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.

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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庫存編號 714-2640
製造零件編號BTW69-1200RG
HK$66.26
單位
32A SCR TOP3 1200V 610A Through Hole 80mA 1.3V 150mA 3 15.5mm 4.6mm 12.85mm 15.5 x 4.6 x 12.85mm
RS庫存編號 168-6673
製造零件編號TYN610RG
HK$7.127
毎管:50 個
單位
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庫存編號 687-1053
製造零件編號TYN610RG
HK$8.618
/個 (每包:5個)
單位
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庫存編號 103-1577
製造零件編號TYN1012RG
HK$15.135
毎管:50 個
單位
8A SCR TO-220AB 1000V 145A Through Hole 15mA 1.3V 30mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS庫存編號 165-5771
製造零件編號BTW69-1200N
HK$31.40
毎管:10 個
單位
31A SCR TOP3 1200V 763A Through Hole 50mA 1.3V 100mA 3 15.5mm 4.6mm 21.1mm 15.5 x 4.6 x 21.1mm
RS庫存編號 829-6858
製造零件編號BTW69-1200N
HK$48.81
單位
31A SCR TOP3 1200V 763A Through Hole 50mA 1.3V 100mA 3 15.5mm 4.6mm 21.1mm 15.5 x 4.6 x 21.1mm
RS庫存編號 714-2669
製造零件編號TYN1012RG
HK$14.962
/個 (每包:5個)
單位
8A SCR TO-220AB 1000V 145A Through Hole 15mA 1.3V 30mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS庫存編號 102-3580
製造零件編號BTW69-1200RG
HK$54.511
毎管:30 個
單位
32A SCR TOP3 1200V 610A Through Hole 80mA 1.3V 150mA 3 15.5mm 4.6mm 12.85mm 15.5 x 4.6 x 12.85mm
RS庫存編號 687-1019
製造零件編號TYN640RG
HK$20.445
/個 (每包:2個)
單位
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庫存編號 168-6278
製造零件編號P0111MN 5AA4
HK$2.156
個 (在毎卷:1000)
單位
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庫存編號 877-3043
製造零件編號TN1515-600B-TR
HK$8.649
/個 (每包:10個)
單位
9.5A SCR DPAK (TO-252) 600V 165A Surface Mount 15mA 1.3V 40mA 3 6.6mm 6.2mm 2.4mm 6.6 x 6.2 x 2.4mm
RS庫存編號 168-6662
製造零件編號TYN1225RG
HK$21.659
毎管:50 個
單位
16A SCR TO-220AB 1200V 260A Through Hole 40mA 1.5V 50mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS庫存編號 165-5573
製造零件編號TN1515-600B-TR
HK$6.161
個 (在毎卷:2500)
單位
9.5A SCR DPAK (TO-252) 600V 165A Surface Mount 15mA 1.3V 40mA 3 6.6mm 6.2mm 2.4mm 6.6 x 6.2 x 2.4mm
RS庫存編號 163-7338
製造零件編號TN4015H-6T
HK$9.362
毎管:50 個
單位
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庫存編號 168-8062
製造零件編號TS1220-600B
HK$9.559
毎管:75 個
單位
8A SCR DPAK (TO-252) 700V - Surface Mount 200µA 0.8V 5mA 3 6.73mm 6.22mm 2.4mm 6.73 x 6.22 x 2.4mm
RS庫存編號 829-0683
製造零件編號BTW68-1200RG
HK$53.46
單位
19A SCR TOP3 1200V 420A Through Hole 50mA 1.5V 75mA 3 15.5mm 4.6mm 21.1mm 15.5 x 4.6 x 21.1mm
RS庫存編號 165-5510
製造零件編號P0118MA 2AL3
HK$0.764
Each (On a Tape of 2000)
單位
0.5A SCR TO-92 600V 8A Through Hole 5µA 0.8V 5mA 3 4.7mm 3.7mm 4.4mm 4.7 x 3.7 x 4.4mm
RS庫存編號 877-2801
製造零件編號P0118MA 2AL3
HK$2.161
/個 (每包:25個)
單位
0.5A SCR TO-92 600V 8A Through Hole 5µA 0.8V 5mA 3 4.7mm 3.7mm 4.4mm 4.7 x 3.7 x 4.4mm
RS庫存編號 355-2835
製造零件編號TS420-600T
HK$15.71
單位
2.5A SCR TO-220AB 600V 33A Through Hole 0.2mA 0.8V 5mA 3 10.4mm 4.6mm 9.15mm 10.4 x 4.6 x 9.15mm
RS庫存編號 877-3147
製造零件編號X0202MA 2BL2
HK$3.713
/個 (每包:20個)
單位
0.8A 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