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. 165-6236
Mfr. Part No.VS-50RIA100
BrandVishay
SGD22.826
Each (In a Bag of 100)
units
80A SCR TO-65 1000V 1490A Thread Mount 250mA 3.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
RS Stock No. 700-5554
Mfr. Part No.VS-110RKI120PBF
BrandVishay
SGD71.11
Each
units
110A PCT TO-94 1200V 2180A Thread Mount 120mA 2V 200mA 3 29.5mm 27mm 188mm 29.5 x 27 x 188mm
RS Stock No. 768-9017
Mfr. Part No.N0910LC200-U9900
BrandIXYS
SGD337.25
Each
units
910A PCT N0910 2000V 9200A Stud 300mA 3V 1000mA 2 - - 27mm 58.5 (Dia.) x 27mm
RS Stock No. 714-2643
Mfr. Part No.BTW69-800RG
SGD10.78
Each
units
32A SCR TOP3 800V 610A Through Hole 80mA 1.3V 150mA 3 15.5mm 4.6mm 12.85mm 15.5 x 4.6 x 12.85mm
RS Stock No. 877-2655
Mfr. Part No.BTW67-1000
SGD11.01
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. 165-9778
Mfr. Part No.BT151S-800R
SGD0.716
Each (On a Reel of 2500)
units
7.5A SCR DPAK (TO-252) 800V 132A Surface Mount 15mA 1.5V 20mA 3 6.73mm 6.22mm 2.38mm 6.73 x 6.22 x 2.38mm
RS Stock No. 905-6037
Mfr. Part No.SKT 24/12 E
BrandSemikron
SGD32.95
Each
units
22A SCR B 2 1200V 450A Thread Mount 100 (Min)mA 3 (Min)V 150mA 3 - - 41mm 14 (Dia.) x 41mm
RS Stock No. 197-804
BrandIXYS
SGD54.74
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. 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. 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. 165-2846
Mfr. Part No.VS-ST230S08P0VPBF
BrandVishay
SGD115.82
Each (In a Bag of 12)
units
230A SCR TO-93 800V 5970A Thread Mount 150mA 3V 600mA 3 35mm 30.33mm 49.5mm 35 x 30.33 x 49.5mm
RS Stock No. 484-5582
Mfr. Part No.BT148W-600R
SGD0.662
Each (In a Pack of 10)
units
0.6A SCR SOT-223 (SC-73) 600V 11A Surface Mount 0.2mA 1.5V 6mA 4 6.7mm 3.7mm 1.7mm 6.7 x 3.7 x 1.7mm
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. 145-1745
Mfr. Part No.VS-40TPS08-M3
BrandVishay
SGD10.891
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. 103-2940
Mfr. Part No.2N6509G
BrandLittelfuse
SGD2.293
Each (In a Box of 500)
units
16A SCR TO-220AB 800V 250A Through Hole 30mA 1.5V 40mA 3 10.28mm 4.82mm 9.28mm 10.28 x 4.82 x 9.28mm
RS Stock No. 829-0683
Mfr. Part No.BTW68-1200RG
SGD9.54
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
RS Stock No. 103-2980
Mfr. Part No.C106D1G
BrandLittelfuse
SGD0.448
Each (In a Box of 500)
units
2.55A SCR TO-225 400V 20A Through Hole 0.2mA 0.8V 3mA 3 7.74mm 2.66mm 11.04mm 7.74 x 2.66 x 11.04mm
RS Stock No. 177-5179
Mfr. Part No.2N6509TG
BrandLittelfuse
SGD1.783
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. 920-0791
Mfr. Part No.CS45-16IO1
BrandIXYS
SGD6.488
Each (In a Tube of 30)
units
48A SCR TO-247AD 1600V 560A Through Hole 100mA 1.5V 100mA 3 16.26mm - 21.46mm -
RS Stock No. 395-2392
Mfr. Part No.VS-10RIA120
BrandVishay
SGD29.89
Each
units
10A SCR TO-48 1200V 240A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
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