Heatsink | search
Click here to view Heatsink news from 60+ newspapers.
Bookmark or Share- How to mount heat sink to mosfet | All About CircuitsThose are the whole kit except you should be able to get black anodized for the same price which is supposed to radiate the heat better. Also apparently now the silicone sheet is preferred over the grease. Be careful with the mounting screw pressure to ensure it sits flat and in full contact on the heatsink.
- TO-92 Heat Sinks - All About CircuitsDoes anyone know of any cheap and readily available ones or a good DIY substitute? I guess you could give it an aluminum foil crown. There are better methods but this is inside a closed up tight linear RF amplifier with a finned aluminum heatsink for a case without any internal airflow cooling. Planing on adding some exterior muffin fans.
- MOSFET power dissipation. Can a heatsink take +300W?With a single transistor, the heat injected into the heatsink is injected in one place and spreads out from there, making the place the single transistor is mounted the hottest spot on the heatsink. This can be important when the thermal drop between the case of the transistor and the heatsink becomes significant.
- Heat Sink Thermal Capacitance - All About Circuits"A device is mounted on a heatsink. It is started from cold and run for five minutes before being switched off. The device produces 30W of losses and the thermal resistance between the device and the heatsink is 1.7C/W. The thermal capacitance of the heatsink is 100J/C. The ambient temperature is 40C.
- Heatsinking Power MOSFETs, TO-220 vs D2PAK - All About CircuitsD2PAK's use the copper pad under the tab as the heatsink. You need to determine the thickness and area of this pad using the thermal resistance specification in the datasheet. This can consume a lot of board area and require a more expensive PCB process to get thicker copper. For TO-220's sometimes I use a PCB mount heatsink.
More
