
Forum section: electronics / projects

author: cdevidal
author_rank: Regular Contributor
timestamp: December 03, 2020, 01:43:15 am
content: Thinking of buying this supply and would love to know what kind of connectors these are. Manufacturer sales rep does not knowWhen ordered, they send a cable already connected but I would need a second one.https://www.alibaba.com/product-detail/Top-quality-ETL-FCC-certificated-12v_60131671414.html?spm=a2700.12243863.0.0.4f4e3e5fT81HSz

author: cdevidal
author_rank: Regular Contributor
timestamp: December 03, 2020, 01:47:07 am
content: Rep said this is the most popular one of the four.

author: cdevidal
author_rank: Regular Contributor
timestamp: December 03, 2020, 01:53:06 am
content: He said he does not know how to say it in English. I asked for the Chinese name双月防水母座 2.35 尺寸（内径）This roughly translates to Double Moon Waterproof Female 2.35 dimensions (inner diameter)Googled around, no luck.

author: bob91343
author_rank: Super Contributor
timestamp: December 03, 2020, 06:48:32 am
content: Switchcraft makes some similar connectors. Perhaps they can offer a mating part or at least a similar one so you can convert to it.
identify this inductor - Page 1
Forum section: electronics / projects

author: electrolust
author_rank: Unknown
timestamp: May 13, 2017, 12:49:12 am
content: Inductor from a 5.3kHz LC resonant circuit (heart rate receiver). It's a no lead package and I don't have hot air so I think too challenging for me to remove from the board. The 2 caps that are in parallel are tiny little fuckers (an 0201 and an 0402 from the looks of it) and those too would be difficult for me due to the size and the placement. (If I could remove the caps and measure them, I could determine the inductance since I know the resonant frequency.)The markings areEPCOS502605A0001*71892-?*9472The * markings are different from part to part. I can't find 502605 or 502605A0001 in EPCOS part numbers so I'm at a loss. Nor can I even find this shape/package of inductor at all.The dimensions are 11.42L x 3.46W x 2.00H (mm).

author: BrianHG
author_rank: Super Contributor
timestamp: May 13, 2017, 01:25:13 am
content: That looks more like a filter or delay line rather than just a simple inductor.If 94 is the year of the date code, good luck finding a matching 23 year old part.

author: bktemp
author_rank: Super Contributor
timestamp: May 13, 2017, 04:54:12 am
content: Quote from: BrianHG on May 13, 2017, 01:25:13 amI doubt 94 is the date code, because there were no 0402/0201 parts in 1994.https://en.tdk.eu/tdk-en/529762/products/product-catalog/inductors--coils-/transponder-coils/epcos-transponder-coilshttps://en.tdk.eu/inf/30/ds/B82450H2364A000.pdfIt is a different part number, but the mechanical dimensions match.Maybe it is a custom variant?

author: electrolust
author_rank: Unknown
timestamp: May 15, 2017, 06:53:56 pm
content: That must be it!! Thanks so much!If you go by the data sheet for the current part, 9472 (another one I have in front of me is 9490) does seem like a date code. The data sheet says the format is YWWD so that'd be 1999 / 2009, week 47, tuesday. The data sheet for the board this part is on is dated 2010 so I will guess 2009 for the component date.The board it's on has a custom ASIC, so it is definitely made in sufficient quantity to justify a custom/customized EPCOS coil. Or: it looks like TDK bought EPCOS in 2008, so that is roughly the proper timing for a part numbering scheme change. So it could have been a standard part that now has a different p/n equivalent. Given that a standard coil could be tuned to whatever frequency by selecting different capacitance I'm not sure why a custom part would be warranted.One of the other markings certainly must encode the L value. I will do my best to remove one and check the inductance. While I don't have hot air, we do have a plastic welder in our open lab so I suppose if I can control the heat well enough it'll work just as well. I can afford to destroy one of the boards if it comes to that.
Identify this LCD? - Page 1
Forum section: electronics / projects

author: SeoulBigChris
author_rank: Regular Contributor
timestamp: August 29, 2019, 11:27:34 pm
content: My wife got a new car last month, and the dealer installed a third-party radio / navigation console. On delivery, we got a box of parts that were removed for the installation. None of the parts were interesting except this one LCD. I figure that an LCD designed to withstand the interior dashboard temperatures of car in the summer heat must be pretty rugged. But I can't find any information online about this display, other than locating the manufacturer's site:http://www.trulyamerica.com/products/tft-modules/The car is made by Kia, called the KiaMorning. I thought it was not exported, but a quick Google search shows that it is called thePicantoin other countries.

