Allicdata Part #: | C354B-ND |
Manufacturer Part#: |
C354B |
Price: | $ 53.47 |
Product Category: | Discrete Semiconductor Products |
Manufacturer: | Powerex Inc. |
Short Description: | THYRISTOR SCR 170A 200V TO-200AB |
More Detail: | SCR Standard Recovery |
DataSheet: | C354B Datasheet/PDF |
Quantity: | 1000 |
30 +: | $ 48.60370 |
Series: | -- |
Packaging: | -- |
Part Status: | Active |
Current - Non Rep. Surge 50, 60Hz (Itsm): | -- |
SCR Type: | Standard Recovery |
Operating Temperature: | -- |
Mounting Type: | -- |
Package / Case: | -- |
Supplier Device Package: | -- |
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Thyristors, otherwise known as silicon-controlled rectifiers (SCRs), are a type of solid-state semiconductor device made up of four close-connected NPNP layers. They are important semiconductor devices in the field of high-current switching and regulating, and are widely used in power electronic devices. One example of a commonly used thyristor is the C354B, a general-purpose SCR designed for medium-power switching applications.
The C354B is a four-layered NPNP SCR in a TO-204AA plastic package. It has gate-controlled triggering capabilities, and is able to handle currents up to 30A. Its nominal reverse blocking voltage is 400V, with a maximum of 600V. Its thyristoring current is 75mA, with a forward voltage of 1.5V. Its triggering power is 0.95W.
The C354B has a wide range of applications. These range from motor speed control, and sensing applications, to lighting dimmers and watt hour meters, as well as over-current protection and heating control. In these applications, the C354B acts as a switch, controlling and managing the electric current flows.
The C354B’s working principle is basic. It consists of a main NPNP switching unit, a voltage divider network at the gate for switching control, and a gate capacitor for voltage boosting. When a small current is passed through the gate, the charge on the gate capacitor is increased to the same voltage as that of the anode, thus causing the thyristor to enter its conducting or forward state. The charges stored on the gate capacitor will then keep the thyristor in its conducting state until the current on the gate capacitor is drained off. When this happens, the thyristor is forced into its reverse blocking state.
Unlike mechanical switches, thyristors are unable to be switched off while they are conducting current, and the only way to turn them off is by cutting the current supply. To prevent them from turning on unintentionally, power control diodes must be added to the circuit for prevention and protection.
In conclusion, the C354B is a versatile, general-purpose SCR, capable of handling medium-power switching applications. Its working principle is straightforward, and its applications range from motor speed control to over-current protection. Its ability to switch on and off will ensure a smooth and consistent flow of electrical current.
The specific data is subject to PDF, and the above content is for reference
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