Higher power transistors, however, will have a partially metal shell to help dissipate the heat produced, as this will eventually harm the components. It has the ability to switch on and off circuits and magnify signals.Ī resin case surrounds tiny, low-power transistors to help safeguard the interior components. Little electronic components known as transistors serve two fundamental purposes. In this post, we'll mostly concentrate on the bipolar variation. The bipolar type and the field effect are the two primary types. It specifies the rise in temperature for given power dissipation, and the junction temperature must never rise above 150 ˚ C.There are numerous sizes and forms for transistors. The thermal resistance is specified in degrees Celsius per watt. While the package is capable of dissipating 625mW, the thermal resistance of the TO-92 case limits the practical power dissipation.

The power dissipation must also be taken into account. However, at high currents, the gain drops off rapidly and a base current of up to 50mA is needed to achieve high collector currents. The S9013 also has a high collector current rating of 500mA. This limited bandwidth is due to internal parasitic capacitances. The transition frequency of a transistor is the frequency at which current gain drops to one, beyond which the transistor can no longer amplify signals. The S9013 is a high current fast NPN transistor that can be used for general-purpose switching and amplification.

Note: Complete technical details can be found in the S9013 datasheet linked at the end of this page.

TO-92 package with 650mW power dissipation.

It also has a relatively large collector current capacity of 500mA.Ĭurrent into this terminal controls current between the collector and emitter It features a high transition frequency of 140MHz, making it suitable for high-frequency applications. The S9013 is a medium-power NPN transistor used for general purpose switching and amplification.

Transistor pinout download