IT158: Mid TG, Lead Free and High Reliability


In this article, we’re going to tackle everything about the IT158. We’ll discuss its application and uses characteristics and features, and also its certifications.

Introduction to IT158

Introduction to IT158

This prepreg/laminate is an excellent choice for any application, so we’re going to break down all of those different uses and tell you exactly why this product is such a great fit.

We’ll also dive into some of the characteristics that make it unique and explain why we decided to certify it as lead-free and high-reliability.

What is IT158?

IT158 is a prepreg or laminate used in manufacturing printed circuit boards. The IT158 is a medium Tg multifunctional-filled epoxy. This prepreg or laminate has high thermal reliability and amazing CAF resistance.

IT-158 is a strong, flexible epoxy resin that can be formulated with various additives to meet the specific needs of your application. It exhibits excellent electrical properties and high thermal resistance, making it an ideal choice for use in a variety of applications. It includes automotive electronics, aerospace and defense, industrial equipment, medical devices, power generation and distribution systems.

What is IT158

Middle Tg IT158

Middle Tg IT158

TG (Glass Transition Temperature) is a measure of the rigidity of polymer-based materials. It is usually expressed in pounds per square inch. The higher the TG number, the stronger and more durable the material will be.

The IT158 is a middle Tg prepreg that is within 150 °C. It has a glass transition temperature of 178 °C, and it has a tensile strength of 31 MPa. The IT158 is an example of how the rise of carbon fiber composite materials in aerospace applications is changing the way we design planes and other aircraft.

IT158 Characteristics and Features

IT158 is a highly durable, high-quality material that is resistant to heat and moisture. It has been tested and proven to hold up well under the most extreme conditions. IT158 is a versatile material that can be used in many different industries and applications.

The following are some of the key characteristics of IT158:

Advanced Resin Technology

Resin Technology

Advanced Resin Technology

This technology allows for higher density and improved signal integrity, resulting in a more reliable board that is able to handle more current. This ensures that you get a product that is more durable and resistant to environmental conditions, such as heat, humidity, and moisture.

Lead-Free Assembly Compatible

Lead-Free PCB

Lead-Free Assembly Compatible

This prepreg has been designed for use as a solder paste stencil or as a component holder, and it works well in both applications. The IT158 is compatible with most lead-free solders, including those made with tin-silver, tin-copper, tin-copper-iron, tin-zinc, and silver brazing alloys. It provides excellent adhesion to copper surfaces when used in conjunction with solder pastes made from these materials.

Friendly Processing

The IT158 has several advantages over other types of prepregs because it’s got so many different uses—it will work well as both an insulator and as a conductor in your PCBs which means that you won’t have to worry about running into any problems when trying to make things work properly together on an electronic device.

Good Through-Hole Reliability

Through-Hole PCB

Good Through-Hole Reliability

The IT158 is a prepreg that has good through-hole reliability in manufacturing your printed circuit boards. It has been used in the past few years to manufacture PCBs with through-hole components on them. The IT158 has a lower density than other materials, which means it can be used to make PCBs that are more flexible and less brittle.

Low CTE and High Thermal Reliability

The IT158 is a prepreg that has low CTE and high thermal reliability in manufacturing your printed circuit boards. It is a cross-linked, saturated polyimide with a glass transition temperature of 150°C. This gives it the ability to resist both thermal cycling and high temperatures.


CAF Resistant PCB

CAF Resistant PCB

Excellent CAF Resistance

This prepreg has excellent CAF resistance in manufacturing your printed circuit boards, providing you with the option to use a low-temperature cure without sacrificing the integrity of the board’s structure. It also offers high tensile strength and good flexural properties, allowing you to build robust structures with no risk of deformation.

Available in Variety of Constructions

The IT158 is a prepreg that is available in a variety of constructions in manufacturing your printed circuit boards. It can be used for the production of low-density printed circuit boards, and it is suitable for use with both thermoset and thermoplastic processes.

The IT158 offers excellent mechanical properties, as well as high dielectric strength and thermal stability. It also has good flexural strength, impact resistance, and thermal shock resistance.

It’s a laminate designed to be used with FR-4 epoxy glass. The IT158 has a high strength-to-weight ratio, which makes it ideal for use in high-speed or high-reliability applications.

IT158 Applications

IT158 prepreg can be used to produce high-quality PCBs that need to bend or flex during use. It is resistant to chemicals and heat. This means that it can be used to manufacture PCBs that are exposed to both of these conditions.

IT158 has a high-quality resin used in the manufacturing of printed circuit boards. It has many characteristics that make it an ideal material for use in PCBs, including:

PC and Notebook

Computer and Notebook PCB

PC and Notebook

IT158 prepreg is a material that can be used in manufacturing PC and Notebook circuit boards. IT158 prepreg is a type of epoxy resin that can be cured under heat, pressure, and time. The boards are made from fiberglass cloth with epoxy resin coated over it. This process allows for the creation of circuits that can be used for a lot of purposes.

The main benefit of IT158 prepreg is that it is strong enough to hold together during the manufacturing process, but also flexible enough to bend without breaking or cracking during use. This makes it an ideal material for making circuit boards that need to withstand extreme conditions or heavy use such as those found in high-end electronics.

Memory Module

Memory Module PCB

Memory Module

This prepreg is a high-performance compound that is used in the manufacturing of memory modules. It has been designed to withstand extreme temperatures and pressure, which makes it the perfect material for use in these types of applications.

IT158 prepreg can be used to create flexible or rigid structures depending on your needs, so it’s a versatile material that can be used with many different processes.

