S8550 pin diagram analysis and S8550 circuit diagram summary

As an audio amplifier, s8550 is used in electronic products such as radio recorders and electric toys. Transistor 8550 is a commonly used ordinary transistor. It is a low voltage, high current, small signal PNP type silicon transistor. The maximum collector current is 0.5 A.

The parameters of S8550 are as follows:

1、VCBO -30V

2、VCEO -20V

3、VEBO -5V

4、Pc 1 W

5、Ic -700mA

S8550 Features:

Power dissipation PCM: 0.625 W (at ambient temperature 25°C)

Collector current ICM: 0.5 A

Collector-base voltage V(BR)CBO: 40 V

S8550 limit value (TA=25℃)

S8550 electronic characteristics (tested at an ambient temperature of 25°C):

S8550 DC current amplification factor is classified according to the suffix number of the transistor:

S8550 pin diagram

Pin diagram and function of 8550 transistor in SMT package

S8550 circuit diagram summary

1. S9013 and S8550 control 12V voltage circuit

2. MCU controls relay circuit diagram through S8550

3. s8550 tests the output voltage circuit of 12V battery

The use of battery power will cause the output voltage to decrease. If the battery is at low voltage for a long time, it will be damaged. This suite can be used to test the output voltage of other 12V batteries. When the battery voltage is low, the red indicator light will light up and the buzzer will sound, realizing the sound and light alarm to grasp the battery discharge status.