In the relentless pursuit of faster, denser, and more reliable electronics, the foundation of your printed circuit board (PCB) is paramount. Isola offers a product line of polyimide based prepreg (P26) and core material (P96) for high temperature printed circuit application.
In this article, we’ll discuss what really characterizes the Isola P96 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 temperature circuit board, so please feel free to contact us.

What is The Isola P96 PCB Material?
The products utilize a polyimide and thermoplastic blend resin, fully cured without the use of MDA . This results in a polymer with a high Tg without the characteristic difficulties of brittleness and low initial bond strength associated with traditional thermoset polyimides. With an exceptional glass transition temperature (Tg 260°C), Isola P96 delivers unmatched thermal stability, making it a top tier solution for applications requiring sustained operation at elevated temperatures and compatibility with multiple lead free reflow processes. Isola P96 offers a stable dielectric constant (Dk 3.76 @1GHz) and a low dissipation factor (Df 0.017 @1GHz), ensuring minimal heat generation during signal transmission, which is crucial for applications that require efficient performance in thermally challenging environments.
Despite its high Tg, Isola P96 exhibits good flow and fill characteristics during lamination. This ensures reliable void free bonding between layers and excellent penetration into complex multilayer board structures. Isola P96 is fully RoHS Compliant and Lead free assembly compatible, meeting global environmental regulations. Its flammability rating meets the stringent UL 94V-0 standard, providing critical fire safety.
These products consist of a flame resistant, polyimide resin system suitable for military, commercial or industrial electronic applications requiring superior performance and the utmost in thermal properties. Whether your application demands survival in high temperature industrial settings, aerospace extremes, or defense grade reliability, Isola P96 provides the thermal resilience, dimensional stability, and long term durability required for success.
Isola P96 PCB Material Data Sheet

The Features of Isola P96 PCB Material
High Glass Transition Temperature (Tg 260°C)
The Isola P96 laminate boasts a remarkable Tg of 260°C, one of the highest in the industry. This extreme thermal resilience ensures exceptional dimensional stability and mechanical integrity even under prolonged exposure to high temperatures, making Isola P96 ideal for mission critical and high reliability systems.
Dielectric Constant (Dk)
With a dielectric constant (DK 3.76 @ 1GHz), the Dielectric Constant (Dk) of the material is a measure of its ability to store electrical energy in a capacitor like manner. Isola P96 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 (DF 0.017 @ 1GHz) 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.
Good Flow and Fill Characteristics
The Isola P96 resin system provides excellent flow and fill, ensuring reliable resin distribution in complex, multi-layer PCB stack-ups. This is particularly beneficial for blind and buried vias and other advanced interconnect structures, minimizing voids and enhancing structural integrity.
Multiple Reflow Capable
Engineered to withstand multiple reflow cycles, P96 maintains its performance and structural stability through repeated thermal excursions, a critical requirement for complex assemblies and rework scenarios.
Lead-Free Assembly Compatible
It is fully RoHS Compliant and Lead free assembly compatible, meeting global environmental regulations. Its flammability rating meets the stringent UL 94V-0 standard, providing critical fire safety.
Flammability: Meets UL 94V-0
It meets the stringent UL 94V-0 flammability standard, ensuring high resistance to ignition and flame propagation, a critical safety requirement for electronic equipment in commercial, industrial, and consumer applications.
The Applications of Isola P96 Laminate System
Isola P96 is specifically designed for industries where thermal performance and reliability are non-negotiable:
High-Temperature Environments
Isola P96 is the material of choice for applications where operating temperatures exceed the limits of standard FR-4. This includes downhole drilling equipment, engine control units, and power electronics in electric vehicles.
High Thermal Reliability
Used in systems requiring long term reliability under thermal stress, such as industrial automation, power conversion, and high power LED systems. The P96’s ability to resist thermal degradation ensures extended product lifespan.
Aerospace & Defense
In aerospace and defense systems, where failure is not an option, it is trusted for avionics, radar systems, satellite communications, and other mission critical electronics. Its exceptional thermal stability, low outgassing, and high reliability make it ideal for extreme conditions in space and military platforms.
Manufacturing Advantages of Isola P96 High Temperature Laminates
Beyond its raw performance specs, Isola P96 delivers significant benefits on the factory floor and throughout the product lifecycle:
Excellent Dimensional Stability and Through-Hole Reliability
The combination of ultra-high Tg (260°C) and low coefficient of thermal expansion (CTE) ensures minimal warpage and superior plated through hole (PTH) reliability, even after multiple high temperature reflow cycles. This results in higher manufacturing yields and reduced field failures.
Compatibility with Existing Manufacturing Processes
Despite its advanced performance, it is designed for compatibility with standard PCB fabrication processes. It can be processed using conventional equipment and techniques, minimizing the need for costly process modifications.
Cost-Effective and Readily Available
While delivering performance on par with exotic materials, Isola P96 offers a cost effective solution for high reliability applications. Its ready availability from Isola and global distributors supports both prototyping and high volume production, making it a practical and scalable choice.
Ultimately, Isola P96 High temperature laminates represent the pinnacle of thermal performance in PCB materials. With a Tg of 260°C, excellent electrical properties, good flow and fill, multiple reflow capability, RoHS compliance, and UL 94V-0 flammability rating, it is engineered to excel in the harshest environments. By choosing Isola P96 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]).











