What is the Principle of Schottky Diodes

时间： 2024-05-31 来源：Lujing Official Website

技术问答

选型帮助

研发客服

商务客服

Schottky diodes,Schottky barrier diodes,SBD,PN junction rectifier

Schottky diodes are named after their inventor Dr. Schottky, also known as Schottky barrier diodes, SBD is short for Schottky barrier diodes. So what is the principle of Schottky diodes? Let's take a look.

Schottky diode SBD is not the use of P-type semiconductor and N-type semiconductor contact PN junction principle of production, but the use of metal and semiconductor contact formed by the principle of metal - semiconductor junction made.

Schottky diodes are metal-semiconductor devices in which the noble metal (gold, silver, aluminum, platinum, etc.) is a positive electrode and the N-type semiconductor B is a negative electrode. The Schottky diode is formed by utilizing the potential barrier formed on the contact surface. Because there are a large number of electrons in N-type semiconductors and only a very small amount of free electrons in the noble metal, the electrons diffuse from high-concentration B to low-concentration A atoms. Obviously, there is no hole in the metal A, there is no diffusion of holes from A to B diffusion. As the electrons continue to diffuse from B to A, the B surface electron concentration gradually decreases and the surface neutrality is destroyed. As a result, a potential barrier is formed and the electric field direction is B → A. However, under the action of the electric field, the electrons in A also produce a drift movement from A → B, thereby weakening the electric field due to the diffusion movement. When a certain area of space charge is established, the Schottky barrier is formed by a relative balance between the electron drift caused by the electric field and the electron diffusion caused by the different concentrations.

A typical Schottky rectifier has an internal circuit structure that uses an N-type semiconductor as a substrate on which an N-epitaxial layer with arsenic as a dopant is formed. The anode is made of a barrier material such as molybdenum or aluminum. Silicon dioxide (SiO2) to eliminate the edge of the electric field and improve the pressure value of the tube. N-type substrate has a very small on-state resistance, the doping concentration higher than the H-layer 100% times. An N + cathode layer is formed under the substrate to reduce the contact resistance of the cathode.

Schottky diode common models SS, MBR, SR, etc., on behalf of models SS510, MBR1030, SR150 and so on.

In summary, the principle of Schottky diodes and PN junction rectifier have a great deal of difference is usually referred to as PN junction rectifier rectifier tube, and the metal - semiconductor rectifier called Schottky rectifier Tubes, silicon-on-silicon process Schottky diodes have also been introduced, which not only saves precious metals, drastically reduces costs, but also improves the consistency of the parameters.

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由三年不鸣转载自Lujing Official Website，原文标题为:What is the principle of Schottky diodes，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

全部评论（0）

暂无评论

肖特基二极管(SBD)与普通二极管的区别

总的来说，肖特基二极管属于二极管的一种，无论哪种二极管，都脱离不了二极管的单向导电性，由于很多人在肖特基的选型及应用上有所疑问，本文我们就主要来介绍一下肖特基二极管和普通二极管的区别。首先，肖特基二极管不是利用P型半导体与N型半导体接触形成PN结原理制作的，而是利用金属与半导体接触形成的金属－半导体结原理制作的，这是它与普通二极管在最根本上区别。

技术探讨发布时间 : 2024-07-04

二极管的历史和原理

二极管的接合构造现在大有PN结合和肖特基形。前者是半导体和半导体结合，细分有扩散接合形和台地形。后者是半导体和金属之间发生的效果。结合这个语言通常不在二极管里表现。在这里为了容易理解分列在这里。现在，实现小功耗高速性的肖特基接合形被注目，鲁晶半导体生产的SBD具有较大优势。

技术探讨发布时间 : 2024-07-03

7大常用二极管的特性及标识

本文主要介绍7大常用二极管的特性及标识：肖特基二极管肖特基（Schottky）二极管，又称肖特基势垒二极管（简称SBD），它属一种低功耗、超高速半导体器件。最显著的特点为反向恢复时间极短（可以小到几纳秒），正向导通压降仅0.4V左右。

技术探讨发布时间 : 2024-05-08

鲁晶携多款功率器件产品出席第十四届亚洲电源技术发展论坛，为新能源、光伏、充电桩等领域应用提供服务

鲁晶半导体携旗下Si SBD/FRD/SCR、Si MOS/IGBT、SiC Diodes、SiC MOSFET等功率器件产品出席第十四届亚洲电源技术发展论坛，产品广泛应用于各类智能家电、电动工具、新能源、充电桩、光伏、电源、工控等领域。

原厂动态发布时间 : 2024-01-09

鲁晶（LuJing）二极管/三极管/功率器件/SiC器件/GaN器件选型指南

描述- Jinan Lujing Semiconductor Co., Ltd. is a national high-tech company mainly engaged in the R&D. production and sales of semiconductor power components (diodes, transistor, MOS and Sic power components). "LuJing" brand diodes, transistors and MOS are widely used in intelligent home appliances, electrical tools, power supply, industrial control, adapters, LED lighting, tele-communication and etc.

