In this article, we will be revealing to you another material suitable for printed circuit boards. This is called the Shengyi WLM1 PCB Material.
You may be wondering what this is all about and if this PCB material is going to suit your PCB needs. We will be discussing the properties of this material, its features and its applications. Also, we will discuss the processing guidelines of the Shengyi WLM1 PCB Material.
Please continue reading if you wish to gain vast knowledge on this PCB material.
What are the Characteristics of the Shengyi WLM1 PCB Material?
The following are the characteristics of the Shengyi WLM1 PCB Material.
Halogen-free Material
When a material is halogen-free, this means that there are no halogens present. Examples of halogens include Chlorine, Fluorine, Bromine, etc. What this means is that halogen-free printed circuit boards possess reduced polarity in contrast to materials containing them.
Also, this is why the Shengyi WLM1 PCB Material has the ability to withstand high electric shock. They also have smaller coefficient of thermal expansion
Reduced discoloration after light irradiation and heat treatment
The Shengyi WLM1 PCB Material is a top-quality one and is very useful for printed circuit boards. This is because even after undergoing heat treatment or light radiation, there will be a reduction in the discoloration.
High Temperature for Glass Transition
The temperature for glass transition, Tg is high at 200 degrees centigrade. This makes their thermal expansion lower. Furthermore, their printed circuit boards undergo dimension changes that are lesser at higher temperatures.
Furthermore, with this high Tg, the Shengyi WLM1 PCB Material has better moisture and heat resistance. Also, you can expect thus material to have better chemical and mechanical resistance in contrast to the normal FR-4 PCB material.
Applications of the Shengyi WLM1 PCB Material
Below are the applications of the Shengyi WLM1 PCB Material.
IC Package Material
The Shengyi WLM1 PCB Material is useful in IC package material. This is because the material is useful in advanced packaging. Its usefulness is seen due to its heat resistance, moisture, and mechanical strength.
COB
This is also known as chip on board. The Shengyi WLM1 PCB Material is very important for chips on board. This is because the strength to weight ratio is great.
The Shengyi WLM1 PCB Material is also applicable to LED applications. This is because the material supports these LEDs physically and helps in transferring heat from bulbs so as to increase their performance, and also prevent any damages coming to them.
What are the Properties of the Shengyi WLM1 PCB Material?
The Shengyi WLM1 PCB Material boasts of the following properties.
Coefficient of Thermal Expansion (Z-axis)
Before Tg, the Shengyi WLM1 PCB Material has a CTE of 20 ppm/℃. After Tg, the value changes, making it become 125 ppm/℃. Also, at a temperature of 50 to 260 degrees centigrade, the value stands at 1.2%.
Coefficient of Thermal Expansion (X and Y-axis)
For Wrap-α1, the Shengyi WLM1 PCB Material has a CTE of 11 – 13 ppm/℃. While for Fill–α1, the value remains the same having a CTE of 11 – 13 ppm/℃.
Thermal Stress
Another property of this material is thermal stress. Here, the Shengyi WLM1 PCB Material gets a pass. This value is possible with two conditions. Also, it occurs at a temperature of 288 degrees centigrade and with solder dip.
Flammability Rating
The Shengyi WLM1 PCB Material has a HB flammability rating. This means that the testing of this material was done on any horizontal position. This is called horizontal burn. The burning was also done at a lesser rate compared to a specific maximum.
Arc Resistance
This material also has an arc resistance of 180s. This refers to the material’s resistance to effects of low-current, high voltage, as well as resisting the formation of any conducting path along the surface. Also, this value is affected by the ionization degree, the arc’s cross section and the arc’s length.
Flexural Strength
Furthermore, another great property of the Shengyi WLM1 PCB Material is its flexural strength. It has a value of 480/370 MPa.
Water Absorption
The Shengyi WLM1 PCB Material has a water absorption value of 0.08%. This shows that this PCB material has a low rate of water absorption. Therefore, you can be sure that this material will not absorb water easily and that is why it is very useful for different applications.
Peel Strength
The Shengyi WLM1 PCB Material also has peel strength of 0.93 N/mm. This value signifies the average load for every unit bond line width which is necessary for the separation of materials that are bonded having a separation angle of 180 degrees.
What are the Storage Conditions of the Shengyi WLM1 PCB Material?
Note that the Shengyi WLM1 PCB Material must be stored at room temperature and in a ventilated place.
Furthermore, avoid this material from having direct contact with rain and sunlight. Also, avoid any corrosive gas erosion.
Also, for the Shengyi WLM1 PCB prepreg, store it in its initial packaging form and avoid stress. In addition, don’t allow any deformation to come to the sheet caused as a result of an inappropriate condition for storage.
Drilling Conditions when Processing the Shengyi WLM1 PCB Material
For mechanical drilling, we recommend a new drilling bit. Use 1 stack/panel. Furthermore, make sure that the hole wall is of good quality. The drilling head and new drills’ life should have a reduced life of about 300 to 1000 hits.
Also, regarding the drilling parameters of this material, decrease the feed speed by about 10 to 20%. In addition, let it undergo a trial test. This will help you to work out the drilling parameter properly.
Conclusion
After reading through this article, you will surely understand that the Shengyi WLM1 PCB Material has lots of properties. Its features are great as well. Furthermore, choosing it for your PCB material will surely ensure you get the very best quality. If after reading through, you have some questions, do well to ask them here. We will surely attend to you.