author: wictor
author_rank: Regular Contributor
timestamp: August 30, 2019, 08:45:50 am
content: Hi!Quite often they are custom designs and there is no datasheets available online. Sometimes it's hard to get the datasheet even though you are buying thousands of displays.

author: Gyro
author_rank: Super Contributor
timestamp: August 30, 2019, 04:40:33 pm
content: Well I can't get you too far, but the LCD is made by Truly Semiconductor Ltd. I suspect that the company originates in Korea, so at least you speak the same language.I managed to get as far as their standard products on their US site...http://www.trulyamerica.com/products/tft-modules/#EDIT: Sorry, looking at the company info, that might be China. If you have the unit that it plugs into, Kia are very good at documenting their interface connector pinouts in their service manuals.P.S. Sorry, I completely missed that you had already found the Truly site.
Identify this LED Buck Driver IC? - Page 1
Forum section: electronics / projects

author: wholder
author_rank: Regular Contributor
timestamp: July 09, 2019, 12:48:14 am
content: I've reversed engineered the schematic (see attached) for a laser diode driver circuit used in a laser engraver that I think is using an LED Buck driver as the main IC. However, as usual, the 8 pin SOIC IC contains no visible markings. So, I'm hoping someone can help me identify a probable part number for the IC based on the schematic. Any have any ideas?Wayne

author: Jannehrl
author_rank: Contributor
timestamp: July 09, 2019, 09:07:33 am
content: I assume that the 220nF capacitor is a inductor? Im not so familiar with us symbols so sorry if im mistaken.Anyway, it doesnt look like anything special, there are many many LED drivers that have the same functionwith different configurations to enhance certain characteristics or to add features.Maybe i can help you by giving an example:PAM2863ECRAP8801SG-13NCL30160DR2G

author: wholder
author_rank: Regular Contributor
timestamp: July 09, 2019, 08:18:38 pm
content: > I assume that the 220nF capacitor is a inductor?Yes, sorry, the inductor should have been labelled 220uH, not 220nF.> there are many many LED drivers that have the same function> with different configurations to enhance certain characteristics or to add features.I'm trying to identify a device that matches the pinout to see if it can help narrow down the specs for the device. So far, the Diodes Inc devices, such as the AP8801SG-13 and the PAM2863ECR are the closest, but the pins don't match up.This IC came from a laser engraver that is advertised as putting out 3500mW. I'm trying to determine if this claim is even close to reality by analyzing the circuit. I'm also trying to understand how the PWM input works and the function of the 900nF cap on pin 6.Wayne

author: Jannehrl
author_rank: Contributor
timestamp: July 15, 2019, 09:49:20 am
content: I highlighted the PWM part with red of the NCL30160. I also made a small diagram as how the Signal probably look like. If your PWM signal is low, the LED current is blocked by the FET.If your PWM signal is high, the regulator aplies a PWM with a higher Frequency in order to control the LED current by the coil. The dutycycle is most probably not 50/50 as i have drawn it.The Wattage of 3.5W should be no problem for the Driver itself. The NCL30160 has a max driving current of 1.5A and with an assumed diode forward voltage of 3.3V, the resulting power is approximately 5W.But that doesnt mean that the LED can handle it.The 900nF capacitor might also be 1uF if you look at the tolerance of normal capacitors and the accuracy of capacitance measurement.If this is the case, this is just another decoupling capacitor with no special function.

author: wholder
author_rank: Regular Contributor
timestamp: July 16, 2019, 09:36:19 pm
content: I use DigiKey's online editor, Scheme-it:https://www.digikey.com/schemeit/project/Wayne

author: Jannehrl
author_rank: Contributor
timestamp: August 05, 2019, 03:07:33 pm
content: Interesting haha, im sorry but i really just drew that in MS Paint.The Style is what was expected by my teachers.
Identify this material!  - Page 1
Forum section: electronics / projects

author: CodeBreaker
author_rank: Newbie
timestamp: May 17, 2018, 12:39:29 pm
content: Hi guys!!Can anyone identify the material shown in the attached pictures? It is used at the back of a RFID reader coil. I'm assuming to isolate the magnetic field to just 'read' in one direction.

