| Mistake | Reality | |---------|---------| | Using ( V_CEO ) as operating voltage | It’s a maximum , stay well below (e.g., 80% max). | | Ignoring ( h_FE ) variation | Gain can drop 50% at high current. | | Using ( V_GS(th) ) as “fully on” (MOSFET) | That’s just starting to turn on. For low ( R_DS(on) ), use ( V_GS ) = 10V (or logic level). | | Forgetting heat sink needs | ( P_D ) assumes perfect heatsinking; without one, derate by ~50–80%. |
Non-negotiable physical limitations. Operating beyond these thresholds risks immediate, permanent hardware destruction. transistor datasheet
This section details the performance of the transistor under specific test conditions. It is usually divided into "On Characteristics," "Off Characteristics," and "Small Signal Characteristics." | Mistake | Reality | |---------|---------| | Using
This section defines how the device handles heat dissipation and the physical packaging (e.g., TO-92, TO-220, SOT-23). For low ( R_DS(on) ), use ( V_GS ) = 10V (or logic level)
