Year1
- 型号：
- MC-156
- 频率：
- 32.768KHZ
- 尺寸：
- 3.3mmx1.7mm
Imported quartz crystal oscillator, SMD crystal oscillator, agent SMD crystal oscillator, Epson crystal oscillator is famous for its tuning fork type quartz crystal resonator 3. series. At present, the Epson brand is spread all over the world, and the application range of kilohertz crystals is also It is relatively broad, and all timing products require the use of a series of crystals. This series of products has small, thin quartz crystal resonators, which are especially suitable for market areas with miniaturization requirements. It corresponds to ceramic resonators (large deviation) and ordinary quartz It is a cost-effective product in the middle field of crystal resonators (small deviation). It is most suitable for B digital products, players, digital cameras, notebook computers, mobile phones, etc.
The Seiko Epson Group has established its presence around the world Developed a company with employee names. Seiko Epson is the core enterprise of the Epson Group. Seiko Epson Crystal Oscillator Yijin Electronics sells small-volume SMD crystal oscillators. The quartz crystal oscillator product itself has excellent heat resistance and environmental resistance characteristics that meet the requirements of lead-free According to the reflow temperature curve requirements of soldering, the metal-cased quartz crystal oscillator allows the product to exhibit better impact resistance than the ceramic crystal oscillator casing when packaged
The SMD surface crystal 3. series has an ultra-small, thin, and lightweight surface SMD tuning fork type quartz crystal resonator, SMD crystal oscillator
The product itself has excellent heat resistance and environmental resistance. It can exert excellent electrical characteristics in the fields of office automation, home appliances, and mobile communications, and complies with lead-free standards. , to meet the reflow temperature curve requirements of lead-free soldering, the metal-cased quartz crystal oscillator enables the product to exert better impact resistance when packaged than the ceramic crystal oscillator casing
Crystal oscillator manufacturing process
No matter what type of sticker it is Chip crystal oscillator model, each crystal oscillator needs to go through many processes from design to production. Even polishing the wafer requires a lot of effort. It is not easy to hold something with a few millimeters with tweezers. All produced by Yijin Electronics Quartz crystal oscillators must go through three or more processes before leaving the factory. The following major items are international standards for finished product testing. Quartz crystals are artificially cultivated, and quartz crystal rods are artificially planted in the autoclave. The crystal rods are taken out, and the crystal rods are oriented first. Cutting the crystal rod, orienting the cut wafer, sorting the thickness of the quartz wafer, rough grinding of the wafer, medium grinding of the wafer, fine grinding, gardening of the wafer, cutting and edge grinding, roller path Edge, wafer corrosion, and wafer frequency sorting. In the early days, wafer frequency sorting was done manually, but now machines are put into automatic sorting. After so many complicated processes, the production of wafers is complete. Let's take a look at the production process of the finished quartz crystal oscillator. First, the wafer is cleaned, silver-plated, and put on the shelf. Then, the wafer is fine-tuned, dehumidified, sealed, tested, insulated, aged, and tested after aging. , laser printing, packaging, after these processes, it will be considered a complete quartz crystal
Product size
Size
Use the crystal correctly
When using imported Epson crystal What issues need attention? How to use crystal oscillator correctly? Will it be affected if it accidentally falls to the ground? What do you need to pay attention to when welding?
The crystal oscillator is composed of a quartz plate, an electrode, a bracket (base) or an upper cover (), etc. The key part is the quartz plate. The quartz plate is an elastomer and has a natural frequency. The quartz plate is a piezoelectric body. , when resonating, the vibration amplitude is the largest and the impedance is minimum. When detuning, the impedance increases rapidly. The frequency stabilization conditions of a quartz resonator are mainly determined by three factors: load capacitance, excitation capacitance, and frequency and temperature characteristics
Quartz crystal oscillator is a It is a fragile component, so we need to pay attention to the following points:
For crystal oscillators that need to be trimmed, attention should be paid to the impact of mechanical stress
During the soldering process of the crystal oscillator, the temperature of the solder should not be too high. The time should not be too long to prevent the crystal from internal transformation and instability
After soldering, it must be cleaned to prevent the insulation resistance from not meeting the requirements
When the crystal oscillator shell needs to be grounded, ensure that the shell and pins Do not be accidentally connected to cause a short circuit, which will cause the crystal to not oscillate.
Make sure that the solder points of the two pins are not connected, otherwise it will also cause the crystal to stop oscillating.
For the storage method of the crystal oscillator, you must first Consider the humidity around it, take anti-extrusion measures, and place it in a dry and ventilated place to prevent the crystal from getting damp and causing changes in other electrical parameters
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