2SD1388TP-4 application field and working principle

The 2SD1388TP-4 is a bipolar transistor manufactured by STMicroelectronics. It is a silicon NPN transistor, classified as a Single Transistor - Bipolar (BJT) that is suitable for use as an amplifier or switch in a range of applications.

Rating and characteristics

The key parameters of the 2SD1388TP-4 are as follows:

• DC Current Gain (h_fe): 60 to 400
• Collector-Base Breakdown Voltage (V_ceo): 40V
• Transition Frequency (f_T): 40MHz
• Power Dissipation (P_D): 50W
• Collector-Emitter Voltage (V_ce): 20V
• Emitter-Base Voltage (V_eb): 3V

Application field

The 2SD1388TP-4 has a wide range of applications including:

• Audio amplifiers
• Power amplifiers
• RF amplifiers
• High speed switching
• Switching circuits

It is frequently used in consumer electronics, automotive and industrial control applications.

Working principles

The 2SD1388TP-4 is a bipolar junction transistor (BJT) and works on the principle of current gain. It is formed from two opposite-facing P-N semiconductor junctions pressed firmly together. The two junctions form the base and collector regions of the transistor.

An electric current passing from the collector to the emitter allows electric current to flow from the base to the collector. The transistor amplifies any voltage or current passing through it, such that the output is proportional to the input applied.

Therefore the 2SD1388TP-4 can be used as an amplifier or switch, depending on the circuit configuration.