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 its 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.

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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. 920-0798
Mfr. Part No.CS35-12IO4
BrandIXYS
SGD53.101
Each (In a Tube of 10)
units
69A SCR TO-208AC 1200V 1340A Thread Mount 100mA 1.5V 80mA 2 19.62mm 17mm 41.3mm 19.62 x 17 x 41.3mm
RS Stock No. 145-9590
Mfr. Part No.X0405MF 1AA2
SGD0.885
Each (In a Bag of 250)
units
0.9A SCR TO-202 600V 33A Through Hole 0.05mA 0.8V 5mA 3 10.1mm 4.5mm 7.3mm 10.1 x 4.5 x 7.3mm
RS Stock No. 197-804
BrandIXYS
SGD61.40
Each
units
69A SCR TO-208AC 1200V 1340A Thread Mount 100mA 1.5V 80mA 2 19.62mm 17mm 41.3mm 19.62 x 17 x 41.3mm
RS Stock No. 169-5834
Mfr. Part No.16RIA120
BrandVishay
SGD22.56
Each (In a Bag of 100)
units
16A SCR TO-48 1200V 360A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 687-1022
Mfr. Part No.X0405MF 1AA2
SGD1.15
Each (In a Pack of 10)
units
0.9A SCR TO-202 600V 33A Through Hole 0.05mA 0.8V 5mA 3 10.1mm 4.5mm 7.3mm 10.1 x 4.5 x 7.3mm
RS Stock No. 800-9200
Mfr. Part No.2N6509TG
BrandLittelfuse
SGD1.79
Each (In a Pack of 10)
units
- SCR TO-220 800V 250A Through Hole 75mA 1.5V 80mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 145-9467
Mfr. Part No.X0403MF 1AA2
SGD1.06
Each (In a Bag of 250)
units
4A SCR TO-202 600V 33A Through Hole - 0.8V 5mA 3 10.1mm 4.5mm 7.3mm 10.1 x 4.5 x 7.3mm
RS Stock No. 395-2881
Mfr. Part No.VS-25RIA80
BrandVishay
SGD18.49
Each
units
25A SCR TO-48 800V 440A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 395-2392
Mfr. Part No.VS-10RIA120
BrandVishay
SGD30.50
Each
units
10A SCR TO-48 1200V 240A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 768-9026
Mfr. Part No.N1718NC180
BrandIXYS
SGD410.54
Each
units
1718A PCT N1718 2000V 27200A Stud 300mA 3V 1000mA 2 - - 27.7mm 74 (Dia.) x 27.7mm
RS Stock No. 169-5902
Mfr. Part No.25RIA80
BrandVishay
SGD8.956
Each (In a Bag of 100)
units
25A SCR TO-48 800V 440A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 123-1464
Mfr. Part No.FS2510MH TU
SGD1.069
Each (In a Pack of 10)
units
25A SCR TO-220AB 600V 300 A @ 50 Hz, 330 A @ 60 Hz Through Hole 25mA 1.3V 40mA 3 10.36mm 4.67mm 15.35mm 10.36 x 4.67 x 15.35mm
RS Stock No. 395-9309
Mfr. Part No.VS-ST330S12P1PBF
BrandVishay
SGD274.85
Each
units
330A SCR TO-118 1200V 9420A Stud 200mA 3V 600mA 3 49mm 42.5mm 74.5mm 49 x 42.5 x 74.5mm
RS Stock No. 169-5890
Mfr. Part No.10RIA120
BrandVishay
SGD21.46
Each (In a Bag of 100)
units
10A SCR TO-48 1200V 240A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 877-2655
Mfr. Part No.BTW67-1000
SGD11.45
Each
units
32A SCR RD91 1000V 610A Panel Mount 80mA 1.3V 150mA 3 40mm 27mm 14mm 40 x 27 x 14mm
RS Stock No. 768-9017
Mfr. Part No.N0910LC200-U9900
BrandIXYS
SGD348.36
Each
units
910A PCT N0910 2000V 9200A Stud 300mA 3V 1000mA 2 - - 27mm 58.5 (Dia.) x 27mm
RS Stock No. 509-566
Mfr. Part No.BT151-500R,127
SGD0.701
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. 145-8883
Mfr. Part No.BTW67-1000
SGD9.69
Each (In a Bag of 50)
units
32A SCR RD91 1000V 610A Panel Mount 80mA 1.3V 150mA 3 40mm 27mm 14mm 40 x 27 x 14mm
RS Stock No. 177-5179
Mfr. Part No.2N6509TG
BrandLittelfuse
SGD1.79
Each (In a Tube of 50)
units
- SCR TO-220 800V 250A Through Hole 75mA 1.5V 80mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 829-0683
Mfr. Part No.BTW68-1200RG
SGD9.61
Each
units
19A SCR TOP3 1200V 420A Through Hole 50mA 1.5V 75mA 3 15.5mm 4.6mm 21.1mm 15.5 x 4.6 x 21.1mm
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