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SMD power inductors come with the highest reliability rating currently available API Delevan now offers three SMD power inductors with the highest reliability rating available after achieving a “T” Level reliability rating. The MILP1812, MIL4922 and MIL8532 meet all Military QPL requirements, and the ruggedized moulded and leaded construction is proven against MIL-STD-202 mechanical vibration, moisture resistance, and DWV testing. All “T” Level inductors are thermally shocked for 25 cycles, burned-in for 96 hours, and x-ray inspected before customer delivery. High-saturation ferrite core materials and thick AWG size wire offer these inductors higher operating power along with maximum operating efficiency, resulting in a cooler running product. API Delevan www.delevan.com Additive photolithographic process yields micro flex circuits with 5μm feature resolution Using additive photolithographic processes, Metrigraphics is able to manufacture Extreme Resolution Micro Flex (ERMF) ultra-miniature passive circuits and structures with traces and spaces as small as 5μm. The circuits can also be delivered in complex, high-resolution shapes and patterns for medical sensor applications, including various in body and fluid sensors. The micro circuits are produced with very thin layers of sputtered metal or thicker plated metal such as gold or copper. The company reports that its processes can achieve traces as narrow as 3μm for some designs. Metrigraphics offers both single and multilayer ERMF circuits. Multilayer circuits include additional conductive layers that are independently stacked, aligned and interconnected. Plated conductive vias connect the different layers as required. Via sizes can be down to 25μm diameter. Metrigraphics www.metrigraphicsllc.com TDK further shrinks common-mode chokes for CAN and FlexRay For deployment in both CAN and FlexRay data bus environments, TDK has developed the ACT1210 series of commonmode chokes. Measuring only 3.2x2.5x2.4mm, the chokes are the world’s smallest, claims TDK, taking 45% less PCB space than that of existing components. Rated for a wide operating temperature range from -55 to +150°C, the ACT1210 series offers high heat resistance and reliability, making it suitable for use under severe conditions such as those encountered in the engine compartment of a vehicle. The ACT1210 common-mode chokes employ an improved ferrite and is based on the joint technology competence of TDK and EPCOS in the area of EMC. Thanks to the structural design of the new series, the components are manufactured using a high-precision autowinding process. TDK www.tdk.com High directivity couplers for WiFi bands AVX has introduced a series of integrated thin film (ITF), high directivity, directional couplers for WiFi bands. Available in 0302, 0402, & 0603 sizes, the LGA couplers offer excellent high frequency performance across WiFi bands, 2,400-5,950 MHz Using Land Grid Array (LGA) packaging, the 0302, 0402, and 0603 sizes all provide identical electrical performance; the 3W couplers exhibit high directivity (20 dB), low parasitics, improved heat dissipation, and self-alignment during reflow. The couplers are rated for -40°C to +85°C and feature RoHS-compliant, 100% tin terminations that are compatible with automatic soldering technologies, including: reflow, wave soldering, vapor phase, and manual. Finished parts are 100% tested for electrical parameters. AVX www.avx.com Automotive-qualified passives Murata has extended its automotive qualified MLCC offering with addition of AEC-Q200 and ISO7637-2 parts Added to Murata’s AEC-Q200 qualified multi layer ceramic capacitors (MLCC) aimed at automotive applications are the RCE and RHE series radial leaded MLCCs that fully conform to the automotive environmental stress test requirement AEC-Q200 and conducted surge pulse immunity specification ISO7637-2. The RCE series comprises capacitors in the range 1 pF to 22 μF and working voltage from 25 to 1 kV. Operating temperature range is up to 125C. With an operating temperature up to 150°C the RHE series devices are available with 50 to 100 VDC working voltage and capacitance values from 100 pf to 10 μF. The RHE series is guaranteed to operate in temperatures up to 170C for 100 hours when a temperature mission profile is agreed with Murata in advance. Murata Europe www.murata.eu 2W-rated chip resistor from 0.1 Ohms up to 1MOhm with low self-heating The RHC2512 from Stackpole is a high power 2W-rated 2512 size chip resistor claimed to have a much lower heat rise compared to other high power chip resistors currently available. Stackpole uses a unique set of materials, part design, and manufacturing processes to lower the self-heating of the part by at least 30 degrees C. The RHC2512 is available in values from 0.1 Ohms up to 1M Ohm in 1% and 5% tolerances and TCR of 100 ppm. The RHC Series can be used in a wide range of applications, including professional, commercial, and industrial power systems; control systems; and industrial and commercial automation. Stackpole Electronics www.seielect.com www.electronics-eetimes.com Electronic Engineering Times Europe January 2014 37


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