5SDF1045H0002 Semiconductor silicon Controlled module

5SDF1045H0002 Thyristor, is short for thyristor rectifier, is a high-power semiconductor device with three

PN junction structure of four layers, also known as the thyristor. It has the characteristics of small size,

relatively simple structure and strong function. It is one of the most commonly used semiconductor devices.

The device 5SDF1045H0002 is widely used in a variety of electronic equipment and electronic products,

mostly used for controllable rectifier, inverter, frequency conversion, voltage regulation, contactless switch.

Dimming lights, speed fans, air conditioners, TV sets, refrigerators, washing machines, cameras, combined

sound, audio and optical circuits, timing controllers, toy devices, radio remote control, cameras and industrial control are a large number of thyristor devices.
5SDF1045H0002 thyristor in the circuit can realize AC contactless control, with small current control of large

current, and unlike the relay control spark generation, and fast action, long life, good reliability. In speed regulation,

dimming, voltage regulation, temperature regulation and other various control circuits have its figure.

5SDF1045H0002

The four layers of the 5SDF1045H0002 transistor work like two transistors, they are connected together

(as shown below), the output of one forms the input of the other, and the gate acts as a kind of “starter motor” to activate them.

The 5SDF1045H0002 Single thyristor (SCR) is a combination of a pnp transistor (Q 1) and an npn transistor (Q 2).

Here, Q1’s emitter is the anode terminal of the SCR, and Q2’s emitter is its cathode. In addition, the base of Q1 is

connected to Q2’s collector, the collector of Q1 is connected to Q’s base, and the gate terminal of the thyristor is also connected to Q2’s base.