hybridfree/eevblog-posts huggingface dataset:
Issue with Spartan 12D Wavesoldering Machine – Missing Information on LCD Displ - Page 1
Forum section: electronics / general

author: g1638
author_rank: Newbie
timestamp: November 09, 2024, 07:33:07 pm
content: Hi everyone,I’m facing a problem with our Spartan 12D wave soldering machine, and I’m hoping someone might have some insights or suggestions on how to resolve it.Here’s the situation:Background:We received a new main controller card and wave height motor card. To check the cards, we first changed the main controller card in the machine. After installing the new card, the machine threw an error, so we reverted back to the original main controller card.Next, we changed the wave height motor card , but after doing this, the machine still wouldn’t run properly. We then put the original motor card back in, but that’s when we started seeing new issues with the LCD display.Current Issue:The LCD display is no longer showing the information for Pre Heater 2 and Wave Height 1.When navigating through the settings, the cursor skips over the parameters for these two items, jumping directly from the parameter before to the one after them.Additionally, when trying to edit the parameters for Pre Heater 2 and Wave Height 1, the cursor doesn’t stop, making it impossible to adjust these settings.Troubleshooting Steps Taken:Reverted to the original main controller card after the first error.Reinstalled the original wave height motor card after the machine failed to run with the replacement card.Checked the cables and connections for any obvious issues.Tried restarting the machine and performing a reset, but the problem persists.I’m not sure if this issue is related to a specific hardware fault or perhaps a software glitch in the controller settings. Has anyone encountered a similar issue or have any advice on what could be causing this behavior?Any help or suggestions would be greatly appreciated!Thanks in advance,

author: mon2
author_rank: Frequent Contributor
timestamp: November 10, 2024, 07:06:06 pm
content: If not done already, post this request also on the SMTNET user forum. Lots of good techs on that website that may be able to help. Have you reached out to the manufacturer of the machine? Often the factory will be able to provide the best support since they built the product.
Experience with reflow oven JEM-210/310/410 / SM500 / Bokar X-Reflow306 - Page 1
Forum section: electronics / general

author: alexw
author_rank: Newbie
timestamp: November 27, 2024, 09:06:25 am
content: HiDoes anyone have experience with one of these reflow ovens?- JEM-210/310/410- JEM SM500- Bokar X-Reflow306The JEM ovens were sold in Europe under the Reddish brand.For pictures / background information:http://www.batchoven.info/We want to solder assemblies with mixed components, i.e. uC and power semiconductors + larger inductors, in small-scale series production.We are hoping for good reproducibility and short cycle times.Best regardsAlex
UK oven suitable for conversion with Controleo3 controller... - Page 1
Forum section: electronics / general

author: nickds1
author_rank: Contributor
timestamp: November 12, 2024, 04:26:17 pm
content: HiI've had a Controleo3 kit sitting around for a while, and now I'm back in the UK I'm looking for a suitable toaster oven to convert.I have asked this question before, but regrettably got nowhere... here's hoping for better luck this time!The rules are pretty straightforward and laid out here:https://whizoo.com/pages/buildguide, however......every oven I look at seems not to be suitable...Has anyone in the UK (or another 230VAC country, preferably in Europe) found an oven suitable for the Controleo3? I want to use this controller as it's well regarded and I already have the kit!Around 10ltrsAround 1150WShielded QUARTZ IR elementsTop & bottom elements independently controllable (*)(*) Some ovens have 120V elements in series, which isn't helpful - 230/240V elements are needed...Any constructive suggestions or UK experiences very welcome...
Looking for Reputable Third Party Brokers to Source Obsolete Components - Page 1
Forum section: electronics / general

author: tarun172
author_rank: Regular Contributor
timestamp: October 28, 2024, 06:57:28 pm
content: Hi team,I'm looking for a list of vetted brokers who can assist with sourcing obsolete components. I came across this link:https://eevblog.com/wiki/index.php?title=Component_Distributors, but so far, distributors have been unable to help.Could anyone please provide further assistance?Thank you!tarun172

author: thm_w
author_rank: Super Contributor
timestamp: October 28, 2024, 08:29:28 pm
content: What components specifically?Do they have to be guaranteed new or are you willing to use salvaged parts?

author: mon2
author_rank: Frequent Contributor
timestamp: October 29, 2024, 12:43:59 am
content: Sharing a solid broker of parts out of China. Contact Mica Hu. We have sourced assorted semiconductors for a few years now at fair prices for 100% new and original EOL devices.Contact details:Mica HuRight Star Industrial Ltd.Xilinx||Broadcom||Altera||Intel||ST||TI||NXP||Freescale||Microchip||AD||LT||Maxim||RenesasT. 86-27-8710-6215 | M. 86-158-2724-0317 | Skype: live:rsisales_1 | New email: sales@rsi-ic.comWeb:http://www.rightstarelec.comAddr: Room E-2799, Future City Building, Wuchang District, Wuhan City, Hubei Province, China

author: Kean
author_rank: Unknown
timestamp: October 29, 2024, 02:41:08 am
content: I've had some past success with Rochester Electronics for EOL parts - I'm surprised they aren't on that list.https://www.rocelec.com/

author: ZenHombre
author_rank: Newbie
timestamp: October 29, 2024, 05:24:18 pm
content: I second Kean's suggestion. Always had good turn out with Rochester.

author: tarun172
author_rank: Regular Contributor
timestamp: October 29, 2024, 06:05:05 pm
content: Obsolete components from onsemi, TI and analog devices. Includes MOSFET, Transistors and IC.