型号- 1N4745,1A1,1N4744,1A2,1N4747,SMCJ36CA,ESD9D3V3C,1A3,1N4746,1A4,1N4749,P4SMA16C,1A5,1N4748,1A6,P4SMA16A,1A7,SMAJ6.0CA,SMAJ40CA,8050S,SMBJ5955B,SMBJ51A,RB521M9-30,2306,2305,P6SMB56A,2304,2303,2302,2301,2300,P4SMA160,P6KE22A,1N4750,2SD2137A,1N4752,1N4751,2309,1N4754,1N4753,2307,1N4756,1N4755,MMBT4401,SS120W,1N4758,1N4757,MMBT2222,1N4759,P6KE24A,MMBT4403,SMBJ5956B,T1117-5,2315,2314,2313,TIP110,2312,TIP111,TIP112,2310,P4SMA170,1N4761,1N4760,1.5SMC13CA,7N65F,BZX55C8V2,1N4763,1N4762,SMCJ14CA,1N4764,2EZ270D5,SMCJ78A,SMCJ190A,P4SMA18C,P4SMA18A,ZMM55-C36,MBR10200CT,ZMM55-C33,8N60,1.5SMC400C,2SB1260,P4SMA16CA,TIP120,SMCJ100CA,TIP121,TIP122,ZMM55-C30,P6KE68C,2EZ68D5,P4SMA180,P6KE20A,SMBJ300A,1.5KE150A,SMBJ150CA,BZT52C7V5S,BZT52C8V2,P4SMA91CA,MMBD2838,MMBD2836,SMAJ70A,RB400D,SMAJ75CA,ZMM55-C24,5050TRGBC,P6KE220,ZMM55-C22,FR601,FR602,FR603,FR604,SMBJ16CA,FR605,ZMM55-C27,FR606,FR607,M8550,ZMM55-C20,P6SMB170CA,2EZ33D5,1.5KE220CA,SMCJ30A,1SMA5930B,P6KE27A,2SA1036,2SA1037,P6SMB51C,2N5401,2N5400,P6SMB51A,HER301,SMBJ5950B,SMB2EZ9.1,1.5SMC9.1,1SMA4731A,SR180,SMCJ75A,1SMA5931B,SMAJ100A,P4SMA300C,P4SMA300A,HER308,HER307,HER306,HER305,HER304,1N4448WS,HER303,SMBJ5952B,HER302,P6SMB250A,SMBJ5951B,P4SMA160CA,1.5SMC400A,P4KE180A,1SMA4730A,2EZ11D5,5050TYC,P6SMB250C,P4SMA82CA,2SA1012,2SA1013,2SA1015,MB4S/F,1.5KE7.5A,SMBJ5953B,SMBJ400CA,P6SMB120A,ZMM55-C4V7,P6SMB120C,1SMA4733A,P6KE250,ZMM55-C4V3,2SA1020,1H1,1H2,2EZ24D5,P6SMB51CA,1H3,1H4,1H5,2EZ3.0D5,1.5SMC300CA,1H6,1H7,1H8,P6SMB8.2C,P6SMB300CA,SMCJ220CA,A733,SMBJ5954B,P6SMB8.2A,KBPC25005,1SMA4732A,1.5KE51A,P6KE100A,1.5SMC39CA,P6KE100C,P4SMA56C,P4SMA56A,1N5371B,P6SMB160,BAV20WS,1.5KE36CA,1SMA5934B,P6SMB16C,BZX84C9V1,P6SMB300C,1SS400,P6SMB300A,P6SMB16A,2EZ190D5,0603 红白双色,1SMA4735A,2N7002K,SMAJ18CA,1N5370B,1.5KE170CA,MBR20100CT,P6SMB150,P4SMA170C,1SMA5935B,P4SMA170A,P6SMB15C,1.5SMC47A,SMAJ250CA,P6SMB15A,1.5SMC47C,SMCJ18CA,1SMA4734A,P4SMA10A,1N5240B,1SMA5932B,SR3200,1.5KE56A,1N5373B,C945,US2B,1.5SMC440A,US2A,SS210W,1.5SMC440C,US2K,US2J,P4SMA100,P6SMB91CA,1.5SMC170CA,US2G,9N65F,MBR2050CT,US2D,P4SMA12CA,1SMA4737A,US2M,7N60F,P6SMB130,P6SMB16CA,BZT52C3V9S,P4SMA11A,1N5372B,1SMA5933B,SMBJ90A,FR201,US1B,FR202,US1A,FR203,B0540W,FR204,SMBJ12CA,FR205,FR206,P6SMB12C,FR207,2N7002W,US1J,MBR1030CT,P6SMB13A,P4SMA110,PXT8550,US1G,P6SMB13C,US1D,1SMA4736A,SMAJ130CA,SMBJ350CA,SMCJ70A,SMB3EZ7.5,US1M,P4SMA10C,2SD965A,US1K,SD101BWS,P4SMA12C,SMBJ5.0A,P6SMB120,P4SMA12A,SI9410DY,2SD1766,1N5242B,1N5375B,ZMM55-C13,1SMA5938B,1.5SMC220A,ZMM55-C11,ZMM55-C12,ZMM55-C18,P6