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This IT-158 laminate and prepreg is an exceptional choice for a wide range of applications. Below, we will systematically analyze its various uses and provide detailed reasons why this product is highly suitable for these purposes.
In this article, we’ll discuss what really characterizes the IT-158 laminates. The relevant information is available for pcb design engineers to refer to in the selection of materials, And you can also call QFPCB to discuss. QFPCB offers the best services when it comes to the middle Tg circuit board, so please feel free to contact us.
What is the IT-158 PCB Material?
IT-158 is classified as a middle Tg prepreg with a glass transition temperature of 155°C. The glass transition temperature (Tg) is a critical parameter for assessing the rigidity of polymer-based materials, typically expressed in degrees Celsius. A higher Tg value indicates greater material strength and durability. The prepreg has been specifically engineered for use as a solder paste stencil or as a component holder, demonstrating excellent performance in both roles.
It is a prepreg or laminate utilized in the manufacturing of printed circuit boards. It is a middle Tg multifunctional-filled epoxy that offers high thermal reliability and outstanding CAF resistance. IT-158 is compatible with most lead free solders, including those composed of tin-silver, tin-copper, tin-copper-iron, tin-zinc, and silver brazing alloys. When used in conjunction with solder pastes made from these materials, it exhibits superior adhesion to copper surfaces.
It is a robust, flexible epoxy resin that can be customized with various additives to meet the specific requirements of diverse applications. This material exemplifies the growing importance of carbon fiber composites in aerospace applications, influencing the design of aircraft and other advanced systems. Its excellent electrical properties and high thermal resistance make it an ideal material for industries such as automotive electronics, aerospace and defense, industrial equipment, medical devices, power generation and distribution systems.
IT-158 PCB Material Data Sheet
Features of The IT-158 PCB Material
Dielectric Constant (Dk)
With a dielectric constant (around 4.3 @ 1 GHz), The Dielectric Constant (Dk) of the material is a measure of its ability to store electrical energy in a capacitor-like manner. IT-158 laminates offer a stable Dk, this property measures a material’s ability to store some electrical energy in a given electric field.
Dissipation Factor (Df)
With a dissipation factor (0.016 @ 1 GHz) translates to reduced dielectric loss, ensuring minimal heat generation during signal transmission, which is crucial for applications that require efficient performance in thermally challenging environments.
Mid-Tg value
The glass transition temperature describes how a PCB material transforms from a solid state to a molten state. IT-158 features a glass transition temperature of 155 degree Celsius. Therefore, this PCB material will be unstable once it works beyond 155 degrees Celsius. This Tg value helps to determine the limit of temperature operation.
Through-Hole Reliability
The resin/glass interface in IT-158 is optimized for strong adhesion, delivering excellent through-hole reliability over multiple thermal cycles. This minimizes barrel cracking and pad lift during assembly and rework.
Good in anti-CAF performance
The PCB material also has excellent anti-CAF performance. The laminate’s chemistry and controlled glass treatment provide excellent resistance to CAF, reducing the risk of dendritic growths that can cause shorts in high-humidity or high-bias conditions.
Lead-Free Assembly Compatibility
This laminate feature lead-free compatibility. This means that it is compatible with lead-free laminate materials. IT-158 endures peak reflow temperatures in excess of 260 °C without degradation, ensuring consistent performance in RoHS-compliant manufacturing.
High thermal reliability
This laminate is thermally stable when used at various temperatures. Thermal reliability refers to the ability of a material to remain stable when exposed to high temperatures. IT-158 features great thermal reliability. Therefore, this laminate is ideal for use in varying temperature ranges.
What are The Applications of IT-158 PCB Material?
IT-158’s combination of electrical performance and reliability makes it an ideal substrate for a variety of advanced electronic systems, including:
Automotive Electronics
Engine control units (ECUs), infotainment systems, and advanced driver-assistance systems (ADAS) benefit from IT-158’s thermal stability and CAF resistance, ensuring long-term reliability under vibration and temperature extremes.
PC and Notebook Boards
From motherboards to GPU cards, IT-158 supports the high-speed data transfer and compact designs needed in consumer computing devices. Its low Dk/Df values and good workability make it ideal for next-generation PCs and notebooks.
Game Consoles & Handheld Gaming Devices
Gaming consoles require materials that can handle high-performance processors, graphics chips, and heat-intensive operations. IT-158 offers the signal integrity and thermal endurance needed for these demanding applications.
Networking Equipment
Routers, switches, and transceiver modules demand consistent impedance control and low loss at multi-gigabit data rates, which IT-158 readily provides through its tailored dielectric properties.
Heavy Copper Applications
It is also well-suited for heavy copper PCBs used in power supplies, motor controllers, and industrial equipment. Its thermal robustness and excellent current-carrying capability ensure safe and efficient operation under high-load conditions.
Why Choose IT-158 PCB Material For Your PCB?
IT-158 is an industry-standard material widely utilized in the PCB manufacturing process. If you are seeking a high quality product that aligns with your technical specifications, IT-158 represents an optimal choice. It is available in various thicknesses to accommodate diverse project requirements.
It has been a trusted prepreg material in the PCB industry for many years, favored by both professionals and enthusiasts. This is why we have selected it as our preferred laminate material. The rationale behind this decision is straightforward: IT-158 offers a variety of thickness options, providing flexibility for any project type. Additionally, its smooth texture ensures durability and resistance to fraying or wear, even when used in older projects.
Furthermore, It is easy to cut and drill, making it accessible for beginners in electronics while still meeting the demands of experienced users. This IT-158 PCB material is highly versatile and suitable for a wide range of applications. Below, we will detail its various uses and explain why IT-158 is an exceptional choice for your projects.
IT-158 laminates represent a fusion of cutting-edge material science and practical engineering. Their ability to balance electrical performance, thermal resilience, and manufacturing efficiency makes them indispensable for next-generation electronics. If you have any further questions, please feel free to leave a comment below or contact QFPCB by email ([email protected]).
