黄片一区二区三区,亚洲乱来欧美精品一,香蕉视频丁香五月,亚洲一二区在线视频观看

Welcome:Shanghai Zhicai Electronic Technology co., LTD
Language: Chinese ∷  English

Industry New

How is the in-line LED made up!

The in-line LED light-emitting diode is mainly composed of five materials: bracket, silver glue, wafer, gold wire and epoxy resin.

First, the bracket:

1), the role of the bracket: for conduction and support

2) The composition of the bracket: The bracket is formed by electroplating of the bracket material, and is composed of five layers of material, copper, nickel, copper and silver from inside to outside.

3), the type of bracket: with a cup holder for concentrating type, flat head bracket for a large angle astigmatism type Lamp.

A, 2002 cup / flat head: This kind of bracket generally does not require high angle and brightness, and its Pin length is about 10mm shorter than other brackets. Pin spacing is 2.28mm

B, 2003 cup / flat head: generally used to make a φ5 or more Lamp, the exposed pin length is +29mm, -27mm. The pin pitch is 2.54 mm.

C, 2004 cup / flat head: used to do the φ3 or so of the Lamp, Pin length and spacing with the 2003 bracket.

D, 2004LD/DD: used to make blue, white, pure green, purple Lamp, can be welded double wire, the cup is deep.

E, 2006: Both poles are flat-head type, used for flashing Lamp, solid IC, welding multiple lines.

F, 2009: used to make a two-color Lamp, two chips can be fixed in the cup, and three pin feet control the polarity.

G, 2009-8/3009: used to make a three-color Lamp, three chips in the cup, four pin feet.

Second, silver glue:

The role of silver glue: the role of fixing the wafer and conducting electricity.

The main components of silver glue: silver powder accounts for 75-80%, EPOXY (epoxy resin) accounts for 10-15%, and additives account for 5-10%.

Use of silver glue: refrigerate, need to be thawed and fully stirred before use. After the silver glue is left for a long time, the silver powder will precipitate. If it is not stirred evenly, it will affect the performance of the silver glue.

Third, the chip (Chip):

Light-emitting diode and LED chip structure

1), the role of the wafer: the wafer is the main component of the LED Lamp, is a luminescent semiconductor material.

2) Composition of the wafer: The wafer is made of gallium phosphide (GaP), gallium aluminum arsenide (GaAlAs) or gallium arsenide (GaAs), gallium nitride (GaN), etc., and its internal structure has unidirectional conductivity.

3), the structure of the wafer:

Solder single-wire positive (P/N structure) wafer, two-wire wafer. Wafer size unit: mil

The pads of the wafer are typically gold pads or aluminum pads. The shape of the pad is circular, square, cross, and the like.

4), the color of the wafer:

The color of the luminescence of the wafer depends on the wavelength. The classification of common visible light is roughly: dark red (700 nm), deep red (640-660 nm), red (615-635 nm), amber (600-610 nm), yellow (580-595 nm). Yellow-green (565-575 nm), pure green (500-540 nm), blue (450-480 nm), purple (380-430 nm).

White light and pink light are a mixture of light effects. The most common is a mixture of blue + yellow phosphor and blue + red phosphor.

5), the main technical parameters of the wafer:

A, the volt-ampere characteristic of the wafer:

B. Forward Voltage (VF): A voltage applied across the wafer to cause the wafer to conduct. This voltage is related to the wafer itself and the test current. If the VF is too large, the wafer will be broken down.

C. Forward current (IF): The forward conduction current generated by the wafer after a certain voltage is applied. The size of the IF is related to the magnitude of the forward voltage. The operating current of the wafer is around 10-20 mA.

D. Reverse Voltage (VR): The reverse voltage applied to the wafer.

E. Reverse current (IR): refers to a leakage current generated by the wafer after a reverse voltage is applied. The smaller the current, the better. Because the current is large, the wafer is easily reversed.

F, brightness (IV): refers to the brightness of the light source. Unit conversion: 1cd=1000mcd

G. Wavelength: reflects the luminescent color of the wafer. Wafers of different wavelengths have different illuminating colors. Unit: nm

H, light: It is a kind of electromagnetic wave. Electromagnetic waves having a wavelength of 0.1 mm to 10 nm are called light.

Light can be divided into: wavelength greater than 0.1mm is called radio wave; 760nm-0.1nm is called infrared light; 380nm-760nm is called visible light; 10nm-380nm is called ultraviolet light; and wavelength less than 10nm is X-ray light.

Fourth, the gold line:

The role of the gold wire: connect the wafer PAD (pad) to the bracket and make it conductive.

The purity of the gold wire is 99.99% Au; the elongation is 2-6%, and the size of the gold wire is 0.9 mil, 1.0 mil, 1.1 mil, and the like.

5. Epoxy resin:

The role of epoxy resin: to protect the internal structure of the Lamp, can slightly change the color, brightness and angle of the Lamp; shape the Lamp.

The encapsulating resin comprises four parts: A glue (main agent), B glue (hardener), DP (diffusion agent), and CP (colorant). Its main components are epoxy resin (Epoxy Resin), acid anhydride (acid anhydride Anhydride), high light diffusing filler (Light diffusion) and thermal stability dye (dye).

Six, the mold:

The mold strip is a mold for forming a Lamp, and generally has a circular shape, a square shape, a tower shape, and the like. The depth of the stent is determined by the height of the card. The mold strips should be stored in a clean and below room temperature environment, otherwise it will affect the appearance of the product.


用手機(jī)掃描二維碼關(guān)閉
二維碼
欧美日本高清在线不卡区| 嘿咻嘿咻免费区在线观看| 精品中文无码一区二区| 亚洲AV极品无码专区在线观看| 日韩人妻无码精品-专区| 那曲县| 久热这里只有国产中文精品视频| 人人妻人人爽| 男女无遮挡XX00动态图120秒| 夏津县| 国产午夜精品免费一区二区三区| av大尺度一区二区三区| 久久66| 激情综合色综合啪啪五月丁香| 伊人久久亚洲| 亚洲免费观看视频| 阳江市| 中文字幕人成乱码熟女| 久久精品无码AV| 8kraw| 欧美日本国产VA高清CABAL | 久久成人免费精品网站| 亚洲自偷自拍熟女另类 | 全州县| 国产尤物精品自在拍视频首页| 18禁无遮挡羞羞污污污污免费| 在线内射| 内射极品少妇xxxxxhd| 亚洲一区日韩高清中文字幕亚洲 | 午夜精品一区二区三区在线观看| 日日操夜夜爽| 亚洲gv天堂无码男同在线观看| 天天爽夜夜爽夜夜爽| 一木久道热线| 末发育娇小性色XXXXX| 亚洲中文字幕久久无码| 在线午夜福利| 天天看高清影视在线观看 | 欧美成人WWW在线观看| 中文字幕在线无码一区二区三区| 中国性老太cd大全|