How High a Temperature Can the Printed Circuit Board Withstand?

By Published On: April 29th, 2025

One of the core properties of printed circuit boards is temperature resistance. This article introduces the maximum temperature that PCB boards can withstand.

PCB assembly18

The printed circuit boards are an essential
component of electronic devices. These boards are used in many electrical devices and instruments. One
of the most important characteristics is temperature resistance. What is the maximum temperature at
which the PCB Board will be able to withstand?
We’ll look at PCB temperature resistance.

The First Thing to Consider Is the PCB’s Temperature Resistance

The temperature resistance of the Printed Circuit Board is a sign that it will not crack or embrittle in
a high-temperature environment.

It is therefore very important to consider the temperature resistance of the board. The temperature
resistance of PCBs can be affected in normal circumstances by many factors. These include material,
manufacturing processes, circuit design and others.

The temperature resistance of PCB is largely determined by the material.

Second, You Should Consider the Material Used to Make PCB Boards

1.FR-4

FR-4 is a glass fiber reinforced epoxy that’s commonly used in the manufacture of PCBs.

The maximum temperature that FR-4 can withstand is 130 degrees C. Any higher than this will cause the
board to fail or deform. FR-4 materials are widely used in the high-end industry due to their low cost
of production, good price performance and ease of processing. FR-4 materials are not suitable for
high-temperature applications due to their insufficient temperature resistance.

2. High-Temperature FR-4 Material

High-temperature FR-4, a glass-fiber-reinforced epoxie product, is specially designed for high
temperature environments.

High-temperature FR-4, a glass fibre reinforced epoxy product, has been designed specifically for high
temperatures.

FR-4 High-Temperature has a higher production cost but is more reliable at high temperatures than FR-4.
It is widely used in electrical industries.

3. Polyimide Product

Polyimide is a high performance protective material that has many exceptional properties, including high
temperature resistance, chemical degradation resistant, electromagnetic wave interference, and more.

The material is used for precision temperature measuring instruments, aerospace, military and other
high-tech applications. The cost of polyimide is high, but its durability at higher temperatures makes
it unbeatable.

PCBs can withstand temperatures up to 500 degrees C or higher depending on the product used. Electrical
tools and meters, in general, are made from FR-4 or FR-4 high temperature material. This is able meet
the requirements of most applications.

High-performance polyimide is required in some applications, such as aerospace, army, and other sectors.
It is important to select the correct PCB material for your application. The board will be reliable and
stable at high temperatures.

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