Adhesive knowledge_Adhesive encyclopedia

potting compound for electronic components

Potting Materials for Electronic Components

2024-08-27

Protecting electronic components is essential to ensure their longevity and reliability, especially under harsh conditions. One of the most effective ways to achieve this is through the use of potting materials. These materials encapsulate electronic components, providing a barrier against moisture, chemicals, thermal fluctuations, and mechanical stress. This comprehensive article delves into various aspects of potting materials, including their importance, types, applications, selection criteria, application techniques, challenges, and future trends. Importance of Potting Potting materials play a variety of critical roles in protecting electronic components and improving performance. Here are some of the key reasons why they are indispensable: Environmental Protection: Electronic components are susceptible to a variety of environmental factors, such as moisture, dust, chemicals, and UV radiation. Potting materials create an airtight seal around these components, protecting them from potentially damaging elements. This protection is critical in outdoor applications, automotive systems, and industrial environments. Mechanical stability: The mechanical integrity of electronic components can be compromised by vibration, shock, and physical impact. Potting materials provide structural support, reducing the risk of damage during shipping and handling. This additional stability is critical for components used in aerospace, military, and other high-stress applications. Electrical Insulation: Potting materials have excellent dielectric properties that prevent arcing, short circuits, and other electrical faults. By insulating components from each other and from the surrounding environment, potting materials improve the safety and reliability of electronic assemblies. Thermal Management: Many electronic devices generate heat during operation. Potting materials with good thermal conductivity help dissipate the heat, prevent overheating and maintain optimal performance. This thermal management capability is critical for power electronics, LED lighting and other high-power applications. Types of potting materials The choice of potting material depends on the specific requirements of the application. Here are some of the most commonly used types: Epoxy Resins Description: Epoxies…

How many types of industrial epoxy adhesives are there? How to choose the right epoxy adhesive?

2024-08-26

The electronics industry is a rapidly evolving industry, driven by the need for smaller, more powerful, and more reliable devices that continue to drive innovation. One of the key materials driving advancements in the electronics manufacturing industry is epoxy adhesives. Industrial epoxy adhesives have excellent mechanical properties, thermal stability, and electrical insulation properties, making them indispensable in the production and assembly of electronic components. This article by Elaplus Materials takes an in-depth look at the various aspects of industrial epoxy adhesives used in electronics, exploring their types, applications, advantages, and future trends. Types of Industrial Epoxy Adhesives for Electronics Epoxy adhesives are widely used and can be formulated to meet the specific requirements of electronic applications. The main types of epoxy adhesives used in the electronics industry include: One-Part Epoxy Adhesives One-part epoxy adhesives are pre-mixed and ready to use, requiring no additional mixing prior to use. These adhesives cure when heated, making them ideal for automated production processes where curing conditions can be precisely controlled. They have excellent bond strength and are commonly used in bonding and sealing applications for electronic devices. Two-part epoxy adhesives Two-component epoxy adhesives consist of a resin and a hardener that must be mixed before use. The adhesive cures at room temperature or can be accelerated by heat. Two-component epoxies are known for their strong bonding abilities and versatility, as they can be tailored to specific applications by adjusting the mix ratio or adding fillers and modifiers. Thermally Conductive Epoxy Adhesives Thermal conductive epoxy adhesives are formulated with thermally conductive fillers such as aluminum oxide or boron nitride. These adhesives are critical for dissipating heat from electronic devices, preventing overheating and ensuring reliable performance. They are commonly used in heat sinks, LED lighting, and power electronics applications. UV-Cure Epoxy Adhesives UV-curable epoxy adhesives cure quickly…

What is a thyristor? Thyristor encapsulation method and adhesive solution

2024-08-26

What is a thyristor? What does a thyristor do? Thyristor, commonly known as silicon controlled rectifier (SCR), is a very important electronic component, which is widely used in many fields. Thyristor is a semi-controlled power electronic device with two triggering modes: current control and voltage control. Its appearance has greatly promoted the development of power electronic technology. Function of thyristor The function of thyristor is very wide, and it can be used in rectification, inversion, chopping, frequency conversion and other applications: In terms of rectification Thyristors can convert AC into DC, and are often used in battery charging, motor control, etc. In terms of inversion Thyristors can convert DC into AC, and are often used in household appliances, electric vehicles, etc. In terms of chopping and frequency conversion Commonly used to adjust the output voltage and frequency of the power supply Thyristor Advantages and Challenges Advantages: high efficiency, high frequency, high reliability, etc. Disadvantages: prone to thermal collapse, imprecise control, etc. To solve these problems, thyristors can with encapsulation. Thyristor with encapsulation can protect the chip, enhance the electrical and thermal performance, and facilitate installation and transportation. Thyristor encapsulation There are three main types of encapsulation: ▶ Metal seal (bolt-shaped, flat-plate-shaped, round-shell-shaped) ▶ Plastic seal (with heat sink and without heat sink) ▶ Ceramic package thyristor Today we mainly learn about ceramic encapsulation thyristors: Ceramic encapsulation adhesive solution Chip potting ELAPLUS SIPA 1878 adhesive provides stress relief, excellent high temperature electrical insulation and mechanical strength, and can effectively prevent environmental damage to sensitive chips. Thermal Management SIPA 1921 thermally conductive silicone provides strong bonding capabilities and is used for bonding the heat sink to the housing, and the ceramic substrate to the heat sink, ensuring efficient heat dissipation and reducing the risk of thermal collapse Terminal potting It is potted…

