Thyristors

Thyristors are four-layer semiconductor devices, also known as a silicon controlled rectifier (SCR) It is like a fast static switch and is good for controlling large amounts of power, they can also control the speed of DC motors.

How do thyristors work?

Thyristors usually consist of three electrodes: an anode (positive terminal), Cathode (negative terminal) and a gate. (You can also get thyristors with two or four leads). The gate is the main control terminal while the main current flows between the anode and cathode Thyristors are made of N-type and P-type materials. The N-type material is formed by doping an element with electrons to increase the number of negative charge-carrying electrons. The P-type material is also produced through doping, although the resulting charge-carrying electrons are positively charged. By alternating layers of P and N-type material, a semiconductor thyristor device is formed. Thyristors are used to create a latching circuit. Thyristors can be turned on using the gate. It then turns off when the voltage across the anode-cathode drops back down to zero.

Types of thyristors

  • Silicon controlled rectifier (SCR) - The basic purpose of an SCR is to function as a switch that can turn on or off small or large amounts of power.
  • Silicon controlled switch (SCS) - Silicon Controlled Switch (SCS) is a device similar to an SCR, but it is designed to turn off when a positive voltage/input current pulse is applied to an additional "Anode gate".
  • Triac - Triac gets its name from Triode for alternating current Triacs are similar to SCRs but it conducts in both directions, (a bidirectional device). This means that it can switch AC and DC currents., Firing circuit commander modules are required for this.
  • Four-layer diode - A four-layer diode has 2 pins and is similar to a voltage-sensitive switch. When the voltage between the two pins exceeds the breakdown voltage it turns ON, otherwise its OFF.
  • Diac - Diac is a mix of the words diode and ac switch it is similar to a four-layer diode but it can conduct in both directions meaning it can contact both AC and DC currents.

Applications of thyristors

Thyristors are commonly found in many everyday applications such as:

  • Motor speed controls
  • Pressure control systems
  • Light dimmers
  • Liquid level regulators

...
Lees meer Lees minder

Filters

1 - 20 van 177 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs Rated Average On-State Current Thyristor Type Package Type Repetitive Peak Reverse Voltage Current Rating Surge Current Rating Mounting Type Power Rating Maximum Gate Trigger Current Output Isolation Input Voltage AC Maximum Gate Trigger Voltage Input Voltage DC Maximum Holding Current
RS-stocknr. 167-320
FabrikantnummerVS-40TPS12-M3
FabrikantVishay
7,86 €
Each
Aantal stuks
35A SCR TO-247AC 1200V - 600A Through Hole - 150mA - - 2.5V - 150mA
RS-stocknr. 145-2566
FabrikantnummerVS-40TPS12-M3
FabrikantVishay
5,356 €
Each (In a Tube of 25)
Aantal stuks
35A SCR TO-247AC 1200V - 600A Through Hole - 150mA - - 2.5V - 150mA
RS-stocknr. 169-5961
FabrikantnummerST330S16P1PBF
FabrikantVishay
141,682 €
Each (In a Bag of 6)
Aantal stuks
330A SCR TO-118 1600V - 9420A Stud - 200mA - - 3V - 600mA
RS-stocknr. 395-9242
FabrikantnummerVS-ST110S16P1PBF
FabrikantVishay
72,37 €
Each
Aantal stuks
110A PCT TO-94 1600V - 2830A Thread Mount - 150mA - - 3V - 600mA
RS-stocknr. 169-5959
FabrikantnummerST110S16P1PBF
FabrikantVishay
64,392 €
Each (In a Bag of 25)
Aantal stuks
110A PCT TO-94 1600V - 2830A Thread Mount - 150mA - - 3V - 600mA
RS-stocknr. 395-9315
FabrikantnummerVS-ST330S16P1PBF
FabrikantVishay
172,78 €
Each
Aantal stuks
330A SCR TO-118 1600V - 9420A Stud - 200mA - - 3V - 600mA
RS-stocknr. 287-9684
FabrikantnummerVS-16TTS12-M3
FabrikantVishay
2,75 €
Each
Aantal stuks
10A SCR TO-220AC 1200V - 200A Through Hole - 60mA - - 2V - 100mA
RS-stocknr. 169-5873
FabrikantnummerVS-16TTS12PBF
FabrikantVishay
2,213 €
Each (In a Tube of 50)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 169-5900
FabrikantnummerVS-25RIA120M
FabrikantVishay
10,812 €
Each (In a Bag of 100)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 395-2869
FabrikantnummerVS-25RIA120M
FabrikantVishay
11,89 €
Each
Aantal stuks
25A SCR TO-48 1200V - 440A Thread Mount - 60mA - - 2V - 130mA
RS-stocknr. 395-9309
FabrikantnummerVS-ST330S12P1PBF
FabrikantVishay
170,13 €
Each
Aantal stuks
330A SCR TO-118 1200V - 9420A Stud - 200mA - - 3V - 600mA
RS-stocknr. 165-2440
FabrikantnummerVS-ST180S12P1VPBF
FabrikantVishay
68,459 €
Each (In a Bag of 12)
Aantal stuks
200A SCR TO-93 1200V - 5230A Thread Mount - 150mA - - 3V - 600mA
RS-stocknr. 165-2846
FabrikantnummerVS-ST230S08P0VPBF
FabrikantVishay
66,811 €
Each (In a Bag of 12)
Aantal stuks
230A SCR TO-93 800V - 5970A Thread Mount - 150mA - - 3V - 600mA
RS-stocknr. 919-4375
FabrikantnummerVS-30TPS12-M3
FabrikantVishay
3,262 €
Each (In a Tube of 25)
Aantal stuks
20A SCR TO-247AC 1200V - 300A Through Hole - 45mA - - 2V - 100mA
RS-stocknr. 919-4384
FabrikantnummerVS-30TPS16-M3
FabrikantVishay
2,239 €
Each (In a Tube of 25)
Aantal stuks
20A SCR TO-247AC 1600V - 300A Through Hole - 45mA - - 2V - 100mA
RS-stocknr. 169-5837
Fabrikantnummer22RIA120
FabrikantVishay
13,367 €
Each (In a Bag of 100)
Aantal stuks
22A SCR TO-48 1200V - 420A Thread Mount - 60mA - - 2V - 130mA
RS-stocknr. 169-5960
FabrikantnummerST330S12P1PBF
FabrikantVishay
141,775 €
Each (In a Bag of 6)
Aantal stuks
330A SCR TO-118 1200V - 9420A Stud - 200mA - - 3V - 600mA
RS-stocknr. 395-9286
FabrikantnummerVS-ST230S12P1VPBF
FabrikantVishay
96,07 €
Each
Aantal stuks
230A SCR TO-93 1200V - 5970A Thread Mount - 150mA - - 3V - 600mA
RS-stocknr. 300-414
FabrikantnummerVS-30TPS12-M3
FabrikantVishay
3,87 €
Each
Aantal stuks
20A SCR TO-247AC 1200V - 300A Through Hole - 45mA - - 2V - 100mA
RS-stocknr. 700-5636
FabrikantnummerVS-ST230S08P0VPBF
FabrikantVishay
70,45 €
Each
Aantal stuks
230A SCR TO-93 800V - 5970A Thread Mount - 150mA - - 3V - 600mA