author: mjs
author_rank: Regular Contributor
timestamp: May 17, 2018, 12:46:59 pm
content: Google for "flexible ferrite sheet". Basically it stops the magnetic field at one direction. Metal plate would also do that, but the currents in the metal plate would also 'kill' the field in the wanted direction.NFC tags that work on metal surface also use this stuff.

author: Gregg
author_rank: Super Contributor
timestamp: May 17, 2018, 07:56:05 pm
content: It could be mu metal.

author: amyk
author_rank: Super Contributor
timestamp: May 18, 2018, 04:13:50 am
content: Quote from: Gregg on May 17, 2018, 07:56:05 pmUnlikely, given the texture and thecostof mu metal.

author: JohnnyMalaria
author_rank: Super Contributor
timestamp: May 18, 2018, 04:31:41 am
content: Graphene/polymer (used for EMI shielding)
Identify this part? - Page 1
Forum section: electronics / projects

author: Wimberleytech
author_rank: Super Contributor
timestamp: January 02, 2019, 09:42:06 pm
content: Pretty sure it is a SMPS but, who makes it? My Google attempts returned void

author: Wimberleytech
author_rank: Super Contributor
timestamp: January 02, 2019, 10:09:46 pm
content: That was quick!!!...how confident are you?

author: ejeffrey
author_rank: Super Contributor
timestamp: January 02, 2019, 10:24:28 pm
content: http://www.ti.com/packaging/docs/partlookup.tspType 7041 in there. Its the only 6 pin package with that marking from TI. You could check other vendors if the wiring doesn't make sense.
Identify this part? - Page 1
Forum section: electronics / projects

author: Wimberleytech
author_rank: Super Contributor
timestamp: March 02, 2019, 10:17:34 pm
content: I got a bunch of parts from a friend recently. Before becoming a patent attorney, he was doing RF design back in the 70s. This is likely high-frequency RF transistor. Dunno if it is MOS or Bipolar. Looks like pretty heavy gold flash. I did some google searching and will continue to do so...maybe somebody knows this part personally and can enlighten me.Also in the stuff are some vintage 555s in TO-5 packages...pretty cool. I tested one for grins...still works.

author: Gyro
author_rank: Super Contributor
timestamp: March 02, 2019, 10:35:32 pm
content: QuoteThat wouldn't be Joe Geller would It?

author: Wimberleytech
author_rank: Super Contributor
timestamp: March 02, 2019, 10:38:47 pm
content: Nope! Good guess I suppose.

author: Gyro
author_rank: Super Contributor
timestamp: March 02, 2019, 10:42:19 pm
content: Itwasbit of a long shot, I knew he was a patent attorney and that Geller Labs was a side interest. Sorry I can't help with the ID but you might want to take precautions against Beryllium dust with '70s power RF parts... just in case.

author: RFMWdude
author_rank: Contributor
timestamp: March 02, 2019, 11:04:23 pm
content: For what it's worth: the logo is that of Fujitsu.

author: Benta
author_rank: Super Contributor
timestamp: March 02, 2019, 11:42:13 pm
content: Quote from: RFMWdude on March 02, 2019, 11:04:23 pmSpot on!Looks like a RF/microwave power transistor.

author: coromonadalix
author_rank: Super Contributor
timestamp: March 03, 2019, 04:52:16 am
content: should be in this familyhttps://www.rf-microwave.com/en/transistors-rf-power-fet-gaas-fet/532/

author: IconicPCB
author_rank: Super Contributor
timestamp: March 03, 2019, 05:15:47 am
content: WHAT GYRO SAID....Cant say it loud enough.

author: RES
author_rank: Regular Contributor
timestamp: March 03, 2019, 08:06:35 am
content: https://nl.aliexpress.com/store/product/5BBELLA-5D-Japan-FLL9208-original-Fujitsu-RF-microwave-high-frequency-power-transistor-252d-252d2PCS-2FLOT/119293_32693997322.html

author: Wimberleytech
author_rank: Super Contributor
timestamp: March 03, 2019, 01:13:29 pm
content: Quote from: RES on March 03, 2019, 08:06:35 amThanks. Wow $60 per. I wonder if the value is due to rarity, or were these always expensive. I have about 20.

