Home - Blog

Standard PCB Drill Sizes-Tips You Should Know

A few decades ago, PCBs were drilled using simple drills. Typically, the operator had to move panels to the relevant Y and X coordinates and pull the lever to enable the drilling of the hole. The process was repeated several times until the required number of holes were drilled.

 

Today, things have changed and the fact that one PCB could have over 1000 holes drilled means that it is no longer feasible to use this traditional method to drill holes in a PCB. Standard PCB drill sizes have made the process fairly easier. They make use of automated drilling machines fitted with standard PCB drills that make the required number of holes.

YouTube video

A few decades ago, PCBs were drilled using simple drills. Typically, the operator had to move panels to the relevant Y and X coordinates and pull the lever to enable the hole’s drilling. The process was repeated several times until the required number of holes were drilled.

Today, things have changed, and the fact that one PCB could have over 1000 holes drilled means that it is no longer feasible to use this traditional method to drill holes in a PCB. Standard PCB drill sizes have made the process fairly easier. They use automated drilling machines fitted with standard PCB drills that make the required number of holes.

PCB Drill Sizes

Thus, it is critical only to buy those in which Standard PCB drill sizes have been used when buying PCBs. If you are drilling the holes by yourself, you must buy standard drill sizes PCB machines. If you supply the boards to clients, they may require that you meet specific standards and specifications. The trends are that most houses ask for finished standard hole sizes that allow them to make adjustments depending on their needs.

Non-professionals find it easier to work with predetermined standard hole sizes, so working with Standard PCB drill sizes may give you an upper hand. The machines that drill the holes vary in size, and their designers consider the size of the holes required and the use to which the PCB is to be put.  

When planning to purchase drills, considering the aspect ratio between the boards’ thickness and the size of the training to be used is mandatory. It ensures that the aspect ratio is considered, and the PCB must match the capability of Standard PCB drill sizes to be used. For instance, smaller holes that are 0.006’’ require drills that are 0.062’’ while those that are smaller 0.012’’ may require exercises that are less than 0.125.’ Luckily, most commonly used materials come with their corresponding holes sizes, making your work easier.

Creating vias may require drilling holes in the PCB and plate them in stacks before they are laminated together. If the hole to be drilled is smaller than 0.001’’, lesser technology may drill the hole. After drilling, the holes may have to be plated and used in circuits with compact designs but have been traced.

standard pcb drill sizes.jpg

Standard PCB Drill Sizes

Drill Holes

When obtaining the standard PCB drill hole sizes, it may be necessary to follow certain rules to limit wastage. For instance, when the component is Xmm, you should drill an X+ 0.3mm hole. If the component is 0.4mm, drilling a hole about 0.7- 0.8 mm may be necessary. If you make the hole bigger, you will likely end up with more waste when you start soldering. On the other hand, it will be difficult to stuff the components when you make them smaller. Also, notice that it may be difficult to have the PCB plated together.

Decreasing the drill size comes with a host of other problems that include stuffing. Therefore designing boards that allow you to use standard PCB drill hole sizes is necessary. Also, there is a panel limit of drill holes that are accepted in DSS and SSS. For SSS, it is recommended that you observe a limit of 500 holes while the maximum of 2000 holes must be observed for DSS panels. You may choose to use inch sizes. However, it is recommended that you use metric units such as 0.1mm, 5.0mm, and so forth. Notice that it is important that you also do your best to minimize overlapping drill holes.

standard pcb drill sizes.jpg

Standard PCB Drill Sizes mm

The table includes a size drill measurement system that provides for metric, fractional, letter, and wire gauge numbers that you should consider using. If you do not know the holes’ correct size to drill in your PCB, the PCB standard drill sizes mm chart could provide you with some reference materials. It makes the whole making process simpler.

Hole making

Mm, are used to make standard holes into a workpiece. Other machines may be used to cut and remove unwanted materials but may require milling machines. It may also require specialized tools such as tapping machines and drill presses. You may perform the hole-making process as a secondary machine-making process. It could also be done to add features that were considered costly or to help improve the tolerance of the PCB. The hole is cut from an existing workpiece board and may be characterized by different features depending on the application it is to be put to. In PCB standard drill sizes, the following aspects are imported:

Tolerance – How precise you are in cutting determines the understanding of the PCB. Using sharp equipment and appropriate hole-making tools may increase tolerance.

Depth- the cutting tool used determines the bottom of the hole. It is possible to have a blind or a through-hole.

standard pcb drill sizes.jpg

Standard metric PCB drill sizes

Choosing the right PCB drill sizes determines the kind of work you will finally end up with. The drill chart provides a list of standard sizes that include metric, wire gauge numbers, and letters to choose from. The diameters are shown in both metric Units and English. The fractional sizes are usually listed in inches, and the metrics are all in millimeters to make your work easier.

Conclusion

Having looked at the standard PCB drill sizes and how you can drill holes in your PCBs using the right tools, you should be able to drill holes in your PCBs without a problem. All you have to do is understand the PCB’s needs and purchase the right drill sizes to help drill standard hole sizes.

Avatar photo
Emma Lu
Our professional engineering support saves our customers a lot of trouble and loss. >>>>>> After you place the order, our engineer will conduct technical reviews to make sure the parts can be mounted well/correctly on the boards. We will check if the component packages match well with the Gerber footprints, if the part numbers you provided match well with the descriptions, and if the polarity is clearly marked. >>>>> When your design is ready, please send your Gerber and BOM so we can quote and start!

Services