CalRamic Offers Expertise In High Voltage Ceramic Capacitors

ased in Reno, Nevada, CalRamic Technologies has been a trusted U.S.-based manufacturer of high-voltage ceramic capacitors, delivering precision-engineered solutions for demanding applications. Every product is 100% manufactured in our Reno facility.

CalRamic manufactures a broad range of high-voltage components in configurations from 50 VDC to over 100 kVDC with a strong focus on single layer capacitors rated at 3 kVDC and above. Our Lean Manufacturing principles help us provide shorter lead times, rapid prototype turnaround, and multiple design options tailored to each customer's specific application.

High voltage is a specialty field that involves far more than simply scaling up lower-voltage components. It introduces unique challenges, including electric-field stress, partial discharge, insulation degradation, and specialized failure mechanisms that are not encountered to the same degree at lower voltages.

Decades of experience and a dedicated focus on high-voltage technology have enabled CalRamic to develop capabilities that few companies possess. This expertise allows us to design, develop, and manufacture high-voltage components with a deep understanding of the unique challenges and reliability requirements of the field.

We offer a variety of ceramic dielectric materials and configurations, allowing our engineering and manufacturing teams to develop solutions optimized for demanding electrical, environmental, and performance requirements. From standard components to highly customized designs, our goal is to deliver reliable, application-specific performance.

Our high-performance capacitors are designed to support a wide range of applications, including geothermal, commercial and industrial systems, medical equipment, commercial aerospace, ground-based military systems, military aerospace, and high-reliability space and satellite applications.

The growing demand for high-voltage pulse capacitors is being driven by advances in medical technology, defense, and other high-power applications. In particular, emerging anti-drone (UAV) technologies are creating increased demand for high-voltage capacitors used in high-power microwave (HPM) systems and other directed-energy (DEW) technologies. CalRamic will work closely with customers to understand their unique electrical, mechanical, and environmental requirements, providing capacitor solutions engineered to support application performance, reliability, and mission success.

Quality is at the core of everything we do. Our quality management system conforms to—and exceeds—the requirements of ISO 9001. Through rigorous manufacturing controls, carefully selected materials, precision processes, and performance-focused design practices, we produce high-voltage capacitors built to meet the needs of demanding applications.

We believe our success begins with our people. CalRamic leadership fosters a culture that encourages personal growth, professional development, and individual success while promoting a Team philosophy. This has enabled us to build up a highly trained production crew with high tenure.

Isanne Vetter and Andrew Schweber - Key Members of Our Sales Team.

A significant part of our value proposition is our unwavering commitment to customer service. CalRamic answers the phone when customers call and provides prompt, responsive support throughout the quoting and order process. Quotes for catalog parts are typically provided the same day or by the following day. We bring that same level of responsiveness to custom parts, with prompt communication and real-time customer interaction to keep projects moving forward.

Our commitment extends to delivery. With typical lead times of 8 to 12 weeks, we offer excellent delivery performance while maintaining a laser-like focus on on-time delivery. Customers can count on CalRamic to communicate clearly, respond quickly, and deliver when we say we will.

We want our customers to have the knowledge and resources they need to succeed. Our website features a comprehensive High-Voltage Capacitor educational library, including application notes and product training modules designed to help customers better understand the technical principles and applications of high-voltage capacitors.

As of March 2026, CalRamic is excited to have become part of the Heico/Exxelia family. Exxelia is a trusted leader in providing high-reliability passive components, and this strategic partnership creates a strong synergy between our organizations.

Together, we can better serve our customers by expanding our capabilities beyond high-voltage solutions and providing a comprehensive range of passive component needs. We look forward to leveraging the strengths of both companies to deliver greater value, reliability, and service to our clients.

We look forward to working with our customers with our combined decades of experience, advanced manufacturing practices, rigorous quality controls, and a collaborative approach to help solve challenging high-voltage applications.
We are fully committed to your application's success.

CalRamic manufactures a comprehensive range of high-voltage capacitors to meet the most demanding application requirements.

MAIKE Magnetics: Custom-engineered magnetic component solutions for power electronics

s modern power electronics pursue higher frequency operation and greater power density, magnetic components frequently pose key engineering trade- offs between size, thermal performance, loss and manufacturability. MAIKE Magnetics was founded in 2005 and is headquartered in Mianyang, China's national science- technology city. With more than 20 years of specialized experience, MAIKE is a dedicated developer and manufacturer of custom magnetic components for power electronics. The company differentiates itself by combining in- house magnetic design expertise, power- supply engineering capability, and full- scale manufacturing capacity to deliver application- specific magnetics rather than only standard off- the- shelf components.

MAIKE's broad product portfolio includes Planar transformers and Inductors, Integrated magnetics, conventional high- frequency transformers, power transformers, common- mode and differential- mode inductors, PFC chokes, and current transformers. Recently,MAIKE has been actively investing in R&D and production of high- frequency isolation transformers for solid- state transformer (SST) applications. These components serve demanding markets such as photovoltaic inverters, wind- power systems, energy- storage equipment, EV charging infrastructure, industrial controls, 5G communication hardware and server power supplies.

MAIKE Magnetics holds ISO 9001 and ISO 14001 certifications, alongside the UL- recognized Class 155(F) Electrical Insulation System per ANSI/CAN/UL 1446 for U.S. and Canadian markets. The 155 °C- rated system ensures reliable thermal performance for custom transformers and inductors in high- temperature industrial, renewable- energy and EV- charging applications. Products also comply with RoHS, TUV, VDE, CE and EMC international standards.

