N4000-29 is a high-Tg laminate specifically engineered to meet these requirements. With a strong balance of electrical, thermal, and mechanical performance, it is a trusted choice for advanced printed wiring board designs across multiple industries.
In this article, we’ll discuss what really characterizes the Nelco N4000-29 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 high-Tg circuit boards, so please feel free to contact us.
What is The N4000-29 High-Tg Epoxy Laminate?
N4000-29 is an advanced, lead free, low CTE, high Tg (185°C by DSC) multifunctional epoxy PCB material with a high Tg, excellent thermal stability and good moisture resistance. Its dielectric constant (DK 4.16 @ 10GHz) and dissipation factor (Df 0.017 @ 10GHz) remain stable across a wide frequency range, supporting signal integrity in high speed systems. It has been designed for use both standard and high performance, lead free applications including lead free assemblies, large format backplanes, tight tolerance via to via, High I/O count BGA, extreme layer count multilayers, lead free DCA, high temperature underhood automotive, telecommunications infrastructure and sophisticated data storage.
N4000-29 also exhibits low Z-axis expansion, which significantly improves through hole reliability, especially in high layer count designs. The laminate offers exceptional peel strength and has been proven to withstand multiple reflow excursions and repair operations without compromising performance. Reliability is further enhanced by its excellent CAF resistance and good moisture resistance, making it suitable for harsh environments. Additionally, it is fully lead free assembly compatible and is designed for seamless integration with Meteorwave products, expanding its flexibility in hybrid stack-up designs.
N4000-29 High-Tg Laminate Epoxy Data Sheet
The Features of N4000-29 High-Tg Epoxy Laminate
High Glass Transition Temperature (Tg 185°C by DSC)
N4000-29 offers a Tg of 185°C measured by DSC, ensuring structural integrity and dimensional stability during lead free reflow and complex assembly processes. This high Tg ensures outstanding thermal performance, maintaining structural integrity during high temperature assembly and operation.
Dielectric Constant (Dk)
With a dielectric constant (DK 4.16 @ 10GHz), the N4000-29 material provides consistent electrical properties, essential for maintaining signal integrity in High performance PCB designs. The laminate 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 (DF 0.017 @ 10GHz) translates to reduced dielectric loss, ensuring minimal heat generation during signal transmission, which are essential for maintaining signal integrity and low power loss in both digital and analog circuits.
Excellent Thermal Stability and Low Z-Axis Expansion
The material provides superior thermal stability and low Z-axis expansion, reducing stress on plated through holes (PTHs) and enhancing interconnect reliability in multilayer boards. These properties minimize the risk of via cracking and delamination, enhancing the reliability of plated through holes, especially in multilayer board.
Exceptional Peel Strength
This laminate offers strong bond durability, which is critical for maintaining copper adhesion under thermal and mechanical stress. The features high peel strength between copper and dielectric, maintaining bond integrity even after repeated thermal excursions and mechanical stress.
Resistance to Multiple Reflow Cycles and Repairs
The N4000-29 formulation can withstand numerous lead free soldering and rework operations without degradation. Designed for durability, this laminate can endure multiple reflow cycles and repair operations without delamination or performance degradation.
Excellent CAF Resistance and Moisture Resistance
This material is designed to prevent conductive anodic filamentation and resist moisture absorption. It demonstrates excellent resistance to Conductive Anodic Filamentation (CAF) and good moisture resistance, ensuring long term reliability in harsh environments.
Lead-Free Assembly Compatibility
The N4000-29 series supports lead free soldering processes without compromising performance. Fully compatible with lead free soldering processes, it supports RoHS compliant manufacturing and high temperature assembly requirements.
The Applications of N4000-29 High-Tg Epoxy Laminate
The robust feature set of the N4000-29 makes it ideally suited for a wide range of high-performance applications, including:
Lead-Free Assembly Structures
The high Tg and thermal resilience of N4000-29 make it a cornerstone for any PCB requiring compliant, reliable lead free assembly. Ideal for complex multilayer boards requiring compliance with environmental regulations and high thermal reliability.
Large Format Backplanes
For complex server and networking hardware, the dimensional stability and electrical consistency of N4000-29 are invaluable. Used in telecom and datacom backplanes, where dimensional stability and via reliability are critical.
High-Temp Underhood Automotive Electronics
The ability of the N4000-29 material to endure extreme temperatures and thermal cycling makes it perfect for automotive applications Suitable for automotive underhood electronics, such as engine control units (ECUs), exposed to elevated operating temperatures.
Telecommunications Infrastructure
Base stations and network equipment benefit from the proven reliability and stable electrical properties of N4000-29. Deployed in routers, switches, and base stations, where thermal cycling resistance and long term durability are essential.
Data Storage Systems
The PCB laminate supports the high speed data integrity and thermal demands of modern storage solutions. Applied in enterprise storage systems requiring stable performance under continuous operation and thermal load.
Manufacturing Advantages of N4000-29 High-Tg Epoxy Laminate
From a manufacturing perspective, N4000-29 provides several clear benefits. Its high Tg and excellent thermal stability allow it to endure the rigors of multiple reflow excursions and repair operations without degradation. The low Z-axis expansion directly improves through hole reliability, making it an excellent choice for high layer count assemblies.
Furthermore, N4000-29 is both cost effective and readily available, enabling manufacturers to balance performance with production efficiency. This makes it a practical choice for companies looking to meet the demands of modern lead free assembly processes while maintaining high levels of reliability.
Ultimately, N4000-29 stands out as a high-Tg, lead free laminate designed to deliver outstanding thermal stability, mechanical reliability, and electrical consistency. By choosing N4000-29 Epoxy laminate, manufacturers can achieve superior performance, enhanced safety, and extended product lifetimes.
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