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 used in applications such as;

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

...
Voir plus Voir moins

Filtres

Afficher 1 - 20 des 777 produits
Nombre de résultats par page
Description Prix 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
N° de stock RS 905-6128
Référence fabricantSKKT 92/16 E
MarqueSemikron
89,33 €
Each
Unité
100A - A 10 1600V - 2500A Panel Mount - - - - - - -
N° de stock RS 145-2566
Référence fabricantVS-40TPS12-M3
MarqueVishay
6,272 €
Each (In a Tube of 25)
Unité
35A SCR TO-247AC 1200V - 600A Through Hole - 150mA - - 2.5V - 150mA
N° de stock RS 167-320
Référence fabricantVS-40TPS12-M3
MarqueVishay
7,86 €
Each
Unité
35A SCR TO-247AC 1200V - 600A Through Hole - 150mA - - 2.5V - 150mA
N° de stock RS 103-8143
Référence fabricantBT152-600R,127
0,798 €
Each (In a Tube of 50)
Unité
13A SCR TO-220AB 650V - 220A Through Hole - 32mA - - 1.5V - 60mA
N° de stock RS 262-488
Référence fabricantBT152-600R,127
0,94 €
Each
Unité
13A SCR TO-220AB 650V - 220A Through Hole - 32mA - - 1.5V - 60mA
N° de stock RS 905-6083
Référence fabricantSKKT 27/16 E
MarqueSemikron
69,87 €
Each
Unité
25A SCR A 46 1600V - 550A Panel Mount - 150mA - - 3V - 200mA
N° de stock RS 905-6122
Référence fabricantSKKT 106/16 E
MarqueSemikron
46,88 €
Each
Unité
106A SCR A 46 1600V - 2250A Panel Mount - 150mA - - 3V - 250mA
N° de stock RS 169-5959
Référence fabricantST110S16P1PBF
MarqueVishay
64,392 €
Each (In a Bag of 25)
Unité
110A PCT TO-94 1600V - 2830A Thread Mount - 150mA - - 3V - 600mA
N° de stock RS 193-717
Référence fabricantMCC95-16IO1B
MarqueIXYS
29,46 €
Each
Unité
116A SCR Module TO-240AA 1600V - 2.4kA Panel Mount - 150mA - - 2.5V - 200mA
N° de stock RS 489-3575
Référence fabricantPR3-E-18KW
339,48 €
Each
Unité
- - - - 25A - Panel Mount 18kW - - - - - -
N° de stock RS 169-5961
Référence fabricantST330S16P1PBF
MarqueVishay
141,682 €
Each (In a Bag of 6)
Unité
330A SCR TO-118 1600V - 9420A Stud - 200mA - - 3V - 600mA
N° de stock RS 177-5352
Référence fabricantMCC95-16IO1B
MarqueIXYS
26,063 €
Each (In a Box of 36)
Unité
116A SCR Module TO-240AA 1600V - 2.4kA Panel Mount - 150mA - - 2.5V - 200mA
N° de stock RS 920-0791
Référence fabricantCS45-16IO1
MarqueIXYS
3,781 €
Each (In a Tube of 30)
Unité
48A SCR TO-247AD 1600V - 560A Through Hole - 100mA - - 1.5V - 100mA
N° de stock RS 468-2369
Référence fabricantSKKH 106/16 E
MarqueSemikron
194,64 €
Each
Unité
106A SCR Module SEMIPACK1 1600V - 2.25kA Panel Mount - 150mA - - 3V - 250mA
N° de stock RS 197-810
Référence fabricantCS45-16IO1
MarqueIXYS
4,45 €
Each
Unité
48A SCR TO-247AD 1600V - 560A Through Hole - 100mA - - 1.5V - 100mA
N° de stock RS 395-9242
Référence fabricantVS-ST110S16P1PBF
MarqueVishay
72,37 €
Each
Unité
110A PCT TO-94 1600V - 2830A Thread Mount - 150mA - - 3V - 600mA
N° de stock RS 905-6190
Référence fabricantSKKT 162/22 E H4
MarqueSemikron
253,59 €
Each
Unité
143A SCR SEMIPACK2 2200V - 5200A Panel Mount - 150mA - - 2V - 400mA
N° de stock RS 395-9315
Référence fabricantVS-ST330S16P1PBF
MarqueVishay
172,78 €
Each
Unité
330A SCR TO-118 1600V - 9420A Stud - 200mA - - 3V - 600mA
N° de stock RS 168-4451
Référence fabricantVHF28-16IO5
MarqueIXYS
19,474 €
Each (In a Box of 10)
Unité
32A SCR Module FO F A 1600V - 0.33kA Panel Mount - 65mA - - 1V - 100mA
N° de stock RS 919-6245
Référence fabricantPR3-E-6kW
240,09 €
Each
Unité
- - - - 8A - Panel Mount 6kW - - - - - -