Long-life DC Link capacitors designed for harsh environments

26-07-2021 | New Yorker Electronics | Passives

New Yorker Electronics has released the Cornell Dubilier Electronics new BLH series film capacitors optimised for inverter DC Link Applications. The BLH series of DC Link capacitors have been created and tested to surpass the industry’s most stringent demands for high humidity, vibration testing and thermal cycling. Green energy and electric transportation systems have driven explosive growth in inverter markets.


The THB test reveals parts to the harsh conditions of 85C at 85% relative humidity with rated voltage applied. While most capacitor makers validate their THB components for 1,000 hours under these conditions, this series has been validated for 1,500 hours.


Employing the most advanced materials and processes, these board mounted capacitors have been created and tested to satisfy the rigours of automotive AEC-Q200 testing. Their solvent-resistant plastic case and epoxy encapsulation system are UL Recognised and meet IEC61071. Tin-plated copper RoHS-compliant terminations assure exceptional solderability. With their excellent resistance to moisture and robust design, these capacitors are ideal for solar, wind, UPS, EV chargers, and other inverter applications that can be subjected to wide-ranging environmental conditions.


The series is optimised for DC link applications in medium to high-power inverters. Capacitance ranges from 1µF to 170µF at 450-1,200VDC, with high RMS ripple current ratings up to 36Arms. When operated at a 70C hot-spot temperature with rated voltage applied, their life expectancy is 100,000 hours. Available with two or four-pin, the film capacitors offer a 10% tolerance standard with 5% optional. The case material is a UL94V-0 plastic, and the terminal material is tin-plated copper for best solderability. They vary in size from 32mm L x 18mm H x 9mm W to as much as 57.5mm L x 80mm H x 35mm W.

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