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. 168-6666
Mfr. Part No.TYN640RG
$3.176
Each (In a Tube of 50)
units
25A SCR TO-220AB 600V 480A Through Hole 35mA 1.3V 75mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS Stock No. 687-1019
Mfr. Part No.TYN640RG
$4.41
Each (In a Pack of 2)
units
25A SCR TO-220AB 600V 480A Through Hole 35mA 1.3V 75mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS Stock No. 168-8046
Mfr. Part No.TXN625RG
$2.002
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. 829-0469
Mfr. Part No.TXN625RG
$4.94
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. 793-1923
Mfr. Part No.S4065JTP
BrandLittelfuse
$11.58
Each
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. 178-7030
Mfr. Part No.S4065JTP
BrandLittelfuse
$7.568
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. 103-2939
Mfr. Part No.2N6507G
BrandLittelfuse
$2.497
Each (In a Box of 500)
units
16A SCR TO-220AB 400V 250A Through Hole 30mA 1.5V 40mA 3 10.28mm 4.82mm 9.28mm 10.28 x 4.82 x 9.28mm
RS Stock No. 772-5478
Mfr. Part No.CR02AM-8-B#F00
$0.709
Each (In a Pack of 15)
units
0.3A SCR TO-92 400V 10A Through Hole 100µA 0.8V 3mA 3 5mm 3.9mm 5mm 5 x 3.9 x 5mm
RS Stock No. 544-9999
Mfr. Part No.2N6507G
BrandLittelfuse
$3.95
Each
units
16A SCR TO-220AB 400V 250A Through Hole 30mA 1.5V 40mA 3 10.28mm 4.82mm 9.28mm 10.28 x 4.82 x 9.28mm
RS Stock No. 625-4994
Mfr. Part No.C106M1G
BrandLittelfuse
$1.18
Each
units
2.55A SCR TO-225 600V 20A Through Hole 0.2mA 0.8V 3mA 3 7.74mm 2.66mm 11.04mm 7.74 x 2.66 x 11.04mm
RS Stock No. 171-0024
Mfr. Part No.C106M1G
BrandLittelfuse
$0.491
Each (In a Box of 500)
units
2.55A SCR TO-225 600V 20A Through Hole 0.2mA 0.8V 3mA 3 7.74mm 2.66mm 11.04mm 7.74 x 2.66 x 11.04mm
RS Stock No. 687-1000
Mfr. Part No.TYN1225RG
$4.93
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. 168-9404
Mfr. Part No.BT151-500R,127
$0.767
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. 166-0389
Mfr. Part No.BT169G,112
$0.126
Each (In a Bag of 1000)
units
0.5A SCR SPT 600V 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. 509-566
Mfr. Part No.BT151-500R,127
$0.782
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. 485-4299
Mfr. Part No.BT169G,112
$0.493
Each (In a Pack of 25)
units
0.5A SCR SPT 600V 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. 168-6662
Mfr. Part No.TYN1225RG
$4.015
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. 484-2864
Mfr. Part No.BT151-800R
$1.266
Each (In a Pack of 5)
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. 194-372
Mfr. Part No.CS23-12IO2
BrandIXYS
$50.65
Each
units
32A SCR TO-208AA 1200V 480A Thread Mount 50mA 2.5V 100mA 3 15.7mm 14mm 39.5mm 15.7 x 14 x 39.5mm
RS Stock No. 484-2870
Mfr. Part No.BT152-400R,127
$1.782
Each (In a Pack of 5)
units
13A SCR TO-220AB 450V 220A Through Hole 32mA 1.5V 60mA 3 10.3mm 4.7mm 9.4mm 10.3 x 4.7 x 9.4mm
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