CYNB25-1200PT

Current - On State (It (RMS)) (Max):	25A
Supplier Device Package:	TO-220AB
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
SCR Type:	Standard Recovery
Current - Non Rep. Surge 50, 60Hz (Itsm):	320A, 350A
Current - Off State (Max):	5µA
Current - Hold (Ih) (Max):	50mA
Series:	--
Current - On State (It (AV)) (Max):	16A
Voltage - On State (Vtm) (Max):	1.6V
Current - Gate Trigger (Igt) (Max):	40mA
Voltage - Gate Trigger (Vgt) (Max):	1.3V
Voltage - Off State:	1.2kV
Part Status:	Obsolete
Packaging:	Tube

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Thyristors - SCRs

Thyristors, often called Silicon Controlled Rectifiers (SCRs), are a type of solid-state semiconductor device with three-terminal capability. They have been used in electronic circuits for decades due to their ability to control electric current, voltage, and power. The CYNB25-1200PT is a type of thyristor (SCR) and is typically used in applications such as motor control, power conversion and power conditioning. Let\'s learn more about its application field, and how it works.

Application Field

CYNB25-1200PT thyristors are used in various applications including over voltage protection, motor control, power supply filtering and soft start, motor starting, and dimming control. The device\'s high current capacity makes it well-suited for controlling high-power systems such as electric motors, inverters, and industrial machinery. For example, it can be used to control electric motors using high switching speed and high pulse currents. It can also be used for dimming control, where power control needs to be rapid and accurate in order to adjust the light intensity accurately. The device is also suitable for overcurrent applications in power distribution systems.

Working Principle

CYNB25-1200PT thyristors operate on the principle of triggering controlled rectification. When an SCR is forward-biased, the gate-to-cathode current causes the electrode to become excited, leading to forward-bias of the junction and the flow of conduction current. This current, combined with gate current, switches the thyristor into a low-resistance (ON) state. Mainly, this process occurs by application of gate voltage. The device per se is affected by the temperature of its environment, as its switching characteristics are affected by temperature. Moreover, this device also features current limitation, over-current protection, and over-power protection.

CYNB25-1200PT thyristors are immensely useful devices for controlling high-power systems. The single-terminal devices make for easy installation and can effectively control a variety of applications. The working principle of these devices remains similar across all applications – when a gate voltage is applied, the device becomes forward-biased and conducts current. Furthermore, the wide range of SCR properties makes it easier to choose one depending on the system requirements. In addition, it is important to take note of the device\'s environment temperature, as this can greatly impact their performance.

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