SolderingGeek is brought to you by the people at BEST Inc. This is a demonstration and learning channel dedicated to PCB assembly, hand soldering and PCB rework and repair techniques. The many "how to" videos allow soldering instructors or students in the electronics industry to refresh or learn new skills.
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I remember the good old days when you could still repair a PCB board by hand. Anyone else remember being able to count the connections on a PCB? Member when PCB was cancer causing? Ah, the good ol' days.
It is difficult to define hand soldering processes as they differ between assemblies (referencing the J-Std.) Machine soldering, either by wave or reflow oven is easy to define (and critique the quality of). Rework and new assemblies which have to be hand soldered is a different animal where stresses and thermal shock, etc. come into play if high integrity is to be retained. Intermetallic embrittlement and other fault elements have to be kept in check. To me (and much of the military) RoHS was a costly change and was not needed. Metallic form Lead is not the danger. Scientists spent decades perfecting the Sn63-Pb37 solder alloy. Government contractors are not obligated to follow RoHS in some instances, it depends on what is being manufactured.
Hey man! I see that there's been a few recent comments on this vid With that in mind I have a big question. I don't know if you're still active, but would it be possible to use this method on the Nintendo DS Cartridge pins? If so, video please ?! It would be absolutely amazing to see the process and restoration of very worn pins. DS cartridges naturally over the years corrode and there will be wear and tear leading to gold platings being gone. Also I think others would highly be interested in this as well. I for sure am 👀😄
Hello, The recommended tip temperature is about 600 degrees F (315C). It can be adjusted as needed after that but I don't recommend going much higher. Increased temperature will increase the risk of damage to the board and component as well as speed the oxidation of the tip, especially when using Pb-Free solder. I hope this helps! Thanks for watching! Kris Roberson Master IPC Trainer
The J-STD-001 1.7 says if the J-STD-001 is sited in a contract, the 610 does not apply unless separately or specifically required...why would this be the case if the 610 is a companion document to the J-STD-001...or given your explanation of each documents purposes?
Hi, Thanks for your question. The J-001 and the 610 are companion documents in that they both relate to the assembly and manufacture of electronic assemblies. The J-001 applies to the assembly process, i.e. what should each step of the process be able to achieve and what should the product look like after each step is complete. It answers the questions of, "How should the process be controlled to make a good device?" The assembly is evaluated at each step to ensure that the process is correct. The 610 is only the visual appearance of the finished assembly. That is, after the device has been through all of the assembly steps, heat cycles, rework or repair, etc. The criteria in the documents general match, but the 610 may have slightly different (sometimes less strict) criteria compared to the 610. The 610 takes into account that there may be slight degradation of the assembly by the time it's been through multiple assembly steps. If both are sited in the contract, then the customer (designer) has the responsibility to define what document take precedence when there is a difference of criteria between the documents. Thanks again for your question and for watching our content! Kris Roberson BEST, Inc. Master IPC Trainer
Hi Nick, Thanks for your question. The situation here was that these gold contacts were accidentally tinned during another process. We simulated this scenario and then demonstrated how to re-plate to achieve the gold-to-gold contact between the contact and connector spring pins. Thanks again for your question and for watching our content! Kris Roberson BEST, Inc. Master IPC Trainer
Hi! Thanks for your question and my apologies for the delayed reply. Rework of an assembly is defined as the act of reprocessing noncomplying articles, through the use of original or equivalent processing, in a manner that assures full compliance of the article with applicable drawings or specifications. In other words, when a defect condition is found on an assembly, the defective component is removed and another, functional component of the same type is placed on the assembly. This returns the product to the condition required by the customer (Designer). Whereas a REPAIR is the act of restoring the functional capability of a defective article in a manner that does not assure compliance of the article with applicable drawings or specifications. In other words, just fix the assembly by whatever means necessary. For example, if there is a wire on the assembly that breaks or gets cut. A rework would be to splice the wire back together. The original design did not specify a splice, so the assembly will be different from the original requirements, however, the assembly will function like the original device. I hope this answers your question! Thanks for your question and for watching our content. Kris Roberson BEST, Inc. Master IPC Trainer
If esd straps are necessary why have i never seen any of the component level circuit board repair specialists (louis rossmann, ststelecom, northridgefix, sorin, dustin malahay) ever use them in any of their repair videos? Did i miss the 1 video that each of them wore one or were they all wearing them off camera?
