What does diode glass seal mean, and what diode is Z9 1B of glass seal? What does Z9 1B stand for?

Diode. Glass sealing means that the outside of the semiconductor die of the diode is protected by transparent glass sealing, and the glass-encapsulated diode can see the inside of the diode through the glass shell. Non-glass encapsulated diodes, opaque and invisible.

Glass packaging is cheap, and in places with high requirements, light interference may occur due to the influence of external light.

A diode, an electronic component, is a device with two electrodes that allows only a single direction of current to flow through it, and many are used to apply its rectification function. Varactor diodes, on the other hand, are used as electronic tunable capacitors. The current directivity of most diodes is often referred to as the "rectification" function.

The most common function of a diode is to allow only current to pass through a single direction (known as forward bias) and to block it in reverse direction (known as reverse bias). Therefore, the diode can be thought of as an electronic version of the check valve.

early vacuum electron diodes; It is an electronic device that is capable of conducting electric current in one direction. Inside the semiconductor diode there is a p-n junction.

Two lead terminals.

This electronic device conducts a unidirectional current in the direction of the applied voltage. Generally speaking, a crystal diode is a p-n junction interface formed by the sintering of p-type semiconductors and n-type semiconductors. A space charge layer is formed on both sides of its interface, which constitutes a self-built electric field.

When the applied voltage is equal to zero, due to the p-n junction carriers on both sides.

The diffusion current caused by the concentration difference and the drift current caused by the self-built electric field are equal and in an electrically balanced state, which is also a diode characteristic under normal conditions.

Early diodes consisted of "whisker crystals" as well as vacuum tubes.

Most of today's most common diodes use semiconductor materials.

Such as silicon or germanium.

Glass sealing means that the outside of the semiconductor die of the diode is protected by transparent glass sealing, and the glass-encapsulated diode can see the inside of the diode through the glass shell.

Non-glass encapsulated diodes, opaque and invisible.

Glass encapsulation, generally cylindrical, red, such as some SMD regulator tubes.

Non-glass package, generally square, black, such as some ordinary diodes M7 and the like.

Glass-encapsulated, high-temperature resistant, but heat dissipation is mainly pin-dependent.

The diode die is protected by a housing package before it is suitable for use.

The shell packaging method is divided into glass shell, molded plastic sealing, resin coating, metal shell, the most common] resin coating, also known as thick film coating, ceramic face sheet heat dissipation, the most cost-effective, between high unit price molding and low quality glass shell packaging, synthesizing its advantages, excluding its disadvantages.

Metal shells are mostly used in high-power diodes and have the best heat dissipation.

The glass-encapsulated diode has a large search hall may be a voltage regulator tube, so the meaning of ty56 should be a voltage regulator tube.

If it is a Pushan leaky repentance diode, then TY56 is a model, which is not interesting.

Sitting alone in the secluded grate, playing the piano and howling.

People in the deep forest don't know, and the bright moon comes to take pictures.

37, Gu Lang Yuexing Li Bai.

This 50 symbol is the voltage marker. It shows that the withstand voltage of this tube is 50V.

It's just the difference between the logos of each manufacturer, you just need to look at the values.

It's just that the package is different, and the characteristics are basically the same. It's not the same size.

This is a 1N4148 diode, a high-frequency diode, withstand voltage 75V, current 450mA, recommended voltage less than 50V, current less than 250mA, parameters can be found on the Internet 1N4148

The Zener diode will be printed with a circle of 3 or 4 English numbers, and you will know that it is the English number arrangement when you turn around and see it. How can I answer that I can't see the other side at all? You can only guess the following values.

Probably 1N4748, or not a Zener diode, it should be a small signal diode 1N4148.

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This is a commonly used 4148 diode, which is widely used on circuit boards, with a withstand voltage of about 70V and a current of 400mA

If it is a glass seal, it can be replaced by in4148, in fact, the parameters are the same as 4148, but the printing symbol is different.

Generally speaking, if there is a green dot or a bevel on the SMD light-emitting diode, the polarity of this side should be negative; If there are four (or more) electrodes on the SMD light-emitting diode, the same green dot or missing an oblique angle, the polarity of this side should be negative, and the other electrodes are positive.

It only indicates polarity, not the model and type, and one end with a black line and a blue line is a negative pole.