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. 485-4299
Mfr. Part No.BT169G,112
SGD0.442
Each (In a Pack of 25)
units
0.5A SCR SPT 600V 9A Through Hole 0.2mA 0.8V 5mA 3 4.8mm 4.2mm 5.2mm 4.8 x 4.2 x 5.2mm
RS Stock No. 166-0389
Mfr. Part No.BT169G,112
SGD0.125
Each (In a Bag of 1000)
units
0.5A SCR SPT 600V 9A Through Hole 0.2mA 0.8V 5mA 3 4.8mm 4.2mm 5.2mm 4.8 x 4.2 x 5.2mm
RS Stock No. 509-471
Mfr. Part No.BT169D
SGD0.442
Each (In a Pack of 50)
units
0.5A SCR SPT 400V 9A Through Hole 0.2mA 0.8V 5mA 3 4.8mm 4.2mm 5.2mm 4.8 x 4.2 x 5.2mm
RS Stock No. 123-1455
Mfr. Part No.FS0103MA
SGD0.122
Each (In a Pack of 100)
units
0.8A SCR TO-92 600V 7 A @ 50 Hz, 8 A @ 60 Hz Through Hole 200µA 0.8V 5mA 3 4.8mm 3.86mm 4.8mm 4.8 x 3.86 x 4.8mm
RS Stock No. 760-9291
Mfr. Part No.DCR590E22
BrandDynex
SGD155.22
Each
units
590A SCR Type G 2200V 7800A Stud 300mA 3V 200mA 3 - - 14.5mm 42 (Dia.) x 14.5mm
RS Stock No. 166-1424
Mfr. Part No.BT169D
SGD0.125
Each (In a Bag of 1000)
units
0.5A SCR SPT 400V 9A Through Hole 0.2mA 0.8V 5mA 3 4.8mm 4.2mm 5.2mm 4.8 x 4.2 x 5.2mm
RS Stock No. 484-2870
Mfr. Part No.BT152-400R,127
SGD1.704
Each (In a Pack of 5)
units
13A SCR TO-220AB 450V 220A Through Hole 32mA 1.5V 60mA 3 10.3mm 4.7mm 9.4mm 10.3 x 4.7 x 9.4mm
RS Stock No. 760-9281
Mfr. Part No.DCR720E18
BrandDynex
SGD145.22
Each
units
720A SCR Type G 1800V 8300A Stud 300mA 3V 200mA 3 - - 14.5mm 42 (Dia.) x 14.5mm
RS Stock No. 761-4000
Mfr. Part No.CS45-12io1
BrandIXYS
SGD8.44
Each
units
48A SCR TO-247AD 1200V 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. 839-1395
Mfr. Part No.T1190N16TOFVTXPSA1
BrandInfineon
SGD505.68
Each
units
1190A PCT BG-T7526K-1 1600V 25500A Stud 250mA 2V 500mA 5 - - 26.5mm 75 (Dia.) x 26.5mm
RS Stock No. 124-5420
Mfr. Part No.NYC0102BLT1G
BrandLittelfuse
SGD0.182
Each (On a Reel of 3000)
units
0.25A SCR SOT-23 200V 7A Surface Mount 200µA 0.8V 6mA 3 2.9mm 1.3mm 0.94mm 2.9 x 1.3 x 0.94mm
RS Stock No. 301-619
Mfr. Part No.VS-40TPS12A-M3
BrandVishay
SGD13.47
Each
units
35A SCR TO-247AC 1200V 600A Through Hole 40mA 2.5V 150mA 3 15.87mm 5.31mm 20.7mm 15.87 x 5.31 x 20.7mm
RS Stock No. 509-465
Mfr. Part No.BT168GW
SGD0.313
Each (In a Pack of 20)
units
0.63A SCR SOT-223 (SC-73) 600V 9A Surface Mount 0.2mA 0.8V 5mA 4 6.7mm 3.7mm 1.7mm 6.7 x 3.7 x 1.7mm
RS Stock No. 700-5576
Mfr. Part No.VS-181RKI40PBF
BrandVishay
SGD110.43
Each
units
180A PCT TO-93 400V 4000A Thread Mount 150mA 2.5V 600mA 3 35mm 30.33mm 49.5mm 35 x 30.33 x 49.5mm
RS Stock No. 817-2465
Mfr. Part No.VS-50RIA80
BrandVishay
SGD30.55
Each
units
80A SCR TO-65 800V 1490A Thread Mount 250mA 3.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
RS Stock No. 919-4404
Mfr. Part No.VS-40TPS12A-M3
BrandVishay
SGD11.59
Each (In a Tube of 25)
units
35A SCR TO-247AC 1200V 600A Through Hole 40mA 2.5V 150mA 3 15.87mm 5.31mm 20.7mm 15.87 x 5.31 x 20.7mm
RS Stock No. 177-5214
Mfr. Part No.MCR68-2G
BrandLittelfuse
SGD0.991
Each (In a Box of 500)
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. 165-6237
Mfr. Part No.VS-50RIA80
BrandVishay
SGD23.72
Each (In a Bag of 100)
units
80A SCR TO-65 800V 1490A Thread Mount 250mA 3.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
RS Stock No. 839-1357
Mfr. Part No.T390N16TOFXPSA1
BrandInfineon
SGD153.88
Each
units
381A PCT BG-T4214K0-1 1600V 4900A Stud 150mA 2V 200mA 5 - - 14.5mm 42 (Dia.) x 14.5 (Height)mm
RS Stock No. 625-4988
Mfr. Part No.C106D1G
BrandLittelfuse
SGD0.90
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
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