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3rd Floor, Nanhai Plaza, NO. 505 Xinhua Road Xinhua District, Shijiazhuang Hebei China
+86-311-86935221
+61-0417-264-974
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PCB Soldering

  • The PCB soldering process can look difficult to inexperienced technicians.
  • However, it is one of the easiest and most enjoyable jobs for experienced technicians and engineers.
  • It involves fixing a component by dissolving a solder and running it on the two contacts that You want to join.

PCB Assembly
Capabilities

  • Placer Speed:
    6000 Chips/Hours
  • Lead time:
    25+Days (To Be Decided)
  • SMT:
    SMT, Through Hole Assembly Single / Double-Side SMT, Single / Double-Sides Mixture Assembly.
  • PCB Size:
    50 mm×50 mm ~450 mm×406 mm
  • PCB Thickness:
    0.5mm~4.5mm
  • Min. Diameter / Space of BGA:
    0.2mm / 0.35mm
  • Qualifications:
    ISO 9001:2008
  • Accuracy:
    <±40 µm, Under the Condition of 3σ,CPK≥1
  • Min.Line / Track Width:
    3mil
  • Minimum Width / Space of QFP
    0.15mm / 0.3mm, Minimum Diameter / Space of BGA: 0.2mm/0.35mm
  • Reliability Test:
    Flying Probe Test / Fixture Test, Impedance Test, Solderability Test, Thermal Shock Test, Hole Resistance Test, and Micro Metallographic Section Analysis, etc.

PCB Soldering
process

  • 1
    Send Files To Us(Gerber&BOM)
  • 2
    Quote In 24 Hours
  • 3
    Confirm The File and Order
  • 4
    PCB Fabrication Part procurement
  • 5
    Soldering, Testing Quality Control
  • 6
    Packaging& Delivery

PCB Soldering
cost

Prototype+Components Procurement+Soldering+Testing

More Discounts for Medium-Volume Prices

Accept T/T, cash, credit card, PayPal, bank transfer, etc.

Our two factories have price support for different orders.

PCB assembly
Lead Time

average production time for Printed Circuit Board Assembly) is board presented after the entire parts and components get soldered and rightfully installed. A PCBA orders:

20-30
Production Days
=
15-20
PCB Fabrication+Parts Procurement
+
5-10
Assembly
  • * Please triple-check all files and information before placing the order.
  • * Shipping time depends on the destination country and the shipping method selected.

How to order

In Order To Quote You, We Need:

Gerber File

.brd / .pcb / .pcbdoc / .gbr / .cam

BOM

The Microsoft Excel format (.xls / .xlsx / .csv / or tab-delimited)

why us

Quickturn PCB Assembly

  • PCB fabrication and parts procurement are carried out simultaneously, saving time
  • Prototype orders placed within 24 hours
  • Quote and Order Online at any time

Competitive Price

  • Our price is one of the most competitive in the world
  • Own factory with good cost control, no hidden cost in it
  • Accept T/T, cash, credit card, PayPal, bank transfer, etc.
  • Our two factories have price support for different orders

On-Time Delivery

  • Common methods are DHL and FedEX, door-to-door service. Normal Shipping Time only 2-4 Days.
  • Cooperate with two transportation companies for many years with discounted prices
  • Anti-static+Moisture-Proof+Anti-Vibration Packaging; Inspection certificate
  • Professional agent To Iran, Pakistan

Quality Assurance

  • All products follow the IPC or UL Standards and the ROHS&REACH standards.
  • 98% customer positive evaluation and satisfaction Standardized factory processes and management Multiple testing services

Return and Refund

  • In case our PCB is not usable due to our fault, you can ask for compensation.
  • We can refund to your account directly or rework the unusable boards or re-fabricate your PCB and re-ship to you at our cost, but please cooperate to solve the problem if need to rework.

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PCB A FACTORY SCALE

We have two PCB assembly factories, one in Shijiazhuang, one in Shenzhen.

