The production process of the epitaxial wafer is very complicated. After the epitaxial wafer is finished, the next epitaxial wafer is randomly selected from nine points for testing. The products that meet the requirements are good products, and the others are defective products (the voltage deviation is large, the wavelength is short or Long, etc.). The epitaxial wafer of the good product will start to be the electrode (P pole, N pole), then the laser will be used to cut the epitaxial wafer, and then the percentage of 捡, according to different voltage, wavelength, brightness, fully automated inspection, that is, formation LED chip (square chip). Then, visual inspection is carried out to separate the defects or the electrodes from wear and tear. These are the latter crystals. At this time, there are wafers on the blue film that do not meet the normal shipping requirements, and it is naturally a side film or a **. The epitaxial film of the defective product (mainly some parameters do not meet the requirements), it is not used for the square piece, it is directly used as the electrode (P pole, N pole), and does not do the sorting, which is the LED circle on the market. The film (there are also good things in it, such as squares, etc.).

Semiconductor manufacturers mainly use polished Si wafers (PW) and epitaxial Si wafers as raw materials for ICs. Epitaxial wafers were used in the early 1980s, which have certain electrical characteristics not found in standard PW and eliminate many surface/near surface defects introduced in crystal growth and subsequent wafer processing.

Historically, epitaxial wafers have been produced and used by Si wafer manufacturers and are used in small quantities in ICs. It requires deposition of a thin single crystal Si layer on the surface of a single crystal Si wafer. The thickness of the epitaxial layer is generally 2 to 20 μm, and the thickness of the substrate Si is 610 μm (150 mm diameter sheet and 725 μm (200 mm sheet).

Epitaxial deposition can be used to process multiple wafers at the same time, or to process a single wafer. The monolithic reactor produces the best quality epitaxial layers (thickness, uniformity of resistivity, and low defects); this epitaxial wafer is used in the production of 150mm "leading edge" products and all important 200mm products.

Epitaxial product

Epitaxial products are used in four areas, and CMOS complementary metal oxide semiconductors support leading edge processes that require small device sizes. CMOS products are the largest application area for epitaxial wafers and are used by IC manufacturers for non-recoverable device processes, including flash memory and DRAM (Dynamic Random Access Memory) for microprocessors and logic chips and memory applications. Discrete semiconductors are used to fabricate components that require precision Si characteristics. The "exotic" semiconductor class contains specialty products that use non-Si materials, many of which are incorporated into epitaxial layers using compound semiconductor materials. Buried layer semiconductors are physically isolated using heavily doped regions within the bipolar transistor elements, which are also deposited during epitaxial processing.

At present, in 200mm wafers, epitaxial wafers account for 1/3.2000 years, including burying layers, CMOS for logic devices accounted for 69% of all epitaxial wafers, DRAM accounted for 11%, and discrete devices accounted for 20%. By 2005, CMOS Logic will account for 55%, DRAM for 30%, and discrete devices for 15%.

Door Lock Motor Characteristics 1. No direction: don't need to distinguish the door direction, left and right sides, both inside and outside the door, can be universal. (convenient purchase locks and reduce inventory). 

Door Lock Motor  Dc Gear Motor

2. Power: the power consumption is only equivalent to one 5 of the electric control lock, electric lock, 3 A magnetic lock power to open the door, often consumes 0.27 A. And spiritual lock unlock instantaneous current is less than 0.5 A, reduced the entrance guard, talkback host power consumption.

3. No collision: close the door without collision, reduces the choice of door closers requirements (not necessarily with 65 kg of door closers, door closers are free to choose to suit the door), to solve the building door because the door closers clash of the hydrodynamic force is too high, it is not easy to make the door more deformation, prolong the service life of the body. 

4. The voice is light: close the door automatically locked, no noise, solves the noise due to electric control lock itself. 

5. Life is long, life is up to 350000 times

Operating temperature range:

Mini Door Lock Motor should be used at a temperature of -10~60℃.

The figures stated in the catalog specifications are based on use at  ordinary room temperature catalog specifications re based on use at ordinary room temperature  (approximately20~25℃.

If a  Lock Motor  is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.

Storage temperature range:

 lock motor  should be stored ta a temperature of -15~65℃.

In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.

Service life:

The longevity of  Door Lock Motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.

●Use with a load that exceeds the rated torque

●Frequent starting

●Momentary reversals of turning direction

●Impact loads

●Long-term continuous operation

●Forced turning using the output shaft

●Use in which the permitted overhang load or the permitted thrust load is exceeded

●A pulse drive ,e.g.,a short break,counter electromotive force,PWM control

●Use of a voltage that is nonstandard as regards the rated voltage

●Use outside the prescribed temperature or relative-humidity range,or in a special environment.

●Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.

when it come to volume production,we're a major player as well .each month,we rurn out  600000 units,all of which are compliant with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department to service to you

Looking forward to your inquiry. Welcome to our factory.

Lock motor

Door Lock Motor

Door Lock Motor,Mini Door Lock Motor,Door Lock Dc Motor,Door Lock Gear Motor

Shenzhen Shunchang Motor Co., LTD. ,