author: coromonadalix
author_rank: Super Contributor
timestamp: March 03, 2019, 03:19:15 pm
content: We use at our company rf mosfets at 45$ usd each and another rf transistor at 50$ usd loll

author: Wimberleytech
author_rank: Super Contributor
timestamp: March 03, 2019, 03:33:46 pm
content: Quote from: coromonadalix on March 03, 2019, 03:19:15 pmPerhaps I should put these on ebay. I don't do any significant RF stuff...certainly not where these would be used.Thanks for the input!

author: Benta
author_rank: Super Contributor
timestamp: March 03, 2019, 04:52:05 pm
content: 60$ would not be unusual for microwave power transistors.Don't mess around with them. First off, they are sensitive, and as Gyro said might contain beryllium or other nasties.
Identify this PCB/Manufacturer mark - Page 1
Forum section: electronics / projects

author: azone
author_rank: Newbie
timestamp: December 06, 2017, 11:33:20 pm
content: I have a PCB - I'm trying to figure out who made it (see pics).It has a mark I've seen before but google sleuthing didn't come up with much. I'm not sure if this mark is a quality/spec marking or the actual manufacturers mark.If you think you know the marking any insight would be great.

author: senso
author_rank: Frequent Contributor
timestamp: December 07, 2017, 12:36:05 am
content: Who made the pcb itself, or who designed it?

author: azone
author_rank: Newbie
timestamp: December 07, 2017, 01:02:54 am
content: The manufacturer. I think I found them.http://enus.cheer-time.com.tw/
Identify this plastic pcb support extrusion? - Page 1
Forum section: electronics / projects

author: Circlotron
author_rank: Super Contributor
timestamp: March 06, 2019, 11:25:51 pm
content: Came across a neat plastic extrusion in an old piece of equipment that was used to support a pcb onto a flat surface. It is about 60mm wide at the outside. Any ideas what it is or who makes something similar?

author: Nusa
author_rank: Super Contributor
timestamp: March 06, 2019, 11:52:22 pm
content: Searching for "plastic extrusion pcb holder" gets you some similar stuff.
Identify this Surface Mount Component - Page 1
Forum section: electronics / projects

author: Rofflesaur
author_rank: Contributor
timestamp: September 26, 2019, 04:59:02 am
content: On today's episode of Name this Component:What the heck is this?I'm troubleshooting an RF receiver for an automotive RF keyless entry module. While checking various components on the board, I came across that. It looked like a fuse, so I tested continuity and there was none. It's so far on the back of the board and nowhere near where power enters, so what would a fuse be doing there? It appears to have the number 4.0 on it, and the area of the PCB where it sat was labeled "X1." Here's a pic of that...Edit: This board is from 1997, so it may not be something that's used in modern designs.

author: Mark
author_rank: Frequent Contributor
timestamp: September 26, 2019, 05:07:53 am
content: Xtal

author: Rofflesaur
author_rank: Contributor
timestamp: September 26, 2019, 05:17:31 am
content: Quote from: Mark on September 26, 2019, 05:07:53 amIn a glass MELF package? Is that a thing? Lol.

author: DaJMasta
author_rank: Super Contributor
timestamp: September 26, 2019, 05:38:36 am
content: Looks like it is, X is a crystal designation and it's got the load caps on either terminal, so I'd assume it's a 4MHz crystal.

author: Rofflesaur
author_rank: Contributor
timestamp: September 26, 2019, 05:53:41 am
content: I think you guys are correct. I didn't even know such a thing existed! I connected it back to the vehicle and probed the component with my DVM (don't have a portable scope). I very briefly saw 3.98Mhz before it crashed from the additional loading. I suppose I'll post in the RF sub forum tomorrow, as this is out of my area of expertise. Thanks.

