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2020
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02
How to choose a diode
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Information Abstract: Below, switching diode manufacturers to teach you how to choose a diode, let's see. 1. Suitable models should be selected according to different use occasions. Common diode is suitable for high frequency detection, frequency detection and limiting and small current...
Next, switch diode manufacturers to teach you how to choose a diode, let's see.
1. Suitable models should be selected according to different use occasions. Common diode is suitable for high frequency detection, frequency detection and limiting and small current rectification; Rectifier diode is suitable for low frequency rectifier of different power; Switching diodes are used in electronic computers, pulse control, switching circuits, etc.
2. When using the diode, the peak reverse voltage and forward current to be borne by the diode shall not exceed the rated value. For circuits with inductive elements, the reverse peak voltage rating should be chosen to be more than 2 times greater than the line operating voltage to prevent breakdown.
3. When replacing the diode, the highest reverse voltage can not be lower than the original diode, and the largest rectifier current can not be lower than the original diode rectifier value.
4. When replacing the high-frequency diodes, the highest operating frequency shall not be lower than the original diode 's.
5. Power rectifier diode shall be equipped with heat sink or cooling device to prevent overheating and burning.
6. In actual circuits, many diodes can be replaced according to their role in the circuit.
7. When welding low-power diodes, the welding should be rapid, generally not more than 5s. The power of the soldering iron is usually less than 35W. The bending of the pin usually needs to be more than 5mm from the housing.
8. Protection measures shall be taken when the diode is connected in series or parallel in the rectifier circuit.
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How to choose a diode
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