SMB11C,T1117-ADJ,ZMM55-C15,SMCJ100A,1.5SMC220C,ZMM55-C16,2EZ7.5D5,P6SMB12A,P4SMA120,ZMM55-C10,RL206,RL207,RL204,1.5KE10A,RL205,RL202,RL203,1SMA4739A,RL201,P4SMA11C,1N60,P4SMA13C,P6SMB110,P4SMA13A,1N5374B,1N5241B,P6KE180CA,US3D,1SMA5939B,US3B,US3A,BZT52C3V3S,P6SMB10A,P6SMB10C,US3K,15SQ0100,US3J,P4SMA47CA,P6SMB11A,P4SMA130,US3G,2EZ15D5,US3M,1SMA4738A,P6SMB100CA,P6SMB100,1.5KE12A,1N5244B,1N5377B,P4KE400A,BZT52C3V6S,1SMA5936B,MBR25100CT,ZMM55-C8V2,SMBJ170A,1.5KE10CA,C2611,P4SMA15C,1N5243B,1.5KE11A,P4SMA15A,1N5376B,2EZ200D5,P6SMB56C,1SMA5937B,P6SMB82CA,MUR1620C,2EZ9.1D5,P4SMA150,MPSA93,SMBJ5.0CA,FR251,FR252,FR253,P6SMB47CA,FR254,FR255,FR256,FR257,1.5SMC250CA,PXT8050,1N5246B,1N5379B,SS510,BZX84C5V6,P6SMB220CA,ZMM55-C9V1,BZX84C5V1,3DD13001B,SMB2EZ120,SMCJ85CA,SMB2EZ130,P4SMA130A,P6KE7.5,1N5378B,MJD41C,1N5245B,P4KE20A,SMBJ78CA,1.5SMC51A,P4SMA130C,P4KE68A,1.5SMC51C,SI4953DY,SMAJ48CA,SMBJ43CA,MBR2080CT,3DD13002B,BZX584C6V2,10N60F,BZX584C6V8,SMB2EZ140,2EZ19D5,SMCJ7.5A,SMAJ400A,1N5248B,1SMA5928B,1N5333B,2SC2712,2SD1664,MJD42C,2SC2715,2SC2714,SMCJ110A,SMBJ18A,3DD13003B,3528SYC,1.5SMC75CA,SMCJ8.5CA,MPSA56,MPSA55,SMB2EZ150,P6SMB12CA,P6KE220CA,SMAJ300CA,1N5247B,P4SMA30CA,1N914,1SMA5929B,SS520,1.5KE27CA,D882,SMAJ26CA,BC556,1.5SMC6.8C,ESD5Z12,1.5SMC6.8A,MPSA44,MPSA43,SMBJ5919B,1.5SMC56C,1N5335B,KBPC2508,10SQ0100,KBPC2506,KTA1298,KBPC2504,HZ11,KBPC2501,HZ12,KBPC2502,P6KE100CA,HZ15,SMBJ16A,HZ16,2SD669,SMBJ30CA,2SD668,1.5SMC56A,0603 白色,HZ18,SMAJ36A,P4SMA51C,P4SMA51A,BZT52C3V6,BZT52C3V9,2EZ4.7D5,1N5334B,2EZ3.9D5,BZT52C3V0,SMAJ8.5CA,BZT52C3V3,SMAJ180A,1N5249B,P4KE100A,1.5KE130CA,BCW61,KBPC2510,BCW65,P4SMA43CA,SMBJ17A,BCW66,BCW68,MMBTA05,MMBTA06,SMBJ120CA,2EZ120D5,RB156,KTA1273,RB157,RB154,RB155,6A1,KTA1271,6A2,1.5SMC110,KTA1270,6A4,1.5SMC10A,6A6,P6SMB180,1.5SMC10C,6A8,HZ30,1N5337B,HZ33,SMBJ14A,P6SMB18A,SMAJ13CA,P4SMA56CA,P6SMB18C,HZ36,1.5SMC100,SMB2EZ100,SMBJ130A,1.5SMC130CA,MPSA13,9452,P6SMB170,MPSA14,BAS70M9,P4KE62A,KBP3005,1N5336B,KTA1266,9451,HZ22,HZ20,HZ27,P6KE180A,SMBJ15A,HZ24,P6KE180C,SMAJ170CA,RB551V-30,RB152,RB153,SMB2EZ110,RB151,P4SMA440C,BAT42M9,P6KE75,MMBTA55,P4SMA440A,MPSA06,BZX584C2V4,MPSA05,P4SMA9.1,SMBJ9.0A,SS110,SMBJ5915B,2SD2137,1N5339B,SMBJ12A,15SQ060,SMAJ6.0A,P6KE62CA,SR260,P6KE68,SMBJ350A,MMBTA56,BAV16W,1.5SMC91A,MMBTA43,MMBTA44,1.5SMC91C,MMBTA42,P6KE82,SMBJ5916B,SMCJ300CA,5N60,SMCJ7.0A,1N5338B,15SQ050,2SB1116A,SMBJ13A,1.5KE62CA,SR250,P6SMB43CA,SMCJ170CA,BZX584C2V7,P6KE75A,P6KE75C,SMAJ33A,SMCJ54CA,P4SMA220A,MBR3040CT,P4SMA220C,M28S,1.5SMC22CA,SMBJ5917B,P6KE91

