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. 876-8509
Mfr. Part No.S6008LS3
BrandLittelfuse
SGD2.909
Each (In a Pack of 10)
units
8A SCR TO-220 600V 100A Through Hole 500µA 0.8V 8mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS Stock No. 878-1788
Mfr. Part No.L6004D5TP
BrandLittelfuse
SGD1.32
Each (In a Pack of 750)
units
4A - DPAK (TO-252) 600V 40A Surface Mount 5mA 1.3V 10mA 3 6.73mm 6.22mm 2.41mm 6.73 x 6.22 x 2.41mm
RS Stock No. 357-3999
Mfr. Part No.VS-30TPS08-M3
BrandVishay
SGD4.15
Each
units
20A SCR TO-247 800V 300A Through Hole 60mA 2.5V 100mA 3 15.87mm 5.31mm 20.7mm 15.87 x 5.31 x 20.7mm
RS Stock No. 165-7701
Mfr. Part No.P0102DA 5AL3
SGD0.209
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. 395-9315
Mfr. Part No.VS-ST330S16P1PBF
BrandVishay
SGD283.42
Each
units
330A SCR TO-118 1600V 9420A Stud 200mA 3V 600mA 3 49mm 42.5mm 74.5mm 49 x 42.5 x 74.5mm
RS Stock No. 194-366
Mfr. Part No.CS20-16IO1
BrandIXYS
SGD8.06
Each
units
19A SCR TO-247AD 1600V 215A Through Hole 65mA 1V 100mA 3 16.26mm - 21.46mm -
RS Stock No. 168-6651
Mfr. Part No.P0102BL 5AA4
SGD0.408
Each (On a Reel of 3000)
units
0.16A SCR SOT-23 200V 7A Surface Mount 0.2mA 0.8V 6mA 3 2.9mm 1.3mm 0.95mm 2.9 x 1.3 x 0.95mm
RS Stock No. 170-2392
Mfr. Part No.FS0404MH TU
SGD0.55
Each (In a Tube of 50)
units
4A SCR TO-220AB 600V 30 A @ 50 Hz, 33 A @ 60 Hz Through Hole 50µA 0.8V 5mA 3 10.36mm 4.67mm 15.35mm 10.36 x 4.67 x 15.35mm
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. 687-1000
Mfr. Part No.TYN1225RG
SGD4.42
Each
units
16A SCR TO-220AB 1200V 260A Through Hole 40mA 1.5V 50mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS Stock No. 169-5873
Mfr. Part No.VS-16TTS12PBF
BrandVishay
SGD4.073
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 168-6662
Mfr. Part No.TYN1225RG
SGD3.75
Each (In a Tube of 50)
units
16A SCR TO-220AB 1200V 260A Through Hole 40mA 1.5V 50mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS Stock No. 169-5894
Mfr. Part No.16RIA100
BrandVishay
SGD21.13
Each (In a Bag of 100)
units
16A SCR TO-48 1000V 360A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 168-6673
Mfr. Part No.TYN610RG
SGD1.85
Each (In a Tube of 50)
units
6.4A SCR TO-220AB 600V 105A Through Hole 15mA 1.5V 30mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS Stock No. 395-9242
Mfr. Part No.VS-ST110S16P1PBF
BrandVishay
SGD121.48
Each
units
110A PCT TO-94 1600V 2830A Thread Mount 150mA 3V 600mA 3 29.5mm - 50mm -
RS Stock No. 165-5286
Mfr. Part No.TS110-8UF
SGD0.449
Each (On a Reel of 5000)
units
0.8A SCR SMB 800V 21A Surface Mount 100µA 0.8V 12mA 3 4.6mm 3.95mm 1.1mm 4.6 x 3.95 x 1.1mm
RS Stock No. 178-7030
Mfr. Part No.S4065JTP
BrandLittelfuse
SGD7.05
Each (In a Tube of 250)
units
65A SCR TO-218X 400V 950A Through Hole 50mA 2V 80mA 3 16mm 4.78mm 21.21mm 16 x 4.78 x 21.21mm
RS Stock No. 168-4566
Mfr. Part No.CS60-16IO1
BrandIXYS
SGD11.98
Each (In a Tube of 30)
units
60A SCR PLUS247 1600V 1.51kA Through Hole 200mA 1.6V 200mA 3 16.13mm 5.21mm 21.34mm 16.13 x 5.21 x 21.34mm
RS Stock No. 227-9208
Mfr. Part No.VS-ST230C12C0
BrandVishay
SGD77.43
Each
units
410A PCT TO-200AB 1200V 5970A Screw Mount 150mA 3V 600mA 3 42mm 42mm 14.4mm 42 x 42 x 14.4mm
RS Stock No. 125-8053
Mfr. Part No.MCO150-16io1
BrandIXYS
SGD32.82
Each
units
158A - SOT-227B 1600V 2.16kA Screw 200mA 1.6V 200mA 4 38.23mm 25.25mm 12.22mm 38.23 x 25.25 x 12.22mm
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