Beyond component supply, MAIKE operates a collaborative engineering model. Internal magnetic- design and senior power- supply engineers work side- by- side with customer teams for co- development and power- supply debugging. MAIKE delivers complete end- to- end turn- key support ranging from initial concept, custom magnetic design, simulation verification, prototype validation through to full- scale mass production.

Through its group- affiliated sister company Star Fortune Electronics, MAIKE expands its offering to export- grade power modules, leveraging proven technical expertise accumulated from domestic high- reliability mission- critical projects. MAIKE provides complimentary design proposals for custom magnetics requirements and supports partners across every stage of product development. MAIKE balances compact form factor, low parasitic loss, high efficiency and cost- effective manufacturability for each custom project.

MAIKE Magnetics is pleased to be a member of PSMA. The company values industry collaboration and knowledge- sharing across the power- electronics community to advance magnetic- component technology. We welcome PSMA members and power
electronics engineers worldwide to discuss new and challenging magnetic- component requirements.

MORE THAN MAGNETIC COMPONENTS

ADD VALUE TO YOUR POWER ELECTRONICS

For more information about MAIKE Magnetics, please visit our website at https://www.maikecn.com.

HEIONTEC turns ambient heat into power for ultra-low-power electronics

A new thermo-electrochemical cell concept addresses one of distributed electronics' most persistent system-level problems: how to supply tiny amounts of power for years without wiring or repeated battery service.

ndustrial sites, buildings and infrastructure are gaining ever more wireless sensors and connected devices. Yet every new measurement point also creates a power-supply problem. Cabling limits placement and adds installation cost; primary batteries move the burden into maintenance, replacement logistics and waste. In many ultra-low-power applications, the battery itself is inexpensive, while the service visit required to replace it is not.

HEIONIT GmbH, operating under the HEIONTEC brand, is developing thermo-electrochemical generator cells – TEC-G cells – for this gap. Founded in Germany in 2022, the deep-tech company is working toward application-specific cells that convert ambient and low-grade heat directly into electrical energy. Unlike a conventional thermoelectric generator, the concept does not depend on maintaining a permanent temperature difference between a hot and a cold side.

A TEC-G cell contains two electrodes and a proprietary active material. When an electrical load closes the circuit, electrochemical processes drive electrons through the external load and the cell cools. During regeneration, the cell absorbs heat from its surroundings and moves back toward its initial state. It is therefore a thermally driven cyclic source rather than a conventional battery whose active material is progressively consumed.

For power-electronics engineers, the relevant design object is the complete energy-harvesting chain: TEC-G cell, power-management IC, buffer element and load. Many sensor nodes spend most of their time asleep and need a short burst of energy only for measurement and wireless transmission. A buffer capacitor or other storage element can decouple that pulse demand from the cell's lower average output, while the PMIC manages voltage conversion, cold start and the cell's discharge and regeneration phases.

"Our aim is not to replace every battery. We want to eliminate the battery where the electronics need very little power but servicing that battery is disproportionately expensive." – Andreas Heine, Founder and CEO of HEIONTEC

Current development is focused on the micro-watt to low-milliwatt domain. In laboratory configurations, HEIONTEC has demonstrated an output of approximately one microwatt per gram of active material, together with higher short-duration output depending on cell design and operating conditions. The primary engineering work now concerns material-specific power, internal resistance, cycle stability, regeneration behavior, lifetime and repeatable manufacturing.

The first target applications are wireless sensors and other ultra-low-power electronics in industrial monitoring, building automation, infrastructure and environmental sensing. The strongest use cases combine a very low average load with high maintenance cost, difficult access or a requirement for long unattended operation. HEIONTEC is not positioning TEC-G as a general replacement for high-power batteries; the value lies in matching cell, electronics and duty cycle to a specific application.

The product strategy reflects that application-driven approach. HEIONTEC is focusing on pouch cells, whose flexible geometry and scalable material volume allow the cell design to be matched to the energy requirements and available installation space of a specific device. The company follows a fabless model and works with specialist partners for material synthesis and cell production. In July 2026, HEIONTEC announced a strategic technology partnership with Celtrix GmbH, a Fraunhofer spin-off, to manufacture initial pouch-cell prototypes and prepare the transition toward pilot and scalable production.

The technology is moving from laboratory validation toward externally tested prototypes and OEM pilot projects. HEIONTEC collaborates with universities, research institutions and industrial partners in Germany and the United States. Its development roadmap deliberately treats independent performance and lifetime validation as a central milestone, alongside the scale-up of the active material and cell-manufacturing process.

Membership in PSMA is particularly valuable because commercial success will be decided at the interface of electrochemistry, power management and system design. HEIONTEC is interested in exchange with energy-harvesting IC developers, sensor and electronics OEMs, test laboratories and manufacturing specialists. Common measurement methods and realistic duty-cycle profiles will be essential for comparing solutions and translating cell data into dependable system performance.

HEIONTEC welcomes discussions with PSMA members developing ultra-low-power electronics or looking for battery-reducing power architectures in demanding applications. More information is available at www.heiontec.com/en.

If you or anyone in your company is interested in getting on the distribution list for future issues of PSMA UPDATE, please send e-mail to: power@psma.com. Be sure to include your name and the name of your company.