TDK Corporation (TSE:6762) unveils the EPCOS EP9 series (ordering code: B82804E), which is more compact than the existing E10EM series of surface-mount transformers designed specifically for IGBT and FET gate driver circuits. Engineered for high performance in demanding e-mobility and industrial applications with 500 V system voltage, these components offer exceptional insulation, minimal coupling capacitance, and high thermal resilience. With this new series, TDK is driving the green transformation towards a more electric and sustainable future.

The EP9 series is built on a MnZn ferrite core with SMD L-pin construction, delivering a height of just 11 mm and a footprint of 13 x 11 mm. These transformers operate across a wide temperature range of −40 °C to +150 °C, ensuring durability under harsh conditions. With a coupling capacitance of only 2 pF, complying with the AEC-Q200 Rev. E standard, and creepage and clearance of at least 5 mm, these surface-mount components are generally used in automotive applications and other demanding environments.

The transformers support topologies such as half-bridge and push-pull converters with typical operational frequency of 100 to 400 kHz and turns ratios optimized for specific applications. These components are available in tape-and-reel packaging, ensuring ease of assembly for high-volume production environments.

A sample kit is available under order number B82804X1, containing six transformers of each version.

TDK Corporation (TSE:6762) announces two new additions to its high-voltage contactor portfolio for harsh environments: the HVC43MC with integrated mirror contact and the HVC45 with enhanced short-circuit current handling capability. These new contactors for up to 1000 V (DC) enable reliable switching of lithium-ion batteries in traction applications, energy storage systems (ESS), and DC charging stations. These components underscore TDK’s dedication to enabling the transition to a greener, more electrified future.

With an integrated mirror contact according to IEC 60947-4-1, the HVC43MC enables safe detection of the main contact's position. This mechanically linked auxiliary contact provides reliable feedback about whether the main contact has opened or closed, enhancing system safety monitoring. The contactor can handle continuous currents up to 250 A and cut-off currents up to 450 A at 1000 V (DC) and 2000 A at 450 V (DC), respectively, all in a compact package measuring 74.5 x 78 x 40.5 mm.

With a short-circuit current handling capability of up to 12 kA for 5 ms, the HVC45 sets an industry benchmark, surpassing conventional solutions in its size class that typically achieve 8 to 10 kA. This enhanced capability addresses the requirements of modern high-energy-density batteries that can achieve higher short-circuit currents. The contactor can handle continuous currents up to 300 A and features a maximum cut-off rating of 900 A at 1000 V (DC) and 2200 A at 450 V (DC), respectively.

Both series incorporate TDK's proven gas-filled ceramic arc chamber technology and bidirectional switching capability, allowing current flow in both directions. The contactors are available with 12-V or 24-V coil voltages and are certified to CE, UKCA, and UL standards, supporting worldwide deployment.

TDK Corporation (TSE:6762) launches the EPCOS SurfIND series, a new range of current-compensated ring core double chokes for high currents and surface mounting (ordering code: B82725S2*A/B). With SurfIND, customers who prefer reflow soldering (e.g. sandwich packages in telecom equipment, industrial drives, etc.) but need high-current common-mode chokes (usually large and heavy) can now get an SMD solution. These components can filter common-mode noise for rated currents from 24 A to 36 A at a temperature of +70 °C. With additional cooling, even higher currents can be achieved. This is easy to implement as the top side can serve as a direct interface for a heat sink.

For applications with a voltage of up to 250 V (AC), the nominal inductance ranges from 120 µH to 820 µH across seven variants. With stray inductance of up to 1% of the nominal inductance, these chokes also dampen differential-mode noise. All components meet IEC/EN 60938-2 standards and share a compact footprint of 40 x 38 mm (L x W), with heights of 20.7 mm for A types and 22.3 mm for B types. Their typical resistance ranges from 0.78 mΩ to 2.21 mΩ. Rated inductance drops by less than 10% at rated current with DC magnetic bias at +20 °C.

SurfIND chokes are mounted on a plastic baseplate, with a ferrite core coated in epoxy to insulate it from the windings; both materials are UL 94 V0 approved. The special design of the connection wiring eliminates the need for adhesives while self-leading SMD leads ensure easy reflow soldering to PCBs.

• Industry’s first* to achieve 30 dB common mode attenuation at 10 GHz
• Achieving 20 GHz or greater cutoff frequency and compatibility with high-speed signals
• Optimal design allows for significant noise control at USB 3.2 and USB 4

TDK Corporation (TSE:6762) announces the development of its TCM06U series of small thin film common mode filters for noise reduction in high-speed differential transmission (0.65 x 0.5 x 0.3 mm - L x W x T). Mass production of this new common-mode filter began in August 2024.

