KNI Capacitors from Iskra for Power Electronics
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Polypropylene film capacitors for AC and AC/DC filtering applications requiring high current capability and long service life.
In power electronics, filtering is a critical function for maintaining the intended system performance. AC filter capacitors are used in low-pass LC input and output filters, while AC/DC capacitors can be used in both AC and DC applications.
For these applications, Iskra offers the KNI range, based on polypropylene film technology and designed for systems where current, losses, and component reliability are key factors.
KNI Capacitors: AC and AC/DC Filtering Families
KNI5048: General-Purpose AC/DC Capacitors
The KNI5048 series is designed for AC/DC applications and offers a rated capacitance range from 10 µF to 600 µF, with tolerances of ±5% and ±10%. It is available for rated RMS voltages of 250, 330, 480, and 690 V AC, with an operating temperature range of -40 °C to +85 °C.
Its construction uses polypropylene film, vacuum-deposited metalized electrodes, a cylindrical aluminum housing, and an overpressure disconnector. The manufacturer also specifies self-healing properties and an expected service life of at least 100,000 hours under the stated conditions.
KNI4051 and KNI4053: AC Filtering
The KNI4051 and KNI4053 series are designed for AC filtering, with single-phase or three-phase delta connection. They offer capacitance values from 3×8 µF to 3×200 µF, a rated RMS voltage of 450 V AC, a frequency of 50/60 Hz, and an operating temperature range of -40 °C to +85 °C.
Key features include high ripple current capability, low losses, self-healing properties, and high reliability. The documentation also specifies an overpressure disconnector suitable for PFC and LCL filters.
Applications and benefits
The KNI families are suitable for switch-mode power supplies (SMPS), solar and wind power plants, frequency inverters, and UPS systems.
The result is a range designed to address specific filtering requirements in power electronics, combining polypropylene film, high ripple current capability, and a construction designed for long-term operation.
RC Microelectronics, your partner for ensuring supply continuity
At RC Microelectrónica, we help manufacturers, R&D teams, and purchasing managers identify the most suitable solution for each design. If you are selecting a capacitor for a filtering application or need to determine which part number best fits your project requirements, contact our technical and commercial team.
Contact RC Microelectronics to receive technical support, guidance in selecting the most suitable part number, and assistance during the qualification of a reliable alternative that guarantees supply continuity for your projects