author: thm_w
author_rank: Super Contributor
timestamp: October 29, 2024, 09:52:29 pm
content: Quote from: tarun172 on October 29, 2024, 06:05:05 pmMeans nothing without a part number.Most FETs and transistors will have modern alternatives that can be used.

author: ANTALIFE
author_rank: Frequent Contributor
timestamp: October 31, 2024, 10:41:24 pm
content: Sounds like netCOMPONENTS is what you are after. Have used them a few times for EOL & difficult to find parts before without issues.https://www.netcomponents.com/

author: Smokey
author_rank: Super Contributor
timestamp: November 01, 2024, 01:56:44 am
content: At some point obsolete parts sourcing becomes so painful that you just do a redesign with parts you can actually get. Good idea to decide what that tipping point is early so it doesn't sneak up on you.
EXMORE VS500 vapor phase soldering - Page 1
Forum section: electronics / general

author: tititoto
author_rank: Newbie
timestamp: October 31, 2024, 03:36:06 pm
content: Hi,I got the opportunity to buy this oven, does someone gotexperience using it?Any info will be much appreciate.https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.fixtrade.info%2Fa-65670612%2Fused-machines%2Fexmore-vapor-phase-vs-500%2F&psig=AOvVaw0xlRHIjUpkcJ5KsXrhbaQe&ust=1730475302658000&source=images&cd=vfe&opi=89978449&ved=0CBQQjRxqFwoTCJDTqJb5uIkDFQAAAAAdAAAAABAESincerely.
Domestic PCB process tracks closer than 10 mil in Rogers substrates - Page 1
Forum section: electronics / general

author: alan.bain
author_rank: Regular Contributor
timestamp: October 27, 2024, 11:45:15 pm
content: My "domestic" PCB process cannot cope with parallel track spacings of less than 10 thou. It is mainly intended for Rogers PTFE substrates as for FR4 JLCPCB or equivalent is easier (and makes nicer looking boards). I'd like to improve it. The back is always a groundplane.Process iso) Drill vias 0.4mm by hand on high speed machine using the drill location ploto) Conductive ink in viaso) acid copper plate for 20mino) Two laser printed negative mirror layers on 80gsm tracing paper lined up on light box (visible) and taped togethero) Dry film photoresist laminated onto board at 120Co) UV exposure in the usual "Mega" box. Step wedge shows an exposure of 60s-90s for ideal density, but I find that the black of even two laser printed layers means this is too long and close tracks fuse. For fine detail maybe 15s plus a second exposure after development.o) Sodium carbonate developer until uncovered copper clearo) Second UV exposure (if development right, there will be no blue on the copper)o) Ferric chloride etch in usual heated bubble tank (Mega) at around 45Co) KOH stripI suspect the limiting factor is the lack of a proper photoplot or rather the poor density blacks. But in thinking of fixing this it seems that it might be easier to plot directly on the film before lamination to the board. I sort of want a "UV laser printer". I'm sure I'm not the first one to want one of these....Alan
Instruction manual for Asscon VP3000 - Page 1
Forum section: electronics / general

author: jayx
author_rank: Regular Contributor
timestamp: October 15, 2024, 08:57:25 pm
content: Hi guys,I'm looking for instruction manual for Asscon VP3000. Can't see anything on Asscon website or anywhere else. Can anyone share it please?

author: law
author_rank: Regular Contributor
timestamp: October 17, 2024, 02:29:17 am
content: Hey, you can try contacting Asscon themselves. They sent me the manual for a different model machine.Edit - I contacted them via email. They were pretty helpful
PCBWay (and others) assembly part pricing - Page 1
Forum section: electronics / general

author: davorin
author_rank: Unknown
timestamp: October 21, 2024, 09:49:29 am
content: Good morningAs a new more KiCAD project comes up I thought I might give those prototype assembly a go.For example I can just export a PCB design directly to PCBWay where I can choose various options.Now when I choose the assembly service and that PCBWay should source the parts, are those part prices already included in the calculation shown?Or do you get charged after ordering for the parts separately?

author: tszaboo
author_rank: Super Contributor
timestamp: October 21, 2024, 10:02:17 am
content: It's on their website:https://www.pcbway.com/helpcenter/pcb_assembly_ordering/Assembly_cost_will_be_showed_after_submit_order_is_components_cost_included_.htmlBasically if they didn't review a BOM, your price is never final, as part prices are wildly varying. Just assume it isn't.
Switch pcb turn unit direction. - Page 1
Forum section: electronics / general

author: loki42
author_rank: Frequent Contributor
timestamp: October 12, 2024, 10:43:19 am
content: I've got a autoveyor turn unit (corner) that turns anticlockwise and I'd like it to turn clockwise. Does anyone have a manual for any turn unit so I can see what the normal way to switch it is? Autoveyor doesn't seem to exist any more so just looking for any manual or ideas.

author: Mangozac
author_rank: Frequent Contributor
timestamp: October 13, 2024, 10:21:31 pm
content: We have a Nutek turn unit that we switched direction. These ones aren't designed to have the direction switched - the direction is determined by the software they are programmed with at the factory.We downloaded the Panasonic software, downloaded the program from the PLC, worked out what each of the signals were, switched them around in the ladder logic and then re-uploaded.

author: loki42
author_rank: Frequent Contributor
timestamp: October 15, 2024, 11:18:55 am
content: I thought that might be the case, super useful to know that changing it is possible. I'll look into what PLC it's got and what gear I need to program it.
Does anyone have a source for a crimper for 9.5mm automotive terminals - Page 1
Forum section: electronics / general

author: TheGorf
author_rank: Newbie
timestamp: October 11, 2024, 05:36:54 am
content: These are kind of like a Faston but not quite. I'm not 100% sure what to call them. But, I'm looking for a crimping tool that will do these ends in one go. So conductor and insulator crimp. I have to make several of these and I don't really want to do each one with a set of plyers and a six-pack of beer. For reference these are meant to accept like an 8 or 10 gauge cable. So these are not easily bent up in any way.

