Passives

Bourns has added 20 Multifuse polymer PTC resettable fuses in 1206 packages to its circuit protection portfolio, the Model MF-NSMF series. The new higher power rated fuses provide expanded over current/over temperature protection selection options in the compact 1206 footprint to save board real estate or to reduce design size and costs. The latest additions to the portfolio use the ...

A single capacitor can influence the lifetime and quality of entire electronic devices. These components wear out relatively easily and are used in virtually all circuits, including power supply modules, filters and voltage converters. Therefore, it is worth getting familiar with a range of brand-name components, such as Panasonic products, designed to ensure long-lasting and reliable operation. Nowadays, it is ...

Kyocera AVX has announced a range of high-capacity supercapcitor banks with low leakage. “SCM Series supercapacitor modules are rated for operating temperatures from -40°C to +65°C and lifetimes that extend to millions of cycles,” according to the company. “They are also lead-free compatible, RoHS compliant, and compliant with the UL 810A standard for electrochemical capacitors.” Initially there are five versions: ...

Eaton has introduced a pair of 500F sealed supercapacitor banks, replacing its earlier XLR-16R2507-R, according to component distributor Rutronik, which is stocking the new parts. They are: The 16.2V XLR16R2507B-R, which can store up to 18.2Wh and deliver up to 38.6kW or 2.19kA peak (9.6kA shorted, 121A continuous). Maximum ESR is 1.7mΩ and 5.2mA leakage is expected. The 18V XLR-18R0507B-R ...

Bourns has introduced a series of gas discharge tubes for protecting equipment against high-voltage surges. The bidirectional GDT28H series has devices with breakdown voltages from 1 to 3.3kVdc, and all are 8mm in diameter and 6mm long, with out without axial leads. Picking the nominally 2kV GDT28H-200 as an example, breakdown is between 1,600 and 2,400V (100V/s). Arc voltage is ...

Cornell Dubilier has introduced supercapacitor modules for use at 9, 18 or 30V. “The DSM series modules are offered in packs with 3, 6 or 10 cells in series, and capacitance values range from 0.15 to 36.6F,” according to New Yorker Electronics, which is stocking the parts. “Unlike lithium-ion batteries, there is no charge-discharge cycle degradation and no risk of ...

Bourns has announced a AEC-Q200 compliant, automotive grade semi-shielded power inductor series that operates across -40 to 150°C. SRN8040HA inductors are constructed using a “silicon-based coating that offers magnetic shielding”, according to the company. They “are designed to release lower magnetic field radiation compared to non-shielded inductors, and are a more cost-efficient alternative to fully shielded ferrite-based inductors”. The data ...

Stackpole is offering 0.01% 2ppm/°C precision surface-mount resistors in sizes from 0402 to 2512 (1 x 0.5mm to 6.3 x 3.1mm). Part of its RNCF range, these highest spec parts don’t come in the wide value range of lesser RNCF resistors. For example: 0402 types are available between 49.9Ω and 4.99kΩ, then 2512 has the widest span of options,  between ...

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 ...