The parts, branded ‘KC-Link with Konnekt’, feature multiple separate ceramic capacitors bonded together using a copper-tin alloy by a process dubbed ‘transient liquid phase scintering’ (TLPS) – see diagram.
“High mechanical robustness allows KC-Link capacitors with Konnekt to be mounted without the use of metal lead frames,” said the company. “This design provides low effective series inductance, increasing the operating frequency range.”
The dielectric is C0G, a stable material with no change in capacitance versus dc voltage and negligible change in capacitance versus temperature.Mounting is possible in a choice of orientation, with the ‘low-loss orientation’ (see diagram right) lowering ESR (four-high effective series resistance <1.1mΩ) and ESL (four-high effective series inductance <0.45nH) to increases ripple current handling capability and reduce power loss. Tape-and-reel options allow the same parts to be delivered in different orientations for pick-and-place manufacturing.
Designed for an operating temperature range up to 150°C, the capacitor can be mounted close to hot fast-switching semiconductors in high power density applications.
Depending on values, the capacitors are stacked two, three or four high. The four-high parts are ~ 10 x 10 x 10mm.
In a nutshell
44nf (1.7kV) to 880nF (500V) available (±10%) – see chart
−55 to +150°C operation
<2.5mΩ ESR
The parts are available in commercial grade with tin termination finish – Pb-Free, RoHS and REACH compliant.
Applications are foreseen in power converters, inverters, snubbers and resonators – in LLC resonant and switched tank converters – in electric vehicle (motor drive, charging), aerospace and medical markets.
Source: This news is taken from www.electronicsweekly.com