Multilayer PCB

Multilayer PCB

Multilayer PCB

IT158 is a prepreg that is used in the manufacturing of multilayer printed circuit boards. Prepregs can be made from a variety of materials and are used to reinforce composite parts, like those made of glass, carbon fiber, and other materials.

IT158 is a special kind of prepreg that’s designed specifically for use in multilayer PCB manufacturing; it’s one of the most popular materials for this purpose.


Automobile PCB


IT158 is a prepreg with excellent electrical properties and thermal conductivity. This makes it an ideal material for manufacturing printed circuit boards used in automobiles.

IT158 is a polyimide, meaning that it consists of long chains of imide groups joined by carbon bridges. The imide groups are highly polar, which causes the material to have excellent dielectric properties. The carbon bridges also contribute to their high thermal conductivity, which makes it well-suited for use as a circuit board material.

Servers and Networking

This is also used in manufacturing servers and networking printed circuit boards. It is a thermoset phenolic resin that is highly flame retardant and offers excellent electrical insulation, low dielectric constant and dissipation factor, good thermal stability, and high mechanical strength. The material can be cured at temperatures up to 150°C.

The material is used to reduce the weight of components, increase their mechanical strength, and reduce the amount of resin needed to manufacture them.


These prepregs are pre-impregnated materials that are used in the manufacturing of composite parts. They are typically made up of highly-reactive resins, which are combined with fibers and other fillers to form a material that can be molded into any shape or size desired.

IT158 is a carbon fiber-reinforced epoxy resin system with high-temperature properties, as well as good chemical resistance and electrical insulation properties. IT158 is suitable for use on electronic parts and products where high temperatures are required or when there is a risk of damage from chemicals or moisture.

Heavy Copper Application

Heavy Copper PCB

Heavy Copper Application

This prepreg is also used in manufacturing heavy copper application printed circuit boards. The boards are used for power distribution, motor control, and other high-power applications. It is also used in automotive electronics and defense applications.

The IT158 prepreg has a very low dielectric constant. This means it can be used in high-frequency circuits without creating a lot of capacitance or inductance. This type of material is often used as an insulator between layers of copper foil or as an insulating layer under the copper foil in multilayer circuits because of its ability to withstand heat and electrical stress.

IT158 Industrial Approval

When it comes to IT158, you need to know that the best prepregs are approved by the industry.

The IT158 is an industry-approved prepreg. It’s been developed in accordance with the following standards and has been specifically designed for interconnections in manufacturing printed circuit boards.

UL 94 V-0

UL 94 V-0 Testing

UL 94 V-0

This is a standard that measures the flammability of printed circuit boards. It is often used to determine how safe a material or product is. Especially when it comes to things like electrical components. UL 94 V-0 means that a material will not burn for at least 10 seconds when it’s tested vertically and exposed to flames.

When you’re working with electronics, a fireproof material is essential. You need to know that your materials won’t catch fire and cause an explosion. You’ll be sure to avoid serious damage in the event of an accident or malfunction. That’s why IT158 was created—to provide you with a fireproof option..

The UL 94 V-0 rating indicates that IT158 has been tested to meet industry standards for flame resistance and smoke density. This rating means that it can be used safely in many different environments, including areas where flammable gases or liquids are present.


IPC-4101C is a specification for base materials used in the manufacture of rigid and multilayer printed boards. The requirements in this specification pertain to the base material and its properties, as well as to the manufacturing process.

The base material must have suitable properties for use in rigid or multilayer printed boards. These are high dimensional stability, good mechanical strength and impact resistance, low moisture absorption, no warp or curl, good chemical resistance, etc. The manufacturing process must ensure that these properties are maintained throughout production and storage.

IT158 can be used to create printed circuit boards. Printed circuit boards made with IT158 are IPC-4101C certified. This means they are tested for performance and quality and have met the requirements of the IPC standard.

RoHS Compliant

RoHS Compliant PCB

RoHS Compliant

Stands for “Restriction of Hazardous Substances” and is a set of restrictions regarding the use of hazardous materials. These restrictions are meant to protect humans and the environment from potentially dangerous substances that can be found in electronics.

IT158 printed circuit boards meet all of these requirements because they don’t contain any lead or cadmium components. They also don’t use hexavalent chromium as an anti-corrosive coating on soldered joints or other parts of the board assembly process.


Why Choose IT158 as Laminate / Prepreg for your PCB?

IT158 is an industry-standard for laminate/prepreg for PCBs. It’s the best choice for your project if you’re looking for a high-quality product that will meet your technical specifications. And it’s available in a range of thicknesses to meet all of your needs.

IT158 is a prepreg that’s been used in the PCB industry for years. It’s been trusted by professionals and hobbyists alike. That’s why we’ve chosen to use it as our laminate of choice.

The reasons are simple: IT158 comes in a range of thicknesses, so you can get flexibility for whatever project you’re working on. It has a smooth texture, which means it won’t fray or show wear and tear easily—even if you’re working on an older project! And it’s easy to cut and drill, so even if you’re new to electronics, you’ll be able to get started quickly and easily.


IT158 is a high-quality, environmentally friendly laminate/prepreg that is ideal for use in PCB manufacturing. IT158 provides a durable finish to your PCB and is made with a non-toxic resin.

The IT158 resin can be used as a surface layer on your PCB boards or as an inner layer in multilayer boards. This means you can have the best of both worlds—a beautiful finish and superior mechanical properties.

You can trust IT158 to provide excellent adhesion, toughness, and durability. It also protecting your life-critical components from corrosion, moisture, and other environmental factors.

IT158 has been specifically designed for use with printed circuit boards. It’s providing you with the perfect solution for your next project!

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