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. 146-1718
Mfr. Part No.DCR960G18
BrandDynex
HK$1,231.38
Each (In a Box of 7)
units
960A SCR Type G 1800V 14000A Stud 300mA 3V 200mA 3 - - 26.5mm 58 (Dia.) x 26.5mm
RS Stock No. 687-0993
Mfr. Part No.P0102DA 5AL3
HK$2.96
Each (In a Pack of 25)
units
0.5A SCR TO-92 400V 8A Through Hole 0.2mA 0.8V 5mA 3 4.7mm 3.7mm 4.4mm 4.7 x 3.7 x 4.4mm
RS Stock No. 168-6663
Mfr. Part No.X0402NF 1AA2
HK$6.026
Each (In a Bag of 250)
units
0.9A SCR TO-202 800V 33A Through Hole 0.2mA 0.8V 5mA 3 10.1mm 4.5mm 7.3mm 10.1 x 4.5 x 7.3mm
RS Stock No. 192-5057
Mfr. Part No.TN4015H-6G
HK$14.368
Each (In a Pack of 5)
units
25A SCR D2PAK 600V 394A Surface Mount 15mA 1.3V 60mA 3 10.28mm 9.35mm 4.6mm 10.28 x 9.35 x 4.6mm
RS Stock No. 177-5209
Mfr. Part No.2N6400G
BrandLittelfuse
HK$7.117
Each (In a Box of 500)
units
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
RS Stock No. 171-9588
Mfr. Part No.S6020LTP
BrandLittelfuse
HK$17.64
Each (In a Pack of 5)
units
20A SCR TO-220AB - 300A Through Hole 30mA 1.5V 40mA 3 10.67mm 4.78mm 15.75mm 10.67 x 4.78 x 15.75mm
RS Stock No. 103-2940
Mfr. Part No.2N6509G
BrandLittelfuse
HK$10.086
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. 700-5633
Mfr. Part No.VS-ST700C18L1
BrandVishay
HK$1,269.09
Each
units
910A PCT TO-200AC 1800V 16400A Screw Mount 200mA 3V 600mA 2 58.5mm 58.5mm 27mm 58.5 x 58.5 x 27mm
RS Stock No. 163-9787
Mfr. Part No.TN4015H-6I
HK$13.09
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. 379-8031
Mfr. Part No.VS-T90RIA120
BrandVishay
HK$334.92
Each
units
90A SCR D 55 1200V 1870A Panel Mount 120mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
RS Stock No. 795-9142
Mfr. Part No.X0202MA 1BA2
HK$4.542
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. 700-5576
Mfr. Part No.VS-181RKI40PBF
BrandVishay
HK$627.06
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. 687-0962
Mfr. Part No.X0202MN 5BA4
HK$7.58
Each (In a Pack of 5)
units
0.8A SCR SOT-223 600V 25A Surface Mount 0.2mA 0.8V 5mA 3+Tab 6.5mm 3.5mm 1.8mm 6.5 x 3.5 x 1.8mm
RS Stock No. 178-1423
Mfr. Part No.BT151X-500R,127
HK$3.781
Each (In a Tube of 50)
units
7.5A SCR TO-220F 500V 110A Through Hole 15mA 1.5V 20mA 3 10.3mm 4.6mm 9.3mm 10.3 x 4.6 x 9.3mm
RS Stock No. 170-2399
Mfr. Part No.FS5030QP00TU
HK$14.268
Each (In a Tube of 30)
units
50A SCR TO-3P 1200V - Through Hole 80mA - - 3+Tab - - - -
RS Stock No. 169-5873
Mfr. Part No.VS-16TTS12PBF
BrandVishay
HK$23.176
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 123-1464
Mfr. Part No.FS2510MH TU
HK$4.379
Each (In a Pack of 10)
units
25A SCR TO-220AB 600V 300 A @ 50 Hz, 330 A @ 60 Hz Through Hole 25mA 1.3V 40mA 3 10.36mm 4.67mm 15.35mm 10.36 x 4.67 x 15.35mm
RS Stock No. 135-8291
Mfr. Part No.CLA80E1200HF
BrandIXYS
HK$55.02
Each
units
80A SCR PLUS247 1200V 970A Through Hole 80mA 1.6V 100mA 3 16.13mm 5.21mm 21.34mm 16.13 x 5.21 x 21.34mm
RS Stock No. 165-2845
Mfr. Part No.VS-181RKI40PBF
BrandVishay
HK$428.96
Each (In a Bag of 12)
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. 300-414
Mfr. Part No.VS-30TPS12-M3
BrandVishay
HK$52.54
Each
units
20A SCR TO-247AC 1200V 300A Through Hole 45mA 2V 100mA 3 15.87mm 5.31mm 20.7mm 15.87 x 5.31 x 20.7mm
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