author: tooki
author_rank: Super Contributor
timestamp: October 11, 2024, 12:20:20 pm
content: It’d be really helpful if you could try and find out what the connector is called. I assume these contacts go inside a housing of some sort? Can you check all sides of both contact and housing to look for any markings?FWIW, thereare9.5mm (0.375”) Faston terminals. But they aren’t with the fancy retention style shown.(Squeezing a terminal on with pliers isn’t crimping, it’s just… squishing it on with pliers. Not something I would do at all, never mind for a terminal intended for use with 8AWG wire, which presumably expects to see some current. An improper crimp has higher contact resistance, so could overheat, and reduced reliability. A proper crimp is gastight and requires carefully controlled pressure and dimensions to execute. Using ordinary pliers does not come close.)With that said, those look like fairly mundane F-style crimps, so they’re likely not too fussy. If you look for a decent quality tool with dies that have crimp dimensions close to the ones in the attached PDF (which is for TE’s Faston series) for 0.375” and the wire used, you’ll probably be okay.After writing the above, a google search for “9.5mm tab automotive connector” found some similar looking ones on AliExpress, and searching there for “9.5mm automotive connector” found a listing that mentions KET (Korea Electric Terminal), and what you have sure looks like this:http://www.ket.com/en/product/detail-information.ket?searchKey=&partNumber=ST730722-3Going by its datasheet (also attached) it’s just a smidgen smaller than the TE Faston, so the Faston crimp specs should be close.

author: squadchannel
author_rank: Frequent Contributor
timestamp: October 11, 2024, 12:42:01 pm
content: I had seen it.Yazaki 7116-5073-02https://connector.yazaki-group.com/cgi-bin/detail.cgi?part_id=7116-5073-02

author: mon2
author_rank: Frequent Contributor
timestamp: October 12, 2024, 05:23:01 am
content: Hi. I am in HK attending the electronic fairs and asked about your request. The manufacturer will also comment later but she has a 10mm crimp tool.

author: mon2
author_rank: Frequent Contributor
timestamp: October 12, 2024, 05:24:47 am
content: More…sample price is about $4 usd.
Free PCBa gear (AOI, SPI, board handling) in Australia - Page 1
Forum section: electronics / general

author: loki42
author_rank: Frequent Contributor
timestamp: October 01, 2024, 12:22:06 pm
content: I've got a possibly functional vi tech AOI and a currently not functional but with new software etc that i paid a bunch of cash for koh young spi. KY8030. They are in Melbourne. Spi has an issue with one servo. I've got be units on the way so these are free to a good home. I am also open to any test gear you want to swap for them, especially audio related.

author: loki42
author_rank: Frequent Contributor
timestamp: October 02, 2024, 01:54:21 am
content: AOI is a Vi Tech VI 3200. Comes with calibration kit, software and some parts.

author: loki42
author_rank: Frequent Contributor
timestamp: October 03, 2024, 06:20:45 am
content: All gone.
Post reflow tall electrolytic capacitor affixing (glue) - Page 1
Forum section: electronics / general

author: glenenglish
author_rank: Frequent Contributor
timestamp: September 28, 2024, 11:37:42 pm
content: What are people using for glueing support for tall SMT electros ( panasonic A780EN476M1HLAS050)I've got a whole load of 6.3mm dia, 10mm tall electrocs they seem quite wobbly and I'me concerned they wont like some vibration modes.The leads are a bit more proud of the base then what I am used to .I see many people use some soft white silicon goop, but these merely dampen the motion, not fix them . maybe its enoughToo rigid a fix (ie epoxy) and it will tear the mask off the PCB, maybe , and no give with physical thermal change excursions I dunno. depends how its done.glen

author: helius
author_rank: Super Contributor
timestamp: September 29, 2024, 01:31:15 am
content: Silastic a.k.a. DowSil 744 or 738.

author: Jackster
author_rank: Frequent Contributor
timestamp: September 29, 2024, 03:07:39 am
content: This stuff works great for hobby level projects and is in 50ml tubes so less waste if you let it dry out.https://www.aliexpress.com/item/1005001845373231.html+1 for DowSil RTVs though. We use them for production work and on my 2 stroke

author: glenenglish
author_rank: Frequent Contributor
timestamp: September 29, 2024, 09:30:55 am
content: What's specific about 744, or 738 that you like (compared to the many other chemically compatible ) ?It may end up being be a soft compound potting job.
2024 New Arrival SMT Pick and Place Machine NeoDen N10P - Page 1
Forum section: electronics / general

author: Tonny-NeoDen
author_rank: Contributor
timestamp: October 16, 2024, 07:40:07 am
content: Hi All,Glad to inform you our company released a new advance pick and place machine model-NeoDen N10P,if want to know more details,feel free contact to me(tonny-neoden;wechat/whatsapp:86-13588787940),tks.Features:1.Support PCB within size (L)1500mm*(W)450mm2.Automatic nozzle change function has been added to the system. 39 nozzle positions increase the speed and flexibility of integrated placement.3.IC camera improves the size of IC photos and realizes automatic calibration with automatic nozzle change.4.Automatic calibration of nozzle height5.80 tape feeders to increase the number of simultaneous feeding capacity6.Measuring of nozzle air pressure to improve work stability and eliminate obstacles7.Backup pins to support soft PCB
Connector crimp pins - Page 1
Forum section: electronics / general

author: gaminn
author_rank: Frequent Contributor
timestamp: September 10, 2024, 09:58:24 am
content: Hi,any idea where to get this housing and male crimp pins? The crimp pin is approx 20mm (0.8") long (total length) and I need to replace them because they corroded and the housing cracked. The pitch is 2.54mm (0.1"). I would like to replace them with exactly same model. I searched Mouser with no luck. ThanksMartin

author: Kean
author_rank: Unknown
timestamp: September 10, 2024, 01:49:32 pm
content: What is the pitch?It looks a bit like a Molex KK 254 series housing, but I've never seen male crimp pins for them.

