Color ring Zener diodes are very rare in China. Most of them come from overseas, especially Japanese products. Generally, the color ring zener diodes are marked with model specifications and main parameters. The detailed information can be found in the component guide. The color ring zener diode is small in size, small in output power, and the zener tube value is mostly within 10V, which is very easy to penetrate and destroy. The appearance of the color ring Zener diode is very similar to the color ring resistor, so it is very easy to make mistakes. The color ring on the color ring zener diode means two meanings: one means data, and the other means decimal digits. (Generally, the color ring zener diodes all take one decimal place and are indicated by dark brown. Also It can be understood as a multiple that is: ×10 (the -1 power), the actual color matching data is the same as the color ring resistor).
Because of the small size of the small output power Zener diode, it is difficult to mark the model and specifications on the water pipe. Therefore, some overseas products choose the color ring to indicate its allowable and stable working voltage value. Like the color ring resistors, the colors of the ring are brown, red, orange, yellow, green, blue, purple, gray, white, and black. They are used to indicate the value of 1, 2, 3, 4, 5, 6, 7, 8, 9, 0.
Some Zener diodes have only 2 color circles, while others have 3 color circles. Close to the negative stage is the first ring, followed by the second and third rings. There are only 2 color circles. The allowable stable working voltage is two digits, namely "××V" (a few dozen volts). The first ring indicates the standard value on the tens digit of the working voltage, and the second ring indicates the standard value on the single digit. For example, if the tones of the first and second rings are red and yellow, it is 24V.
has 3 color circles, and the second and third color circles have the same tone. The allowable stable working voltage is an integer amount and contains a decimal, namely "×.×V" (a few volts in several aspects). The first ring indicates the standard value on the single digit of the operating voltage. The second and third color circles (the same hue) indicate the value of the tenth place (the first place after the decimal place). For example, if the tones of the first, second, and third rings are gray, red, and red, it is 8.2V.
has 3 color circles, and the second and third color circles have different tones. The allowable stable working voltage is a two-digit integer amount with a decimal, that is, "××.×V" (a few volts in dozens of areas). The first ring indicates the nominal value on the tenth place of the working voltage. The second ring indicates the value of the single digit. The third ring indicates the value of the tenth place (the first place after the decimal place). But this kind of situation is rare, such as: brown, black, yellow (10.4V) and brown, black, gray (10.8V) common Zener diode model specification correspondence table (Note: The diode model number starts with 1. Such as 1N4728, 1N4729, etc.)
The above explained is the identification method of color ring Zener diode, I hope it will be helpful to you after reading it. If you want to know more about Zener diode related information, please contact customer service online or call our company's service Hotline (upper right corner of the website) for consultation, we will be happy to provide you with quality service!