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. 817-2406
Mfr. Part No.VS-25RIA80
BrandVishay
€11.39
Each
units
25A SCR TO-208AA 800V 440A Thread Mount 90mA 3V 130mA 2 - 14.3mm 41.7mm 15.5 x 14.3 x 41.7mm
RS Stock No. 167-465
Mfr. Part No.VS-10TTS08S-M3
BrandVishay
€1.546
Each (In a Pack of 5)
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. 395-9242
Mfr. Part No.VS-ST110S16P1PBF
BrandVishay
€72.37
Each
units
110A PCT TO-94 1600V 2830A Thread Mount 150mA 3V 600mA 3 29.5mm - 50mm -
RS Stock No. 876-5755
Mfr. Part No.TS110-8UF
€0.501
Each (In a Pack of 20)
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. 103-7541
Mfr. Part No.BT145-800R,127
€1.21
Each (In a Tube of 50)
units
16A SCR TO-220AB 800V 330A Through Hole 35mA 1V 60mA 3 10.3mm 4.7mm 9.4mm 10.3 x 4.7 x 9.4mm
RS Stock No. 165-5286
Mfr. Part No.TS110-8UF
€0.219
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. 171-9508
Mfr. Part No.S6025LTP
BrandLittelfuse
€1.32
Each (In a Tube of 500)
units
25A SCR TO-220AB - 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. 168-4651
Mfr. Part No.CS45-08IO1
BrandIXYS
€3.391
Each (In a Tube of 30)
units
48A SCR TO-247AD 800V 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. 170-8382
Mfr. Part No.VS-10TTS08STRLPBF
BrandVishay
€0.842
Each (On a Reel of 800)
units
- - - - - - - - - - - - - -
RS Stock No. 839-1363
Mfr. Part No.T430N12TOFXPSA1
BrandInfineon
€90.17
Each
units
433A PCT BG-T4214K0-1 1200V 5200A Stud 200mA 2V 300mA 5 - - 14.5mm 42 (Dia.) x 14.5 (Height)mm
RS Stock No. 825-2631
Mfr. Part No.N0795YN180
BrandIXYS
€110.92
Each
units
795A PCT - 1000 → 1800V 10500A Screw Mount 150mA 2.50V 300mA - - - 14mm 42 (Dia.) x 14mm
RS Stock No. 170-2394
Mfr. Part No.FS1209NH TU
€0.425
Each (In a Tube of 50)
units
12A SCR TO-220AB 800V 140 A @ 50 Hz, 145 A @ 60 Hz Through Hole 15mA 1.3V 30mA 3 10.36mm 4.67mm 15.35mm 10.36 x 4.67 x 15.35mm
RS Stock No. 700-5594
Mfr. Part No.VS-70TPS16PBF
BrandVishay
€7.92
Each
units
70A SCR Super-247 1600V 1400A Through Hole 100mA 1.5V 200mA 3 16.1mm - 20.8mm -
RS Stock No. 170-2396
Mfr. Part No.FS2510MH TU
€0.37
Each (In a Tube of 50)
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. 163-7338
Mfr. Part No.TN4015H-6T
€0.515
Each (In a Tube of 50)
units
25A SCR TO-220AB 600V 394A Through Hole 15mA 1.3V 60mA 3 10.4mm 4.6mm 15.9mm 10.4 x 4.6 x 15.9mm
RS Stock No. 760-9279
Mfr. Part No.DCR1010G14
BrandDynex
€118.03
Each
units
1010A SCR Type G 1400V 15000A Stud 300mA 3V 200mA 3 - - 26.5mm 58 (Dia.) x 26.5mm
RS Stock No. 395-9286
Mfr. Part No.VS-ST230S12P1VPBF
BrandVishay
€98.57
Each
units
230A SCR TO-93 1200V 5970A Thread Mount 150mA 3V 600mA 3 35mm 30.33mm 49.5mm 35 x 30.33 x 49.5mm
RS Stock No. 192-4599
Mfr. Part No.TN4015H-6G
€1.183
Each (In a Tube of 50)
units
25A SCR D2PAK 600V 394A Surface Mount 15mA 1.3V 60mA 3 10.28mm 9.35mm 4.6mm 10.28 x 9.35 x 4.6mm
RS Stock No. 395-2730
Mfr. Part No.VS-16RIA40
BrandVishay
€3.11
Each
units
16A SCR TO-48 400V 360A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 379-8025
Mfr. Part No.VS-T90RIA100
BrandVishay
€36.74
Each
units
90A SCR D 55 1000V 1870A Panel Mount 120mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
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