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In the fast paced world of compact, high performance electronics, PCB materials must deliver exceptional reliability, signal integrity, and manufacturing efficiency. Doosan DS-7402HD halogen free laminates rise to this challenge, offering a tailored solution for cutting edge mobile and consumer devices.
In this article, we’ll discuss what really characterizes the DS-7402HD laminate. 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 IC Substrate, so please feel free to contact us.
What is the DS-7402HD pcb material?
DS-7402HD laminate is a halogen free PCB laminate, widely used as the primary raw material in PCB fabrication. It is specifically designed for high performance applications that demand excellent thermal and mechanical stability. One of its standout features is its exceptionally high glass transition temperature (Tg) of 180°C, which ensures outstanding dimensional stability and minimal warpage under elevated temperatures.
The DS-7402HD laminate demonstrates a dielectric constant of 3.5 at 1 GHz. The frequency significantly influences this value, with the dielectric constant decreasing as the frequency increases. A dissipation factor of 0.007 at 1 GHz implies reduced dielectric loss, ensuring minimal heat generation during signal transmission. This is of critical importance for applications demanding efficient performance in thermally challenging environments.
The DS-7402HD offers a comprehensive profile of excellent thermal properties. This includes a low and controlled Coefficient of Thermal Expansion (CTE) that is closely matched to copper. This CTE matching is vital as it prevents stress from building up at the copper to laminate interface during thermal cycling, which can cause barrel cracks in vias and lead to interconnection failures. And the excellent Anti-CAF performance allows designers to place plated through-holes closer together without fear of failure, enabling more compact and complex board designs.
The DS-7402HD PCB material data sheet
The features of the DS-7402HD PCB material
Glass Transition Temperature (Tg)
DS-7402HD laminate features a high glass transition temperature of 180 degree celsius, this is very high. ensuring dimensional stability and resistance to thermal deformation during lead free soldering processes and under elevated operating conditions.
High Decomposition Temperature (Td)
With a high Decomposition Temperature (Td 380°C), DS-7402HD laminate exhibits outstanding resistance to thermal degradation. This provides a crucial safety margin during soldering and ensures long term reliability in high temperature operating environments.
Dielectric Constant (Dk)
With a dielectric constant (3.5 @1GHz), the Dielectric Constant (Dk) of DS-7402HD laminate is a measure of its ability to store electrical energy in a capacitor like manner. The material maintains a stable dielectric constant, which is essential for high quality pcb boards.
Dissipation Factor (Df)
With a dissipation factor (0.007 @1GHz), it has a low Df, which minimizes energy losses as signals travel through the PCB. A lower Df translates to less signal loss, which is paramount for maintaining signal strength in high speed applications.
Anti-CAF Property
DS-7402HD is designed with a strong anti-CAF property, preventing the formation of conductive filaments. This is achieved through advanced resin formulations that create a stronger bond between the resin and glass cloth, preventing the pathways that filament growth requires.
Great Thermal Performance
DS-7402HD demonstrates excellent thermal stability, maintaining mechanical and electrical integrity at elevated temperatures. Its low Z-axis coefficient of thermal expansion (CTE) reduces stress on vias and interconnects. Withstands thermal shock and repeated thermal cycling without cracking or delamination.
Halogen, Antimony, and Red Phosphorus Free
The laminate is fully halogen free, antimony free, and red phosphorus free, it contains no antimony or red phosphorus, both of which are associated with environmental and health hazards. These attributes make DS-7402HD compliant with global RoHS directives, enabling manufacturers to meet eco-friendly standards without compromising performance.
UL-94 Flammability Rating
DS-7402HD complies with the UL-94 flammability standard, ensuring safety in end use applications. The UL 94V-0 compliance ensures that laminate meets safety standards for use in consumer electronics, industrial equipment, and data center applications where fire safety is a priority.
What are the applications of the SI10US PCB material?
The versatility of DS-7402HD lies in its ability to combine strong electrical and thermal properties with eco-friendly compliance. This makes it particularly suitable for IC packaging applications, with a primary focus on memory modules.
IC Package – Memory – PC DRAM
DS-7402HD ensures efficient data transmission, supporting the speed requirements of modern computing systems. In PC DRAM packaging, maintaining electrical stability and minimizing signal loss is crucial. Its anti-CAF property further extends reliability, making it a dependable choice for desktop and laptop memory.
IC Package – Memory – Graphic DRAM
DS-7402HD enables stable high speed performance, essential for gaming, video rendering, and AI workloads. Graphics systems demand high performance DRAM with superior bandwidth. With its low Df and stable Dk, it ensures signal integrity, reducing errors in high frequency graphic applications.
Manufacturing advantages of the DS-7402HD PCB material
Beyond its material and application benefits, DS-7402HD provides significant processing advantages that make it appealing for large scale manufacturing.
Similar to FR-4 PCB Processing
It is compatible with standard FR-4 PCB processing techniques, which means no special tooling or new processes are required. This compatibility reduces transition costs for manufacturers while simplifying integration into existing production lines.
Great Mechanical Properties
The material offers excellent mechanical stability, which is crucial for preventing board flexing during assembly and in the final application. This is particularly important for larger substrates. It allows for clean, smear free drilling of small diameter holes, which is essential for creating the microvias and high density interconnects used in advanced IC substrate. The laminate exhibits minimal movement during the thermal cycles of processing, which is critical for maintaining layer to layer alignment in multilayer boards.
Cost-Effective and Readily Available
DS-7402HD strikes an optimal balance between performance and cost, making it an economical choice for mass market applications. Its broad availability ensures supply chain stability, preventing bottlenecks in production schedules. By delivering both performance and affordability, DS-7402HD enables scalable adoption in memory packaging industries.
Ultimately, The DS-7402HD halogen free laminate is a testament to the innovation driving the electronics industry forward. It successfully bridges the gap between the need for exceptional high frequency performance, unwavering reliability under thermal stress, and strict environmental compliance. By choosing DS-7402HD laminate, manufacturers can achieve superior performance, enhanced safety, and extended product lifetimes.
If you have any further questions, please feel free to leave a comment below or contact QFPCB by email ([email protected]).
