DFLS260-7

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DFLS260-7 is a single rectifier diode which is widely used in power applications. It is derived from the well-known 1N4007 rectifier, with an added guard-ring as an integral part of the package. The guard-ring is an absence of a semiconductor element that is responsible for reducing the high reverse breakdown voltage of the device. It also serves as a rugged protective layer against environmental factors such as dust and other particles. Its peak forward voltage drop (VF) is relatively low for its size. This makes it suitable for power applications where the power dissipation is limited.

DFLS260-7 has a forward current rating of up to 7 A and a reverse current of up to -1 A. The device possesses an average forward voltage drop (VF) of 1.1 V as well as a reverse breakdown voltage of 400 V. Its peak forward surge current and reverse breakdown voltage both remain relatively low when compared to similar devices. It also has a leakage current at reverse bias of 1 μA, making it suitable for applications where low power dissipation and high accuracy are required. Additionally, it has a thermal resistance junction-to-case of 200°C/W which helps to limit the heat generated by the device.

The working principle of the DFLS260-7 is quite simple. Firstly, the collector-base junction is forward biased. This allows the current to flow into the collector and out of the base. The guard-ring allows the current to pass without being affected by the reverse breakdown voltage. As the voltage of the collector-base junction increases, the collector-base junction begins to turn off, reducing the forward current. When the voltage reaches the reverse breakdown voltage, the device will stop conducting current until the forward voltage is applied again.

The DFLS260-7 is widely used in power electronic applications such as AC and DC power supplies, battery chargers, and solar inverters. It can also be used for general-purpose rectification and low-voltage switching. Furthermore, due to its low thermal resistance, it is suitable in applications that require high current density and/or long-term reliability. The device is also suitable for automotive electronic systems and medical electronic systems as it meets the strict quality and safety requirements.

In conclusion, the DFLS260-7 is an advanced single rectifier diode. It has a relatively low VF, low thermal resistance, and excellent surge current capabilities. Furthermore, the guard-ring reduces the reverse breakdown voltage and provides an added layer of protection. As a result, the device is widely used in a variety of power electronics applications and is ideal for automotive, medical and power supply applications.

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