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Nelco N4000-29

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Nelco N4000-29 PCB Board

As a leading PCB manufacturer, we understand the critical role that materials play in achieving high-performance and reliable printed circuit boards. One such exceptional material that we utilize is Nelco N4000-29. With its advanced properties and exceptional electrical performance, N4000-29 offers a multitude of benefits for various PCB applications. In this article, we will delve into the features and advantages of N4000-29, highlighting its contribution to superior PCB fabrication.

Introduction to Nelco N4000-29 Material

Nelco N4000-29 is a high-performance PCB (Printed Circuit Board) material developed by Nelco Products, a leading manufacturer of advanced electronic materials. N4000-29 is designed to meet the demanding requirements of high-speed digital and RF/microwave applications.

Feature and Characteristics For Nelco N4000-29

Here are some key features and characteristics of Nelco N4000-29:

The Nelco N4000-29 is a lead-free multifunctional epoxy PCB material known for its exceptional thermal stability and high glass transition temperature. This material also offers a buried capacitor solution and is provided by Jarnistech PCB & Assembly, which enhances its thermal and moisture resistance and wire bonding abilities.

The N4000-13 EP is a high-speed, low-loss PCB laminate with outstanding CAF resistance and is compatible with lead-free assembly. It is particularly well-suited for complex multilayer PWB designs.

With a glass transition temperature of 185 degrees Celsius, the N4000-29 is an advanced lead-free dielectric substrate that is suitable for lead-free and halogen-free applications. It also offers exceptional thermal and electrical properties, making it a preferred choice for high-speed, low-loss designs.

This laminate has a high CTE, making it suitable for demanding lead-free applications and high-temperature assemblies. Its controlled dielectric constant (Dg = 4.5) is essential for high-temperature assemblies, and it also exhibits superior signal speed and a low dissipation factor, further enhancing its electrical properties.

Advantages of Nelco N4000-29 PCB Materials

There are several advantages of using Nelco N4000-29 PCB materials:

1. Excellent thermal stability: The N4000-29 material has exceptional thermal stability, allowing it to endure high temperatures without compromising its performance. This makes it suitable for applications that require reliable operation under demanding thermal conditions.

2. High glass transition temperature (Tg): The N4000-29 material has a high Tg of 185 degrees Celsius. This means that it can withstand higher temperatures before it starts to soften or lose its mechanical properties. This makes it ideal for high-temperature applications, such as those involving lead-free assembly processes.

3. Lead-free compatibility: The N4000-29 is a lead-free epoxy PCB material. This is important as the electronics industry has shifted towards lead-free manufacturing to comply with environmental regulations. By using lead-free materials, manufacturers can ensure compliance while maintaining high-quality and reliable products.

4. Buried capacitor solution: The N4000-29 material is available as a buried capacitor solution. This means that it can be used to integrate capacitors directly into the PCB, eliminating the need for additional surface-mounted components. This can lead to a more compact and efficient design, reducing overall size and improving performance.

5. Enhanced thermal and moisture resistance: Rayming PCB & Assembly offers improved thermal and moisture resistance for the N4000-29 material. This ensures that the PCB can withstand harsh environmental conditions, such as high humidity or temperature variations, without degradation or failure.

6. Enhanced wire bonding abilities: The N4000-29 material offers enhanced wire bonding abilities. This means that it can provide reliable and robust connections between components, improving the overall performance and longevity of the PCB assembly.

Overall, the Nelco N4000-29 PCB material offers excellent thermal stability, high Tg, lead-free compatibility, a buried capacitor solution, enhanced thermal and moisture resistance, and improved wire bonding abilities. These advantages make it a preferred choice for demanding applications that require reliable and high-performance PCBs.

What Technologies When Use N4000-29 In PCB Fabrication?

When using Nelco N4000-29 in PCB fabrication, several technologies and processes can be employed to ensure the successful integration of the material. Here are some common technologies and techniques used with N4000-29:

1. Multilayer PCB Fabrication: N4000-29 is often used in the fabrication of multilayer PCBs, which consist of multiple layers of copper traces and insulating material sandwiched together. The material’s high-speed performance and low loss make it suitable for high-density interconnects and signal integrity-sensitive applications.

2. High-Speed Design Considerations: N4000-29’s electrical properties make it suitable for high-speed designs. When using this material, it’s important to consider factors such as controlled impedance, signal integrity, and transmission line effects. Design techniques like controlled impedance routing, proper termination, and signal integrity simulations can be employed to optimize the performance of high-speed signals.

3. Surface Mount Technology (SMT): N4000-29 can be used in surface mount technology, where components are mounted directly onto the PCB surface. SMT allows for smaller component sizes, higher component densities, and improved manufacturing efficiency. The material’s thermal stability is beneficial in the SMT process, which involves soldering components onto the PCB.

4. Copper Plating and Etching: Copper plating and etching processes are commonly used in PCB fabrication. Copper is selectively plated onto the N4000-29 material to create the desired circuit patterns, and excess copper is etched away to form the traces and pads. Proper copper plating and etching techniques ensure the accuracy and integrity of the PCB design.

