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. 168-6673
Mfr. Part No.TYN610RG
R 19.88
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. 687-1053
Mfr. Part No.TYN610RG
R 23.806
Each (In a Pack of 5)
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. 700-5591
Mfr. Part No.VS-70TPS12PBF
BrandVishay
R 146.73
Each
units
70A SCR Super-247 1200V 1400A Through Hole 100mA 1.5V 200mA 3 16.1mm - 20.8mm -
RS stock no. 145-1769
Mfr. Part No.VS-70TPS12PBF
BrandVishay
R 116.891
Each (In a Tube of 25)
units
70A SCR Super-247 1200V 1400A Through Hole 100mA 1.5V 200mA 3 16.1mm - 20.8mm -
RS stock no. 165-5402
Mfr. Part No.TZ425N16KOFHPSA1
BrandInfineon
R 2,809.06
Each (In a Tray of 3)
units
425A PCT BG-PB501-1 1600V 14500A Panel Mount 250mA 1.5V 300mA 5 101mm 50mm 52mm 101 x 50 x 52mm
RS stock no. 839-1313
Mfr. Part No.TZ425N16KOFHPSA1
BrandInfineon
R 3,337.87
Each
units
425A PCT BG-PB501-1 1600V 14500A Panel Mount 250mA 1.5V 300mA 5 101mm 50mm 52mm 101 x 50 x 52mm
RS stock no. 194-366
Mfr. Part No.CS20-16IO1
BrandIXYS
R 78.52
Each
units
19A SCR TO-247AD 1600V 215A Through Hole 65mA 1V 100mA 3 16.26mm - 21.46mm -
RS stock no. 168-4495
Mfr. Part No.CS20-16IO1
BrandIXYS
R 72.624
Each (In a Tube of 30)
units
19A SCR TO-247AD 1600V 215A Through Hole 65mA 1V 100mA 3 16.26mm - 21.46mm -
RS stock no. 825-2631
Mfr. Part No.N0795YN180
BrandIXYS
R 2,353.20
Each
units
795A PCT - 1000 → 1800V 10500A Screw Mount 150mA 2.50V 300mA - - - 14mm 42 (Dia.) x 14mm
RS stock no. 168-4784
Mfr. Part No.N0795YN180
BrandIXYS
R 1,193.642
Each (In a Box of 24)
units
795A PCT - 1000 → 1800V 10500A Screw Mount 150mA 2.50V 300mA - - - 14mm 42 (Dia.) x 14mm
RS stock no. 168-8046
Mfr. Part No.TXN625RG
R 40.268
Each (In a Tube of 50)
units
16A SCR TO-220AB 600V 314A Through Hole 40mA 1.3V 50mA 3 10.4mm 4.6mm 15.9mm 10.4 x 4.6 x 15.9mm
RS stock no. 102-4088
Mfr. Part No.TS820-600T
R 20.944
Each (In a Tube of 50)
units
5A SCR TO-220AB 600V 73A Through Hole 0.2mA 0.8V 5mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS stock no. 355-2841
Mfr. Part No.TS820-600T
R 25.09
Each
units
5A SCR TO-220AB 600V 73A Through Hole 0.2mA 0.8V 5mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS stock no. 165-2391
Mfr. Part No.VS-50RIA120
BrandVishay
R 323.278
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. 829-0469
Mfr. Part No.TXN625RG
R 44.03
Each (In a Pack of 5)
units
16A SCR TO-220AB 600V 314A Through Hole 40mA 1.3V 50mA 3 10.4mm 4.6mm 15.9mm 10.4 x 4.6 x 15.9mm
RS stock no. 395-3474
Mfr. Part No.VS-50RIA120
BrandVishay
R 440.62
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. 509-566
Mfr. Part No.BT151-500R,127
R 9.449
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. 168-9404
Mfr. Part No.BT151-500R,127
R 8.292
Each (In a Tube of 50)
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. 166-1424
Mfr. Part No.BT169D
R 1.452
Each (In a Bag of 1000)
units
0.5A SCR SPT 400V 9A Through Hole 0.2mA 0.8V 5mA 3 4.8mm 4.2mm 5.2mm 4.8 x 4.2 x 5.2mm
RS stock no. 509-471
Mfr. Part No.BT169D
R 4.987
Each (In a Pack of 50)
units
0.5A SCR SPT 400V 9A Through Hole 0.2mA 0.8V 5mA 3 4.8mm 4.2mm 5.2mm 4.8 x 4.2 x 5.2mm