MMBT5551 SOT-23 UTC Brand Product Introduction

MMBT5551 SOT-23 Youshun (UTC) is a high-performance NPN bipolar transistor. The following is a detailed introduction to the product:

1、 Product Overview
MMBT5551 is an NPN type high-voltage fast switching transistor produced by UTC Semiconductor Company. It adopts SOT-23 packaging form, which has the characteristics of small size, light weight, easy soldering and installation. This transistor is suitable for various electronic circuits that require high voltage, high current gain, and high switching speed, such as switching power supplies, power amplifiers, motor drives, etc.

2、 Main parameters
Packaging form: SOT-23
Transistor type: NPN
Collector emitter maximum withstand voltage (VCEO): 160V
Collector base maximum withstand voltage (VCBO): 180V
Maximum emitter base withstand voltage (VEBO): 6V
Maximum allowable collector current (ICM): 0.6A (able to withstand larger currents in a short period of time)
Maximum dissipated power of collector (PCM): Depending on the specific packaging and heat dissipation conditions, the typical value is 0.225W or 350mW (please refer to the specific data manual)
DC current gain (hFE): typically ranging from 80 to 300, the specific value depends on the testing conditions and component grading
Characteristic frequency (fT): up to 300MHz, suitable for high-frequency circuit applications
3、 Product Features
High voltage withstand capability: MMBT5551 has high collector emitter and collector base withstand voltage capabilities, making it suitable for high-voltage circuit applications.
High current gain: This transistor has a high DC current gain and can provide a large output current, making it suitable for applications such as power amplification.
High switching speed: MMBT5551 has fast switching characteristics, suitable for electronic circuits that require high-speed switching.
Small Package: The SOT-23 package form makes the transistor compact in size, easy to solder and install on circuit boards, and suitable for the design of high-density electronic products.
4、 Application scenarios
Switching power supply: MMBT5551 can be used as a switching element to achieve efficient current control in switching power supply circuits.
Power amplifier: In power amplification circuits, MMBT5551 can provide stable current and voltage outputs, ensuring high-quality signal amplification.
Motor Drive: Suitable for motor drive circuits, capable of controlling the start, stop, and speed adjustment of motors.
Other high-voltage and high-frequency applications: such as high-frequency oscillators, filters, inverters, and other circuits.
5、 Precautions
When using MMBT5551, please ensure that it does not exceed its maximum rated value to avoid component damage or performance degradation.
Appropriate heat dissipation measures are crucial to ensure the reliability of transistors in high-power applications.
In circuit design, please ensure that the electrical parameters of the selected transistor match the circuit requirements to avoid performance degradation or damage.
In summary, MMBT5551 SOT-23 Youshun (UTC) is a high-performance, easy-to-use NPN high-voltage fast switching transistor suitable for various electronic circuits that require high voltage, high current gain, and high switching speed. When selecting and using, please refer to the specific data manual and application guide to ensure the performance and reliability of the circuit.