Capacitor

Thanks for the help with the mystery tantalum capacitor on the Jay Electronics motor controller board – that is on its way to the bin as a consequence. Now that I am properly worried about capacitor failure, I have taken photos of two of the capacitors on the same board (plus the lovely new electrolytic replacement already installed – bottom ...

Can anyone read the marking on this mystery tantalum capacitor? It is from the mid-1980s motor Jay Electronics driver board (hopefully) undergoing resurrection. Of three capacitance meters here, only one will make a stab at it in-circuit, where it reads ~600nF either way around. V47 seems an odd marking.

Vishay has introduced 1, 2 and 3kV multi-layer ceramic capacitors for commercial applications. In seven case sizes from 1206 to 2225, they are made with either C0G (NP0) or X7R dielectric. C0G types are rated at 2kVdc or 3kVdc and come in values between 1.5pF and 82nF, with a temperature coefficient of 0±30ppm/°C from -55 to +125°C. X7R types are ...

TDK has introduced Class-X2 EMI suppression capacitors that are 20% smaller and more humidity resistant than its previous offerings. Called B3292x, the series meets Grade III Test B for temperature, humidity and bias, and range from 18 x 5 x 10.5mm to 42 x 14 x 25mm  as values increase from 0.1 to 4.7µF. “To meet Grade III Test B, ...

Wurth is offering vibration-resistant versions of its surface-mount aluminium electrolytics and aluminium hybrid polymer capacitors. “SMT components are often not the best choice because, without special adaptations, they may not withstand the prolonged vibration stress,” said the company .” However, making electronics vibration-resistant does not necessarily require special connection techniques like press-fitting. Thanks to their enlarged solder pads and thicker ...

Vishay has slotted 350, 500, 550 and 600V four-terminal aluminum electrolytic capacitors into its 299 PHL-4TSI snap-in family “greatly expanding the range of capacitance-voltage combinations available to designers of power supplies and industrial and home appliance inverters”, according to the company. With a cylindrical aluminum cases (with pressure relief) from 35mm in diameter by 50mm tall to 45 dia by ...

Murata has opened a 200mm silicon capacitor manufacturing line at the French campus it acquired with IPDiA in 2016. “With the launch of this new line, we are continuing to invest in growing our production facilities and our local workforce,” said Murata Manufacturing president Norio Nakajima (picured). “It represents a significant step forward in our growth in the sector and ...

TDK has introduced a series of high-value metal-framed multi-chip ceramic capacitors for automotive electric power trains, on-board chargers and wireless power transfer systems, where the capacitors must handle high currents or voltages, or have high capacity. “To meet these needs, TDK developed the CA series, the largest MLCCs in the industry [6 x 5.6 x 6.4mm] with a metal frame ...

Kyocera AVX has released low-ESR C0G/NP0 dielectric RF MLCCs (multi-layer ceramic chip capacitors) “inspired by communications market demand for smaller RF capacitors that deliver repeatable performance”, it said. Called KGU, they come in values from 0.1 to 100pF with tolerances as low as ±0.05pF. They come in four chip sizes: 01005, 0402, 0603 or 0805 (EIA). Class I C0G, also ...

Nanusens has demonstrated a mems digitally-tuneable capacitor for 5G and 6G RF front-ends, that is compatible with CMOS IC processing and can be integrated with circuitry. The Q-factor is above 100 at 1GHz, and the four-bit capacitor has a minimum capacitance of 450fF (30fF/capacitor) with them all off and tunes up to ~1pF – a capacitance ratio of 2.2 which ...