author: gaminn
author_rank: Frequent Contributor
timestamp: September 10, 2024, 03:18:29 pm
content: Oh, sorry, the pitch is 2.54mm (0.1"). FYI, this is mating connector (on the PCB). TBH I would replace it too, it has corroded also.

author: Kean
author_rank: Unknown
timestamp: September 10, 2024, 03:58:12 pm
content: I don't recognise the mating connector, but there are so many unique connectors especially in 0.1" pitch which has been around for decades.Not sure of your intentions, but can you just replace it with another 2.54mm pitch connector like from the Molex KK series?If you cannot find male pins, then something I often do is use header pin strip with extra long pins, and use that as a gender changer.
Hakko FR-410 / FR-400 Desoldering Station - anyone using? - Page 1
Forum section: electronics / general

author: zaibatsu
author_rank: Newbie
timestamp: May 24, 2024, 04:27:57 am
content: Just wondering if anyone has experience with Hakko's current high-end (through hole) desoldering tools FR-410 and FR-400?They seem to address issues of past versions with a much shorter tip with dual heater and significantly higher power, which presumably translates to better thermal stability / less chance of clogging / ability to use lower temperatures for sensitive boards. However I'd like to hear some long-term user experience. Leaning towards the FR-410 as it offers a lower minimum temp.Currently using an ancient Hakko 700B station with Hakko 800 gun, restored with newer generation element/tip and re-calibrated, but it's finally getting hard to find parts (valve-plate / diaphragm).I am working on vintage gear (fragile traces) worth significantly more than the tool price so don't mind investing, I did also consider Weller (WXD2 / WXDP120) which has great reviews for performance/functionality but poorer reviews for long term durability (DOAs / short term failure / firmware update bricking etc). Not sure if the situation has changed now. I like the long term user-serviceability and internal parts availability with Hakko, am hoping the functionality on their newer design is competitive with Weller.Open to being swayed, appreciate any thoughts.

author: docsalr
author_rank: Contributor
timestamp: September 25, 2024, 04:20:42 am
content: FR-410 is an excellent desoldering unit. I have both, the gun style and the pencil style. Also have the FR-808. All great tools to have.
Carbon Dust from Weller Zero Smog EL - Page 1
Forum section: electronics / general

author: EEeng
author_rank: Newbie
timestamp: August 31, 2024, 01:14:40 am
content: Hi,We purchased two of the weller zero smog EL fume extractors after Dave pointed them out in the fire sale.We noticed some carbon dust after first unboxing and cleaned it up before starting it. But have noticed more dust on surfaces around the unit and again more under the filter.Is everyone else experiencing the same?ThanksEEeng.
CAN-FD signals on long FPC - Page 1
Forum section: electronics / general

author: Kneidl
author_rank: Contributor
timestamp: August 26, 2024, 08:50:41 am
content: Hi,for a new project I plan to use custom designes 2-Layer FPC cables to interconnect my 20 PCBs with each other.Due to mechanical reasons they need to be connected as a long string of a total length of about 8m.I attached a picture which shows the full setup.My question now is regarding the CAN-FD bus: As FPC have a standard core-thickness of ~25µm it is not clear to me how the desired 120R for CAN should be handled.According to the various impedance matching tools, I would need unpractically thin traces, which then cannot carry the required current for the dominant state.Is there a good solution, which satisfies my desired BUS-speed of 5 MBit/s ?

author: thm_w
author_rank: Super Contributor
timestamp: August 27, 2024, 07:59:07 pm
content: Where are you getting 25um from?JLC does 0.1 and 0.2mm, those should be easier. Or could ask for even thicker.

author: Kneidl
author_rank: Contributor
timestamp: August 28, 2024, 01:28:16 pm
content: In case of a microstrip-design it is relevant to know the distance between the layers. JLC does 0.1mm and 0.2mm, but that is regardng the overall thickness of the FPC. The inner core is, in case of JLC, always 25µm.Now my idea is to go with a single layer FPC and route the CAN signals from A to B and surround the 2 CAN signals with a GND layer. That should then be some sort of wave-guide, just without the bottom layer,which brings me way closer to my desired impedance. All traces are ~0.5mm thick.I created the attached LTSpice simulation and I hope someone can provide me some feedback/insights for improvement.

author: thm_w
author_rank: Super Contributor
timestamp: August 28, 2024, 08:47:14 pm
content: Yeah you are right, 25um in all stackups:https://jlcpcb.com/capabilities/flex-pcb-capabilitiesYou can try this site for coplanar differential:https://impedance.app.protoexpress.comIt looks like for a 0.5mm trace you'd have 0.12mm trace separation, if I entered that correctly:25um height, 3.3 ER1, 18um copper thickness
SMD Solder Paste Reflowing Issue - Page 1
Forum section: electronics / general

author: rts808
author_rank: Newbie
timestamp: August 26, 2024, 07:32:46 pm
content: I switched to a SAC305 T6 (Chipquik SMD291SNLT6) solder paste from a T4 (GC10 equivalent, Chipquik TS991SNL35T4) solder paste. I know I had a good layer of solder paste on the board with the T6 paste, but some of the pads reflowed weird. I'm reflowing using an Atten ST-862D to reflow. Both boards had paste applied by hand lining up the stencil myself. I did the math and the T6 should have worked better for my fine pitch VQFN 0.25mm pads but some such as C48 and C26 and parts of U1 (perpendicularly between U2 and U10) didn't "reflow" and sort of just dispersed like how water causes a sand castle to flatten out over time. The time between applying the paste and reflowing was minimal (~10-20 minutes) so I don't think environmental factors would have played a part.Has anyone seen this before or know what I need to change to get it to reflow properly?

