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. 168-4649
Mfr. Part No.CS30-12IO1
BrandIXYS
HK$32.52
Each (In a Tube of 30)
units
31A SCR TO-247AD 1200V 320A Through Hole 80mA 1.2V 100mA 3 16.26mm 5.3mm 21.46mm 16.26 x 5.3 x 21.46mm
RS Stock No. 168-6673
Mfr. Part No.TYN610RG
HK$10.753
Each (In a Tube of 50)
units
6.4A SCR TO-220AB 600V 105A Through Hole 15mA 1.5V 30mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS Stock No. 254-0544
Mfr. Part No.VS-25RIA120
BrandVishay
HK$171.60
Each
units
25A SCR TO-48 1200V 440A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 227-9078
Mfr. Part No.VS-22RIA60
BrandVishay
HK$140.68
Each
units
22A SCR TO-48 600V 420A Thread Mount 60mA 2V 130mA 2 16.51mm - 41.8mm -
RS Stock No. 197-826
Mfr. Part No.CS30-16IO1
BrandIXYS
HK$44.33
Each
units
31A SCR TO-247AD 1600V 320A Through Hole 65mA 1V 100mA 3 16.26mm - 21.46mm -
RS Stock No. 357-5103
Mfr. Part No.VS-180RKI80PBF
BrandVishay
HK$531.99
Each
units
180A SCR TO-93 800V 4000A Thread Mount 150mA 2.5V 600mA 3 - - 234.5mm 35 (Dia.) x 234.5mm
RS Stock No. 167-320
Mfr. Part No.VS-40TPS12-M3
BrandVishay
HK$77.87
Each
units
35A SCR TO-247AC 1200V 600A Through Hole 150mA 2.5V 150mA 3 15.87mm 5.31mm 20.7mm 15.87 x 5.31 x 20.7mm
RS Stock No. 167-314
Mfr. Part No.VS-40TPS08-M3
BrandVishay
HK$76.93
Each
units
35A SCR TO-247AC 800V 600A Through Hole 150mA 2.5V 150mA 3 15.87mm 5.31mm 20.7mm 15.87 x 5.31 x 20.7mm
RS Stock No. 166-0034
Mfr. Part No.BT149G
HK$1.071
Each (On a Tape of 2000)
units
0.5A SCR TO-92 600V 9A Through Hole 200µA 0.8V 5mA 3 4.2mm 4.8mm 5.2mm 4.2 x 4.8 x 5.2mm
RS Stock No. 168-6278
Mfr. Part No.P0111MN 5AA4
HK$3.389
Each (On a Reel of 1000)
units
0.5A SCR SOT-223 600V 8A Surface Mount 0.025mA 0.8V 5mA 3+Tab 6.5mm 3.5mm 1.8mm 6.5 x 3.5 x 1.8mm
RS Stock No. 178-1396
Mfr. Part No.TM8050H-8W
HK$38.08
Each (In a Tube of 30)
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. 708-4222
Mfr. Part No.VS-16TTS08-M3
BrandVishay
HK$41.76
Each
units
10A SCR TO-220AC 800V 200A Through Hole 60mA 2V 100mA 3 10.54mm 4.57mm 8.76mm 10.54 x 4.57 x 8.76mm
RS Stock No. 163-9738
Mfr. Part No.TN1605H-6G-TR
HK$7.67
Each (In a Pack of 10)
units
10A SCR D2PAK 600V 153A Surface Mount 6mA 1.3V 20mA 2 + Tab 10.28mm 9.35mm 4.6mm 10.28 x 9.35 x 4.6mm
RS Stock No. 177-5179
Mfr. Part No.2N6509TG
BrandLittelfuse
HK$10.18
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. 774-3559
Mfr. Part No.MCR72-8G
BrandLittelfuse
HK$10.31
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. 168-4505
Mfr. Part No.N0992YS020-U9900
BrandIXYS
HK$1,257.48
Each (In a Box of 24)
units
992A SCR - 200V 12100A Stud 150mA 3V 500mA 3 - - 15.1mm 42 (Dia.) x 15.1mm
RS Stock No. 123-1461
Mfr. Part No.FS1209NH TU
HK$4.074
Each (In a Pack of 20)
units
12A SCR TO-220AB 800V 140 A @ 50 Hz, 145 A @ 60 Hz Through Hole 15mA 1.3V 30mA 3 10.36mm 4.67mm 15.35mm 10.36 x 4.67 x 15.35mm
RS Stock No. 284-882
Mfr. Part No.BT148-600R
HK$5.20
Each
units
2.5A SCR SOT-82 600V 38A Through Hole 0.2mA 1.5V 6mA 3 7.8mm 2.8mm 11.1mm 7.8 x 2.8 x 11.1mm
RS Stock No. 807-9953
Mfr. Part No.MCR716T4G
BrandLittelfuse
HK$5.33
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. 761-3997
Mfr. Part No.CS45-08io1
BrandIXYS
HK$40.73
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