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. 103-2940
Mfr. Part No.2N6509G
BrandLittelfuse
TWD45.10
Each (In a Box of 500)
units
16A SCR TO-220AB 800V 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. 545-0006
Mfr. Part No.2N6509G
BrandLittelfuse
TWD50.00
Each
units
16A SCR TO-220AB 800V 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. 800-9200
Mfr. Part No.2N6509TG
BrandLittelfuse
TWD41.60
Each (In a Pack of 10)
units
- SCR TO-220 800V 250A Through Hole 75mA 1.5V 80mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 177-5179
Mfr. Part No.2N6509TG
BrandLittelfuse
TWD40.80
Each (In a Tube of 50)
units
- SCR TO-220 800V 250A Through Hole 75mA 1.5V 80mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 878-1782
Mfr. Part No.L6008D8TP
BrandLittelfuse
TWD31.30
Each (In a Pack of 750)
units
8A - DPAK (TO-252) 600V 85A Surface Mount 10 mA, 20 mA 1.3V 20mA 3 6.73mm 6.22mm 2.41mm 6.73 x 6.22 x 2.41mm
RS Stock No. 878-1867
Mfr. Part No.S6004DS2TP
BrandLittelfuse
TWD25.10
Each (In a Pack of 750)
units
4A SCR DPAK (TO-252) 600V 30A Surface Mount 200µA 0.8V 6mA 3 6.73mm 6.22mm 2.41mm 6.73 x 6.22 x 2.41mm
RS Stock No. 625-4988
Mfr. Part No.C106D1G
BrandLittelfuse
TWD20.00
Each
units
2.55A SCR TO-225 400V 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. 103-2980
Mfr. Part No.C106D1G
BrandLittelfuse
TWD10.10
Each (In a Box of 500)
units
2.55A SCR TO-225 400V 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. 793-1923
Mfr. Part No.S4065JTP
BrandLittelfuse
TWD130.00
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. 774-3559
Mfr. Part No.MCR72-8G
BrandLittelfuse
TWD41.00
Each (In a Pack of 2)
units
8A SCR TO-220AB 600V 100A Through Hole 200µA 1.5V 6mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 878-1823
Mfr. Part No.S8012R
BrandLittelfuse
TWD34.10
Each (In a Pack of 500)
units
12A SCR TO-220 800V 130A Through Hole 20mA 1.5V 40mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS Stock No. 862-4944
Mfr. Part No.MCR68-2G
BrandLittelfuse
TWD30.90
Each (In a Pack of 10)
units
8A SCR TO-220AB 50V 100A Through Hole 30mA 1.5V 50mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 171-9596
Mfr. Part No.S6025LTP
BrandLittelfuse
TWD84.00
Each (In a Pack of 5)
units
25 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. 808-3996
Mfr. Part No.MCR8SDG
BrandLittelfuse
TWD25.10
Each (In a Pack of 20)
units
8A SCR TO-220AB 400V 80A Through Hole 200µA 1.5V 6mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 807-9953
Mfr. Part No.MCR716T4G
BrandLittelfuse
TWD20.70
Each (In a Pack of 50)
units
2.6A SCR DPAK (TO-252) 400V 25A Surface Mount 300µA 1V 10mA 3 6.73mm 6.22mm 2.38mm 6.73 x 6.22 x 2.38mm
RS Stock No. 177-5203
Mfr. Part No.C106DG
BrandLittelfuse
TWD10.30
Each (In a Box of 500)
units
2.55A SCR TO-225AA 400V 20A Through Hole 500µA 1V 6mA 3 7.74mm 2.66mm 11.04mm 7.74 x 2.66 x 11.04mm
RS Stock No. 171-9508
Mfr. Part No.S6025LTP
BrandLittelfuse
TWD51.20
Each (In a Tube of 500)
units
25 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. 793-1926
Mfr. Part No.S602TSRP
BrandLittelfuse
TWD20.50
Each (In a Pack of 10)
units
1.5A SCR SOT-223 600V 15A Surface Mount 200µA 0.8V 5mA 3+Tab 6.7mm 3.7mm 1.7mm 6.7 x 3.7 x 1.7mm
RS Stock No. 862-4904
Mfr. Part No.2N6400G
BrandLittelfuse
TWD39.50
Each (In a Pack of 10)
units
16A SCR TO-220AB 50V 160A Through Hole 60mA 2.5V 60mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm
RS Stock No. 878-1794
Mfr. Part No.Q8010L4
BrandLittelfuse
TWD56.70
Each (In a Pack of 500)
units
10A - TO-220 800V 120A Through Hole 25 mA, 50 mA 1.3V 35mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm