STTH3R04RL

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A STTH3R04RL is a highly efficient silicon epitaxial rectifier diode, intended for a wide range of applications including switch mode power supplies, computers and telecommunications. It is a single rectifier with a breakdown voltage of 600V, a forward voltage drop of 3V, a forward current of 40A, and an inductive storage temperature of -40°C to +150°C. It has an ultra-fast recovery time and is of low noise and high ripple rejection. This makes it well-suited for rectification in the most demanding of switching power supplies.

The STTH3R04RL has a wide range of applications within the power conversion field. It is used in products such as AC/DC converters, audio amplifiers, inrush current limiters, industrial and medical applications, low impedance drivers, servo motors and switch-mode power supplies. The device can also be used as a switch in forward current applications.

In terms of construction, the STTH3R04RL is a dual-channel SiDi rectifier, which consists of two high conductivity channels of N-type silicon mounted side-by-side on the same substrate. It is designed with very low on-state resistance, which gives it excellent power density and current handling capability. The two channels are connected in series, so no bulky junction block is required, and the device is hermetically sealed in an epoxy package which is resistant to vibration, shock and any accidental electrical contact.

The device operates in two basic modes, the forward direction, where current is passed through it in the same direction as the applied voltage, and the reverse direction, where current is passed in the opposite direction. The forward direction is more efficient and requires fewer losses due to lower resistance properties. The reverse direction is used for protection against overvoltage and for transient current limitation. In the forward direction, the device acts as a rectifier, converting alternating current to direct current.

In the reverse direction, the STTH3R04RL is a protective device, preventing short circuit damage and voltage spikes. It limits the current in the reverse direction, thus preventing the power semiconductor from overcurrent or reverse power dissipation. The device’s reverse breakdown voltage is about 600 V. This makes it a good choice for servo motors and switch-mode power supplies due to its large reverse voltage margin.

The device also provides protection against inductive pressure transients. When the current in the rectifier diode increases, the voltage across it rises. But, inductor transients create a sharp rise in the voltage, which may cause damage to the semiconductors. The device has a fast recovery time and low capacitance, making it ideal for this application.

Overall, the STTH3R04RL is a highly efficient and reliable rectifier diode for use in a wide range of applications within the power conversion field. It is easy to install due to its hermetically sealed epoxy package, and has excellent voltage and current handling capabilities, making it well-suited for various applications. The device has low losses when operated in forward direction and offers protection against inductive rise transients and reverse overvoltages. It’s flexible design and wide temperature range ultimately make it a great choice for any application requiring efficient and reliable rectification.

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