Naming of Schottky diodes — SUNMATE
Naming of Schottky diodes
Name of Schottky diode:
Schottky diode is named after its inventor, Dr. Schottky,
The complete name is: Schottky rectifier diode (abbreviated as SR),
It is also called Schottky barrier diode (abbreviated as SBD).
Schottky: Schottky
Rectifier: Rectifier
SR: Schottky rectifier diode
Schottky rectifier diode: Schottky rectifier diode, abbreviated as Sr, such as sr107, sr10100ct
Schottky: Schottky
Barrier: barrier
Sb: Schottky barrier diode
Schottky diode, also known as Schottky barrier diode (SBD), is also known as "sb1045ct, sr10100, sl..., bl..."
Schottky barrier diode: Schottky barrier diode, abbreviated as sb, such as sb107, sb1045ct
Schottky barrier diode: it is also abbreviated as SBD to name the product model prefix. But SBD does not use p-type semiconductor and n-type semiconductor
It is made by the principle of PN junction formed by conductor contact, but by the principle of metal semiconductor junction formed by metal semiconductor contact.
Therefore, SBD is also called metal semiconductor (contact) diode or surface barrier diode. It is a hot carrier diode.
About Schottky MBR series
Why are internationally common Schottky diodes named after "MBR"?
Because it was the first product model named by Motorola semiconductor, a world-famous semiconductor company
M: It is named after the earliest Motorola, taking M
B: Bridge bridge; Barrier: potential barrier
R: Rectifier "MBR" means rectifier device
Schottky Rectifier Diodes: Schottky rectifier diodes.
For example: mbr10200ct M: Motorola abbreviation M
B: Barrier1 abbreviation B
R: Rectifier abbreviation R
10: Current 10A
200: voltage 200V
C: Indicates TO-220AB package, usually semi plastic.
T: Indicates pipe assembly
Mbr1045ct, "C" means TO-220 package; Mbr6045pt, where "P" means to-3p package
The packaging form of components is also reflected in the fourth letter of the prefix of the model, for example:
Mbrd10100ct: D in the fourth bit, indicating the DPAK package of the patch
Mbrb10100ct: B in the fourth position, indicating patch D2Pak package
Mbrf10100ct: F in the fourth position, indicating TO-220 fully plastic encapsulated
TO-252, that is, patch DPAK package; To-263, that is, patch D2Pak package; The naming of any model has its regularity
Follow. For example: mbr20100ct, in the model, 20100 is Arabic numerals, in 20100, 20 is current and 100 is voltage. and so on.
MBR, Sr, SL, Sb, STB and STP are all common model names of Schottky products by semiconductor companies. Different manufacturers have different names.
1. Schottky is a low-power, ultra-high-speed semiconductor device, which is widely used in switching power supply, frequency converter, driver and so on
Circuit, used as high-frequency, low-voltage, high current rectifier diode, freewheeling diode, protection diode, or in microwave communication and other circuits
Rectifier diode and small signal detection diode.
2. Structure of Schottky diode Schottky diode is very different from PN junction diode in structure principle. Its interior is
It consists of anode metal (barrier layer made of molybdenum or aluminum), silicon dioxide (SiO2) electric field elimination material, n epitaxial layer (arsenic material)
Material), n-type silicon substrate, n cathode layer and cathode metal.
A Schottky barrier is formed between the n-type substrate and the anode metal.
When a positive bias voltage is applied at both ends of the Schottky barrier (the anode metal is connected to the positive pole of the power supply, and the n-type substrate is connected to the negative pole of the power supply)
The barrier layer becomes narrower and its internal resistance becomes smaller; On the contrary, if a reverse bias is applied at both ends of the Schottky barrier, the Schottky barrier layer becomes wider and its
The internal resistance increases.
Schottky diodes are divided into two packaging forms: lead and surface mount (patch).
Schottky diodes with lead packaging are usually used as high-frequency high current rectifier diodes, freewheeling diodes or protection diodes
use. It has two packaging forms: single tube type and pair tube (double diode) type.
Schottky's influence on the tube is:
Common negative (the negative pole of the two tubes is connected), common positive (the positive pole of the two tubes is connected) and
There are three pin lead out methods in series (the positive pole of one diode is connected to the negative pole of the other diode).
Surface encapsulated Schottky diodes have many packaging forms, such as single tube, double tube and three tube, with a ~ 19 pins
Export method.