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 it’s 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.

...
Read more Read less

Filters

Viewing 1 - 20 of 142 products
Results per page
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. 145-1769
Mfr. Part No.VS-70TPS12PBF
BrandVishay
R 110.058
Each (In a Tube of 25)
units
70A SCR Super-247 1200V 1400A Through Hole 100mA 1.5V 200mA 3 16.1mm - 20.8mm -
RS stock no. 700-5591
Mfr. Part No.VS-70TPS12PBF
BrandVishay
R 127.85
Each
units
70A SCR Super-247 1200V 1400A Through Hole 100mA 1.5V 200mA 3 16.1mm - 20.8mm -
RS stock no. 395-3474
Mfr. Part No.VS-50RIA120
BrandVishay
R 354.74
Each
units
50A SCR TO-65 1200V 1490A Thread Mount 100mA 2.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
RS stock no. 165-2391
Mfr. Part No.VS-50RIA120
BrandVishay
R 258.531
Each (In a Bag of 100)
units
50A SCR TO-65 1200V 1490A Thread Mount 100mA 2.5V 200mA 2 19.2mm 17.35mm 42.5mm 19.2 x 17.35 x 42.5mm
RS stock no. 357-4330
Mfr. Part No.VS-80RIA120PBF
BrandVishay
R 557.11
Each
units
80A PCT TO-94 1200V 1990A Thread Mount 120mA 2.5V 200mA 3 29.5mm 27mm 188mm 29.5 x 27 x 188mm
RS stock no. 169-5883
Mfr. Part No.80RIA120PBF
BrandVishay
R 498.766
Each (In a Bag of 25)
units
80A PCT TO-94 1200V 1990A Thread Mount 120mA 2.5V 200mA 3 29.5mm 27mm 188mm 29.5 x 27 x 188mm
RS stock no. 165-2437
Mfr. Part No.VS-ST083S08PFM1P
BrandVishay
R 1,153.719
Each (In a Bag of 25)
units
85A SCR TO-94 800V 2560A Thread Mount 200mA 3V 600mA 3 - - 191mm 29.5 (Dia.) x 191mm
RS stock no. 169-5955
Mfr. Part No.T50RIA60
BrandVishay
R 428.757
Each (In a Box of 10)
units
50A SCR D 55 600V 1370A Panel Mount 100mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
RS stock no. 395-9214
Mfr. Part No.VS-T90RIA60
BrandVishay
R 564.00
Each
units
90A SCR D 55 600V 1870A Panel Mount 120mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
RS stock no. 357-3438
Mfr. Part No.VS-ST083S08PFM1P
BrandVishay
R 1,488.63
Each
units
85A SCR TO-94 800V 2560A Thread Mount 200mA 3V 600mA 3 - - 191mm 29.5 (Dia.) x 191mm
RS stock no. 395-9157
Mfr. Part No.VS-T50RIA60
BrandVishay
R 471.15
Each
units
50A SCR D 55 600V 1370A Panel Mount 100mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
RS stock no. 227-9214
Mfr. Part No.VS-ST230C16C0
BrandVishay
R 1,129.72
Each
units
410A PCT TO-200AB 1600V 5970A Screw Mount 150mA 3V 600mA 3 42mm 42mm 14.4mm 42 x 42 x 14.4mm
RS stock no. 169-5957
Mfr. Part No.T90RIA60
BrandVishay
R 504.142
Each (In a Box of 10)
units
90A SCR D 55 600V 1870A Panel Mount 120mA 2.5V 200mA 3 41mm 27mm 25mm 41 x 27 x 25mm
RS stock no. 165-2611
Mfr. Part No.VS-ST230C16C0
BrandVishay
R 1,042.95
Each (In a Box of 12)
units
410A PCT TO-200AB 1600V 5970A Screw Mount 150mA 3V 600mA 3 42mm 42mm 14.4mm 42 x 42 x 14.4mm
RS stock no. 379-8031
Mfr. Part No.VS-T90RIA120
BrandVishay
R 609.23
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. 169-5873
Mfr. Part No.VS-16TTS12PBF
BrandVishay
R 42.222
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS stock no. 395-9242
Mfr. Part No.VS-ST110S16P1PBF
BrandVishay
R 1,107.29
Each
units
110A PCT TO-94 1600V 2830A Thread Mount 150mA 3V 600mA 3 29.5mm - 50mm -
RS stock no. 165-2605
Mfr. Part No.VS-T90RIA120
BrandVishay
R 540.481
Each (In a Box of 10)
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. 287-9684
Mfr. Part No.VS-16TTS12-M3
BrandVishay
R 71.69
Each
units
10A SCR TO-220AC 1200V 200A Through Hole 60mA 2V 100mA 3 10.54mm 4.57mm 8.76mm 10.54 x 4.57 x 8.76mm
RS stock no. 169-5959
Mfr. Part No.ST110S16P1PBF
BrandVishay
R 1,007.332
Each (In a Bag of 25)
units
110A PCT TO-94 1600V 2830A Thread Mount 150mA 3V 600mA 3 29.5mm - 50mm -