What are Rigid Substrates and Tape Substrates?


June 18, 2020

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More and more industries buy silicon wafer each year to match the ever-increasing demand for electronic devices. Because of this, the need for substrates and interposers for semiconductor packages is also rapidly growing. A substrate is an underlying layer of material that provides semiconductor packages mechanical base support and an electrical interface to allow users to access the device inside the package. There are numerous types of the package substrate, but in this article, we will only focus on two major categories: rigid and tape substrates.

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What are Rigid Substrates and Tape Substrates?

Rigid Substrates

Rigid substrates, as the name implies, have permanent shape and form. They're made of stacks of thin layers called laminate substrates. Laminate substrates can be made from a wide variety of materials, but the two widely used are FR4 and Bismaleimide-Triazine (BT). FR4 is the conventional epoxy-based laminate, while BT is the newer, more advanced, and high-performing resin-based laminate. Most manufacturers prefer working with BT because of its high Tg, excellent insulation properties, and low dielectric constant.

Tape Substrates

Tape substrates are made from high-temperature, durable polymer material called polyimide. What's excellent about tape substrates, is that they're flexible. They can securely carry the circuits built onto them, even when subjected to motion. This makes them useful for moving applications like printers and disk drives. Another great thing about tape substrates is that they're lightweight and affordable. They also do a good job when it comes to achieving fine-line features. The drawback of using tape substrates are warpage issues and difficult to handle during processing.Substrates are also used to route an IC's I/O system to the interconnection features of the application board. That's why substrates need to have metal conductors within themselves to be able to do this routine job. Buy silicon wafer from a trusted wafer manufacturing company to guarantee that your ICs are highly functional and efficient. Poor performing ICs defeats the purpose of using high-quality substrates.

where can i buy a silicon wafer?

Where to Buy Silicon Wafer?

Buy silicon wafer from a wafer manufacturing company you can trust. At Wafer World, we offer high-quality wafers at a reasonable price. Contact us for inquires or purchase online!

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