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. 177-5212
Mfr. Part No.2N6508G
BrandLittelfuse
R 19.407
Each (In a Box of 500)
units
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
RS stock no. 793-1932
Mfr. Part No.S8040R
BrandLittelfuse
R 54.008
Each (In a Pack of 5)
units
40A SCR TO-220AB 400V 520A Through Hole 40000µA 1.5V 60mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS stock no. 862-4929
Mfr. Part No.2N6508G
BrandLittelfuse
R 21.483
Each (In a Pack of 10)
units
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
RS stock no. 878-1811
Mfr. Part No.SK025L
BrandLittelfuse
R 39.555
Each (In a Pack of 10)
units
25A SCR TO-220 1000V 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. 165-9922
Mfr. Part No.S8040R
BrandLittelfuse
R 31.971
Each (On a Reel of 500)
units
40A SCR TO-220AB 400V 520A Through Hole 40000µA 1.5V 60mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS stock no. 178-7029
Mfr. Part No.S6065KTP
BrandLittelfuse
R 70.406
Each (In a Tube of 250)
units
65A SCR TO-218AC 600V 950A Through Hole 50mA 2V 80mA 3 16mm 4.78mm 21.21mm 16 x 4.78 x 21.21mm
RS stock no. 793-1920
Mfr. Part No.S6065KTP
BrandLittelfuse
R 103.85
Each
units
65A SCR TO-218AC 600V 950A Through Hole 50mA 2V 80mA 3 16mm 4.78mm 21.21mm 16 x 4.78 x 21.21mm
RS stock no. 544-9999
Mfr. Part No.2N6507G
BrandLittelfuse
R 21.92
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. 774-3559
Mfr. Part No.MCR72-8G
BrandLittelfuse
R 17.495
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. 878-1842
Mfr. Part No.SK055R
BrandLittelfuse
R 37.748
Each (In a Pack of 500)
units
55A SCR TO-220 1000V 650A Through Hole 40mA 1.5V 60mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS stock no. 800-9200
Mfr. Part No.2N6509TG
BrandLittelfuse
R 21.363
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. 103-2940
Mfr. Part No.2N6509G
BrandLittelfuse
R 19.542
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. 103-2939
Mfr. Part No.2N6507G
BrandLittelfuse
R 23.721
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. 545-0006
Mfr. Part No.2N6509G
BrandLittelfuse
R 21.54
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. 177-5179
Mfr. Part No.2N6509TG
BrandLittelfuse
R 19.472
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. 177-5205
Mfr. Part No.MCR72-8G
BrandLittelfuse
R 10.057
Each (In a Box of 500)
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. 177-5223
Mfr. Part No.MCR716T4G
BrandLittelfuse
R 6.036
Each (On a Reel of 2500)
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. 807-9940
Mfr. Part No.MCR12DSMT4G
BrandLittelfuse
R 11.463
Each (On a Tape of 50)
units
- SCR DPAK (TO-252) 600V 100A Surface Mount 300µA 1.5V 10mA 3 6.73mm 6.22mm 2.38mm 6.73 x 6.22 x 2.38mm
RS stock no. 171-0024
Mfr. Part No.C106M1G
BrandLittelfuse
R 5.512
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. 878-1631
Mfr. Part No.S8035KTP
BrandLittelfuse
R 50.634
Each (In a Pack of 250)
units
35A SCR TO-218AC 800V 500A Through Hole - 1.5V 50mA 3 16mm 4.78mm 21.21mm 16 x 4.78 x 21.21mm