5. Via Formation: Vias are used to establish electrical connections between different layers of a multilayer PCB. Various via formation techniques, such as through-hole plating and laser drilling, can be employed with N4000-29. These techniques ensure reliable and low-loss connections between the layers.

6. Solder Mask Application: Solder mask is applied to the PCB surface to protect the copper traces and prevent solder bridges during the assembly process. Proper application of solder mask ensures the integrity of the PCB design and protects the N4000-29 material from potential damage.

7. Testing and Inspection: After PCB fabrication, testing and inspection processes are conducted to ensure the quality and functionality of the boards. This can include electrical testing, such as continuity testing and functional testing, as well as visual inspection to identify any manufacturing defects or anomalies.

How to Quality Control and Testing Procedures?

Quality control and testing procedures for PCB materials like Nelco N4000-29 involve various steps to ensure the material meets the required specifications and performance standards. Here are some common quality control and testing procedures for PCB materials:

1.Incoming Inspection:

When the N4000-29 material arrives at the manufacturing facility, it undergoes an incoming inspection. This involves visually inspecting the material for any visible defects, such as scratches, delamination, or discoloration. The material’s documentation and packaging are also verified to ensure it matches the expected specifications.

2.Dimensional Verification:

The dimensions of the N4000-29 material are checked to ensure they meet the specified thickness and size requirements. This can be done using precision measuring tools, such as calipers or micrometers.

3.Dielectric Constant and Loss Tangent Measurement:

The dielectric constant (Dk) and loss tangent (Df) of the N4000-29 material are important electrical properties that determine its performance. These properties are typically measured using specialized equipment, such as a vector network analyzer (VNA) or a dielectric constant tester. The measured values are compared against the specified range to ensure they fall within acceptable limits.

4.Thermal Stability Testing:

N4000-29’s thermal stability is evaluated by subjecting the material to elevated temperatures for a specified duration. This can be done using a thermal chamber or oven. The material’s dimensional stability and electrical properties are monitored during and after the thermal stress to ensure they remain within acceptable limits.

5.Signal Integrity Testing:

Signal integrity testing involves evaluating the N4000-29 material’s performance in transmitting high-speed signals without significant loss or distortion. This can be done by fabricating test PCBs using the material and conducting electrical measurements, such as eye diagram analysis, insertion loss, and impedance testing. The measured results are compared against the desired performance criteria.

6.Mechanical Testing:

Mechanical properties of the N4000-29 material, such as tensile strength, flexural strength, and peel strength, may also be evaluated. These tests help assess the material’s durability and resistance to mechanical stress during PCB fabrication and assembly processes.

7.Environmental Testing:

N4000-29 may undergo environmental testing to evaluate its performance under various conditions. This can include exposure to humidity, temperature cycling, thermal shock, and chemical resistance tests to ensure the material can withstand the intended operating environment.

Industries and Applications where Nelco N4000-29 is Commonly Used

Nelco N4000-29 is a versatile PCB material that finds applications in various industries where high-speed digital and RF/microwave performance is required. Some common industries and applications where Nelco N4000-29 is commonly used include:


N4000-29 is widely used in telecommunications equipment, such as base stations, routers, switches, and high-speed data transmission systems. Its low loss and excellent signal integrity make it suitable for high-frequency communication applications.

Aerospace and Defense:

The aerospace and defense industries often require PCB materials with exceptional performance in demanding environments. N4000-29’s thermal stability, low loss, and reliability make it suitable for applications such as radar systems, satellite communications, avionics, and military electronics.


With the increasing complexity of automotive electronics, PCB materials like N4000-29 are utilized in advanced driver assistance systems (ADAS), infotainment systems, engine control units (ECUs), and other high-speed automotive applications. Its high-speed performance and thermal stability are beneficial in automotive electronics.

Industrial Automation:

N4000-29 is employed in industrial automation equipment, including robotics, machine control systems, and factory automation. Its high-speed capabilities and stability in harsh industrial environments make it a preferred choice.

Medical Devices:

Medical equipment often requires high-speed and reliable PCB materials. N4000-29 is used in medical devices such as diagnostic equipment, imaging systems, patient monitoring systems, and surgical instruments, where signal integrity and performance are crucial.

Consumer Electronics:

N4000-29 can be found in various consumer electronic devices, such as high-speed routers, smartphones, tablets, gaming consoles, and high-performance computing systems. Its low loss and high-speed capabilities contribute to improved device performance.


Nelco N4000-29 PCB material stands out as a high-performance solution for demanding PCB applications. Its exceptional electrical properties, thermal stability, and mechanical strength make it an ideal choice for high-speed designs, multilayer PCBs, and surface mount technology. By incorporating N4000-29 into our PCB fabrication processes, we ensure that our customers receive high-quality, reliable, and high-performance boards that meet their specific requirements.

As a trusted PCB manufacturer, we recognize the importance of selecting the right materials to achieve optimal results. Nelco N4000-29 has proven to be a valuable asset in our pursuit of delivering superior PCB solutions. With its outstanding performance characteristics and our expertise in leveraging its potential, we continue to provide our customers with cutting-edge PCBs that exceed expectations.

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