Thyristors

What is a Thyristor?
A Thyristor is a four layer semiconductor device, 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.
A Thyristor usually consists 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
The Thyristor is 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 Thyristor:
Silicon controlled rectifier (SCR) -The basic purpose of a 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 a 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.
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 it’s OFF.
Diac- Diac is a mix of the words diode and ac switch it is similar to four-layer diode but it can conduct in both directions meaning it can contact both AC and DC currents.
Thyristors are used in applications such as motor speed controls, pressure control systems, light dimmers and liquid level regulators
What are Phase controlled Thyristors?
Thyristors are frequently used as phase-controlled current valves for AC to DC conversion and vice versa, operating at low frequencies In the conducting state, thyristors feature very low losses, making them ideal devices to efficiently control very high currents and energies.

...
Read more Read less

Filters

Viewing 21 - 40 of 481 products
Results per page
Description Price Rated Average On-State Current Thyristor Type Package Type Repetitive Peak Reverse Voltage Surge Current Rating Mounting Type Maximum Gate Trigger Current Maximum Gate Trigger Voltage Maximum Holding Current Pin Count Length Width Height Dimensions
RS Stock No. 774-3451
Mfr. Part No.2N6404G
BrandLittelfuse
€0.505
Each (In a Pack of 2)
units
10A SCR TO-220AB 600V 160A Through Hole 60mA 2.5V 60mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 168-6672
Mfr. Part No.TN22-1500T
€0.321
Each (In a Tube of 50)
units
1.8A SCR TO-220AB 400V 22A Through Hole 1.5mA 3V 175mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS Stock No. 165-2391
Mfr. Part No.VS-50RIA120
BrandVishay
€15.62
Each (In a Bag of 100)
units
50A SCR TO-65 1200V 1490A Thread Mount 100mA 2.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
RS Stock No. 760-9294
Mfr. Part No.DCR960G18
BrandDynex
€134.34
Each
units
960A SCR Type G 1800V 14000A Stud 300mA 3V 200mA 3 - - 26.5mm 58 (Dia.) x 26.5mm
RS Stock No. 774-3460
Mfr. Part No.C106MG
BrandLittelfuse
€0.409
Each (In a Pack of 10)
units
2.55A SCR TO-225AA 600V 20A Through Hole 500µA 1V 6mA 3 7.74mm 2.66mm 11.04mm 7.74 x 2.66 x 11.04mm
RS Stock No. 687-1050
Mfr. Part No.TN22-1500T
€0.316
Each (In a Pack of 5)
units
1.8A SCR TO-220AB 400V 22A Through Hole 1.5mA 3V 175mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS Stock No. 168-9404
Mfr. Part No.BT151-500R,127
€0.41
Each (In a Tube of 50)
units
7.5A SCR TO-220AB 500V 132A Through Hole 15mA 1.5V 20mA 3 10.3mm 4.7mm 9.4mm 10.3 x 4.7 x 9.4mm
RS Stock No. 103-5140
Mfr. Part No.2N6404G
BrandLittelfuse
€0.468
Each (In a Box of 500)
units
10A SCR TO-220AB 600V 160A Through Hole 60mA 2.5V 60mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 146-1718
Mfr. Part No.DCR960G18
BrandDynex
€122.127
Each (In a Box of 7)
units
960A SCR Type G 1800V 14000A Stud 300mA 3V 200mA 3 - - 26.5mm 58 (Dia.) x 26.5mm
RS Stock No. 395-3474
Mfr. Part No.VS-50RIA120
BrandVishay
€19.78
Each
units
50A SCR TO-65 1200V 1490A Thread Mount 100mA 2.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