Rectifier bridge terminal potting glue solution

2024-08-23

Rectifier bridge terminals are in power electronic systems and usually work in high current and high temperature environments. They are easily affected by external environments such as moisture, dust, vibration and thermal cycles. In order to improve the service life and reliability of the rectifier bridge, materials with good electrical insulation performance, thermal stability and mechanical strength are required for potting. What are the benefits of potting the rectifier bridge terminals? The main purpose of potting the rectifier bridge terminals is to enhance their reliability and stability in harsh environments. First, potting can provide excellent electrical insulation to prevent short circuits or electric shocks caused by high voltage and high current. Secondly, the potting material can effectively isolate the terminals, prevent corrosion from moisture, dust, salt spray and chemicals, and extend the life of the equipment. In addition, potting can also play a heat dissipation role, help manage the heat generated by the rectifier bridge, and avoid overheating problems. It also provides mechanical protection for the terminals to resist vibration, shock and thermal cycling stress, prevent structural damage or loose connections. At the same time, the potting material enhances the environmental adaptability of the equipment, resists extreme temperatures, ultraviolet rays and chemical erosion, and ultimately improves the overall reliability of the rectifier bridge, enabling it to operate stably and for a long time in complex application scenarios. Recommended products EP 6225FR Product features: ▶ 1:1 fast curing epoxy structural adhesive▶ High strength, excellent adhesion▶ Strong adhesion to various substrates Using EP 6225FR epoxy resin material to pottage the rectifier bridge terminals can significantly improve its tolerance in harsh environments, extend product life, and ensure the stability and safety of the rectifier bridge in long-term operation. For more information about semiconductor, rectifier bridge, and IGBT-related glue solutions, please continue to pay attention to…

Potting compounds for electronics products

2024-08-23

Silicone potting compound Compared with other potting materials, silicone offers premium latitude in operating temperatures ranging from -60 °C to 200 °C with short durations (~30 minutes) up to 260 °C without loss of adhesion. Their low modulus also makes them a premiere choice when encapsulating delicate surface mount components. Applications: Advantages: * For more product information (TDS/MSDS),please contact the business personnel. Epoxy potting compound Epoxy Potting Compounds that cure to a tough, durable finish. Epoxies offer premium ruggedization and are unmatched for their chemical resistance and shock protection and have excellent adhesion and temperature resistance.The ordinary temperature resistance is around 100℃, the temperature resistance of heating and curing is about 150℃, and there are also temperatures above 300℃. Applications: Advantages: Polyurethane potting compound Urethane Potting Compounds Polyurethanes offer superior protection against water ingression for submersion applications and retain elasticity at very low temperatures and can be repaired.Excellent flexibility after curing. Advantages:

Thyristor chip potting, thermal conductivity, Encapsulation adhesive application solutions

2024-08-22

Thyristor is a very important electronic component, which is widely used in many fields. Thyristor is a semi-controlled power electronic device with two triggering modes: current control and voltage control. Its appearance has greatly promoted the development of power electronics technology Thyristor has a wide range of functions and can be used for rectification, inversion, chopping, frequency conversion and other applications: In rectification, thyristor can convert AC into DC, which is often used in battery charging, motor control and other aspects. In inversion, thyristor can convert DC into AC, which is often used in household appliances, electric vehicles and other aspects In addition, thyristor can also be used in chopping and frequency conversion applications, and is often used to adjust the output voltage and frequency of power supply. The advantages of thyristor are its high efficiency, high frequency, high reliability, etc. But there are also some disadvantages, such as easy thermal collapse and imprecise control. Adhesive solutions from Elaplus To meet these challenges, Elaplus Materials has launched a series of specially designed adhesive solutions to help improve the stability and performance of power equipment. In terms of chip potting protection, SIPA 8708 adhesive has excellent heat resistance and mechanical strength, which can effectively prevent environmental damage to sensitive chips. In terms of heat dissipation management, SIPC 9446 and SIPC 9445 provide strong bonding capabilities, which are used for bonding the heat sink to the housing, and the ceramic substrate to the heat sink, respectively, to ensure efficient heat dissipation and reduce the risk of thermal collapse. In addition, the terminal potting and fixing solution EP 6225FR has excellent flame retardancy and electrical insulation properties, ensuring the safe operation of the equipment in a high-voltage environment. These adhesive solutions not only extend the service life of power equipment, but also greatly…

