SA48CAHE3/73 Circuit Protection

The SA48CAHE3/73, commonly referred to as a Transient Voltage Suppression (TVS) Diode, is a specialized diode designed to protect electronic systems from voltage spikes and overvoltage conditions. This particular diode is designed for a wide variety of applications where high-power and high-frequency transients are expected, making it an ideal choice for automotive, industrial, and consumer electronics.

Application Field

SA48CAHE3/73 is one of the most popular and versatile TVS Diode products on the market. It is used in a wide range of high-temperature and high-reliability applications, including automotive electronics, consumer electronics, computer power systems, and aerospace/defense. The SA48CAHE3/73 is particularly suited for use in constant-voltage applications, such as DC-DC converters, voltages sensors, and fuel pumps, due to its high-power rating and low voltage drop. The SA48CAHE3/73 also has the ability to absorb up to 1200W in its 100V operating voltage range, making it perfect for applications where extremely large transients are expected.

Working Principle

The SA48CAHE3/73 works by providing a path of least resistance for overvoltage conditions. When the input voltage exceeds the breakdown voltage of the diode, a portion of the current is redirected through the diode, thereby dissipating the excess voltage. This redirects the current away from sensitive electronic components, protecting them from damage. Additionally, the SA48CAHE3/73 features a dual-channel MOSFET technology that allows it to regulate very high peak surge currents and peak power. In applications where extremely high peak power is expected, this dual-channel MOSFET allows the diode to absorb and dissipate energy more efficiently and reliably than single-channel transistors.

The SA48CAHE3/73 is designed for high-reliability, high-temperature applications. It features an integrated thermal shutdown circuit that prevents overheating in high-power applications. This thermal shutdown ensures that the diode does not overheat and become damaged due to continuous overvoltage operations. The SA48CAHE3/73 also features a dynamic reverse polarity protection, which prevents the diode from being damaged if connected in reverse. This feature ensures reliable performance and extends the diode’s life expectancy.

In summary, the SA48CAHE3/73 is a versatile, high-reliability TVS Diode designed for a wide variety of applications. It provides reliable protection against overvoltage conditions, high-power transients, and reverse polarity connections. Its dual-channel MOSFET technology and integrated thermal shutdown circuit make it an ideal choice for automotive, industrial, and consumer electronics applications.