Isola Launches Low-loss Laminate for 100 GB Ethernet Apps


Reading time ( words)

I spent time at IPC APEX EXPO 2015 talking about Isola’s launch of a low-loss, low-skew laminate prepreg with Fred Hickman, senior director of high-speed digital products. Hickman explains that the new material, Chronon, will be one of the enablers of 100 GB Ethernet applications.

Pete Starkey: Fred, it’s great to meet you. As the senior director of high-speed digital products at Isola, you are the ideal person to tell us about the new product launch. The brand is Chronon and it's a low-loss, low-skew laminate prepreg. Could you just give me a short introduction to this material?

Fred Hickman: Thanks for coming by, Pete, and thank you for giving me a chance to introduce you and your readers to Chronon. Chronon is indeed a new low-loss material for us. Essentially, it's one of the enablers, we think anyway, for 100 GB Ethernet applications, with a combination of good DK, 3.64 DK, less than .004 loss, but also excellent for skew. Fiber weave affects skew so it is a skew mitigator. So what we're proposing for people who currently use other competitive materials on the market, this is a drop-in material with very similar electrical, but very much improved skew mitigation capabilities.

So we have this product, Chronon, and last year we also introduced Tachyon 100G. Both have lower insertion loss, but Tachyon does not have the same ability to mitigate skew as Chronon.

Starkey: Are you in a position to give me a brief explanation as to how you've gone about minimizing the skew? What is it about normal materials that causes skew and how can that be overcome?

Hickman: With most materials, when you change the resin content it has a very big impact on the DK of the material. For instance, our best skew mitigator is GigaSync, changing the resin content from 50% all the way up to 75% and you get about a 3% change in the DK. So if you have lines going across resin/glass it doesn't matter because the DK basically stays the same. With Chronon, the DK change is only about 9% and in that same range, but with most other materials the DK range is around 20%.

Starkey: Oh, I see.

Hickman: So essentially what we're doing is using a combination of spread glass, also some proprietary engineering techniques with which we're minimizing the weave effect of glass.

Starkey: I understand now. It’s really on a microscopic scale. Because there's such a difference in product and concept between glass and resin, if you've got a material where the signal has a glass-rich area and a resin-rich area, you can sort of smooth that out while still keeping the benefits of woven glass reinforcement, but having that reinforcement much more uniformly distributed through the substrate.

Hickman: Absolutely. You hit it right on the head.

Starkey: Well, Fred. Thanks very much indeed.

Hickman: Thank you, Pete. 

Share




Suggested Items

The Growing Need for UHDI

11/30/2022 | I-Connect007 Editorial Team
Jan Pedersen of NCAB Group is deeply involved in IPC standards development surrounding ultra HDI and keeps his finger on the pulse of the industry surrounding this type of fabrication. With Asia still dominating this area, Jan sees the need for U.S. and European PCB fabricators to make the investment if they want to stay competitive.

Understanding the UHDI Market

11/28/2022 | I-Connect007 Editorial Team
The more we investigate UHDI in the current market, the more advanced packaging becomes a part of the conversation. Yet there are so many questions to be answered. The I-Connect007 Editorial Team met with Calumet’s Todd Brassard and Meredith LaBeau recently to get answers to these questions and find out where the UHDI market is headed.

Electronica 2022: Happy to Be Back in Munich

11/21/2022 | Pete Starkey, I-Connect007
As we stepped out of the hotel into the drizzling rain, we were relieved that it wasn’t snow. Looking down the escalator into the U2 platform in Munich’s Hauptbahnhof central station early on the morning of Tuesday, Nov. 15 and observing the mass of humanity pushing and shoving to cram into trains to the exhibition centre, it appeared that a significant proportion of the international electronics industry had gathered to attend electronica 2022, co-located with SEMICON Europa and recognised as the world’s leading trade fair and conference for electronics.



Copyright © 2022 I-Connect007 | IPC Publishing Group Inc. All rights reserved.