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Conventional PCB manufacturing—which is wasteful, energy intensive, and harmful to the environment—increasingly calls for electronics recycling to reduce material waste and energy requirements through less material production.

Figure 1 The conventional PCB world is ripe with recycling opportunities. Source: IDTechEx

IDTechEx’s new report, “Sustainable Electronics and Semiconductor Manufacturing 2025-2035: Players, Markets, Forecasts,” outlines new recyclable materials for PCBs and provides updates on their full-scale commercial readiness. Below is a sneak peek at these recyclable and biodegradable materials and how they facilitate sustainability in electronics manufacturing.

1. New PCB substrates

While FR4, a glass-reinforced epoxy resin laminate, is a substrate of choice for PCBs due to being lightweight, strong, and cheap, it’s non-recyclable and can contain toxic halogenated flame retardants. That calls for alternative substrates that are biodegradable or recyclable.

Jiva’s Soluboard, a biodegradable substrate made from the natural fiber flax and jute, is emerging as a promising new material as it dissolves in 90°C water. That facilitates component recycling and precious metal recovery at the product’s end of life. Companies like Infineon, Jaguar, and Microsoft are currently testing if this new material can combat rising electronics waste levels.

Figure 2 Soluboard is a fully recyclable and biodegradable PCB substrate. Source: Jiva Materials

2. Polylactic acid in flexible PCBs

Conventional flexible PCBs, built around plastic polyimide, are also ripe for alternative materials. Polylactic acid, currently in the prototype-scale validation phase, emerges as a sustainable material that can be sourced from organic industrial waste and is also biodegradable.

Polylactic acid can withstand temperatures of up to 140°C, which is lower than that of polyimide and FR4. However, it’s compatible with manufacturing processes such as silver ink sintering. Companies and research institutes like VTT are now demonstrating the potential of polylactic acid in flexible PCBs.

3. Recycled tin

Around 180,000 tonnes of primary tin are used in electronics globally. It’s primarily sourced from mines in China, Indonesia and Myanmar and is causing significant environmental damage. Enter recycled tin, which is produced by smelting waste metal and metal oxide. It boasts the same quality as primary tin, which is confirmed by X-ray diffraction.

However, merely 30% of tin is currently recycled worldwide, so there is a greater need for regulatory drivers to encourage increased metal recycling. One example is Germany’s National Circular Economy Strategy (NKWS) unveiled in 2024, aiming to half per capita raw material consumption by 2045.

Figure 3 A boost in recycled tin relies on a strong regulatory push. Source: Mayerhofer Electronik

Mayerhofer Electronik was the first to demonstrate the use of recycled tin for soldering in its electronics manufacturing processes. Now, Apple has committed to using secondary tin in all products by 2035.

4. Regeneration systems to minimize copper waste

It’s a widely known fact that copper is used wastefully in PCBs. This is how it happens: a flat sheet of copper is applied to the substrate before holes are drilled. Inevitably, a circuit pattern produced by etching away the excess copper requires large volumes of chemical etchants like ferric (III) chloride and cupric (II) chloride. As a result, around 70% of the copper initially applied to the board is often removed.

Here, additive manufacturing, in which copper is only applied where required, offers the solution in a method that requires no manufacturing switch. An etchant regeneration system recovers both copper etched from the laminate and etchant chemicals. The recycled copper can serve as an additional revenue stream for the electronics manufacturer.

Related Content

• The problem with recycling
• PCB materials: Recycle, reuse, dispose?
• Trends and Challenges in PCB Manufacturing
• Process for recycling turns up components ready for reuse

The post The advent of recyclable materials for PCBs appeared first on EDN.

Гідні умови праці та кар'єрне зростання пропонує НАЕК "Енергоатом" Інформація КП пн, 04/28/2025 - 13:07

Утвердження гендерної рівності: крок за кроком Інформація КП пн, 04/28/2025 - 12:32

Звіт голови Профспілкового комітету КПІ ім.Ігоря Сікорського Юрія Веремійчука про виконання Колективного договору за період з квітня 2024 до квітня 2025 р. Інформація КП пн, 04/28/2025 - 12:13

Novel Crystal Technology Inc (NCT) of Saitama, Japan has developed a gallium oxide vertical MOS transistor (β-Ga2O3 MOSFET) with a record power figure of merit (PFOM, VBR2/Ron,SP) of 1.23GW/cm2, 3.2 times higher than the previous record (presented at the 72nd Japan Society of Applied Physics (JSAP) Spring Meeting 2025 on 15 March)...

Озеленення в КПІ ім. Ігоря Сікорського триває kpi пн, 04/28/2025 - 11:07

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Components so cheap they make you order at least 100 lol submitted by /u/_xgg [link] [comments]

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This board of draws a lot of current, and I'm trying to fix it. Starting to identify all the components. Hope someone has use for this info. submitted by /u/gwiken65 [link] [comments]

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I made this charger which has 3 outputs, upto 3A combined 2 USB A output 1 USB C output (iykyk) It also charges LiPo and Li-on batteries. I have massive batteries which burns out this tp4056 module, so I added it with this massive heatsink and the small one on top on the ic. It converts any DC input between 6-28V DC to 5V. I know I didn't add thermal paste cause I didn't have one. But it does the job, I tested it. submitted by /u/AdImaginary7827 [link] [comments]

I once had the smaller 50 circuits version when I was a kid. And this was my gateway to developing a passion for electronics. Made some cool circuits back then some 20 years ago. But my mom threw it away:( So now I got a myself this bigger version. In your face mom! I feel like a kid again. Ideas for circuits outside the book are welcome! submitted by /u/Dirty_Dail [link] [comments]

Editor’s Note: This Design Idea (DI) offers another alternative to the “To press ON or hold OFF? This does both for AC voltages” that was originally inspired by Nick Cornford’s DI: “To press ON or hold OFF? This does both.”

