Data Sheet Of Transistor !!top!! -

). As shown in the STMicroelectronics BD239C datasheet , you often need to "derate" these values if your environment is hotter than 25∘C25 raised to the composed with power C DC Gain ( hFEh sub cap F cap E end-sub

The first page usually provides a high-level overview. It identifies the transistor type (NPN, PNP, MOSFET, JFET) and its primary intended application, such as high-speed switching or low-noise amplification. This section often includes a "Quick Reference Guide" highlighting the most critical parameters like maximum voltage and current, allowing designers to quickly determine if the part fits their basic requirements. Absolute Maximum Ratings data sheet of transistor

If your calculated junction temperature exceeds the maximum rating, you need a bigger heatsink or a different transistor. JFET) and its primary intended application