Chapter 2 Excerpt from the Book ‘Thermal Management: A Fabricator's Perspective’


Reading time ( words)

Chapter 2: IMPCBs or MCPCBs
Insulated metal PCBs (IMPCB) or metal-clad PCBs (MCPCB) are a thermal management design that utilizes a layer of solid metal to dissipate the heat generated by the various components on the PCBs. When metal is attached to a PCB, the bonding material can either be thermally conductive but electrically isolative (IMPCBs or MCPCBs), or in the case of RF/microwave circuits, the bonding material may be both electrically and thermally conductive. The reason that RF designers usually have the bonding material thermally and electrically conductive is that they are using this not only as a heat sink but also as part of the ground layer. The design considerations are quite different for these different applications.

This chapter will focus on the IMPCB design considerations, and Chapter 4 will focus on RF thermal management. We will focus on things designers should be discussing with their PCB supplier to ensure manufacturability and a successful product launch. Since the choices, options, and decisions can be extremely complicated, it is critical to engage early and collaborate with the PCB fabricator about the specific design to ensure the most cost-effective solution.

Some of the more common applications of IMPCBs include:

  • Power Conversion: Thermal-clad offers a variety of thermal performances, is compatible with mechanical fasteners, and is highly reliable
  • LEDs: Using thermal-clad PCBs ensures the lowest possible operating temperatures and maximum brightness, color, and life
  • Photovoltaic Energy: Renewable energy to power telecommunications, military camps, residential and commercial structures, and battery charging stations
  • Motor Drives: Thermal-clad dielectric choices provide the electrical isolation needed to meet operating parameters and safety agency test requirements
  • Solid-State Relays: Thermal-clad offers a very thermally efficient and mechanically robust substrate
  • Automotive: The automotive industry uses thermal-clad boards, as they need long term reliability under high operating temperatures coupled with their requirement of effective space utilization

To download The Printed Circuit Designer’s Guide to…Thermal Management: A Fabricator’s Perspective, click here. You can also view other titles in our full library. Check out other books from American Standard Circuits, including The Printed Circuit Designer’s Guide to… Fundamentals of RF/Microwave PCBs and Flex and Rigid-Flex Fundamentals.

Share




Suggested Items

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

06/03/2022 | Andy Shaughnessy, Design007 Magazine
Things are heating up in the world of PCB design and manufacturing as well. In the past week, we published quite a bit of news—some good, some not so good. Some of the news is mixed, as we see with the EMS industry shipments rising YOY in April, but falling from the previous month. It’s nice to see NASA investing in American small businesses, but they didn’t really have a choice, did they?

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

05/27/2022 | Nolan Johnson, I-Connect007
I know I’m not alone in this behavior: Car advertisements during television commercial breaks are as good as invisible to me, until I’m thinking about getting a new car. Only then do I notice them. Rather, I see each one with all my attention and being. If that extends into our industry, then everybody must be itching to pick up some new equipment. This week’s must-reads includes a smattering of new product announcements, along with the news of the IPC European subsidiary.

PCB Technologies’ InPack to Focus on Miniaturization, Packaging

05/16/2022 | Andy Shaughnessy, Design007 Magazine
I recently spoke with PCB Technologies’ Jeff De Serrano, Yaniv Maydar, and Alon Menache about their new venture, InPack. They explain their plans to focus on advanced packaging, miniaturization, and other high-end technology, with much faster time to market, and they offer a view of the global market as well.



Copyright © 2022 I-Connect007. All rights reserved.