Celsia Achieves 1,000 w/cm2 with New Hybrid Two-Phase Design

Celsia Inc. has successfully tested its passive two-phase technology to 1,000 w/cm2. Available in different form factors down to 2.5mm thick, these copper based devices are designed for applications using high power density laser diodes, power electronics, concentrating photovoltaics, or ultra-HB LEDs.

“Our goal was to push the performance limits of passive two-phase systems in order to provide design alternatives to thermal engineers needing to cool small heat sources with high power densities”, explains George Meyer, Celsia’s CEO. “Rather than having to migrate to a pumped liquid system, efficient heat spreading using our new designs can extend the limits of air cooled systems.”

Celsia developed several configurations of a copper based two-phase device with a hybrid wick structure in order to concentrate liquid flow directly to the heat source and achieve the most favorable results. Testing was conducted using a liquid cold plate attached to the devices, but the spreader performance is applicable to air cooled designs as well.

Two platforms were successfully tested to 1,000 and 850 w/cm2 power levels using a 1x8mm heater which was soldered to the devices. The testing showed stable operation up to the limits of the heat sources. Dry out power levels for these designs has not been reached yet and the test set is being redesigned to accommodate even higher power densities.

Figure 1: 8x8x100mm Two-Phase Device with Test Results




Figure 2: 2.5x20x50mm Two-Phase Device with Test Results





For more information or to discuss your application please contact Celsia from its website.

About Celsia Inc.

Celsia specializes in two phase heat sink design and manufacturing for Fortune 500 and mid-market enterprise companies. Custom solutions have shipped in over two million products worldwide from our US and Asia based design and product facilities. Our goal is to provide fast, affordable, and reliable thermal solutions using vapor chamber, heat pipe and hybrid designs.