Types of crystal oscillators

Crystal oscillators are essential components in electronic devices and are widely used in various electronic devices. There are many types of crystal oscillators, and below we will classify and introduce them from different perspectives.

1、 Classified by frequency:

1. Low frequency crystal oscillator: used in fields such as clock signals, timers, sensors, etc., with a frequency below 1MHz.

2. High frequency crystal oscillator: applied in wireless communication, RF, Bluetooth In areas such as Wi Fi, the frequency is above 1MHz.

3. Microwave crystal oscillator: used in satellite communication, radar, radio and other fields, with a frequency of over 100MHz.

2、 Classified by packaging form:

1. Plug in crystal oscillator: Insert crystal oscillator pins into circuit board sockets for use, often used in older devices or situations that require frequent replacement.

2. SMT crystal oscillator: It is widely used in modern electronic devices by attaching crystal oscillators to printed circuit boards, with small size, light weight, and strong shock resistance.

3、 Classified by purpose:

1. Universal crystal oscillator: suitable for general purposes of various electronic devices, such as computers, communication devices, household appliances, etc.

2. Special purpose crystal oscillators: designed for the special needs of specific electronic devices, such as high-precision and low-noise crystal oscillators in medical equipment, high-frequency and high stability crystal oscillators in satellite communication, etc.

4、 Classified by material:

1. Quartz crystal oscillator: Made of quartz crystals, it has high stability and precision and is widely used in various electronic devices.

2. Ceramic crystal oscillator: Made of piezoelectric ceramic materials, it has high frequency stability and low cost, and is widely used in products such as televisions, radios, and remote controls.

3. Crystal oscillator: Made with crystal crystals, it has a high cost and is mainly used in high-end products.

5、 Classified by shape:

1. Cylindrical crystal oscillator: The most common type with high stability and shock resistance, widely used in fields such as computers, communication equipment, and industrial control.

2. Square shaped crystal oscillator: compact and lightweight, easy to integrate on circuit boards, widely used in portable devices, smart homes and other fields.

3. Tubular crystal oscillator: With good shock resistance and waterproof performance, it is mainly used in outdoor equipment, industrial control, and automotive electronics.

In summary, crystal oscillators can be classified into various types based on different classification methods. When choosing a crystal oscillator, we need to consider and choose based on actual application needs and equipment characteristics. At the same time, attention should also be paid to its special physical properties during use and maintenance to ensure normal operation and extend its service life.