A1225UA4LRP

Series:	SIDACtor®
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Voltage - Breakover:	130V, 290V
Voltage - Off State:	100V, 230V
Voltage - On State:	4V
Current - Peak Pulse (8/20µs):	150A
Current - Peak Pulse (10/1000µs):	45A
Current - Hold (Ih):	120mA
Number of Elements:	4
Capacitance:	20pF, 25pF, 50pF
Mounting Type:	Surface Mount
Package / Case:	6-SMD, Gull Wing

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TVS - ThyristorsThyristors are semiconductor-based electronic components, and are used in a wide range of applications. The A1225UA4LRP is a common type of thyristor that is designed to offer a wide range of protection features and applications. This device offers protection against both overvoltage and overcurrent, and is suitable for use in low voltage and currents applications.The A1225UA4LRP is a four-layer PNPN thyristor that consists of two parallel connected P-type layers and two N-type layers. The two P-type layers are typically referenced to the emitter and collector, while the two N-type layers are typically referred to as the gate and base. The design of the PNPN thyristor allows for its switch-like behavior, where the overvoltage or overcurrent can be readily opened or closed to control the flow of power.The main application of the A1225UA4LRP is in the protection of electronic components, and circuits in low-voltage and low-current conditions. It is commonly used in circuit protection devices, such as TVS diodes, fuses and surge protectors to protect against overvoltage and overcurrent. The device is also used in electromechanical relays and other types of switches.The A1225UA4LRP has a rated blocking voltage of 400V, and a holdover voltage rating of 200V. This rating allows the device to effectively protect against short periods of overvoltage, as well as provide low-voltage protection in low-emission environments such as those found in portable electronics and automobiles.The working principle of the A1225UA4LRP is based on its four-layer structure. First, the forward biased Bypass Diode allows current to flow, thus allowing the thyristor to be switched on. Second, the PNPN structure of the device when forward biased, creates a voltage drop across the device which turns the device on. Third, the current control of the gate can further control the current flow through the device. Finally, the device can be switched off by reversing the polarity of the gate to ground.The A1225UA4LRP is a versatile and cost-effective thyristor that is applicable for many different applications. It is commonly used for TVS diodes, surge protectors, relays and other low voltage and current applications. With its robust construction and excellent protective features, it is an ideal solution for protecting any device or circuit at low voltages and currents.

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