Metric · Packaging & Assembly
Junction temperature
The temperature of the active silicon itself, as opposed to the case, board or ambient. It is the quantity that reliability models and datasheet maximum ratings are written against, and it is normally inferred from an on-die thermal sensor.
- Also known as
- Tj, Tjunction
- Type
- Metric
- Domain
- Packaging & Assembly, Thermal management
Notes
Most commercial silicon is rated to a maximum Tj of around 100 to 125 degrees Celsius, with automotive grades pushing higher.
Related terms
Part of the Packaging & Assembly glossary, with every term in the topic and the lifecycles, tools and standards that use them.
Where it appears on the Hub
Used on 3 pages of the Hub. In each group, the pages that mention it most come first.
Suggest an improvement
Suggest an improvement to this entry
A clearer definition, an example, a correction or a source an editor can check. Editors review every suggestion before the entry changes.
Last reviewed: not yet reviewed in depth. Entry last updated . The full glossary