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. 169-5961
Mfr. Part No.ST330S16P1PBF
BrandVishay
HK$1,319.57
Each (In a Bag of 6)
units
330A SCR TO-118 1600V 9420A Stud 200mA 3V 600mA 3 49mm 42.5mm 74.5mm 49 x 42.5 x 74.5mm
RS Stock No. 774-3451
Mfr. Part No.2N6404G
BrandLittelfuse
HK$11.65
Each (In a Pack of 2)
units
10A SCR TO-220AB 600V 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. 124-1122
Mfr. Part No.TM8050H-8W
HK$43.99
Each (In a Pack of 2)
units
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
RS Stock No. 761-3997
Mfr. Part No.CS45-08io1
BrandIXYS
HK$39.92
Each
units
48A SCR TO-247AD 800V 560A Through Hole 200mA 1.6V 100mA 3 16.24mm 5.3mm 21.45mm 16.24 x 5.3 x 21.45mm
RS Stock No. 625-4988
Mfr. Part No.C106D1G
BrandLittelfuse
HK$5.11
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. 509-601
Mfr. Part No.BT258X-500R
HK$5.022
Each (In a Pack of 10)
units
5A SCR TO-220F 500V 82A Through Hole 0.2mA 1.5V 6mA 3 10.3mm 4.6mm 9.3mm 10.3 x 4.6 x 9.3mm
RS Stock No. 163-9798
Mfr. Part No.TN4015H-6T
HK$13.416
Each (In a Pack of 5)
units
25A SCR TO-220AB 600V 394A Through Hole 15mA 1.3V 60mA 3 10.4mm 4.6mm 15.9mm 10.4 x 4.6 x 15.9mm
RS Stock No. 795-9142
Mfr. Part No.X0202MA 1BA2
HK$4.322
Each (In a Pack of 25)
units
1.25A SCR TO-92 600V 25A Through Hole 200µA 0.8V 5mA 3 4.7mm 3.7mm 4.4mm 4.7 x 3.7 x 4.4mm
RS Stock No. 165-3041
Mfr. Part No.TISP4040H1BJR-S
BrandBourns
HK$2.646
Each (On a Reel of 3000)
units
- - - - - - - - - - - - - -
RS Stock No. 194-366
Mfr. Part No.CS20-16IO1
BrandIXYS
HK$44.86
Each
units
19A SCR TO-247AD 1600V 215A Through Hole 65mA 1V 100mA 3 16.26mm - 21.46mm -
RS Stock No. 165-5329
Mfr. Part No.TN2540-800G-TR
HK$11.574
Each (On a Reel of 1000)
units
16A SCR D2PAK (TO-263) 800V 314A Surface Mount 40mA 1.3V 50mA 3 10.28mm 9.35mm 4.6mm 10.28 x 9.35 x 4.6mm
New
RS Stock No. 192-5040
Mfr. Part No.TN2010H-6G
HK$8.485
Each (In a Pack of 10)
units
12.7A SCR D2PAK 600V 180A Surface Mount 10mA 1.3V 40mA 3 10.28mm 9.35mm 4.6mm 10.28 x 9.35 x 4.6mm
RS Stock No. 171-9491
Mfr. Part No.P0640SCLRP
BrandLittelfuse
HK$5.46
Each (On a Reel of 2500)
units
500A SIDACtor DO-214AA - 35A Surface Mount 2.2mA 4V 150mA 2 4.6mm 3.95mm 2.45mm 4.6 x 3.95 x 2.45mm
RS Stock No. 145-9467
Mfr. Part No.X0403MF 1AA2
HK$5.88
Each (In a Bag of 250)
units
4A SCR TO-202 600V 33A Through Hole - 0.8V 5mA 3 10.1mm 4.5mm 7.3mm 10.1 x 4.5 x 7.3mm
RS Stock No. 227-9208
Mfr. Part No.VS-ST230C12C0
BrandVishay
HK$543.24
Each
units
410A PCT TO-200AB 1200V 5970A Screw Mount 150mA 3V 600mA 3 42mm 42mm 14.4mm 42 x 42 x 14.4mm
RS Stock No. 135-8275
Mfr. Part No.CLA30E1200HB
BrandIXYS
HK$31.28
Each (In a Pack of 2)
units
30A SCR TO-247 1200V 325A Through Hole 50mA 1.6V 60mA 3 16.24mm 5.3mm 21.45mm 16.24 x 5.3 x 21.45mm
RS Stock No. 171-9665
Mfr. Part No.P0640SCLRP
BrandLittelfuse
HK$12.75
Each (In a Pack of 5)
units
500A SIDACtor DO-214AA - 35A Surface Mount 2.2mA 4V 150mA 2 4.6mm 3.95mm 2.45mm 4.6 x 3.95 x 2.45mm
RS Stock No. 918-9802
Mfr. Part No.VS-16TTS08-M3
BrandVishay
HK$33.879
Each (In a Tube of 50)
units
10A SCR TO-220AB 800V 200A Through Hole 90mA 3V 150mA 3 10.51mm 15.49mm 4.65mm 10.51 x 15.49 x 4.65mm
RS Stock No. 168-6666
Mfr. Part No.TYN640RG
HK$18.698
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. 710-2702
Mfr. Part No.VS-25TTS08STRL-M3
BrandVishay
HK$18.40
Each
units
16A SCR D2PAK (TO-263) 800V 350A Surface Mount 45mA 2V 100mA 3 10.67mm 9.65mm 4.83mm 10.67 x 9.65 x 4.83mm
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