What is a crystal diode? The basic structure, principle, classification, application, identificationethod, detection and selection method of crystal diodes 4

2. Reverse voltage measurement: Using a multimeter or digital voltmeter, connect the positive lead to the negative lead and the negative lead to the positive lead, and then measure the voltage. Under normal circumstances, the voltage of a diode should be very low, close to zero. If a large voltage is measured, it indicates that the diode may have a fault.

3. Current measurement: Use an ammeter to measure the forward and reverse currents of a diode. Under normal circumstances, the forward current should be within the rated current range, while the reverse current should be very small. If the current exceeds the rated value or the reverse current is large, it indicates that the diode may have a fault.

7、 Selection method:

1. Determine application requirements: Determine the operating current, voltage, frequency, and other parameters of the diode based on specific application requirements.

2. Search for data manual: Based on application requirements, find the appropriate diode model and carefully read the relevant data manual to understand its parameters and performance.

3. Choose the appropriate packaging form: Based on the actual application environment and assembly method, choose the appropriate diode packaging form, such as pin type, surface mount, etc.