Germany-based electronic parts supplier, KOA Europe has announced its new HVD - series from KOA which is suitable for dividing of high voltages in EV and HEV applications.

Surge protection is becoming essential for all circuit designs. With the SG73 series, KOA offers a resistor series which has approximately ten times higher pulse handling capability compared to standard flat chip resistors. Due to this pulse load capability these are suitable for protection of electronic circuits against extreme pulses and surges. These resistors are available with ±10% or ±20% resistance tolerance.

  Electronics parts supplier based in Germany, KOA has introduced two new series of four terminal current shunts for high current applications.

  The new CFWS-series of fusible power wirewound resistors is now available from KOA. In normal operation the CFWS series resistor acts as an inrush current control resistor but will safely fuse in specified power overload cases. The CFWS series is available with 3 or 5W power ratings. Both power ratings are approved to UL1412.

  KOA’s UR73V-series thick film low ohm resistors are designed for current detection, especially in demanding environments. The special facedown construction makes lower resistance values with a low T.C.R. possible. 

KOA’s UR73-series thick film shunts are designed for current detection, especially in demanding environments. The special facedown construction makes lower resistance values with a low T.C.R. possible. Compared to KOA’s existing UR73-series the new UR73V-series has an even better T.C.R. and its wide operating temperature range of -55 to +155°C makes it suitable for applications such as automotive or hi-rel DC/DC converters.

KOA’s UR73D-series thick film shunts are designed for current detection in power supplies, motor control and industrial automation applications. The special face down construction (mounting of the resistive element on the lower face of the component) yields low T.C.R. ratings for this series. The resistors are designed for operation from -55°C to +125°C.

KOA’s special anti-sulfuration resistors are intended to be used under harsh environment with high level of contamination. KOA’s anti-sulfuration chip resistors apply high reliable material to the inner top electrodes. This material is a new development and has extremely high sulfuration-proof characteristics.

KOA has today declared that it has been awarded a 2011 Total Cost of Ownership Supplier Award from Celestica. Celestica's awards program recognizes suppliers that support Celestica's TCOO sourcing strategy to provide its customers with the best possible supply chain solution for their products.

The new TLRH power shunt developed by KOA is now available in the sizes 2512 inch with a power rating of 2W, 2010 inch with 1W power rating and 0805 with 250 mW power rating at distributor Rutronik. Its enhanced power rating is the result of the sandwich construction. The metal plate carrier laminated on top of the resistive layer acts as an efficient heat sink and avoids hot spots.

KOA expands its range of ultra flat power inductors. The PL inductor series with ferrite core features a maximum height of 0.5 mm. The new size 1008 inch (2520 metric) covers the inductor values from 0.33 µH up to 4.7 µH. Due to the very low ohmic DC resistance down to 0.06 Ω, the allowed current goes up to 1100 mA, despite its very small dimensions.

KOA has introduced the new LT73V thermal sensor. The product is targeting the Automotive market, with its thin film technology providing high accuracy at low cost. The LT73V also guarantees high reliability and stability over time.

The WK73 wide terminal resistor is now available in size 1206 (3216 metric). The 90° rotated design has several advantages compared to standard resistor footprints. The 3 times higher power rating of 750mW is the most visible. It is based on the improved heat dissipation through the solder joint. The much higher terminal strength of the WK73 relates to the bigger solder pad. Additionally the lower distance between the terminals results in less e...

The CCF-UM is a Universal Modular Fuse (UMF) with fusing characteristics according to IEC standard 60127-4, with current ratings from 400 mA up to 6.3 A. Its voltage rating is equal for AC and DC at 125 V. The circuit protector provides a high breaking capacity of up to 63 A at 125 V, and provides superior anti surge characteristics. KOA’s long experience and original technology guarantees stable fusing characteristics.

KOA has expanded its RN73H series of high precision thin film flat chip resistors with size 0402 and higher ohmic values in all other sizes. The RN73H series provides excellent long term stability, typically below 0.05% resistance change over 1000 hours. The typical resistance change due to soldering heat is below 0.01%.

KOA has developed flat chip resistors with extremely high resistivity against sulphurated environments, high humidity and high temperature. The enhanced structure is based on a metal glaze thick film. Tests in H2S environment showed an outstanding performance compared to standard products.

The requirements on product reliability in the automotive sector are among the toughest in industry. Targeting these demands KOA introduced the chip Varistor series NV73DL for automotive applications. The complete AEC-Q200 test data is available now for the new Varistor series.

The need for miniaturization, increased reliability and operation at elevated ambient temperatures has driven the development of ceramic based substrates and packages for electronics. Due to rising demand KOA offers foundry services to their customers to provide LTCC substrate solutions for various applications. LTCC stands for “Low Temperature Co-Fired Ceramic”.

Ulli Lochmann, President and General Sales Manager of KOA Europe GmbH in Dägeling, will resign from his duties for personal and private reasons. His successor as President will be Yuji Iwasa, formerly Executive VP KOA Europe. Mr. Iwasa will be supported by Sabine Wagner, appointed Executive VP for Business Planning, and Dr. Arne Albertsen, who will be in charge of the Sales & Marketing, the Design-in and the Customer Service as new General Sales...

The needs for miniaturization, increased reliability and operation at elevated ambient temperatures have driven the development of ceramic based substrates and packages for electronics during the past decade. Among other technologies, LTCC have proven their superior performance in many applications, comprising high temperature automotive as well as high reliability medical and high frequency communications applications. Another application area i...