Semiconductor adhesive | Tantalum capacitor adhesive application solutions

2024-08-22

Solid tantalum capacitors are one of the most popular surface mount capacitors in consumer electronics, automotive, aerospace and medical equipment. They are widely used due to their high performance and miniaturization. History of Tantalum Capacitors The concept of tantalum capacitors dates back to the 1950s, when Bell Labs invented the technology to develop a compact capacitor for transistors. The unique structure of tantalum capacitors utilizes sponge-like tantalum material to greatly increase the surface area, thereby providing a higher capacitance density than other technologies. This innovation greatly improved the miniaturization of electronic devices. Basic Structure of Tantalum Capacitors Tantalum capacitors are electrolytic capacitors, so they are polar, meaning that current can only flow from the positive electrode (anode) to the negative electrode (cathode). The core structure of a tantalum capacitor consists of three main parts: anode, dielectric, and cathode. Anode: Usually made of high-purity tantalum powder, it is pressed and sintered into a sponge-like structure, which greatly increases the effective surface area. In traditional designs, the anode is connected to the circuit through a tantalum wire. Dielectric: A layer of tantalum pentoxide (Ta2O5) is formed on the surface of the anode, which serves as a dielectric layer. Cathode: In traditional solid tantalum capacitors, the cathode material is manganese dioxide (MnO2), which is then coated with materials such as carbon and silver to establish an electrical connection to the circuit. Challenges and Solutions for Tantalum Capacitors These devices require tantalum capacitors to have high reliability, stability, and miniaturization, and to operate stably under high temperatures, harsh mechanical environments, and long-term working conditions. In order to ensure the structural integrity and electrical performance of tantalum capacitors during assembly and operation, the selection of growth barrier glue and die attach glue is critical. SIPA 8708 is a growth barrier adhesive specifically used inside tantalum…

Induction gate electromagnetic induction coil potting solution

2024-08-22

As the core component of modern intelligent access control system, induction gate is widely used in office buildings, residential areas, factories and transportation hubs. In order to ensure the long-term stable operation of the induction gate, especially in various complex environments such as high temperature, high humidity or frequent mechanical vibration, high-performance potting glue must be used for protection. The potting glue not only needs to have excellent waterproof, dustproof and corrosion resistance, but also needs to provide excellent electrical insulation and mechanical stress relief functions to extend the product life. Potting material requirements: Waterproof: The induction gate needs to be exposed to the outdoors and be affected by rain, moisture, etc. for a long time. Therefore, the potting glue needs to have a protection level of IP67 or higher to ensure that the electronic components are not corroded by moisture. Weather resistance: Adaptability to different environmental conditions, including high temperature, low temperature, UV rays, etc. The material must maintain stable performance in the temperature range of -40°C to +120°C. Electrical insulation: To ensure the safety of circuit components in long-term operation and avoid the risk of short circuit or electric shock, the electrical insulation should reach 10^14 Ω·cm. Mechanical properties: Good impact resistance and vibration resistance to ensure that the equipment will not be damaged under daily use and external impact. Environmental requirements: Materials must comply with environmental standards such as RoHS and REACH. Glue recommendation

Flood light housing bonding, aluminum substrate heat dissipation adhesive application solutions

2024-08-21

In modern lighting equipment, floodlights are widely used in architectural lighting, stage lighting, stadiums, industrial plants and other scenarios due to their high brightness, wide-angle coverage and efficient energy utilization. However, in actual application, floodlights face harsh environmental tests, such as high temperature, low temperature, humidity, strong ultraviolet radiation, etc. Therefore, choosing the right electronic adhesive becomes a key factor in ensuring the reliability and durability of floodlights. In the design and production of floodlights, bonding and heat dissipation are two crucial links. The stable bonding of the glass cover directly affects the sealing and safety of the floodlight, while the efficient heat dissipation of the aluminum substrate is related to the working stability and life of the lamp. In the face of these challenges, Shanghai Elaplus has developed two high-performance adhesive products designed specifically for floodlights: 9339 silicone adhesive and SIGR 1125 thermal grease, providing all-round technical support and guarantee for your products. Elaplus Floodlight Adhesive Application Solution Elaplus Materials is committed to providing customers with high-quality electronic adhesive solutions. Through 9339 silicone adhesive and SIGR 1125 thermal grease, we can provide comprehensive protection and support for your floodlight products. For more adhesive application solutions for the lighting industry, please continue to pay attention to Elaplus Materials’ official website.