DC-link capacitors endure heat and moisture

Knowles’ Cornell Dubilier Type BLS DC-link capacitors operate in harsh environments with temperatures up to 125°C. The company reports the capacitors exceed industry standards in temperature-humidity bias (THB) testing, achieving a 100% longer lifespan than comparable devices.

The series undergoes 2000 hours of THB testing at 85°C and 85% relative humidity at rated voltage. Type BLS capacitors also meet automotive-grade electrical and mechanical requirements per AEC-Q200, ensuring reliable operation under high temperature and moisture conditions.

Type BLS DC-link capacitors operate across a wide temperature range, from –55°C to 125°C, maintaining stable capacitance and low ESR even under the thermal stress of high-speed SiC switching. They offer capacitance values from 1 µF to 220 µF and voltage ratings between 450 VDC and 1100 VDC.

Encased in UL94-V0 rated plastic with thermosetting resin potting, the capacitors resist solvents and mechanical stress for long-term durability. Versatile mounting options allow horizontal or vertical board placement with 2- or 4-pin configurations.

Check availability, request samples, or get a quote on the product page linked below.

Type BLS product page

Cornell Dubilier  

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