author: TimNJ
author_rank: Super Contributor
timestamp: September 27, 2019, 02:59:59 am
content: It's a Murata CSAC series ceramic resonator.https://www.rf-microwave.com/en/murata/csac4-00mgc/4-mhz-ceramic-resonator/rce-4m-a/
Identify this tactile switch on car remote control? - Page 1
Forum section: electronics / projects

author: Circlotron
author_rank: Super Contributor
timestamp: May 15, 2014, 02:38:40 am
content: A friend asked me to look at the remote control thing for his car. It has four surface mount tactile switches that are all gummed up and only one of them moves anymore. Had a look through the element 14 catalogue and couldn't find a suitable replacement - they are all too big. The centre-to-centre distance of the legs is 3.5mm, and the tip-to-tip distance of the legs is 6.5mm best I could measure. Can anyone identify these switches? See pics.Alternative approach - it is for a ~10 yo Nissan Pulsar and a replacement costs ~AUD200. If anyone knows of a place where you can buy cheap replacement ones that would be good.

author: TVman
author_rank: Frequent Contributor
timestamp: May 15, 2014, 04:15:45 am
content: E14 catalog really sucks, DON"T go there.If your willing to do some SMD Soldering look at Digikey.I have provided A link to some tactile buttons.http://www.digikey.com/product-search/en/switches/tactile-switches/1114206?k=smd%20tactile%20buttonHunor

author: rauloliv
author_rank: Contributor
timestamp: May 15, 2014, 07:44:33 am
content: Don't know the part number but searching for it by its measurements will get you there.I think that one is either a 4x4x1.5mm or 5.2x5.2x1.5mmBye

author: RoadRunner
author_rank: Frequent Contributor
timestamp: May 15, 2014, 07:50:41 am
content: Quote from: rauloliv on May 15, 2014, 07:44:33 amlike rauloliv said you have to make sure what size it is , and they are fairly commonhttp://www.ebay.com/itm/10Pcs-Tactile-Push-Button-Switch-4x4x1-5mm-4Pin-SMD-SMT-Component-/251337334620?pt=LH_DefaultDomain_0&hash=item3a84df5f5c

author: Circlotron
author_rank: Super Contributor
timestamp: May 23, 2014, 10:28:16 am
content: Thanks to all that helped. Switches arrived today. A lifetime's worth.http://www.ebay.com/itm/100x-Momentary-Tact-Tactile-Push-Button-Switch-4-Pin-SMD-Surface-Mount-5x5x1-5mm-/230911337020?pt=LH_DefaultDomain_0&hash=item35c363623cHad the old ones off and new ones on in about 15 minutes. Only thing now is, there seems to have been a hard surface under the rubber pushbutton that touches the tip of the switch. That has melted or dissolved away somehow and you need to push the dead centre of the external button with your fingernail to make the switch click instead of more or less anywhere. Oh well; getting there.

author: amyk
author_rank: Super Contributor
timestamp: May 23, 2014, 01:23:52 pm
content: You really bought 100 of them...A spacer can be glued onto the button to resolve your standing issue.

author: SeanB
author_rank: Super Contributor
timestamp: May 24, 2014, 12:42:27 pm
content: I just did the same. I can always use them, as my neighbour has a PUG and a faulty remote. Replacement is something horrible price wise, so it will be nice to fix it for this old nurse.
Identifying a chip / pair of.. - Page 1
Forum section: electronics / projects

author: MyElectronsFellOut
author_rank: Regular Contributor
timestamp: January 31, 2014, 12:22:20 pm
content: Hi guys,I'm tearing down a cheap chinese remote control car as part of a Uni project and am trying to identify a chip or pair of chips rather. One in the car and one in the remote.The IC in the car is a 14 or 16 pin (can't remember off top of my head) SMD chip with the following number: LOG RX2 1336The one in the remote control is the exact same size but has the code: LOG TX2 1334My initial thought was that it's some sort of transmitter / reciever paired devices, but no amount of asking Dr.Google has revealed a datasheet. The LOG bit i'm assuming is the manufacturer? Though not listed on any reputable sites.I should say, the car operates on the 40MHz freq.

