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. 165-2790
Mfr. Part No.VS-111RKI120PBF
BrandVishay
SGD62.324
Each (In a Bag of 25)
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. 395-2730
Mfr. Part No.VS-16RIA40
BrandVishay
SGD20.43
Each
units
16A SCR TO-48 400V 360A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 170-2393
Mfr. Part No.FS0809MH TU
SGD0.687
Each (In a Tube of 50)
units
8A SCR TO-220AB 600V 70 A @ 50 Hz, 73 A @ 60 Hz Through Hole 15mA 1.3V 40mA 3 10.36mm 4.67mm 15.35mm 10.36 x 4.67 x 15.35mm
RS Stock No. 262-488
Mfr. Part No.BT152-600R
SGD1.67
Each
units
13A SCR TO-220AB 650V 220A Through Hole 32mA 1.5V 60mA 3 10.3mm 4.7mm 9.4mm 10.3 x 4.7 x 9.4mm
RS Stock No. 170-2395
Mfr. Part No.FS1614MH TU
SGD0.88
Each (In a Tube of 50)
units
16A SCR TO-220AB 600V 190 A @ 50 Hz, 200 A @ 60 Hz Through Hole 40mA 1.3V 50mA 3 10.36mm 4.67mm 15.35mm 10.36 x 4.67 x 15.35mm
RS Stock No. 839-1379
Mfr. Part No.T560N12TOFXPSA1
BrandInfineon
SGD162.79
Each
units
559A PCT BG-T4814K0-1 1200V 7100A Stud 200mA 2V 300mA 5 - - 14.5mm 48 (Dia.) x 14.5 (Height)mm
RS Stock No. 357-4330
Mfr. Part No.VS-80RIA120PBF
BrandVishay
SGD64.54
Each
units
80A PCT TO-94 1200V 1990A Thread Mount 120mA 2.5V 200mA 3 29.5mm 27mm 188mm 29.5 x 27 x 188mm
RS Stock No. 103-7543
Mfr. Part No.BT151-800R
SGD0.912
Each (In a Tube of 50)
units
7.5A SCR TO-220AB 800V 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. 165-2604
Mfr. Part No.VS-T90RIA100
BrandVishay
SGD54.43
Each (In a Box of 10)
units
90A SCR D 55 1000V 1870A Panel Mount 120mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
RS Stock No. 774-3460
Mfr. Part No.C106MG
BrandLittelfuse
SGD0.728
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. 877-3147
Mfr. Part No.X0202MA 2BL2
SGD0.972
Each (In a Pack of 20)
units
0.8A SCR TO-92 600V 25A Through Hole 200µA 0.8V 5mA 3 4.7mm 3.7mm 4.4mm 4.7 x 3.7 x 4.4mm
RS Stock No. 177-7508
Mfr. Part No.VS-10TTS08S-M3
BrandVishay
SGD2.257
Each (On a Reel of 1000)
units
6.5A SCR D2PAK (TO-263) 800V 140A Surface Mount 15mA 1V 30mA 3 10.67mm 9.65mm 4.83mm 10.67 x 9.65 x 4.83mm
RS Stock No. 878-1811
Mfr. Part No.SK025L
BrandLittelfuse
SGD3.884
Each (In a Pack of 10)
units
25A SCR TO-220 1000V 300A Through Hole 35mA 1.5V 50mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS Stock No. 145-2613
Mfr. Part No.VS-ST700C18L1
BrandVishay
SGD223.50
Each (In a Box of 3)
units
910A PCT TO-200AC 1800V 16400A Screw Mount 200mA 3V 600mA 2 58.5mm 58.5mm 27mm 58.5 x 58.5 x 27mm
RS Stock No. 878-1842
Mfr. Part No.SK055R
BrandLittelfuse
SGD3.886
Each (In a Pack of 500)
units
55A SCR TO-220 1000V 650A Through Hole 40mA 1.5V 60mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS Stock No. 708-4244
Mfr. Part No.VS-16TTS12S-M3
BrandVishay
SGD3.33
Each
units
10A SCR D2PAK (TO-263) 1200V 200A Surface Mount 60mA 2V 100mA 3 10.67mm 9.65mm 4.83mm 10.67 x 9.65 x 4.83mm
RS Stock No. 760-9275
Mfr. Part No.DCR950D14
BrandDynex
SGD168.95
Each
units
950A SCR Type G 1400V 12800A Stud 300mA 3V 200mA 3 - - 14.5mm 47 (Dia.) x 14.5mm
RS Stock No. 177-5215
Mfr. Part No.MCR72-6G
BrandLittelfuse
SGD1.02
Each (In a Box of 500)
units
8A SCR TO-220AB 400V 100A Through Hole 200mA 1.5V 6mA 3 10.53mm 4.83mm 15.75mm 10.53 x 4.83 x 15.75mm
RS Stock No. 878-1855
Mfr. Part No.S6010LS2
BrandLittelfuse
SGD2.55
Each (In a Pack of 10)
units
10A SCR TO-220 600V 100A Through Hole 200µA 0.8V 6mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS Stock No. 168-4784
Mfr. Part No.N0795YN180
BrandIXYS
SGD190.893
Each (In a Box of 24)
units
795A PCT - 1000 → 1800V 10500A Screw Mount 150mA 2.50V 300mA - - - 14mm 42 (Dia.) x 14mm
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