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

...
Read more Read less

Filter

Visar 1 - 20 av 783 produkter
Resultat per sida
Beskrivning Pris 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-artikelnummer 168-4451
Tillv. art.nrVHF28-16IO5
VarumärkeIXYS
204,77 kr
Each (In a Box of 10)
Enheter
32A SCR Module FO F A 1600V - 0.33kA Panel Mount - 65mA - - 1V - 100mA
RS-artikelnummer 193-206
Tillv. art.nrVHF28-16IO5
VarumärkeIXYS
222,02 kr
Each
Enheter
32A SCR Module FO F A 1600V - 0.33kA Panel Mount - 65mA - - 1V - 100mA
RS-artikelnummer 658-148
Tillv. art.nrSKPC200-240
VarumärkeSemikron
4 561,42 kr
Each
Enheter
- - - - - - Screw Mount - - - - - - -
RS-artikelnummer 169-5920
Tillv. art.nr50RIA40
VarumärkeVishay
108,191 kr
Each (In a Bag of 100)
Enheter
50A SCR TO-65 400V - 1490A Thread Mount - 100mA - - 2.5V - 200mA
RS-artikelnummer 395-3496
Tillv. art.nrVS-50RIA40
VarumärkeVishay
157,19 kr
Each
Enheter
50A SCR TO-65 400V - 1490A Thread Mount - 100mA - - 2.5V - 200mA
RS-artikelnummer 462-142
Tillv. art.nrMCD200-16IO1
VarumärkeIXYS
597,08 kr
Each
Enheter
216A SCR Module Y4 M6 1600V - 8.6kA Panel Mount - 150mA - - 2V - 150mA
RS-artikelnummer 379-6518
Tillv. art.nrPAC-2
VarumärkeUnited Automation
757,36 kr
Each
Enheter
- - - - - - Screw Mount - - 3500Vrms 250V ac - - -
RS-artikelnummer 214-3979
Tillv. art.nrZVS-16DV
VarumärkeUnited Automation
702,76 kr
Each
Enheter
- - - - 16A - Screw Mount 3.7kW - - - - - -
RS-artikelnummer 168-4524
Tillv. art.nrMCD200-16IO1
VarumärkeIXYS
589,56 kr
Each (In a Box of 6)
Enheter
216A SCR Module Y4 M6 1600V - 8.6kA Panel Mount - 150mA - - 2V - 150mA
RS-artikelnummer 841-924
Tillv. art.nrPSR-25
VarumärkeUnited Automation
456,31 kr
Each
Enheter
- - - - 25A - Panel Mount 6kW - - - - - -
RS-artikelnummer 166-0476
Tillv. art.nrBT148W-600R,115
1,086 kr
Each (On a Reel of 1000)
Enheter
0.6A SCR SOT-223 (SC-73) 600V - 11A Surface Mount - 0.2mA - - 1.5V - 6mA
RS-artikelnummer 103-7543
Tillv. art.nrBT151-800R,127
5,567 kr
Each (In a Tube of 50)
Enheter
7.5A SCR TO-220AB 800V - 132A Through Hole - 15mA - - 1.5V - 20mA
RS-artikelnummer 760-9288
Tillv. art.nrDCR370T18
VarumärkeDynex
806,52 kr
Each
Enheter
370A SCR Type G 1800V - 5000A Stud - 300mA - - 3V - 200mA
RS-artikelnummer 145-9467
Tillv. art.nrX0403MF 1AA2
VarumärkeSTMicroelectronics
5,564 kr
Each (In a Bag of 250)
Enheter
4A SCR TO-202 600V - 33A Through Hole - - - - 0.8V - 5mA
RS-artikelnummer 296-3981
Tillv. art.nrSKPC200-440
VarumärkeSemikron
1 451,43 kr
Each
Enheter
- - - - - - Screw Mount - - - - - - -
RS-artikelnummer 878-1631
Tillv. art.nrS8035KTP
VarumärkeLittelfuse
31,474 kr
Each (In a Pack of 250)
Enheter
35A SCR TO-218AC 800V - 500A Through Hole - - - - 1.5V - 50mA
RS-artikelnummer 168-4489
Tillv. art.nrMCC312-16IO1
VarumärkeIXYS
1 264,467 kr
Each (In a Box of 3)
Enheter
320A SCR Module Y1 CU 1600V - 10.1kA Panel Mount - 150mA - - 2V - 150mA
RS-artikelnummer 484-5582
Tillv. art.nrBT148W-600R,115
1,164 kr
Each (In a Pack of 10)
Enheter
0.6A SCR SOT-223 (SC-73) 600V - 11A Surface Mount - 0.2mA - - 1.5V - 6mA
RS-artikelnummer 905-6128
Tillv. art.nrSKKT 92/16 E
VarumärkeSemikron
952,62 kr
Each
Enheter
100A - A 10 1600V - 2500A Panel Mount - - - - - - -
RS-artikelnummer 165-7641
Tillv. art.nrX0402MF 1AA2
VarumärkeSTMicroelectronics
5,384 kr
Each (In a Bag of 250)
Enheter
0.9A SCR TO-202 600V - 33A Through Hole - 0.2mA - - 0.8V - 5mA