Laptops, tablets, game consoles and other digital devices increasingly offer convenient expandability, with higher display resolution and functionality. Their transmission signals are also becoming faster and larger in capacity every year. At the same time, electromagnetic interferences (EMI) from devices have increased in frequency and amplitude. Therefore, action needs to be taken to control the impact on other devices and the qualitative deterioration of transmission signals. As a measure against EMI, TDK has launched a common mode filter for high-speed differential transmission at high frequencies. This will support the miniaturization, thinning, and weight reduction of electronic devices.

It is compatible with a 20 Gbps high-speed signal at cutoff frequencies of 20 GHz or higher. Common mode attenuation at 10 GHz is 30 dB or higher, which is effective in controlling high-frequency noise. Impedance matching within a range between 85 and 90 Ω controls the reflections in high-speed USB lines. The internal coil conductor pattern is designed using TDK’s proprietary fine patterning, which uses a thin-film production method and applies a technology cultivated by the development of TDK’s magnetic heads.

To control radiation and exogenous EMI in the differential transmission lines that are expected to increase in speed in the future, TDK will continue to develop small thin-film common mode filters and provide services contributing to the quality improvement of transmission signals.

* As of August 2024, according to TDK (Model: TCM06UX-020-2P-T201)

TDK Corporation (TSE:6762) introduces tube magazines for several ring core chokes series as an alternative packaging to the blister tray in a cardboard box. Tube magazines provide a reliable, efficient, and automated way to handle and supply components in a production line, which is crucial for maintaining high throughput and quality in manufacturing processes. The table below shows which component series these are, and which are already available or coming soon.

Components within a tube magazine are typically aligned in a consistent orientation. This makes it easier for the automated pick-and-place machinery to identify and handle each component correctly, reducing the likelihood of errors during placement. Tube magazines can be easily integrated with automated feeders which can push components out of the tube one at a time, ensuring a steady supply of parts to the pick-and-place machine without manual intervention. Keeping components in a tube magazine protects them from physical damage that could occur during manual handling. Many automated pick-and-place machines are designed to work seamlessly with tube magazines, ensuring smooth and efficient operation. The standardized design of tube magazines allows for quick setup and changeover between different production runs.

TDK Corporation (TSE:6762) announces the new EPCOS B43659 series of snap-in aluminum electrolytic capacitors. This is the next generation of ultra-compact general-purpose components for voltages of 450 V (DC) featuring an extremely high CV product. It provides the same features and serves the same applications as the previous series; however, the B43659 is much more compact. In case sizes of only 22 mm x 25 mm to 35 mm x 50 mm (D x H), these components achieve capacitances ranging from 140 µF to 1030 µF. In addition to the standard versions with 2 terminals, versions with 3 terminals are also available to ensure correct installation.

Essential performance features include a high ripple current capability of up to 7.01 A (120 Hz, +60 °C) and a service life of at least 2000 h at a maximum operating temperature of +105 °C. Accurate lifetime calculation under application-specific conditions is quick and easy with the web-based AlCap Tool (www.tdk-electronics.tdk.com/en/alcap_tool).

Due to their high reliability and compact size, these RoHS-compliant aluminum electrolytic capacitors can be used in a wide range of applications, such as switched-mode power supplies, frequency converters, uninterruptible power supplies (UPS), medical equipment, and solar inverters.

• High safety and reliability for automotive use based on unique design expertise
• The high-frequency properties equal or superior to the conventional products are realized using an original internal structure developed by TDK
• Multilayer method allows for a lineup with fine increments of inductance
• Offers a wide operating temperature range of -55 to +125 ℃

TDK Corporation (TSE:6762) has announced the introduction of its new MHQ1005075HA series of inductors for automotive high-frequency circuits. This product uses the same materials and construction methods as the conventional product, while applying TDK's proprietary design expertise to the internal structure from the perspective of fail-safe design. The series is 1005 size (1.0 × 0.5 × 0.7 mm - L x W x H), and the inductance ranges from 1.0 nH to 56 nH. Mass production of the product series began this month, February 2024.

Inductors for high-frequency circuits for automotive or infrastructure use must meet higher standards for safety and reliability, designed based on AEC-Q200.

The product leverages TDK's one-of-a-kind design expertise in the design of the internal structure to realize the high-frequency properties equal or superior to conventional products. For example, the inductor’s internal structure is designed to reduce the chances of an open failure due to cracks in the mount points of the component. Combined with automotive circuit board manufacturing guidelines, the TDK MHQ1005075HA inductor can deliver a sizable increase of reliability in an automotive environment. TDK will further expand its line to meet the evolving needs of customers.