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. 165-2391
Mfr. Part No.VS-50RIA120
BrandVishay
kr 153,301
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. 918-9806
Mfr. Part No.VS-16TTS12S-M3
BrandVishay
kr 15,731
Each (In a Tube of 50)
Units
10A SCR D2PAK (TO-263) 1200V 200A Surface Mount 90mA 3V 150mA 3 10.67mm 9.65mm 4.83mm 10.67 x 9.65 x 4.83mm
RS Stock No. 395-3474
Mfr. Part No.VS-50RIA120
BrandVishay
kr 197,21
Each
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. 708-4244
Mfr. Part No.VS-16TTS12S-M3
BrandVishay
kr 19,24
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. 395-2875
Mfr. Part No.VS-25RIA60
BrandVishay
kr 128,11
Each
Units
25A SCR TO-48 600V 440A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 395-2881
Mfr. Part No.VS-25RIA80
BrandVishay
kr 157,92
Each
Units
25A SCR TO-48 800V 440A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 357-3438
Mfr. Part No.VS-ST083S08PFM1P
BrandVishay
kr 865,10
Each
Units
85A SCR TO-94 800V 2560A Thread Mount 200mA 3V 600mA 3 - - 191mm 29.5 (Dia.) x 191mm
RS Stock No. 169-5955
Mfr. Part No.T50RIA60
BrandVishay
kr 252,67
Each (In a Box of 10)
Units
50A SCR D 55 600V 1370A Panel Mount 100mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
RS Stock No. 169-5873
Mfr. Part No.VS-16TTS12PBF
BrandVishay
kr 25,013
Each (In a Tube of 50)
Units
- - - - - - - - - - - - - -
RS Stock No. 395-9157
Mfr. Part No.VS-T50RIA60
BrandVishay
kr 277,07
Each
Units
50A SCR D 55 600V 1370A Panel Mount 100mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
RS Stock No. 167-314
Mfr. Part No.VS-40TPS08-M3
BrandVishay
kr 72,97
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. 169-5896
Mfr. Part No.16RIA40
BrandVishay
kr 28,32
Each (In a Bag of 100)
Units
16A SCR TO-48 400V 360A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 169-5899
Mfr. Part No.22RIA40
BrandVishay
kr 28,875
Each (In a Bag of 100)
Units
22A SCR TO-48 400V 420A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 379-8025
Mfr. Part No.VS-T90RIA100
BrandVishay
kr 365,60
Each
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. 227-9191
Mfr. Part No.VS-ST180C16C0
BrandVishay
kr 690,02
Each
Units
350A PCT TO-200AB 1600V 5230A Screw Mount 150mA 3V 600mA 3 42mm 42mm 14.4mm 42 x 42 x 14.4mm
RS Stock No. 700-5585
Mfr. Part No.VS-25RIA120S90
BrandVishay
kr 124,32
Each
Units
25A SCR TO-48 1200V 440A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 145-1745
Mfr. Part No.VS-40TPS08-M3
BrandVishay
kr 34,823
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. 708-4370
Mfr. Part No.VS-25TTS12S-M3
BrandVishay
kr 18,84
Each
Units
16A SCR D2PAK (TO-263) 1200V 350A Surface Mount 45mA 2V 100mA 3 10.67mm 9.65mm 4.83mm 10.67 x 9.65 x 4.83mm
RS Stock No. 700-5639
Mfr. Part No.VS-ST380CH06C1
BrandVishay
kr 1 448,04
Each
Units
960A PCT TO-200AB 600V 13000A Screw Mount 200mA 3V 600mA 3 42mm 42mm 15.1mm 42 x 42 x 15.1mm
RS Stock No. 165-2437
Mfr. Part No.VS-ST083S08PFM1P
BrandVishay
kr 689,513
Each (In a Bag of 25)
Units
85A SCR TO-94 800V 2560A Thread Mount 200mA 3V 600mA 3 - - 191mm 29.5 (Dia.) x 191mm