Case study: Thermal effectiveness of thermal jumpers

Ensuring optimal temperature management for your electronic devices is a critical concern today. In our pursuit of enhanced heat transfer efficiency, we have created ceramic thermal jumpers using aluminum nitride. Explore this page for a detailed analysis of the effectiveness our thermal jumpers bring to the table.

                               22Ω resistor   |       Zone 1        |        Zone 2         |        Zone 3

 

Performed tests

These tests are performed on a 1.6mm FR4-PCB with a 1oz copper signal layer using a 22Ω resistor. There are three different zones which illustrate different ground planes having an area of 19.8X60mm surface, as depicted in the picture on the left.

The goal of these tests is to show the difference in temperature levels obtained when using different thermal paths. Four tests are examined for five different footprints:

  • The first test is without a thermal jumper.
  • A second test contains one thermal jumper that connects a resistor to zone 1.
  • The third test contains two thermal jumpers that connect the resistor to zone 1 and 2.
  • Final test contains three thermal jumpers that connect the resistor to zone 1, 2 and 3.

 

 

Results and conclusions

The equilibrium temperature in each zone at 4 instances was measured, with zero, one, two or three thermal jumpers that connect the different zones from left to right. The results are depicted on the right, all measurements are expressed in degrees Celcius.

  • The results show that the thermal jumpers reduce the overall heath on the PCB very well, reducing the temperature at the resistor by up to 35°C(!) (CDXH-R8/FA-SOIC8-01).

  • We observed that the CEXH-R2/XA-5930-01 thermal jumper has overperformed Its calculated outcome, this is most likely because the large thermal jumper is acting like a small heatsink.

  • Additionally, our observations indicate that employing multiple ‘jumps’ with substantial copper planes in between yields diminished effectiveness.

In general, the tests show that the CERmaJumpTM thermal jumpers are behaving as expected, reducing the resistor significantly by thermally connecting larger copper surface areas making it an excellent low-cost solution for components that cannot be connected directly to ground planes or heat sinks.

 

 

How to order

You can easily order standard footprints online at our website by pressing the button below. 

Customized footprints are also available on the website, but you can always contacts us to get application specific quotations and technical advice on your designs and our specialists will be in touch with you asap.

ORDER thermal jumpers Contact us

CEXH-R2/XA-0603-01

0603 [1608 metric]

CEXH-R2/XA-0612-01

0612 [1632 metric]

CEXH-R2/XA-1206-01

1206 [3216 metric]

CDXH-R8/FA-SOIC8-01

SOIC8-01 [4347 metric]

CEXH-R2/XA-5930-01

5930 [15076 metric]