P4KE47A-E3/73 Circuit Protection

TVS (Transzorb Varoistors) - Diodes are widely known for its transzorb characteristics, which enable it to suppress high voltage transients, protecting electronic components from high power surges. P4KE47A-E3/73 is a highly efficient, cost-effective over-voltage protection diode manufactured by Traco Power, which is renowned for providing high quality transient protection diodes. P4KE47A-E3/73 contains a clamping device including a galvanic isolating element and an integrated transistor. It is designed to protect the system from electro-static discharge (ESD), electrical fast transients (EFT), and over-voltage transients.

This diode has two distinct characteristics: its Fast Acting Characteristic (FAC) and its High Surge Capability (HSC). The FAC ensures that a fast response time is achieved for suppressing over-voltages that occur in the system. The HSC feature enables it to handle very high surge currents during over-voltages due to external factors such as lightning strikes or power transmission network faults.

The P4KE47A-E3/73 diode is suitable for a wide range of applications, such as automotive, industrial, appliance, telecom, broadcast, and other industrial applications. It can be used in power switching equipment, motor control equipment, uninterruptible power supply (UPS) systems, and instrumentation devices. It is also commonly used in power supplies, data communication systems, avionics, and television systems.

The working principle of the P4KE47A-E3/73 is based on an avalanche diode with a galvanic isolating element and an integrated transistor. The diode is designed with a specified breakdown voltage that triggers the internal protection circuitry. When the device\'s breakdown voltage is exceeded, the transistor opens to provide a controlled clamping voltage to suppress the over-voltage transient. The transistor and avalanche diode both act in series to provide effective over-voltage protection to the system.

The P4KE47A-E3/73 also offers resistor-style inrush current protection, which is required for many applications. This type of protection limits inrush current and eliminates "false trips". In addition, the device is designed to provide quick and reliable transfer between normal and over-voltage modes.

The P4KE47A-E3/73 provides excellent over-voltage protection for a wide range of applications. It offers fast response times to help protect system components from transient over-voltages, and is also designed to permit the safe operation of high-speed switching systems such as motor control equipment, power supplies, and data communication systems. Its versatility makes it an ideal choice for a variety of applications.