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 it’s 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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Part Details Brand 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 Peak On-State Voltage Repetitive Peak Off-State Current Repetitive Peak Forward Blocking Voltage Diameter Off-State Voltage Maximum Operating Temperature Minimum Operating Temperature
Littelfuse, 2N6400G, Thyristor, 50V 16A, 60mA 3-Pin, TO-220AB Littelfuse 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 1.7V 2mA 50V - - +125 °C -40 °C
Littelfuse, 2N6405G, Thyristor, 800V 10A, 60mA 3-Pin, TO-220AB Littelfuse 10A SCR TO-220AB 800V 160A Through Hole 60mA 2.5V 60mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm 1.7V 2mA 800V - - +125 °C -40 °C
Littelfuse, 2N6508G, Thyristor, 600V 16A, 75mA 3-Pin, TO-220AB Littelfuse 16A SCR TO-220AB 600V 250A Through Hole 75mA 1.5V 80mA 3 10.28mm 4.82mm 15.75mm 10.28 x 4.82 x 15.75mm 1.8V 2mA 600V - - +125 °C -40 °C
Littelfuse, 2N6509TG, Thyristor, 800V, 75mA 3-Pin, TO-220 Littelfuse - 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 1.8V - 800V - - +125 °C -40 °C
Littelfuse, C106BG, Thyristor, 200V 2.55A, 500μA 3-Pin, TO-225AA Littelfuse 2.55A SCR TO-225AA 200V 20A Through Hole 500µA 1V 6mA 3 7.74mm 2.66mm 11.04mm 7.74 x 2.66 x 11.04mm 2.2V 100µA 200V - - +110 °C -40 °C
Littelfuse, C106DG, Thyristor, 400V 2.55A, 500μA 3-Pin, TO-225AA Littelfuse 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 2.2V 100µA 400V - - +110 °C -40 °C
Littelfuse, C106MG, Thyristor, 600V 2.55A, 500μA 3-Pin, TO-225AA Littelfuse 2.55A SCR TO-225AA 600V 20A Through Hole 500µA 1V 6mA 3 7.74mm 2.66mm 11.04mm 7.74 x 2.66 x 11.04mm 2.2V 100µA 600V - - +110 °C -40 °C
Littelfuse, MCR08BT1G, Thyristor, 200V 0.8A, 200μA 3+Tab-Pin, SOT-223
  • € 0.24
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Littelfuse 0.8A SCR SOT-223 200V 8A Surface Mount 200µA 0.8V 5mA 3+Tab 6.7mm 3.7mm 1.65mm 6.7 x 3.7 x 1.65mm 1.7V 200 μA @ Tj 110°C 600V - - +110 °C -40 °C
Littelfuse, MCR68-2G, Thyristor, 50V 8A, 30mA 3-Pin, TO-220AB Littelfuse 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 2.2V 2mA 50V - - +125 °C -40 °C
Littelfuse, MCR716T4G, Thyristor, 400V 2.6A, 300μA 3-Pin, DPAK (TO-252)
  • € 0.80
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Littelfuse 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 2.2V - - - - +110 °C -40 °C
Littelfuse, MCR72-3G, Thyristor, 100V 8A, 200mA 3-Pin, TO-220AB Littelfuse 8A SCR TO-220AB 100V 100A Through Hole 200mA 1.5V 6mA 3 10.53mm 4.83mm 15.75mm 10.53 x 4.83 x 15.75mm 2V 500µA 100V - - +110 °C -40 °C
Littelfuse, MCR72-6G, Thyristor, 400V 8A, 200mA 3-Pin, TO-220AB Littelfuse 8A SCR TO-220AB 400V 100A Through Hole 200mA 1.5V 6mA 3 10.53mm 4.83mm 15.75mm 10.53 x 4.83 x 15.75mm 2V 500µA 400V - - +110 °C -40 °C
Littelfuse, MCR72-8G, Thyristor, 600V 8A, 200μA 3-Pin, TO-220AB Littelfuse 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 2V 500µA 600V - - +110 °C -40 °C
Littelfuse, S4065JTP, Thyristor, 400V 65A, 50mA 3-Pin, TO-218X Littelfuse 65A SCR TO-218X 400V 950A Through Hole 50mA 2V 80mA 3 16mm 4.78mm 21.21mm 16 x 4.78 x 21.21mm 1.8V 0.02mA - - - +125 °C -40 °C
Littelfuse, S6065KTP, Thyristor, 600V 65A, 50mA 3-Pin, TO-218AC Littelfuse 65A SCR TO-218AC 600V 950A Through Hole 50mA 2V 80mA 3 16mm 4.78mm 21.21mm 16 x 4.78 x 21.21mm 1.8V 0.02mA - - - +125 °C -40 °C
STMicroelectronics, BTW68-1200RG, Thyristor, 1200V 19A, 50mA 3-Pin, TOP3 STMicroelectronics 19A SCR TOP3 1200V 420A Through Hole 50mA 1.5V 75mA 3 15.5mm 4.6mm 21.1mm 15.5 x 4.6 x 21.1mm 2.1V 20µA 600 → 1200V - - +125 °C -40 °C
STMicroelectronics, TM8050H-8D3-TR, Thyristor, 800V 50A, 50mA 2+Tab-Pin, D3PAK STMicroelectronics 50A SCR D3PAK 800V 731A Surface Mount 50mA 1.5V 100mA 2+Tab 16.05mm 14mm 5.1mm 16.05 x 14 x 5.1mm 1.55V - 800V - - +150 °C -40 °C
STMicroelectronics, TM8050H-8W, Thyristor, 800V 50A, 50mA 3-Pin, TO-247 STMicroelectronics 50A SCR TO-247 800V 731A Through Hole 50mA 1.5V 100mA 3 15.75mm 5.15mm 20.15mm 15.75 x 5.15 x 20.15mm 1.55V - 800V - - +150 °C -40 °C
Vishay, VS-10TTS08S-M3, Thyristor, 800V 6.5A, 15mA 3-Pin, D2PAK (TO-263)
  • € 1.19
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Vishay 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 1.15V 0.05mA 800V - - +125 °C -40 °C
Vishay, VS-25TTS12S-M3, Thyristor, 1200V 16A, 45mA 3-Pin, D2PAK (TO-263) Vishay 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 1.25V 0.5mA 1200V - - +125 °C -40 °C
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