author: rts808
author_rank: Newbie
timestamp: August 26, 2024, 10:32:49 pm
content: Here's a comparison of the two

author: wraper
author_rank: Unknown
timestamp: August 26, 2024, 10:42:09 pm
content: I suspect that paste had flown around with very little flux before it could solidify in place. Probably due to very fine particles suspended in liquid flux and airflow blowing them around. You could try larger nozzle, lower airflow and blowing air from larger distance.

author: rts808
author_rank: Newbie
timestamp: August 27, 2024, 12:19:04 pm
content: I'll try that. Thanks.

author: SMTech
author_rank: Frequent Contributor
timestamp: August 27, 2024, 01:16:57 pm
content: I don't follow your T6 reasoning. I presume 0.25mm is the width of a pad on your VQFN, this makes T4 more than adequate with 6 or more particles across the aperture (the std suggested is 5). If we were talking round apertures for a micro BGA, then you could argue for T5 because with a round aperture you can only maybe fit in a single row of 5/6 particles so your coverage might be low, the suggestion in that case is to target 8 particles across the aperture. T5 in your case is overkill and T6 simply madness.

author: rts808
author_rank: Newbie
timestamp: August 28, 2024, 02:09:44 am
content: Crap. You're right. I had an error in my spreadsheet. That explains why it has been so hard to find T5 and finer.Also, I tried your suggestion and it looks better. I'll stick with my T4 then. Thanks for the suggestion.

author: forrestc
author_rank: Unknown
timestamp: August 28, 2024, 02:23:05 am
content: You appear to have had way too thick of paste deposit.Bridges are almost always related to too much solder being deposited. Once you get above a certain amount, the solder has no where to go so it bridges.
How to align component during assembly - Page 1
Forum section: electronics / general

author: pastaclub
author_rank: Regular Contributor
timestamp: July 31, 2024, 02:39:00 pm
content: How can I make it easy to properly align a component with the front panel in volume production?I have a flex PCB with a ToF sensor chip and two capacitors. The shape of the flex PCB can be changed if needed. The sensor is 4.4 x 2.4 mm and has two tiny holes on top that need to be aligned with two transparent windows (1.3 mm diameter circles) in an otherwise black glass which also covers a nearby LCD.My front panel sandwich consists of 3 layers of materials glued on top of each other:- aluminum plate- printed acrylic- cover glassThere is a cutout in the acrylic with the same shape as the flex PCB, so the flex PCB sits between the aluminum plate and the glass. The glass comes already laminated to an LCD which is installed in another cutout.In an ideal world with zero tolerances, the circular windows in the glass would be perfectly centered over the holes in the sensor... but I need to allow for some tolerance, and I don't have that much room to work with since the circular windows are only 1.3mm in diameter and need to fully cover the holes, so it better should be accurate to +/- 0.3 mm. I wonder if I should just rely on making the cutouts as tight as possible (within manufacturing tolerances) and rely on everything fitting, or if I should leave a bit of room for manual alignment.Photo of the flex PCB with sensor is attached. Sorry for bad photo quality.

author: thm_w
author_rank: Super Contributor
timestamp: July 31, 2024, 10:24:26 pm
content: - Can the acrylic cutout be made to center the sensor itself and then have a larger tolerance for the flex PCB? You'd have to quote from the machinist what spec they can do, but <0.3mm should not be much issue.- Can the 1.3mm circular glass windows be made larger? I guess not since its premade- Can you ask assembler what they would be able to do in terms of component tolerance or advice? Maybe 0.1mm or so? Usually the solder itself will center the part fairly well.You could also test how far out of alignment it can be before performance is affected.

author: Doctorandus_P
author_rank: Super Contributor
timestamp: August 21, 2024, 01:01:20 pm
content: This looks like a very bad design. Why are those glass windows so small? this makes alignment much more difficult then if they were a few mm in diameter.If you really want such small windows, then you need some injection molded frame which holds both the glass windows and sensor itself.
Plastic label manufacturers - Page 1
Forum section: electronics / general

author: tszaboo
author_rank: Super Contributor
timestamp: August 12, 2024, 12:13:15 pm
content: I was wondering if anyone knows a label printing company in China.I would like to have similar workflow as in PCB ordering. Online quotes, payments and generally hassle free ordering, where I don't have to have back and forth emails with someone for days. Example of some random labels below (not my design)Do you have a suggestion?

author: radar_macgyver
author_rank: Frequent Contributor
timestamp: August 12, 2024, 12:19:39 pm
content: JR Panel has online ordering, instant quotes and reasonably fast turn around. I've only used them once, but the experience was pretty good. They can also integrate membrane switches.https://www.jrpanel.com/

author: ftg
author_rank: Frequent Contributor
timestamp: August 12, 2024, 01:29:48 pm
content: LCSC now has a front panel servicehttps://www.lcsc.com/front-panelI have not tried it, but I would not be surprised if there were some sponsored youtube videos showing it and talking about the process.

author: tszaboo
author_rank: Super Contributor
timestamp: August 14, 2024, 08:04:12 am
content: Quote from: radar_macgyver on August 12, 2024, 12:19:39 pmBy the looks of it they are working with ~100 EUR setup costs, which is a bit steep for my liking.Quote from: ftg on August 12, 2024, 01:29:48 pmGood idea. It's not as automated as I was hoping, but I'll give it a try.

author: pastaclub
author_rank: Regular Contributor
timestamp: August 18, 2024, 02:36:52 am
content: Can you also recommend a service like that for cutting aluminum front panels? (I used JLCPCB for that before but now I need 2.5mm thick plates which is more than they do)

author: Smokey
author_rank: Super Contributor
timestamp: August 18, 2024, 02:44:26 am
content: Quote from: tszaboo on August 12, 2024, 12:13:15 pmI know this is off topic, but I haven't done a real production PCB order (ie not 5 pieces of prototype spec) from any of the Chinese manufacturers without at least 3 or 4 days of one email a night back and forth before everything is sorted out.... Just saying...
Hitachi / Renesas H8/300 date code question - Page 1
Forum section: electronics / general

author: peter-h
author_rank: Super Contributor
timestamp: November 08, 2022, 03:04:43 pm
content: Would anyone know what date code is OL1?There is nothing else on the actual chips either.I believe it is around 2010, plus or minus a few years. That was when I bought them. The packaging changed around 2013 to show the more conventional format e.g. 1422 being 22nd week of 2014.I have a lot of these; some OM1 etc.Thank you in advance.

author: oPossum
author_rank: Super Contributor
timestamp: August 11, 2024, 07:07:10 pm
content: https://telcontar.net/KBK/tech/IC_dates#Hitachi

author: peter-h
author_rank: Super Contributor
timestamp: August 13, 2024, 07:00:58 am
content: Thanks for finding that.So OL1 is 1st week of November 2000.The funny thing is I have a lot of chips (bought from US used stock dealers about 15 years ago) which are OL1 and OM1 so they are all very close to each other.These are all good stock, After that, I started getting counterfeits as the chinese discovered "movement" on this P/N. Fortunately they were dumb enough to mark it with a nonexistent P/NThe seller was very upset and insisted on payment but luckily we had an account so sent them back, and I never bought any more other than new stock from Hitachi distis. The LTB was about 10 years ago and that product is still selling but I have tons of CPU stock.
10000CPH real mounting speed Tronstol A58 4 heads PNP machine with flying camera - Page 1
Forum section: electronics / general

author: Jemma.zhang
author_rank: Contributor
timestamp: August 27, 2024, 03:04:12 am
content: Real flying camera, picking materials and shooting at the same time：https://youtu.be/lBpdrYk-K7oI couldn't imagine that the 4-heads PNP machine could have both speed and precision.10000CPHreal mounting speed Tronstol A58 4 heads PNP machine with 58mm*8mmNeoden 4- 4 heads: Real mounting speed3000CPHNeoden S1/Tronstol A1-4 heads:Real mounting speed3500CPHNeoden 9-6 heads:Real mounting speed7500CPHNeoden K1830-8 heads:Real mounting speed10000 CPH for LEDThe speed of TronStol A58 4 heads is similar as the 8 heads PNP machine.Continuous technological innovation to surpass our past selves.Cost-effective models to meet your needs for price, speed and accuracy

author: jmelson
author_rank: Super Contributor
timestamp: August 28, 2024, 03:03:46 pm
content: Very impressive! I don't see where the cameras are located on this machine. How do they work? Looking down from above the component? Sight across the component, like my Quad machine with QuadAlign cameras? Just curious.Thanks,Jon

author: Jemma.zhang
author_rank: Contributor
timestamp: August 29, 2024, 09:35:10 am
content: This video is showing you where is the camera:https://youtu.be/M-BKYktPNh8It install on the mounting head,you can check the picture

author: jmelson
author_rank: Super Contributor
timestamp: August 29, 2024, 05:13:47 pm
content: Fascinating! Thanks for the info. It seems a bit like my QuadAlign cameras, but quite a bit more compact. 20+ years of progress!Jon
JLCPCB - pcb + assembly - optimal shipping for EU - Page 1
Forum section: electronics / general

author: lovro
author_rank: Contributor
timestamp: August 06, 2024, 06:19:43 pm
content: I am located in Croatia, which is in EU.I am currently making an order for a couple of pcbs with parts and assembly.I can wait, that is not a problem, and I am ok with paying a bit more, but I would like to not have to deal with the local carriers.Any pointers of what would be the optimal shipping option?

author: thm_w
author_rank: Super Contributor
timestamp: August 06, 2024, 08:58:32 pm
content: DHL express, UPS express, or Fedex. You will probably have to pay some import fees on those. Then DHL express DDP would have those fees included.You can probably read some existing threads here.https://www.eevblog.com/forum/manufacture/jlcpcb-europacket-going-downhill/If you can wait, not sure what the issue with local carriers is.
Swift S41-20 microscope for home SMD assembly? - Page 1
Forum section: electronics / general

author: Solder_Junkie
author_rank: Frequent Contributor
timestamp: May 08, 2023, 10:23:26 am
content: I currently mostly use 1206, or occasionally 0805 size SMD, with an Optiplex head band magnifier. While it is “OK”, it is not so good for 0603 sizes which I need for boards working into the GHz range.I note elsewhere on this forum a recommendation to use an Amscope SE410, rather than the SE400 model, as it was apparently more suitable in terms of working height for assembly/soldering of SMD components.The Swift S41-20 maybe the same item as the SE410 with a different label. The Swift seems to be more readily available in the Uk (next day from Amazon).While I can afford the Amscope SM-4B type of microscope, the size and weight don’t seem suitable for the space I have.Any thoughts, or recommendations? Especially regarding the Swift model. Thanks.SJ

author: SparkyStan
author_rank: Newbie
timestamp: May 09, 2023, 01:35:22 am
content: I have the Amscope SE400-X at home and the Swift S41-20 at work, essentially they're the same aside from the Swift has 2 goose neck LEDs. I haven't been able to notice any difference between the two optically, though I haven't had both side by side to compare. Working distance is pretty good (eye balled against some letter sized paper it's around 8.5-9") and I've used it to solder 0402s and 0.5mm pitch ICs without issue. For reference both units I use have the 1x objective len and 10X eyepieces. I will say, the adjustable zoom on the higher end Amscope models is nice to have.If Amazon in your locale still does free returns, I think the Swift is worth a go and worst case you can send it back!

