NO. | PARAMETER | DESCRIPTION | °C/W(1) (2) | AIR FLOW (m/s)(3) |
---|
T1 | RΘJC | Junction-to-case | 11.4 | N/A |
T2 | RΘJB | Junction-to-board | 8.0 | N/A |
T3 | RΘJA | Junction-to-free air | 19.1 | 0 |
T4 | Junction-to-moving air | 14.7 | 1 |
T5 | 13.4 | 2 |
T6 | 12.5 | 3 |
T7 | ΨJT | Junction-to-free air | 5.4 | 0 |
T8 | Junction-to-package top | 5.8 | 1 |
T9 | 6.1 | 2 |
T10 | 6.5 | 3 |
T11 | ΨJB | Junction-to-free air | 6.8 | 0 |
T12 | Junction-to-board | 6.6 | 1 |
T13 | 6.6 | 2 |
T14 | 6.5 | 3 |
(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 the 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
Power dissipation of 2W and an ambient temperature of 70°C is assumed.
(3) m/s = meters per second.