author: Fraser
author_rank: Super Contributor
timestamp: January 31, 2014, 03:58:14 pm
content: With terms like RX2 (Receiver 2) and TX2 (transmitter 2) these look to be propriatary devices designed to keep costs to a minimum. I suspect the 27MHz version would be RX1 and TX1 ? It would not be unusual for the chip ID to be just TXx and RXx with the 4 digit numbers being batch or date coding (YearWeek)The chips are usually a 'radio on a chip' type of technology with just a few external components needed to build teh transmitter or receiver. Older transmitter designs in toys used to use an encoder chip driving an RF stage and in the receiver there was an RF stage feeding the signal to a decoder IC.With patience and a decent oscilloscope you can probably work out the function of each pin on the chip but that may be as far as you can go. TOYO used to be a producer of such chips.RF Solutions specialise in remote control and may be of interest to you.http://www.rfsolutions.co.uk/They sell chips for such applications as well. Note thre custom numbering scheme is used here as well.http://www.rfsolutions.co.uk/acatalog/Encoder_Decoder___Encryption_IC_s.html

author: fluxcapacitor
author_rank: Frequent Contributor
timestamp: January 31, 2014, 05:00:08 pm
content: I think those chips are made by realtek .Do a google search for RX-2 chiphttp://letsmakerobots.com/node/31757

author: Fraser
author_rank: Super Contributor
timestamp: January 31, 2014, 05:24:30 pm
content: Good find 'fluxcapacitor' !Herer is the page with TX2 & RX2 pinout.http://letsmakerobots.com/node/31757From the same page 'nintwala' provides a datasheet link.I attach it here in case it ever disappears.

author: MyElectronsFellOut
author_rank: Regular Contributor
timestamp: February 01, 2014, 11:03:44 am
content: Wow,Thanks for the find! That's saved a lot of oscilloscope work.
Identifying a component - Page 1
Forum section: electronics / projects

author: suicidaleggroll
author_rank: Super Contributor
timestamp: December 29, 2016, 06:43:21 pm
content: I was sent a a small reel (500 units) of components from a supplier that turned out to be wrong. The part I ordered only comes in a SOT-363, and these were SOT-666, and on top of that the wrong pins were shorted to each other. I contacted the supplier and they fixed the problem, but told me to keep the parts they had sent originally. The only problem is they don't know what they are.All I know is they're SOT-666, the only marking on the package is "G3", and what I've been able to determine with a DMM is that:pins 3 and 4 are shorted togetherpins 1, 2, 5, 6 are shorted togetherThere is a diode with a 0.14V drop (according to the DMM) with the anode at 3,4 and the cathode at 1,2,5,6My first and simplest thought is that it's a SOT-666 diode, so I went looking on digikey and sure enough I ran across this:http://www.nxp.com/documents/data_sheet/PMEG2005AEV_3005_4005.pdfA SOT-666 schottky diode with the anode on 3,4 and cathode on 1,2,5,6, and the part number PMEG4005AEV supposedly has a marking code of "G3".Is there any reason I shouldn't assume that's the correct part number for these components? Any other tests I can do?

author: BrianHG
author_rank: Super Contributor
timestamp: December 30, 2016, 02:03:30 am
content: So far, it sounds right.Raise the temp of the diode to 85 degrees while measuring it, see if the voltage drop goes down to 0.05v.Wow, with these diodes kept at around 100 degrees with a 0.1ma load wired in a full wave bridge rectifier, you would have a 0v drop ac-dc converter....

author: SeanB
author_rank: Super Contributor
timestamp: December 30, 2016, 08:00:22 pm
content: Well, you now have a good supply of low cost 40v diodes, for general purpose use. Perfect for input protection on power rails on USB devices.
Identifying a fast moving object using RFID (or similar tech) - Page 1
Forum section: electronics / projects

author: bogdan2014
author_rank: Regular Contributor
timestamp: February 13, 2024, 11:54:52 am
content: I have the opportunity to work with a TagMaster system, which is an RFID tag attached to a fast moving object (like a car) and an antenna placed at a distance (few meters), and it allows for identification via network (each tag has an unique ID). I was wondering if there's a way to DIY this at a reasonable cost. The key here is the distance and speed at which the tag passes near the antenna.
Identifying a high voltage coaxial connector - Page 1
Forum section: electronics / projects

author: mad_mav
author_rank: Newbie
timestamp: August 02, 2017, 01:55:15 pm
content: Hi,I need help identifying the connector type for a piezo actuated mirror. The cable is a coax, it is supposed to be good for at least 2kV. The inner part has a dark green isolator, the thread is 4.7mm. There is unfortunately no documentation I could find for the part =(See attachment for a photo.Any ideas?

author: firehopper
author_rank: Frequent Contributor
timestamp: August 02, 2017, 05:07:53 pm
content: some sort of TNC type thing?