author: Solder_Junkie
author_rank: Frequent Contributor
timestamp: May 09, 2023, 05:39:55 am
content: Thanks Stan, I’ve ordered a Swift. The high end zoom models would be nice but look to be too bulky and heavy for home use.In the UK domestic buyers have the right to return pretty much anything bought remotely, although return carriage may have to be paid if the item isn’t faulty or incorrectly described.SJ

author: Solder_Junkie
author_rank: Frequent Contributor
timestamp: May 10, 2023, 10:35:20 am
content: The Swift S41-20 arrived and is excellent. The dual LED lights really help and are more or less essential.I like the fact that the x10 and x20 eyepieces can be swapped without needing to adjust the height.Again thanks for the feedback Stan.SJ

author: sulzer
author_rank: Newbie
timestamp: August 04, 2024, 02:37:00 pm
content: I am interested in this Swift S41-20 model.For SMS welding and inspection needs, all without paying too much.You could perhaps present it to us and why not a review.Thanks again
Who makes this thermistor assembly? - Page 1
Forum section: electronics / general

author: Faringdon
author_rank: Super Contributor
timestamp: August 02, 2024, 07:48:41 am
content: Hi,Do you know who makes this thermistor assembly?...So, This ring thermistor assembly is coming up as "Ali express but not available in UK"Do you know order details for it?It is marked "EJST2-3.7"https://ibb.co/vq4Dn2whttps://ibb.co/PZfQW6k(old project been dug back up...but thermistor details missing)

author: ZenHombre
author_rank: Newbie
timestamp: August 02, 2024, 05:11:18 pm
content: NTCALUG02A103FL by VishaySimple google search led to Ali Express which had the model number.
How to get power supply control chips very quickly? - Page 1
Forum section: electronics / general

author: Faringdon
author_rank: Super Contributor
timestamp: July 31, 2024, 09:08:16 am
content: Hi,Does anyone know how we can get any of these ICs without having to wait the three days for delivery from mouser or digikey?NCP1239ED65R2GNCP1239KD65R2GNCP1239BD65R2GNCP1239DD65R2GNCP1239RD65R2GNCP1239PD65R2GNCP1239QD65R2GNCP1239LD65R2G

author: tggzzz
author_rank: Super Contributor
timestamp: July 31, 2024, 09:34:11 am
content: Quote from: Faringdon on July 31, 2024, 09:08:16 amFindchipsOctopartFleabayRSFarnellTMEVisit the factoryVisit the distributorNot difficult, really.But first it would be useful for you to understandwhyyou need them so urgently. After all, you have sold your PSU company, so presumably this is for non-professional purposes.

author: Kean
author_rank: Unknown
timestamp: July 31, 2024, 10:06:23 am
content: Easy... order them last week.

author: Phil1977
author_rank: Frequent Contributor
timestamp: July 31, 2024, 10:20:11 am
content: Quote from: Kean on July 31, 2024, 10:06:23 amIf you want to know about the weather, look out of the window.If you want to know about the weather tomorrow, look out of the window tomorrow...

author: tggzzz
author_rank: Super Contributor
timestamp: July 31, 2024, 11:23:11 am
content: Quote from: Phil1977 on July 31, 2024, 10:20:11 amThe standard trick (around here) is to predict that tomorrow's weather will be the same as today's weather. IIRC you will be right >50% of the time

author: SMTech
author_rank: Frequent Contributor
timestamp: July 31, 2024, 01:10:40 pm
content: No, and this is true for heaps of parts. DK and mouser are the only immediate source for just about anything remotely specialist, this includes power and specialist ADC/DAC/OpAMP type ICs from TI/AD. RS/Farnell basically are the next day (when they manage it) option over here in the UK and their catalogues are limited. Many parts are simply not stocked by distribution in the UK or they are hidden behind that lovely, RFQ-PO-Supply chain that will probably take you 3+ days anyway.In vaguely commercial qtys a broker might find you some stock quicker than 3 days, but you have to trust them and their source. this is what Findchip etc might locate for you
SOT23 marked "WT7" - Page 1
Forum section: electronics / general

author: Faringdon
author_rank: Super Contributor
timestamp: July 30, 2024, 11:59:20 am
content: HiI have a SOT23 marked "WT7", and then "54" written in smaller letters andat right angle to the "WT7" text.It should be a BZX84-C36, but doesnt seem to correspond?BZX84-C36https://www.nexperia.com/product/BZX84-C36

author: Kean
author_rank: Unknown
timestamp: July 30, 2024, 12:25:43 pm
content: How does it not seem to correspond?The datasheet you linked clearly says "%T7" is indeed a BZX84-C36!The "%" is a placeholder for the country of manufacture - and "W" is China.Look at an older NXP (rather than Nexperia) datasheet to see the missing detail regarding the "%" or "*" placeholders.e.g.https://www.mouser.com/datasheet/2/302/BZX84_SERIES-114620.pdfSomeone should get a good kick for leaving this info off the newer datasheets, but it took me only 30 seconds to find this info.

