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UL-Authorization Received for Ventec High-CTI, Halogen Free FR15.1 Substrates VT-447C and VT-441C
February 27, 2024 | VentecEstimated reading time: 2 minutes
Ventec International Group Co., Ltd. , is pleased to announce that UL’s evaluation of two of Ventec’s halogen-free, phenolic cured high-CTI substrates have received authorization to apply the UL mark. Both VT-441C and VT-447C FR15.1 materials have thus been recognized for achieving 150oC Maximum Operating Temperature (MOT) for electric and mechanical RTI (Relative Temperature Index).
UL's investigation of Ventec's mid-Tg VT-441C and high-tg VT-447C halogen-free substrates has been completed and full compliance with the applicable requirements including 150oC MOT (Maximum Operating Temperature) for electric and mechanical RTI (Relative Temperature Index) has been determined.
Offering exceptional UL RTI performance, both high-CTI substrate materials ensure reliability in the presence of high applied voltages in harsh and humid environments. With high voltage CAF resistance, Grade 0 (>600V) Comparative Tracking Index (CTI) and glass transition temperatures (Tg) of 155oC and 175oC, the versatile halogen-free materials are the perfect high-reliability PCB choice for use in extreme high-temperature/humidity applications. These include DC/DC power modules, IGBT applications, motor controllers, high lumen output LED devices, battery charging, OBC chargers for EV vehicles and several other automotive “underhood” applications.
The prepregs are available in roll or cut-to-size panel format, with laminates supplied in sheets or cut-to-size panels with core thicknesses of 0.004” (0.10mm) to 0.200” (5mm). They are also offered in a wide range of copper foil thicknesses including heavy coppers. This versatility is ideal for both single layer and multiple layer PCB designs.
Mark Goodwin, COO EMEA & Americas, commented: "Achieving UL authorization for our industry-leading 150oC MOT performance is fantastic news. As a complement to our full halogen-free and thermal management solution series, our customers have access to epoxy materials that meet virtually any high reliability performance requirements for the world’s most demanding applications."
Additional content from Ventec International Group:
- The Printed Circuit Designer’s Guide to… Thermal Management with Insulated Metal Substrates, Vol. 2 by Didier Mauve and Robert Art
- The Solutions Guide to… Thermal Management by Didier Mauve and Ian Mayoh
- The Printed Circuit Designer’s Guide to… Thermal Management with Insulated Metal Substrates, Vol. 1 by Didier Mauve and Ian Mayoh
- Roundtable Discussion: Use of IMS Thermal Materials in Multilayer Stackups for Power Applications, with Chris Hanson and Denis McCarthy of Ventec, Rax Ribadia of Excello Circuits, and Pete Starkey, I-Connect007 technical editor.
You can view other titles in the I-007eBooks library here.
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I-Connect007 Editor’s Choice: Five Must-Reads for the Week
05/01/2026 | Michelle Te, I-Connect007If it feels like the PCB industry is accelerating faster than ever, you’re not imagining it. From advanced materials driven by AI applications to renewed investment in domestic manufacturing—and the next generation stepping into critical roles—there’s a lot shifting at once. My selections for this week highlight where the pressure points are forming, and where the opportunities are emerging.
Electronics Manufacturing Needs Your Voice: Global Sentiment Survey Now Live
04/30/2026 | Global Electronics AssociationThe latest monthly Global Sentiment Survey from the Global Electronics Association is now open. At a time when demand uncertainty, policy shifts, energy costs, and supply chain recalibration are pulling the industry in multiple directions, the survey captures something macroeconomic data often misses: how manufacturers are actually experiencing conditions on the ground.
From Backbone to Breakthroughs: I-Connect007 Wraps PCB Materials Series with Focus on Innovation
05/06/2026 | I-Connect007I-Connect007 wraps up its six-part podcast series, PCB Materials: The Backbone and Future of Electronics, with Episode 6 and a discussion focusing on innovation. In Episode 6, Marcy LaRont speaks with Isola CTO Kirk Thompson about a critical turning point for the PCB industry as innovation accelerates. As data rates climb and demands from AI infrastructure, power density, flexible electronics, photonics, and chiplet integration intensify, traditional material assumptions are no longer sufficient.
Jiva Soluboard Getting the Attention It Deserves
04/30/2026 | Marcy LaRont, I-Connect007 MagazineJiva is a newer company that bridges the divide between PCB fabrication and product circularity or sustainability. Jiva Soluboard is the first fully recyclable laminate material ever created for PCB fabrication, and it's not going unnoticed. Stephen Driver, CEO of Jiva, gave us an update at APEX EXPO, including an exciting certification achievement in February.
Driving Innovation: Selecting the Right Laser Source
04/28/2026 | Simon Khesin -- Column: Driving InnovationWhen I first joined Schmoll Maschinen, I brought experience from almost every PCB process, except for laser. As I immersed myself in laser processing, I realized why it can seem so daunting to a newcomer. The complexity arises from three intersecting factors: A vast variety of laser sources: CO2, UV-nano, green-pico, UV-pico, IR-pico, and others; a diverse range of applications: Drilling, cutting, ablation, and more; and an extensive list of materials: These have vastly different absorption rates. Choosing the right machine or laser source is rarely trivial. Even for experienced engineers, answering "Which source is best?" requires examining the business's specific goals.