Laser engraving machines are used on semiconductors for marking SMD codes. SMD codes are the series of numbers or data codes that appear on semiconductors. To identify semiconductors, manufacturers use the SMD codes which primarily consist of alphanumeric numbers. SMD codes can be created and marked on semiconductors, irrespective of the length of numbers and the size of the semiconductor.
On semiconductor SMD marking codes are applicable in industries such as televisions, phones, computers, medical devices, automotive, aerospace, etc. Other details on the semiconductor are logo, device name, company name, etc.
Manufacturers use on semiconductor SMD marking codes for the purpose of identification, quality assurance, trademark protection and traceability. SMD marking codes are tiny and require printing by a laser machine without missing any detail.
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The stationary fiber laser machine is a large size machine, equipped with a lifting stroke, a wide working table, a scanning galvanometer, etc. It is used for marking in medical devices, electronics industries, etc.
The split laser machine has the marking area, lifting stroke and scanning galvanometer in one part and the other part is the control unit. It is applicable in semiconductor numbering, electronics components, etc.
The enclosure fiber laser machine has an enclosed working table, control panel, and anti-wavelength crystal. It is compact in size and applicable for use in semiconductor marking, electronic components, medical devices, etc.
The desktop laser marking machine is an average size laser machine. It is equipped with a monitor, which requires placing it on an elevated surface. It is used for marking semiconductors in the electronics industry.
The mini fiber laser machine is a compact size laser machine. It is equipped with an inbuilt computer, a working table, lifting stroke, etc. It is used for marking codes on semiconductors in the electronics industry, etc.
The handheld fiber laser marking machine is a mini size laser machine. It has a small working table and a scanning galvanometer, it is applicable in electronics, semiconductor, medical device industries, etc.
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On semiconductor SMD marking codes are often alphanumeric characters. Whatever code pattern you use should be prepared for marking.
Even though SMDs are in small sizes, the laser marking machine can mark numbers and alphabets. Simply set up your computer and laser marking machine.
The laser marking machine uses a laser beam to mark the semiconductor SMD. The process is highly automated. All you have to do is press the “mark” button.
On semiconductor SMD marking codes are often found on the printed circuit board of electronic appliances. SMD cases are very small, this means that they can not be printed with any other means other than a laser marking machine due to limited space.
SMD codes are usually one or two numbers, alphabets or a combination of both. The laser marking machine can mark on semiconductor SMD casings with high accuracy.
The laser marking machine is the only technology that can be used for semiconductor SMD marking because of its small laser beam spot. The laser beam marks with high precision that is readable and permanent.
The laser machine marks at a speed of 7000mm/s. With the fast marking speed, you can mark continuously for long hours.
Alldo Tech laser marking machine marks at a speed of 8000mm per sec. The marking process is stable, there is no freezing or interruptions when marking.
Alldo Tech laser engraving kits are very affordable for users. It is cost-saving and provides a long term use.
Alldo Tech laser marking equipment allows users to mark different depths based on their requirements. A depth of 0.6mm can be achieved.
The noncontact process requires no replacement of tools, thereby saving cost on maintenance.
The laser marking machine is reliable for fast and high precision marking on metals and nonmetals. It saves cost and has a long service life.
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Semiconductor SMDs materials like ceramics; synthetic materials like epoxy resin; metals and metalloids. All these materials are laserable. On semiconductor SMD code marking is found in almost all electronic and electrical devices.
Oftentimes, the contents marked on semiconductor SMDs are tracing codes, simple alphanumeric characters, complex 2D codes, customised data, etc.
SMDs are very small so their marking can only be made with a laser marking machine. This is possible because of the machine’s laser beam. Since SMDs are small, the data markings on them are also small. For instance, an SMD can have a marking size of 0.6mm to 0.8mm.
Semiconductor-producing companies and other industries laser mark their semiconductors due to the following reasons:
Laser marking is a replacement for ink printing as it is impossible to carry out ink printing on semiconductor SMD.
Before the laser machine begins to mark, the first thing to do is to prepare your number patterns or codes for marking.
When marking on semiconductor SMD, the laser beam alters the surface of the semiconductor. The laser beam is emitted by an oscillator and scanned with a mirror. The focusing lens is used to focus the beam on the semiconductor surface and it is marked by altering the surface. The altered surface will consist of the marked codes.
This marking method is resistant to abrasion and does not fade because the marking process uses light to change the semiconductor surface.
The laser marking process involves sending out the low-powered beam unto the material surface causing the material to oxidise. This means that the laser beam changes the appearance of the material. The result is a permanent high-contrast marking. In laser marking, no material is removed and the surface retains its texture.
In the laser engraving process, the heat from the laser beam vaporises the material surface and cuts into the surface to remove some parts. This leaves a noticeable cavity on the material surface. The engraving depth can vary between 0.02mm to 0.125mm depending on the hardness of the material.
In short, the main difference between laser marking and laser engraving is in the removal of surface material, depth of marking/engraving and appearance.
Marking failures is common during the process of semiconductor SMD marking codes. The failure could be that the physical or chemical specifications are not met.
Errors that could happen when marking on semiconductor SMDs are:
Laser marking generally has proven to be more advantageous than traditional marking methods. This is because the laser marking technology is highly automated and it uses a laser beam to carry out the marking process. Marking semiconductors and other objects with the laser marking machine give high accuracy and precision. The engraving process is equally fast and suitable for many applications.
The following are the advantages of laser marking on semiconductor SMD:
Laser marking machines can make all electronic components as long as they are made with laserable materials like plastic and metal.
Fuse, circuit breakers, switches, power plugs, PCBs, and electronic housings can be marked accurately, quickly and directly using a laser marking machine. Electronic components are marked with a lot of details like 2D codes, serial numbers and other characters.
Electronic components are manufactured in bulk, hence, the most efficient way to mark them is by using a laser marking machine. Since the laser marking machine marks at a speed of 7000mm/s, time is saved on the production of electronic components.
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