Hi, Thanks for your question! First, please allow me to apologize for the delay in replying to your question. I am not able to speak to why others are not wearing ESD straps. It's possible they are grounded off camera or using another ESD device. I would suggest asking the individuals about their ESD practices. Thanks for your question and for watching out content! Kris Roberson BEST, Inc. Master IPC Trainer
I watch those guys you mentioned as well. They are good at what they do but I think they may just not be aware of the real risks of esd since it is so invisible to us and doesnt always cause instant observable damage. Louisrossman for example just started out as a diy guy who had no training or knowledge and thus may not be aware or may not think its a big deal. I agree with the comment above, it would be interesting to ask them what they think of esd and how they think it should be dealt with.
that 12 volts guy who has a you tube channel repairing electronic gear and Mr Carlsons lab never have i seen them use wrist ESD straps , then again they may be using esd foot straps
Hi, Thanks for your question! I apologize for the delay in replying. Tin-Lead (SnPb) solder goes from solid to liquid (Reflows) at 183 degrees C (about 361 degrees F). Lead-Free (Pb-Free) solders, depending on the alloy, reflow at anywhere from around 220 degrees C (about 428 degrees F) and up. A good rule-of-thumb is for the tip to be set at around 315 degrees C (about 600 degrees F) to start and can be adjusted as needed. So why such a high temperatures if the solder melts at a lower temperature? The simple answer is efficiency and thermal dynamics. Thermal dynamics: When an item heats, it rapidly increases in temperature until it gets near the set point. Within a few degrees of the set temperature, the rise drastically reduces in speed. This same principle is why a pot of cold water and a pot of hot water will boil at approximately the same time. The cold water rapidly rises to near boiling, and then the last few degrees take longer to achieve. The other part is that when an iron is applied to a solder connection, the heat energy flows out of the iron tip into the device/connection/solder alloy. This causes the temperature of the iron to drop. If the temperature drop lowers the tip temperature below the reflow point, it will take a while for the iron to recover, increasing the time required to complete the solder connection. By setting the iron well above the solder reflow temperature, we have rapid rise in temperature to a point above the reflow. When the iron is applied to the connection, the same drop in temperature happens, but the tip temperature remains above the reflow point, allowing the connection to be completed in a rapid, efficient manner. To the other extreme, temperatures above around 700-800 degrees can also be used. However, the higher the temperature, the more risk of burning or over heating the component, board, or solder. Hotter does not always equal better. Temperatures approaching 900 degrees and above may cause certain alloys to vaporize which is a health hazard. I hope this helps! Thanks for your question and for watching our content! Kris Roberson BEST, Inc. Master IPC Trainer.
Hi, Thanks for your question. I apologize for the delay in replying. CIS stands for Certified IPC Specialist. A CIS candidate would be someone who works in the assembly process and who does not intend to conduct IPC training courses. The CIS training is modular, meaning it can be customized to fit the tasks the CIS candidate will be completing. So, if a CIS will not be dealing with Wires or Terminal connections, that module of the training and certification can be skipped. If you'd like more information, please don't hesitate to check out our website: www.solder.net Thanks again for your question and for watching our content. Kris Roberson BEST, Inc. Master IPC Trainer
Soooo this is not a review, its a commercial. A review doesn't just tell you something is the best then list its capabilities and package contents and options. It is an opinion based on the experience of the user. It needs to have the "reviewer" discussing their experience while using the product. Things they like or didn't like. Comparisons to other similar products if possible, etc etc. Additionally its helpful for a reviewer to share where to get the product and or other similar products, or information on what the base components are etc.
Our instruments installed near to a sea shore institure has pcb board corrosion issue. Could you kindly help on how to avoid this? Is it possible to fix this corroded board by cleaning with alcohol?
Wow! This is my first time ever hearing of 01005. Do you know if wired versions of this size exist? I'm a micro miniature artist and I have some wired 0201's, but wired 01005 would be even better for my projects.
DIPs typically come from the factory with flared legs so that they will hold themselves in the PCB if placed with an insertion tool. If the board you are desoldering was populated this way then you should always pull the desoldering gun away from the lead while flexing it toward the center of the chip. This means it will have to travel across the plated through-hole to rest on the opposite side and is significantly less likely to form a sweat joint.
Great video! Where does one get the wire heat sink tool shown in the video. Internet search with every word variation I could think of doesn't get it. We had these at Redstone Arsenal back in 1970 which is the last time I saw one until this video.
I know - I was looking for one too. They are called Anti wicking tweezers. Not cheap though, they cost about $30 since they are an out of production tool.
*I have been watching verious soldering training videos for the past two days now and is sad to see that nobody is telling us what type (make) of flux or solder they are using. I believe that is very important because there are quality flux/solder, and there are cheap ones. It makes all the difference including the iron temperature.*
Maybe use hotter iron (no need for flux and taping this way), clip rest the rest of wire and don't pre solder wire right up to insulation. Insulation gets damaged when wire is pre soldered right to it...
