Passives

Liverpool-based defence electronics manufacturer MPE has certified its HEMP (high altitude electromagnetic pulse) protection filters to the latest defence standard, Mil-Std-188-125-1A “becoming the only manufacturer in the world to do so”, it claimed. Independent testing was by Jaxon Engineering and Maintenance of Colorado Springs (Jaxon team left). The filters span 16A to 1.2kA and including two, three and four-line options. ...

Laird Thermal Systems has created a series of multi-stage thermo-electric coolers for miniature optical packages. MSX Series have cold-side footprints down to 2 x 4mm, and thicknesses down to 3.3mm for two stages, 3.8mm for three stages and 4.9mm for four-stage coolers. It has the “capability to integrate them into various optical packages, including TO-39, TO-46 or TO-8”, according to the ...

Murata is offering a 4V 10μF ceramic capacitor with ±20% tolerance in a 0201 – 0603M package. “They are currently the smallest MLCC products on the market to deliver such capacitance levels,” claimed the company, “representing a 65% size reduction on the 0402 – 1005M products that would normally need to be specified. ” Called GRM035R60G106M, the parts a -55 ...

Premo has released a four-phase toroidal common-mode choke for EMC noise suppression in electric vehicle on-board chargers up to 22kW. 4CMCN065R0-32H measures 59mm in diameter, 41.5mm (plus pins) high and ~200g, and is nominally rated at 32A. All the windings have the same number of turns (8), but the one intended for the neutral of a three-phase mains circuit is ...

Panasonic has enhanced  the performance specifications of  its  ZT and ZC series of electrolytic Polymer Hybrid Capacitors with the AEC-Q200 qualified ZTU series, with exceptional reliability and ruggedness for any demanding application. “The ZTU series is setting new standards with its ripple current and capacitance specs and reliably guarantees circuit safety at one of the highest temperature ranges currently available ...

Stackpole’s RNCU 1206 thin film chip resistors can handle up to 1W and offer tolerances down to 0.1% and temperature coefficients down to 10ppm/°C. The AEC compliant parts have “excellent electrical and environmental stability, showing minimal resistance shifts over most industry standard tests and are anti-sulphur per ASTM-B-809-95 with shifts less than 1%”, according to the company. They are also ...

Premo has releases an integrated wound component package for automotive on-board LLC chargers rated up to 11kW. BCBM-11KW-004 combines 14:15 transformers and resonance inductors for three 3.6kW phases, taking in 400V and delivering 240-460V (<14.7Arms) when switched between 98 and 150kHz. The enclosure is 87(+lugs) x 38(+pins) x 158mm, and the parts inside are encapsulated. “The usage of specific thermal conductive ...

Murata has created a 1210 (3.2 x 2.5 x 2.5mm) wide-band wire-wound chip common mode choke that will attenuate noise on 1.2A automotive supply rails at over 1GHz. “It is of particular value when addressing the power supply line noise issues now occurring as driver assistance hardware connects with wide frequency band sensors and imaging equipment such as radar and ...

Bourns is aiming at high power density forward converters with a series of planar construction transformers. Called the PLN0xx-ED21 series, of them the company said: “Planar-style transformer components offer efficiency and power density advantages over conventional wire-wound transformer designs due to significantly reduced ac resistance losses.” Ratings vary across 48 to 70W with inputs from 33 to 57Vdc when switching ...

Stackpole has created through hole film resistors that can handle 10kV surges. “For applications with high voltage surge and low energy requirements, they are a viable replacement for carbon composition resistors, providing improved electrical and environmental stability, better tolerance and temperature coefficient, with better long-term availability,” according to the company. Covering values from 560kΩ to 12MΩ, the 10kV surge-rated resistors ...