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. 761-4000
Mfr. Part No.CS45-12io1
BrandIXYS
SGD8.44
Each
units
48A SCR TO-247AD 1200V 560A Through Hole 200mA 1.6V 100mA 3 16.24mm 5.3mm 21.45mm 16.24 x 5.3 x 21.45mm
RS Stock No. 839-1357
Mfr. Part No.T390N16TOFXPSA1
BrandInfineon
SGD116.03
Each
units
381A PCT BG-T4214K0-1 1600V 4900A Stud 150mA 2V 200mA 5 - - 14.5mm 42 (Dia.) x 14.5 (Height)mm
RS Stock No. 165-2391
Mfr. Part No.VS-50RIA120
BrandVishay
SGD26.534
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. 509-566
Mfr. Part No.BT151-500R,127
SGD0.697
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. 166-0476
Mfr. Part No.BT148W-600R
SGD0.352
Each (On a Reel of 1000)
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. 486-5485
Mfr. Part No.P0111MN 5AA4
SGD1.448
Each (In a Pack of 5)
units
0.5A SCR SOT-223 600V 8A Surface Mount 0.025mA 0.8V 5mA 3+Tab 6.5mm 3.5mm 1.8mm 6.5 x 3.5 x 1.8mm
RS Stock No. 165-9778
Mfr. Part No.BT151S-800R
SGD0.74
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. 169-5898
Mfr. Part No.22RIA100
BrandVishay
SGD18.726
Each (In a Bag of 100)
units
22A SCR TO-48 1000V 420A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 165-6236
Mfr. Part No.VS-50RIA100
BrandVishay
SGD22.24
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. 920-0791
Mfr. Part No.CS45-16IO1
BrandIXYS
SGD6.365
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. 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. 167-314
Mfr. Part No.VS-40TPS08-M3
BrandVishay
SGD9.41
Each
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. 169-5890
Mfr. Part No.10RIA120
BrandVishay
SGD20.682
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. 145-9467
Mfr. Part No.X0403MF 1AA2
SGD1.061
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. 177-5179
Mfr. Part No.2N6509TG
BrandLittelfuse
SGD1.729
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. 714-2643
Mfr. Part No.BTW69-800RG
SGD10.60
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. 817-2459
Mfr. Part No.VS-50RIA100
BrandVishay
SGD30.67
Each
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. 227-9062
Mfr. Part No.VS-16RIA120
BrandVishay
SGD27.61
Each
units
16A SCR TO-48 1200V 360A 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. 877-2655
Mfr. Part No.BTW67-1000
SGD9.66
Each
units
32A SCR RD91 1000V 610A Panel Mount 80mA 1.3V 150mA 3 40mm 27mm 14mm 40 x 27 x 14mm
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