The HPL Series of power inductors for automotive applications is a low inductance product, developed by TDK using proprietary ferrite materials and coil structure.
It is characterized by its ability to handle large currents with high efficiency, making it ideal for circuits requiring large currents, such as ADAS image processing circuits. Additionally, due to its unique structure with no connection points, it ensures high reliability with reduced risk of open defects.
In this article, we will explain the structure, features, and applications of the HPL Series in an easy-to-understand manner that is useful for everyone.

TDK Corporation (TSE:6762) presents new series of extremely compact TVS diodes with parameters matched to the various ports of the USB-C port as well as other high-speed interfaces. TVS diodes with very low parasitic capacitance values and low clamping voltage are required especially for the high-speed ports (Tx / Rx) of USB-C, which operate at up to 40 Gbit/s with USB4 version 1. The B74111U0033M060 and B74121U0033M060 types are suitable for this purpose, with very low capacitance values of 0.48 pF and 0.65 pF at 1 MHz, respectively, which means that signal integrity is not compromised. The clamping voltages are only 3.8 V or 3.9 V with an ITLP of 8 A. The protection devices are designed for ESD discharge voltages of up to 15 kV. These TVS diodes are manufactured in the extremely compact WLCSP 01005 and WLCSP 0201 packages and are extremely flat with heights of 100 µm and 150 µm respectively. This means that the TVS diodes can also be integrated into USB-C SIP modules.

The NTCRP series is a small and highly precise temperature sensor with a high degree of versatility, capable of withstanding temperatures up to 200℃, and housed in a PPS resin case. While thermocouples are sometimes used as the temperature sensor, the NTCRP series, which utilizes small and inexpensive NTC thermistors, is ideal for temperature control in applications such as automotive drive motors and industrial servo motors. The robust PPS case is a highly reliable product that can be used without issue even in high-temperature oil and vibration-heavy environments.

The technology that delivers the metaverse will build on the technology for virtual reality, using more sensors, and more different kinds of sensors. TDK has one of the richest sensor portfolios in the industry, extensive software expertise, and excels at sensor fusion.

TDK Corporation (TSE: 6762) introduces with its B84143C*S250/S251 series the new EPCOS 3-line EMC filters for converter applications with high currents. Depending on type, they are designed for rated voltages of 305/530 V AC and 440/760 V AC (50/60 Hz) at rated currents of 160 A to 2500 A. One particular performance characteristic is their very high attenuation figures which are achieved in the range of 9 kHz to 150 kHz. In order to meet the requirements of UL in switch cabinet construction, the complete filter series has been designed for an SCCR (Short Circuit Current Rated) value of 100 kA.

TDK’s Trusted Positioning business unit was formed from a world class team of innovators that have been solving some of the most difficult positioning problems for decades. The team, located in Calgary, Canada is comprised of experts in inertial navigation, dynamic motion mechanics, geomagnetic positioning, GNSS, BLE, Wi-Fi and other wireless positioning techniques.
TDK Trusted Positioning offers 4 software products to address positioning needs; TRACK, RIDE, AUTO and VENUE.

In recent years, switching speed of DC-DC converters has increased as the switching frequency has become higher. As a result, high-frequency noise is generated when inductance and stray capacitance of the wiring of board or inside IC resonate due to a sudden change in input current. The high-frequency noise can conduct to external circuits and cause abnormal operation of the set. This Solution Guide introduces examples of noise countermeasures using a three-terminal filter (feed-through filter for power lines) with low ESL, which is effective for noise countermeasures against noise generated on the input side of DC-DC converters.

The NTC thermistor is a thermally sensitive resistor whose resistance decreases rapidly as the temperature rises. This property can be utilized in various applications such as temperature sensors and thermal protection devices to protect circuits from overheating.
By mounting the NTC thermistor in close proximity to the heat source, it can accurately sense the temperature of the heat source. However, in some cases, such as when there are constraints on the size of the board or the pattern layout, it may need to be mounted in a location away from the heat source.
In this article, considering such conditions, we used the LEDs on the LED flash circuit board as the heat source and simulated heat generation to check the temperature difference between the LEDs and the NTC thermistors caused by the different mounting positions. We also checked the effect of circuit board thickness.

TDK Corporation (TSE:6762) presents the B82559A*A033 series of new shielded EPCOS ERU33 high-current chokes for through-hole mounting. Designed for very high saturation currents from 32 A to 83 A at 100 °C, the six new types cover a range of inductance values from 3.2 µH to 10 µH. DC resistances are as low as 0.85 mΩ or 1.2 mΩ, depending on the type. Thanks to the flat wire winding, the chokes have very compact dimensions of only 33 x 33 x 15 mm. By thermally connecting the flat wire winding to the core, the large ferrite surface can be coupled to a heat sink for effective heat dissipation. In addition to the standard types, customized variants with other inductance values can also be realized.

Traditionally, aluminum electrolytic capacitors and tantalum electrolytic capacitors have been widely used for smoothing and decoupling applications that require large capacitance. With increasing capacitance values, MLCCs are replacing various electrolytic capacitors in power circuits and other applications.
Replacing electrolytic capacitors with MLCCs offers various benefits such as space reduction due to smaller size and lower profile, reduced ripple voltage due to low ESR, and improved reliability due to reduced self-heating.
On the other hand, low ESR, which is an advantage of MLCCs, can sometimes lead to abnormal oscillation or anti-resonance. Additionally, high dielectric constant MLCCs (Class 2) exhibit a characteristic capacitance change when DC voltage is applied, so caution is necessary.
This guide explains the advantages and precautions to be taken when replacing electrolytic capacitors with MLCCs.