Original title: diode manufacturer _ chottky diode manufacturer
chottky diode is a kind of diode invented and named by Dr. chottky, and SBD is chottky barrier diode. English name: Schotky Barrier Diode；; Abbreviation: SBD. SBD diode is not made by PN junction principle formed by contact between p-type semiconductor and n-type semiconductor, but by metal-semiconductor junction principle formed by contact between metal and semiconductor. Therefore, SBD, also known as metal semiconductor (contact) diode or surface barrier diode, is a hot carrier diode.
Shenzhen Shunhai Technology Co., Ltd. is a professional agent supplier of chottky diode manufacturers. It is mainly a spot supplier of diode models such as patch chottky diode, plug-in chottky secondary, small-signal chottky diode, small-signal chottky diode, bridge pile, ordinary standard rectifier diode, fast recovery (rectifier) diode, ultra-fast recovery (rectifier) diode, high-efficiency fast recovery (rectifier) diode, zener diode and switching diode. Then, the models and specifications of commonly used leaded chottky diodes introduced by Xiaobian today are as follows.
The main selection parameters of commonly used lead chottky diodes are as follows
Advantage and disadvantages of chottky diode
Advantages: SBD has the advantages of high switching frequency and low forward voltage, but its breakdown voltage is relatively low, mostly not higher than 60V, and the highest is only about 100V, which limits its application range. Like the freewheeling diodes of power switching devices in SMPS and PFC circuits, high-frequency rectifier diodes above 100V for transformer secondary, high-speed diodes of 600V ~ 1.2 kV for RCD buffer circuits and 600 V diodes for PFC boost, only fast recovery epitaxial diodes (FRED) and ultra-fast recovery diodes (UFRD) are used. The recovery time Trr of UFRD is also over 20ns, which cannot meet the needs of SMPS with 1 MHz ~ 3 MHz in fields such as space station. Even for SMPS with hard switching of 100kHz, due to the large conduction loss and switching loss of UFRD and high shell temperature, a large radiator is needed, which increases the size and weight of SMPS, and does not conform to the development trend of miniaturization and thinness. Therefore, the development of high voltage SBD above 100V has always been a research topic and a hot spot. In recent years, SBD has made breakthrough progress, high-voltage SBD of 150V and 200V has been put on the market, and SBD of more than 1kV made of new materials has been successfully developed, thus injecting new vitality and vitality into its application.
Disadvantages: The biggest disadvantage of chottky diode is its low bias and large leakage current. Like chottky diode made of silicon and metal, its bias rated withstand voltage is only up to 50V, while the leakage current value is positive temperature characteristic, which is easy to increase rapidly with the increase of temperature. In practical design, attention should be paid to the hidden worry of thermal runaway. In order to avoid the above problems, the bias voltage of chottky diode in actual use is much smaller than its rated value. However, the technology of chottky diode has also improved, and its bias rating can reach 200V at most.
chottky diode application
The structure and characteristics of SBD make it suitable for high-frequency rectification in low-voltage and high-current output occasions, detection and mixing at very high frequencies (such as X-band, C-band, S-band and Ku-band), and clamping in high-speed logic circuits. SBD is often used in IC, like SBD? TTL integrated circuit has long been the mainstream of TTL circuit and widely used in high-speed computers.
In addition to the characteristic parameters of common PN junction diode, the electrical parameters of SBD used for detection and frequency mixing also include intermediate frequency impedance (which refers to the impedance presented to the specified intermediate frequency when SBD applies rated local oscillation power, generally between 200 Ω and 600 Ω), voltage standing wave ratio (generally ≤2) and noise figure, etc.
The above content mainly introduces the introduction of chottky diode, the general parameters of commonly used lead type of chottky diode, the advantages and disadvantages of chottky diode, and the application of chottky diode. If you need chottky diode and other products, please leave a message or call the telephone number: 0755-28100016; Massive chottky diodes are available from stock, and they are obtained from the original factory with quality assurance. Welcome to take samples for testing.
Shenzhen Shunhai Technology Co., Ltd. is a professional fuse, patch fuse, recoverable fuse, self-recovery fuse, ELLON resistor, patch resistor, integrated inductor, TVS, ESD, PPTC, GDT, TSS, MOS, LDO and other protective devices. The electrostatic tube agency brands are Huade, Saruiwei, Shuokai, Tianer, Guoju and Housheng EVER, OHMS, MURATA, TAIYO, SUNLROP, TDK, LRC, ITE, SAMSUNG, professional sales teams and massive spot stocks provide customers with better service, and welcome consultation and cooperation.
Label: diode manufacturer, chottky diode manufacturer
