Technical Design-in Guide SLE G6 | 12-2018 | 2.1 | en
Thermal Aspects
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Recommendation (for application notes)
Mounting quality of the LED-module can be tested by measuring the temperature on opposite points as marked below.
A temperature difference of more than 10°C between Point 1 and Point 2 signifies a bend in the module.
In which ways can Tridonic SLE modules be mounted to achieve good performance?
Conclusion
With the increasing power density of LED-modules the thermal management gets more important.
Intelligent heat management can increase the performance and lifetime of an LED-spot-module significantly.
6.1.4. Rth
The lifetime of LED modules is highly dependent on the operating temperature. Exceeding the permissible temperature limits results
in a significantly reduced lifetime or the destruction of the LED module SLE G6. Therefore, it is necessary to mount the LED module
SLE G6 on an appropriate heat sink, which do not exceed the Rth
value. The Rth values can be found in the data sheet of the
max
respective products. The data sheets can be found on the Tridonic website at the following link:
http://www.tridonic.com/com/en/data-sheets.asp
6.1.5. tp point, ambient temperature and lifetime
The temperature at the tp point is crucial for the luminous flux and the lifetime of an LED product.
The thermal limits can be checked at the
tr point.
tp/tc point and the
Usage of thin and flexible thermal interface materials. Usage of thermal paste (1W/mK @ 50µm thickness) is strongly
recommended.
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Don´t exceed the recommended torque of 0,5nm
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Use heat sinks with smooth surfaces
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Check temperature homogeneity as described above.
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Take maximum silicone temperature as application advice into consideration.
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tp is the temperature at which the rated values are obtained.
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tc is the threshold temperature which ensures the security of the module and must not be exceeded under normal conditions.
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