Increase inverter life and reliability with new 1,500-hour 85/85 THB Capacitors

02 November 2021

Long life, inverter-grade film capacitors for harsh environments with 1,500-hour 85/86 THB ratings.

Designed to perform in harsh environments, Cornell Dubilier’s new ALH and BLH series of metalized polypropylene capacitors offer 50% greater life than competitive 85/85 THB-rated power film capacitors. The Temperature, Humidity at Bias (THB) test exposes parts to the harsh conditions of 85° C at 85% relative humidity with rated voltage applied. CDE’s testing has been validated for 1,500 hours while competitors validate their series for 1,000 hours under the same conditions. This demanding test simulates the extraordinarily harsh operating conditions encountered by many commercial and industrial inverter applications that can cause conventional film capacitors to fail early due to moisture penetration.

The ALH Series is optimized for AC harmonic filtering on the input and output of inverter circuits. Capacitance ranges from 0.22 to 50 µF at 160-450 Vac, 50/60Hz with high rms current ratings for handling higher-ordered harmonics. The BLH Series is designed for the high bulk storage and high ripple current requirements of inverter DC link applications. Capacitance values range from 1.0 to 170 µF at 450–1,200 Vdc.

Both series offer self-healing, metalized polypropylene-film in a robust construction that meets the rigors of automotive AEC Q200 testing. The solvent-resistant, box-style plastic case and resin-seal are both UL/cUL 94V-0 recognized for construction designs with tin-plated copper RoHS compliant terminations. Their superior construction makes these capacitors ideally suited for solar, EV and other inverters applications that are subjected to the harshest environmental conditions.

The ALH and BLH Series board-mount film capacitors are available from CDE’s franchised distributors.

Visit our site to learn more.

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