author: gamalot
author_rank: Super Contributor
timestamp: July 30, 2024, 12:51:47 pm
content: It is definitely a BZX84-C36.
Yamaha CL Clone China Source - Page 1
Forum section: electronics / general

author: kylehunter
author_rank: Regular Contributor
timestamp: July 12, 2024, 10:18:00 am
content: Hi there,I'm looking to order a fair amount of extra 8mm and 12mm CL feeders from China. Can I have a source or two that people have used before? The supplier I usually order from has gone out of business, and I want to avoid ordering a large amount of feeders without at least having a referral from someone else.Thanks!Kyle

author: mon2
author_rank: Frequent Contributor
timestamp: July 12, 2024, 12:27:14 pm
content: Yes. Try Elissa. Large company in Shenzhen who builds these feeders. Met with them last October in China during Nepcon fair time.She also builds an incredible adjustable smd stencil adapter we use for our Ekra X4 printer.Quote

author: glenenglish
author_rank: Frequent Contributor
timestamp: July 12, 2024, 07:53:51 pm
content: Suggest ksunsmtover the past 7 years , I have purchased > 180 CL feeders from this companynumerous machine spares, trolleys etc, now I buy my (copy) Samsung air feeders from them, 70 so far...so , total business > 30,000 USD.if I had a problem with one, they send parts without question....https://www.ksunsmt.com/products/smt-parts.htmlmy contact jenny@ksunsmt.com

author: 48X24X48X
author_rank: Frequent Contributor
timestamp: July 13, 2024, 11:03:14 am
content: Quote from: glenenglish on July 12, 2024, 07:53:51 pmWould recommend them as well. Also Shenzhen Wenzhan on Alibaba. Their feeder comes with longer warranty compared to others.

author: law
author_rank: Regular Contributor
timestamp: July 15, 2024, 07:55:36 am
content: I just paid for some 8mm x 4mm and 2mm pitch feeders from Elissa at Shenzhen Wenzhan.They had the lowest cost feeders even though their shipping cost was higher. They ended up being cheaper overall.Will see how they go!

author: Mangozac
author_rank: Frequent Contributor
timestamp: July 15, 2024, 10:35:47 pm
content: I hope this isn't too off-topic (I can move to a new topic if so) but has anybody got a good reference on how to service CL feeders? Did Yamaha/Philips/Assembleon ever publish such information?

author: level6
author_rank: Regular Contributor
timestamp: July 27, 2024, 01:49:45 pm
content: Do they offer electric feeders? I did not see any listed in their catalog.

author: 48X24X48X
author_rank: Frequent Contributor
timestamp: July 28, 2024, 12:49:48 am
content: Quote from: level6 on July 27, 2024, 01:49:45 pmShenzhen Wenzhan have them.
Air connector - Page 1
Forum section: electronics / general

author: artag
author_rank: Super Contributor
timestamp: July 25, 2024, 09:53:32 am
content: I bought a secondhand pneumatic dispensing controller, intending to use it for prototype paste application. Despite being sold 'for parts' it seems to work ok. However it has air connectors that I'm not familiar with. Anybody recognise these ?They're about a 7mm bore so I presume would accommodate 6mm or 1/4" tubing but have a bayonet fitting. The outer diameter is about 12mm (probably 12.7). They also appear to self-seal so I'm reluctant to replace them with pushfit if I can find some matching connectors easily.The machine is a Techcon Systems (now owned by Oki) TS9702. It seems straightforward to use (except for some functions I don't understand) but I haven't been able to find any instructions online. It would be interesting to read them if anyone knows where they might be found.

author: elektryk
author_rank: Regular Contributor
timestamp: July 25, 2024, 10:31:09 am
content: Do you have photos of the mating connector?Maybe this will fit?https://aliexpress.com/item/1005004781765701.html

author: artag
author_rank: Super Contributor
timestamp: July 25, 2024, 10:36:16 am
content: Could do. Cheap enough to try ! Thanks ! I have ordered a selection.In fact, all the syringe adapters on aliexpress seem to have that. But the one I already have ends in a bare tube and illustrations of other pneumatic controllers seem to show a bare tube going into a Festo-style pushfit.As an aside, I've called it a bayonet connector because it has 2 locating / locking pins like a BNC. And other electrical connectors have 2 or 3 pins doing the same.But if I look at 'air bayonet connectors' I find the common locking metal air connectors which don't have puns at all. they have a ridge which is retained by spring-loaded ball bearings. Makes me wonder why that is and what an actual bayonet (the weapon) uses.

author: elektryk
author_rank: Regular Contributor
timestamp: July 25, 2024, 10:44:42 am
content: You may find it even cheaperhttps://aliexpress.com/item/1005006871832738.htmlBTW In my DIY dispenser I simply placed such 6mm pneumatic connector and cut locking pins from syringe connector.

author: artag
author_rank: Super Contributor
timestamp: July 25, 2024, 10:49:11 am
content: Yes, that was my plan. I might still have to do that if the diameter is wrong but I may have to replace some internal tubing to make it fit. Those are really intended for bare nylon or polyester tubing but I find they work pretty well on bare PVC tubing.Is there a solder paste specifically for pneumatic dispensing ? I have some in a syringe and use it with a manual handle but it does seem very stiff and I use quite a large diameter needle. There may be a more liquid version I should try.

author: artag
author_rank: Super Contributor
timestamp: July 25, 2024, 04:02:06 pm
content: Quote from: artag on July 25, 2024, 09:53:32 amWow, Oki sent me a manual. I'm pretty surprised and very impressed with their support.