Isola Releases IS550H Material


Reading time ( words)

Nolan Johnson speaks with Michael Gay of Isola and Chris Hunrath of Insulectro about the release of their new halogen-free, high-thermal reliability material, which they hope fills the gap in the market between epoxies and polyimides.

Nolan Johnson: I understand there’s something new on the market for us to talk about. Why don’t you tell us what it is and what the application is?

Michael Gay: Quite a few years ago, the automotive industry OEMs were looking for an alternative to ceramic-based materials for high temperature applications. They wanted something that was less costly. They wanted something that would fill in the gap between typical FR-4 applications and ceramics. A consortium called The Help Project was developed with several large OEMs and other industry participants in the automotive sector who wanted to work together and develop this material. We started with about a half-dozen different candidates and then whittled it down, making comparison to products like 370HR, which is a typical FR-4 lead-free compatible material. We started doing evaluations and we came up with the product we now call IS550H.

Johnson: And this is a new product?

Gay: Yes, it’s brand new. We launched this product about four or five weeks ago. The product is manufactured in Asia. It’s really directed toward the automotive industry, but because of the properties of the material, it can actually be applied to other industries where high temperatures and high voltage CAF performance are required.

Johnson: From the automotive application perspective, how is this a response to the demands of OEMs?

Chris_Hunrath.jpgChris Hunrath: High-speed charging is an obvious area of concern, and one of the ways you accomplish that is using higher voltage. You need something with very good dielectric properties. Epoxy is good, but this material is better. Rapid charging drives this heavy copper requirement as well as the ability to make circuits and embed them in the dielectric material. With thermal performance, in the organic substrates, it has always been the domain of polyimide, with epoxies, multifunctional epoxies, and some materials in between. But there was a space between polyimide and epoxy, and we knew that polyimide doesn’t do certain things very well. It absorbs moisture, but it gets brittle as it cures. It is very decomposition resistant, but it does have some other drawbacks.

As Michael mentioned, ceramics are very good in certain applications for high temperature, but you can’t do everything you want to do in circuitry in ceramics that you can easily do with a PCB material or organic PCB material. This just gives the engineers and designers a whole lot of options when they’re designing circuits. The base resin chemistry (I don’t believe it’s proprietary) is something called benzoxazine, and it’s a newer resin system. It’s been around for a long time, but it’s newer than epoxy. The way it cross-links and the way it behaves in high temperature applications is different. It has actually been used in aircraft bodies. You’ve heard the airline industry is moving away from aluminum parts to composite parts. Well, this is the resin that is being used. Resin has to be able to flow and fill large features very well, but it also has to withstand temperature variations. Think of an aircraft on the runway vs. an aircraft in the upper atmosphere—we see some pretty wide temperature changes. This resin chemistry does all those things very well.

To read this entire interview, which appeared in the April 2021 issue of PCB007 Magazine, click here.

Share

Print


Suggested Items

Benchmarking Your Process Engineering

04/29/2021 | I-Connect007 Editorial Team
Mark Thompson has been in bare board fabrication for over 30 years. He is now laying out printed circuit boards at Monsoon Solutions, a high-tech design bureau near Seattle, Washington. With Mark’s extensive hands-on knowledge of PCB manufacturing, he brings a unique perspective to PCB design. In this discussion with the I-Connect007 editorial team, Mark shares what’s important from a process engineer’s point of view, and how to stay on top of evaluating and benchmarking your manufacturing process, along with insights from his new role as a designer.

EIPC Technical Snapshot: Supply Chain and Material Price Pressures

04/26/2021 | Pete Starkey, I-Connect007
EIPC’s seventh Technical Snapshot webinar on April 14 was timely and appropriate. In the context of current supply chain issues and material price pressures facing the PCB industry, particularly in Europe, the EIPC team brought together an outstanding group of experts—each a leading authority in his field—to analyse and comment upon the areas of concern and to respond to questions raised by a capacity audience. As Alun Morgan said, “If you don’t use the European supply chain, you won’t have it anymore!”

I-Connect007 Editor’s Choice: Five Must-Reads for the Week

04/23/2021 | Andy Shaughnessy, I-Connect007
This week, we bring you a wide swath of news, columns, and articles from the past week. Altium announced a new cloud platform that connects design stakeholders with users of its Altium 365 environment. Cadence Design Systems has acquired a company that develops computational fluid dynamics technology to help expand its system analysis offerings.



Copyright © 2021 I-Connect007. All rights reserved.