|
°C/W(1)(2) |
AIR FLOW (lfm)(3) |
| RΘJC |
Junction-to-case |
10.3 |
0 |
| RΘJB |
Junction-to-board |
21.2 |
0 |
RΘJA
(High k PCB) |
Junction-to-free air |
40.8 |
0 |
| 32.4 |
150 |
| 31.0 |
250 |
| 29.1 |
500 |
| PsiJT |
Junction-to-package top |
0.4 |
0 |
| 0.5 |
150 |
| 0.6 |
250 |
| 0.8 |
500 |
| PsiJB |
Junction-to-board |
21.0 |
0 |
| 20.4 |
150 |
| 20.2 |
250 |
| 19.9 |
500 |
(1) °C/W = degrees Celsius per watt
(2) These values are based on a JEDEC-defined 2S2P system (with the exception of the Theta JC [RΘ
JC] value, which is based on a JEDEC-defined 1S0P system) and will change based on environment as well as application. For more information, see these EIA/JEDEC standards:
- JESD51-2, Integrated Circuits Thermal Test Method Environmental Conditions - Natural Convection (Still Air)
- JESD51-3, Low Effective Thermal Conductivity Test Board for Leaded Surface Mount Packages
- JESD51-7, High Effective Thermal Conductivity Test Board for Leaded Surface Mount Packages
- JESD51-9, Test Boards for Area Array Surface Mount Package Thermal Measurements
(3) lfm = linear feet per minute