Figure 1 gives a simple circuit for the PUSH ON, PUSH OFF function with only a few inexpensive components. In this design, the output is connected to the input of the gadget when you press the push button (PB) once. For the next push, the output is disconnected.

Wow the engineering world with your unique design: Design Ideas Submission Guide

This is an attractive alternative to bulkier ON/OFF switches for DC circuits. The circuit has a fairly simple explanation. U1 is a counter.

Figure 1 A Flip ON Flop OFF circuit for DC voltages. The gadget is connected to the output terminals of the PB. With an adequate heat sink for MOSFET Q1, the output current can go up to 50 A.

During power on, R2/C2 resets the counter to zero. When you push PB momentarily once, a pulse is generated and shaped by a Schmidt trigger inverter U2 (A & C), which counter U1 counts. Hence, the LSB (Q1) output of U1 becomes HIGH, making MOSFET Q1 conduct. At this point, the output gets the input DC voltage.

When you push PB momentarily again, another pulse is generated and counted by U1. Hence, its LSB (Q1) output goes LOW and MOSFET Q1 stops conducting and output is disconnected from input. This action continues, making output ON and OFF for each push of PB.

Jayapal Ramalingam has over three decades of experience in designing electronics systems for power & process industries and is presently a freelance automation consultant.

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The post Another simple flip ON flop OFF circuit appeared first on EDN.

To advance its growth strategy, gallium nitride (GaN) power IC and silicon carbide (SiC) technology firm Navitas Semiconductor Corp of Torrance, CA, USA has announced corporate governance enhancements that are said to reflect the board of directors’ ongoing commitment to stockholder engagement and value creation for stakeholders...

FPGA-based prototyping solutions provider S2C has teamed up with RISC-V processor IP supplier Andes Technology to enhance prototyping capabilities for system-on-chip (SoC) designs. This collaboration aims to bolster capacity and flexibility for modeling, prototyping, and software development work carried out around Andes’ RISC-V cores.

The partnership is built around S2C’s recently launched Prodigy S8-100 FPGA prototyping platform, which is based on AMD’s Versal Premium VP1902 adaptive SoC. “Versal Premium VP1902 adaptive SoC is the industry’s largest FPGA-based adaptive SoC,” said Mike Rather, senior product line manager at AMD. “That empowers engineers to push the boundaries of technology.”

Figure 1 The VP1902 adaptive SoC bolsters prototyping platform’s capacity with a larger FPGA. Source: AMD

Capacity limitations are a common challenge in FPGA prototyping, which restricts SoC developers’ ability to integrate multiple RISC-V cores along with subsystems like network-on-chip (NoC), DDR, PCIe controllers, and more. Prodigy S8-100 prototyping addresses these challenges by offering a single FPGA version with up to 100 million logic gates.

“The large-capacity FPGA-based prototyping allows early customizations, ultimately accelerating their time-to-market with Andes-based RISC-V SoCs,” said Emerson Hsiao, president of Andes Technology USA.

Figure 2 The new FPGA prototyping platform further boosts capacity with larger configurations. Source: S2C

As shown in the above figure, Prodigy S8-100 also includes larger configurations with two or even four VP1902 adaptive SoCs, which scales capacity to up to 400 million logic gates per system. That enables full SoC validation in hardware, significantly reducing development cycles, optimizing performance modeling, and accelerating software development before production silicon becomes available.

Next, the new prototyping platform encompasses S2C’s extensive library of nearly 100 daughter cards, which support applications ranging from networking, storage, and multimedia to generic IOs. This facilitates efficient interface modeling and simulation without sacrificing FPGA logic resources.

S2C’s new FPGA prototyping platform will be demonstrated live at the Andes RISC-V Con, which will be held on April 29, 2025, at the DoubleTree by Hilton Hotel in San Jose, California.

Related Content

• FPGA board offers low-cost prototyping
• 10 Favorite FPGA-Based Prototyping Boards
• FPGA Prototyping of System-on-Chip (SoC) Designs
• Embedded design with FPGAs: Development process
• Why, When and How: The basics of embedded systems prototyping

The post FPGA prototyping harnessed for RISC-V processor cores appeared first on EDN.

Стипендії від компанії "ІКНЕТ" для студентів ФЕА Інформація КП пт, 04/25/2025 - 10:00

SiCPAK power modules from Navitas use advanced epoxy-resin potting to achieve 5× lower thermal resistance shift for extended system lifetime. Based on trench-assisted planar SiC MOSFETs, the modules deliver efficient high-temperature performance for EV DC fast chargers, solar inverters, industrial motor drives, energy storage systems, and uninterruptible power supplies.

The 1200-V SiCPAKs are designed to resist high humidity and prevent moisture ingress, maintaining stable thermal performance under power and temperature cycling. In thermal shock testing (–40°C to +125°C, 1000 cycles), the modules showed a 5× smaller increase in thermal resistance compared to those with silicone-gel potting. Additionally, while silicone-gel modules failed isolation tests, the epoxy-resin potted SiCPAKs retained acceptable isolation levels.

Featuring built-in NTC thermistors, the 1200-V power modules are offered with on-resistance ratings from 4.6 mΩ to 18.5 mΩ in half-bridge, full-bridge, and 3L-T-NPC circuit configurations. They also maintain pin compatibility with industry-standard press-fit modules.

The 1200-V SiCPAK modules are now available for mass production. Datasheets can be found here.

Navitas Semiconductor 

The post SiC modules boost thermal stability appeared first on EDN.

📰 Газета "Київський політехнік" № 17-18 за 2025 (.pdf) Інформація КП чт, 04/24/2025 - 22:00

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