author: woodchips
author_rank: Frequent Contributor
timestamp: August 02, 2017, 07:37:53 pm
content: At 4.7mm that is near SMA size.

author: sdouble
author_rank: Frequent Contributor
timestamp: August 02, 2017, 07:46:42 pm
content: looks like a microdot connector

author: Neomys Sapiens
author_rank: Super Contributor
timestamp: August 02, 2017, 08:31:56 pm
content: Probably a 5-44 (sometimes called sub-microdot or nanodot), commonly used with microactuators and accelerometers. Name derives from thread being a #5-44UNF. The sick company TE calls them 'LEPRA/CON' and denotes the thread as '.125"-44' so that the series is not obvious to the customer.http://www.marchelectronics.com/pdf/te-connectivity-microdot-catalog.pdfhttp://www.cdint.com/catalog/category/Cables/5-44https://www.johnmorrisgroup.com/AU/Industrial/Product/7494/5-44-coaxial-plug-(standard)if not, maybe SMC, but not SMA

author: mad_mav
author_rank: Newbie
timestamp: August 03, 2017, 11:18:48 am
content: @Neomys SapiensThose look very similar indeed! Thank you!!
Identifying a SOT23-6 component marked K21 - Page 1
Forum section: electronics / projects

author: Svuppe
author_rank: Regular Contributor
timestamp: October 07, 2017, 04:33:37 pm
content: Hi all.I need a little help identifying a component in a SOT23-6 package, that is marked K21 on top.From what I can measure (in circuit) my guess is that it is a dual N-channel mosfet, or perhaps a dual NPN transistor with built-in base resistors.Pins 2 and 5 are connected to ground. Pins 1 and 3 are separate 5V logic level inputs. Pins 4 and 6 are driven low when the inputs are high (pin 6 is controlled by pin 1, and 4 by 3).I am looking for the datasheet of whatever this thing is, so I can re-use parts of the circuit they are used in.
Identifying an IC - Page 1
Forum section: electronics / projects

author: resistor
author_rank: Regular Contributor
timestamp: January 24, 2014, 07:48:31 am
content: I'm salvaging a bunch of DIP-package parts from an old oscilloscope, and I came across one I can't identify. It looks to be a National Semiconductor part with a model number of MS8930, with a sub-number of 100166DC. Google hasn't been able to turn up any info on it, though mine looks very similar to the one shownhere. It's in a ceramic rather than plastic package.So, any suggestions on what it could be?

author: w2aew
author_rank: Super Contributor
timestamp: January 24, 2014, 03:15:14 pm
content: The part is likely a 100K series ECL device. Most likely an ECL 9-Bit Magnitude Comparator. The MS8930 is likely the date code. There were several families of ECL logic devices in the 80's and 90's. The 100K series stuff was some of the fasted available at the time, and pretty power hungry.The 100166 likely will functionally cross to the modern part 100E166. Datasheet here:http://www.onsemi.com/pub_link/Collateral/MC10E166-D.PDFI'd have to dig to see if I have my old 10K/100K ECL databooks in storage somewhere in order to find the pinout of the DIP package you have.

author: resistor
author_rank: Regular Contributor
timestamp: January 24, 2014, 05:18:39 pm
content: Huh. Why would a digital logic part like this be in a ceramic package? I thought that was mostly used for analog components?

author: c4757p
author_rank: Super Contributor
timestamp: January 24, 2014, 05:22:23 pm
content: I'm just guessing here, but perhaps because of temperature. The plastic packages weren't as good then, and ECL chips runhot.

author: w2aew
author_rank: Super Contributor
timestamp: January 24, 2014, 08:28:36 pm
content: Quote from: c4757p on January 24, 2014, 05:22:23 pmYes - the 100K ECL series chips were very power hungry. I remember building up a custom high-speed pattern generator and error detector in the late 80's with them. All differential, 50ohm signaling, etc.

author: amyk
author_rank: Super Contributor
timestamp: January 25, 2014, 10:40:10 am
content: This one:http://pdf1.alldatasheet.com/datasheet-pdf/view/127015/NSC/F100166.htmlQuiescent current is around 170mA - or roughly 0.8W(!) with a -4.8V supply.3.9ns propagation delay, 1.5ns transition time at 85C - this is seriouslyfastlogic.