The factory in Shijiazhuang is a dedicated division of our advanced service(military sector), equipped with 4 SIEMENS SMT lines, and the Shenzhen factory is dedicated to our standard service (Non-Military) equipped with 4 YAMAHA SMT lines, X-ray and AOI, providing a quality assembly service with very reasonable prices.

We can provide all kinds of Electromagnetic Interference (EMI) responsible for many cases of circuit board failure. EMI causes about 50% of PCB prototype assembly service you, including wiring harness assembly, injection, and conformal coating.

How To Remove Solder? (Improved Way)

Removing solder from the circuit board can be a challenge. You can also leave the solder there, of course. Unless the solder creates short circuits or structural problems, you can heat the solder until it melts, and then push your components through. The solder will still work. You will even get a connection to it.

However, if the old solder will cause problems, then you have no choice but to remove it. Fortunately, you have several options for removing this solder, and each one requires some sort of tool. 

This guidance will show you how to remove it, hope it will be helpful.

Table of Contents

On How To Remove Solder, Removing solder from the circuit board can be a challenge. You can also leave the solder there, of course. Unless the solder creates short circuits or structural problems, you can heat the solder until it melts and then pushes your components through. The solder will still work. You will even get a connection to it.

However, if the old solder will cause problems, you have no choice but to remove it. Fortunately, you have several options for removing this solder, and each one requires some tool. 

This guidance will show you how to remove it; I hope it will be helpful.

https://youtu.be/wMLvArUmLmk

How To Remove Solder From Circuit Board

Regardless of your project, you have several ways to remove solder from, or desolder, your circuit board. These ways range from machine-powered tools to manual, but they will all do the job. For most DIY projects, you only need a desoldering pump and braid.

There is also a solder wick. Beyond those, there are methods for more specialized tasks and contexts. Either way, tool choice often comes down to purely personal preference.

1.1 Choose a Desolder Method

Regardless of the tool, desoldering comes down to only a few simple methods. They all have advantages and disadvantages. Often, the way you choose comes down to what you are desoldering, how big it is, and where it is.

1.1.1 Grinding and Scraping

Your basic desoldering techniques are grinding and scraping the solder away. These techniques will take some time, but they will work most of the time. Plus, you only need a knife, scraper, or pick.

remove solder .png

These techniques are also the most controlled and organized. The trick is all in your technician skills. Fatigue is the only drawback. Because of this, most people reserve grinding to the final surface preparation steps.

1.1.2 Machining and Milling

While you will want to fit your milling machine with a microscope for precision, you can drill away the solder mask from the circuit board. Milling out the solder will take much less time than scrapping, but it requires high levels of skill and experience.

The drill bit can dig into the PCB itself, damaging it in the process.

remove solder .png

1.1.3 Chemical Stripping

This technique uses a liquid chemical solvent you must apply with a brush or swab. It would help if you only used this technique to remove solder from copper plates or solder surfaces.

Even then, you still want to use masking tape or some other protective material to protect your circuit. The solvent breaks down the solder like a paint stripper, but it will deteriorate the base material if you allow it.

1.1.4 Microblasting

If you must remove solder from a large surface area, then you want to micro-blast your PCB.

This technique uses small bench-top systems that propel abrasive materials at the target area through a pencil-shaped handpiece, which must be flushed away after application. This abrasive material blasts away the coating.

remove solder .png

How To Remove Solder From Circuit Board Holes

The above techniques work on surface-mounted components, but through-hole soldering requires a much different approach. Fortunately, you have several helpful PCB hole desoldering options, regardless if you want to remove a member or wish to remove any excess solder.

2.1 Desoldering Bulb, Pump, or Solder Sucker

 Also called solder suckers, desoldering bulbs are the most popular method for removing solder from circuit board holes. After securing and preheating the PCB and void in a vice or PCB holder, you suck the solder off the board by squeezing and releasing the bulb from behind the hole.

To prevent damage to the board, you should re-solder your soldering iron now and then, as the technique will remove solder from it as well.

You can also get these tools with or without the rubber bulb. In these desoldering pumps, a plunger replaces the bulb, but their operation is identical.

remove solder.jpg

2.2 Drill

If you cannot use a bulb for any reason, you can try removing the solder from your circuit board holes with a drill or pin vise.

