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2025
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04
Common types of rectifier diodes
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Common rectifier diodes: such as the 1N4000 series, suitable for general low-frequency rectifier circuits, the operating frequency is usually below tens of kilohertz. 1N4001 - 1N4007 correspond to different reverse voltage values, ranging from 50V to 1000V, and can be selected according to the specific voltage requirements of the circuit.
Common Types
- General Rectifier Diode ：Such as the 1N4000 series, suitable for general low-frequency rectifier circuits, with operating frequencies typically below tens of kilohertz. 1N4001 - 1N4007 correspond to different reverse voltage ratings, ranging from 50V to 1000V, selectable based on the specific circuit's voltage requirements.
- Fast Recovery Rectifier Diode ：Features a short reverse recovery time, generally within a few hundred nanoseconds, suitable for higher-frequency rectifier circuits, such as the rectifier part in switching power supplies. Common models include FR107, HER307, etc.
- Schottky Rectifier Diode ：Characterized by a low forward voltage drop and extremely short reverse recovery time, typically tens of nanoseconds or even shorter, thus achieving high efficiency and switching speed. However, its reverse voltage rating is relatively low, generally between tens and hundreds of volts. Commonly used in low-voltage, high-frequency rectifier circuits, such as computer power supplies and mobile phone chargers. Typical models include MBR1045, BAT54C, etc.
Application Scenarios
- Power Circuits ：This is the primary application area for rectifier diodes. In power adapters of various electronic devices, it converts alternating current (AC) from mains electricity into direct current (DC), providing a stable DC power supply for subsequent circuits. For example, mobile phone chargers use rectifier diodes to rectify 220V AC to a DC suitable for charging the phone.
- Rectifier Bridge Circuit ：A rectifier bridge, consisting of four rectifier diodes, can fully rectify AC to DC. In devices requiring a larger DC power supply, such as television sets and computer power supplies, rectifier bridge circuits are often used to increase rectification efficiency and output power.
- Signal Processing Circuits ：In some signal processing circuits, rectifier diodes can rectify AC signals into DC signals for subsequent processing. For example, in a peak detection circuit for audio signals, a rectifier diode is used to extract the peak value of the audio signal, converting it into DC voltage to control parameters such as the gain of an audio amplifier.
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