RS Stock No. 509-566
Mfr. Part No.BT151-500R,127
€0.451
Each (In a Pack of 10)
units
7.5A SCR TO-220AB 500V 132A Through Hole 15mA 1.5V 20mA 3 10.3mm 4.7mm 9.4mm 10.3 x 4.7 x 9.4mm
RS Stock No. 905-6074
Mfr. Part No.SKT 16/16 E
BrandSemikron
€18.50
Each
units
18A SCR A 46 1600V 2000A Thread Mount 150 (Min)mA 3 (Min)V 250mA 7 93mm 20mm 30mm 93 x 20 x 30mm
RS Stock No. 687-0993
Mfr. Part No.P0102DA 5AL3
€0.302
Each (In a Pack of 25)
units
0.5A SCR TO-92 400V 8A Through Hole 0.2mA 0.8V 5mA 3 4.7mm 3.7mm 4.4mm 4.7 x 3.7 x 4.4mm
RS Stock No. 177-5202
Mfr. Part No.C106MG
BrandLittelfuse
€0.27
Each (In a Box of 500)
units
2.55A SCR TO-225AA 600V 20A Through Hole 500µA 1V 6mA 3 7.74mm 2.66mm 11.04mm 7.74 x 2.66 x 11.04mm
RS Stock No. 165-7701
Mfr. Part No.P0102DA 5AL3
€0.119
Each (On a Reel of 2000)
units
0.5A SCR TO-92 400V 8A Through Hole 0.2mA 0.8V 5mA 3 4.7mm 3.7mm 4.4mm 4.7 x 3.7 x 4.4mm
RS Stock No. 919-4375
Mfr. Part No.VS-30TPS12-M3
BrandVishay
€4.668
Each (In a Tube of 25)
units
20A SCR TO-247AC 1200V 300A Through Hole 45mA 2V 100mA 3 15.87mm 5.31mm 20.7mm 15.87 x 5.31 x 20.7mm
RS Stock No. 145-1745
Mfr. Part No.VS-40TPS08-M3
BrandVishay
€3.493
Each (In a Tube of 25)
units
35A SCR TO-247AC 800V 600A Through Hole 150mA 2.5V 150mA 3 15.87mm 5.31mm 20.7mm 15.87 x 5.31 x 20.7mm
RS Stock No. 169-5920
Mfr. Part No.50RIA40
BrandVishay
€7.974
Each (In a Bag of 100)
units
50A SCR TO-65 400V 1490A Thread Mount 100mA 2.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
RS Stock No. 877-3068
Mfr. Part No.TS820-600B-TR
€0.863
Each (In a Pack of 20)
units
5A SCR DPAK (TO-252) 600V 73A Surface Mount 200µA 0.8V 5mA 3 6.73mm 6.22mm 2.4mm 6.73 x 6.22 x 2.4mm
RS Stock No. 165-6237
Mfr. Part No.VS-50RIA80
BrandVishay
€13.507
Each (In a Bag of 100)
units
80A SCR TO-65 800V 1490A Thread Mount 250mA 3.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
Related Products
TYPICAL APPLICATIONSGeneral purpose use in AC/DC bridge full ...
Description:
TYPICAL APPLICATIONSGeneral purpose use in AC/DC bridge full wave rectification for power supply, home appliances, office equipment, industrial automation applications. • UL recognition file number E54214• Universal 3-way terminals: snap-on, wire wrap-around, or PCB mounting• Typical IR less than ...
KBU4x, KBU6x and KBU8x series bridge rectifiers in ...
Description:
KBU4x, KBU6x and KBU8x series bridge rectifiers in SIL PCB Mounting package from Vishay Semiconductor. Soldering pins for Printed Circuit Board (PCB) through-hole mountingHigh surge current capabilityIsolating voltage 1500VrmsPackage centre hole for fixing.
PB series bridge rectifiers in Enhanced isoCink+T™ SIL ...
Description:
PB series bridge rectifiers in Enhanced isoCink+T™ SIL PCB Mounting package from Vishay Semiconductor. These general purpose AC/DC full wave bridge-rectifiers are suitable for linear and switching power supplies in home electrical appliance and white-goods applications. The rectifiers feature an ...
BU series bridge rectifiers in SIL PCB Mounting ...
Description:
BU series bridge rectifiers in SIL PCB Mounting package from Vishay Semiconductor. These general purpose AC/DC full wave bridge-rectifiers are suitable for linear and switching power supplies in home electrical appliance and white-goods applications. The rectifiers feature an enhanced isoCink+™ ...