选型指南 - 鲁晶 - 2023/2/28 PDF 英文下载

鲁晶半导体亮相慕尼黑上海电子展，助力半导体功率器件国产替代

7月8日-10日，2024年慕尼黑上海电子展在上海新国际博览中心盛大举行。在这场全球电子行业盛会上，鲁晶半导体带来了一系列围绕工业电源、电动工具、智能家电、汽车电子、消费电子、新能源和工业设备以及其他重点领域的功率器件(Si/SiC)产品和技术。

原厂动态发布时间 : 2024-07-19

鲁晶肖特基二极管选型表

鲁晶半导体提供肖特基二极管选型：反向漏电流覆盖0.001mA-30mA等多个电流平台，反向浪涌电压可达1.75V，提供SMA（F）、SOD-123FL等多种封装

产品型号	品类	PD(mW)	I(AV)(mA)	VRRM (I=IRM)(A)	VFM(V)	IRM(μA)	Case Style
1SS344	肖特基二极管	200	500	20	0.55	100	SOT-23

选型表 - 鲁晶立即选型

SS52~SS520 SMC PLASTIC SILICON RECTIFIERS

型号- SS515,SS58,SS56,SS54,SS52,SS520,SS510,SS512

数据手册 - 鲁晶 - Rev. 1.2 - Oct-23 PDF 英文下载查看更多版本

SR120~SR1200 DO-41 PLASTIC SILICON RECTIFIERS

型号- SR1100,SR1150,SR120,SR130,SR140,SR150,SR160,SR1200,SR180

数据手册 - 鲁晶 - Rev. 1.2 - Oct-23 PDF 英文下载查看更多版本

肖特基二极管的原理是什么？

肖特基二极管是以其发明人肖特基博士（Schottky）命名的，又称肖特基势垒二极管，SBD是肖特基势垒二极管的简称。那么肖特基二极管的原理是什么呢？本文中鲁晶就来带大家了解一下。

技术探讨发布时间 : 2024-04-26

如何正确的使用肖特基二极管？

提到低功耗、大电流、超高速半导体器件，熟悉电子元器件的肯定能首先想到肖特基二极管（SBD）。但是你真的会用肖特基二极管吗？和其他的二极管比起来，肖特基二极管又有什么特别之处呢？下面一起来划重点吧。肖特基二极管广泛应用于开关电源、变频器、驱动器等电路中。在不同的应用中，需要考虑不同的因素，而且，不同的器件在性能上也有差别，因此，在选用肖特基二极管时，下面这些关键参数需要综合考虑。

设计经验发布时间 : 2024-05-08

Diode Classification

The basic principle is to block the reverse voltage with the already formed Schottky on the contact surface of the metal (for example, lead) and the semiconductor (N-type silicon wafer). There is a fundamental difference between the Schottky and PN junction rectification principles. Its pressure resistance is only about 40V. Its speciality is: the switching speed is very fast: the reverse recovery time trr is particularly short. Therefore, a switching diode and a low-voltage high-current rectifier diode can be fabricated.

技术探讨发布时间 : 2024-06-09