Drilling is another standard desoldering method, but you must use a small enough carbon, cobalt, or high-speed steel bit, as most PCB holes are 0.029 inches in diameter.  Oversized bits will remove the tracing within the hole, damaging the board.

remove solder.png

2.3 Desoldering Braid/Wick

No longer in everyday use, some technicians still swear by the good old desoldering braid. These ropes of tiny woven copper wires wick up any nearby solder once heated. You place a new braid on top of the hole or solder and then apply heat until saturated to use the braid.

2.4 All-in-one solutions

Besides the above methods, you can find a few combo units. These tools meld a desoldering tool to a soldering iron.  You can get them with either a desoldering bulb or plunger. These tools let you desolder while keeping one of your hands-free.

You can even find fully electronic versions of them that will automatically suck the solder for you. There are also a few models dedicated to removing solder and nothing else.

How To Remove Solder Without Wick

The techniques mentioned above are the most common ways to remove solder from a circuit board, but they are by no means the only way to do it.

After stripping off any insulation and twisting the wires together, you follow the standard procedures for using solder wick. For instance, you do not need an actual wick. It would help if you had anything that will absorb molten solder. Any fine stranded wire will do, such as old CAT5 Ethernet cabling.

If you need something more efficient, you can dip your homemade wick into solder flux before using it.

If you do not have any stranded cabling around, you can use some thin rod to push out the solder instead. You push the rod through the hold while heating it from the other side, and the rod takes care of the rest.

To prevent soldering the rod instead, you want something that does not readily fuse, such as carbon pencil lead, stainless steel, or wooden toothpicks.

How To Remove Solder Without a Soldering Iron

Up to now, we presumed that you have a soldering iron and know how to use it. However, what should you do when you do not? For most of these techniques, you do not need an iron.  While they do make solder work more comfortable and faster, but they are never necessary.

A soldering iron is little more than a heated piece of metal. Thus, you can substitute it with any other wild piece of metal. Two long, flathead screwdrivers with a propane torch are perfect for this.

Generally, you will have one to use a screwdriver you do not mind discolored, and another one you manage covered in solder.

From there, you have to heat your iron-replacement screwdriver until it turns red, and then use it as you would use any other soldering iron. You want to do this close enough to the soldering area so you can use the screwdriver before it cools off.

Molten solder should adhere readily to a cold screwdriver. You use the other screwdriver as a wick. Do not use your screwdriver wick to pick or chip the solder, as this can damage your PCB and components. You can heat the screwdriver to clean off the solder.

How To Remove Old Solder

It becomes increasingly challenging to melt as solder ages, especially with an essential soldering iron and solder sucker. However, the great thing about solder is that it hasn’t changed since its invention.

Sure, the materials we use have changed to make better connections, but modern solder melts the same way old solder did. That is also how you remove old solder too. You apply a new solder layer, and eventually, the heat will melt the old stuff underneath.

You then remove it with any of the desolder techniques mentioned above.

How To Remove Solder Flux

Depending on the solder you use, you may see a bit of flux build up around your soldering area. This flux is harmless mainly to leave it there, but you can clean it off with a simple technique.

How this technique works will depend on your solder and flux, so you will want to check the manufacturer’s documentation. Some DIY experts say you can use isopropyl alcohol or distilled water to remove no-clean change, but that comes with risks.

You can also use one of the many chemical cleaners for flux on the market. They all come in aerosol cans like hairspray or shaving cream.

After spraying the flux area, you can use a stiff brush and a set of dental picks to clear the flux out of the cracks and crevices. Once you are done, you can use a cotton swab to dry up any remaining cleaner and change.

You can repeat the process until you remove everything, going as far as using compressed air as needed.

solder.png

Conclusion

While most old solders will not damage your PCB or circuitry, there are times when you want to clean your circuit board of solder thoroughly. To remove solder, you must use a desoldering tool in conjunction with a soldering iron.

Once you have all your tools ready, you can start removing the solder from your boards and components. If you need help choosing the right desoldering tool for your project or instructions on using it, please feel free to contact us.

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