Power Phase Control Thyristors SCR 100A – 400A, Stud Package

Power Phase Control Thyristors AS ENERGITM, also known as Silicon Controlled Rectifier (SCR), stud version are general-purpose thyristors, regulating and converting DC and AC currents to 400A at frequencies to 500 Hz in circuits with voltages to 4400V (depending on series).

Power stud thyristors series T have the following types (current): 100 A, 125 A, 160 A, 200 A, 250 A, 320 A, 400 Ampere.

Series of high-power stud thyristors

Part numbering guide for power stud thyristors

Technical passport for power stud thyristors

Installation recommendations for power thyristors

youtubeVideo: Reviews of high power thyristors and diodes

The thyristor has an industry-standard ceramic housing making it easy to integrate the device into existing equipment.

The polarity of the thyristor is determined by the icon on the case. The base of the thyristor is the Anode, the flexible power lead is the Cathode, the flexible wire exiting the base of the power lead is the auxiliary cathode, the flexible wire exiting the case is the control electrode (Gate). The technical specifications, part numbering guide, polarity, dimensions and recommended coolers for thyristors are listed below.

Air and water heat sinks are used to cool the thyristors. To provide reliable thermal and electrical contact with the heatsink a tightening torque Md must be observed during assembly. For better heat dissipation of thyristor during assembly, heat conducting paste is used.

The thyristors have a sealed housing isolating the functional part and the semiconductor element from mechanical impacts and environment. This thyristor has a stud design with a flexible power lead. Stud thyristors are notable for their ability to be used on moving parts.

Thyristors from AS Energi Global LLC have the following features: low static and dynamic losses, high values of VDRM/VRRM, extensive experience of using the devices in various industries, range of voltages from 100 to 9000 V and amperages from 100 to 6300 A, high resistance to thermal and electric cycling, natural or forced air cooling.

Our company provides a quality guarantee for thyristors of 2 years from the date of purchase. When supplying thyristors, if necessary, we provide technical passport and certificate of conformity.

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The final price of phase control stud thyristors depends on the voltage class, quantity, delivery terms, manufacturer, country of origin and form of payment.

For questions regarding the acquisition of High Power Thyristors, Diodes send an email request to:

[email protected]

And we will provide you a commercial offer for delivery.
For a large number, we will provide an individual price!!!

We are open to manufacture products at our production facilities
according to your requests and technical task.

High Power Stud Thyristor Series:


T151

T161, T261, T361

T171, T271, T371, T471

Power Thyristors T151 (100A)

Thyristors T151
Series Price Voltage
VDRM, VRRM
Average forward current
IT(AV) (TC, ºC)
Voltage code
VRRM / 100
Weight Package type Heatsink Data sheet
T151-100 on request
+
Add
300 - 1800V 100A (90ºC) 3 - 18 150 g ST5 O151 Datasheet

Detailed specifications of Power Thyristors T151

Series VDRM
VRRM
IT(AV)
(TC)
ITRMS ITSM Tjmax VTM/
ITM
VT(TO) rT IDRM
IRRM
(dVD/dt)cr IGT VGT (diT/dt)cr tq i2·t Rth(j-c)
V A(°C) A kA °C V/A V mΩ mA V/µs mA V A/µs µs kA2·s °C/W
T151-100 300-1800 100(90) 157 2.0 140 1.80/314 1.15 2.40 15 20-1000 200 2.5 160 250 20 0.30

Power Thyristors T161 (125A – 200A)

Thyristors T161
Series Price Voltage
VDRM, VRRM
Average forward current
IT(AV) (TC, ºC)
Voltage code
VRRM / 100
Weight Package type Heatsink Data sheet
T161-125 on request
+
Add
100 - 1800V 125A (101ºC)
183A (85ºC)
1 - 18 240 g ST6 O171, O271, O371, O471, OM101 Datasheet
T161-160 on request
+
Add
300 - 1800V 160A (87ºC) 3 - 18 240 g ST6 O171, O271, O371, O471, OM101 Datasheet
T161-200 on request
+
Add
300 - 1600V 200A (87ºC) 3 - 16 240 g ST6 O171, O271, O371, O471, OM101 Datasheet

Detailed specifications of Power Thyristors T161

Series VDRM
VRRM
IT(AV)
(TC)
ITRMS ITSM Tjmax VTM/
ITM
VT(TO) rT IDRM
IRRM
(dVD/dt)cr IGT VGT (diT/dt)cr tq i2·t Rth(j-c)
V A(°C) A kA °C V/A V mΩ mA V/µs mA V A/µs µs kA2·s °C/W
T161-125 100-1800 125(101)
183(85)
196 4.0 125 1.45/393 0.867 1.300 50 200-1000 250 2.5 800 125-500 60 0.15
T161-160 300-1800 160(87) 251 4.0 125 1.70/502 1.05 1.36 15 20-1000 200 2.5 125 250 80 0.15
T161-200 300-1600 200(87) 314 5.0 125 1.60/628 1.00 1.05 15 20-1000 200 2.5 160 250 125 0.13

Power Thyristors T261, T361 (160A)

Thyristors T261, T361
Series Price Voltage
VDRM, VRRM
Average forward current
IT(AV) (TC, ºC)
Voltage code
VRRM / 100
Weight Package type Heatsink Data sheet
T261-160 on request
+
Add
100 - 1800V 160A (92ºC)
186A (85ºC)
1 - 18 240 g ST6 O171, O271, O371, O471, OM101 Datasheet
T361-160 on request
+
Add
2400 - 2600V 160A (80ºC) 24 - 26 240 g ST6 O171, O271, O371, O471, OM101 Datasheet

Detailed specifications of Power Thyristors T261, T361

Series VDRM
VRRM
IT(AV)
(TC)
ITRMS ITSM Tjmax VTM/
ITM
VT(TO) rT IDRM
IRRM
(dVD/dt)cr IGT VGT (diT/dt)cr tq i2·t Rth(j-c)
V A(°C) A kA °C V/A V mΩ mA V/µs mA V A/µs µs kA2·s °C/W
T261-160 100-1800 160(92)
186(85)
251 4.5 125 1.55/502 0.850 1.278 50 200-1000 250 2.5 800 125-500 80 0.150
T361-160 2400-2600 160(80) 251 3.5 125 2.00/502 1.415 1.290 20 500-1000 250 2.5 125 250 61 0.145

Power Thyristors T171 (200A – 320A)

Thyristors T171
Series Price Voltage
VDRM, VRRM
Average forward current
IT(AV) (TC, ºC)
Voltage code
VRRM / 100
Weight Package type Heatsink Data sheet
T171-200 on request
+
Add
100 - 1800V 200A (102ºC)
310A (85ºC)
1 - 18 440 g ST7 O181, O281, OM105 Datasheet
T171-250 on request
+
Add
100 - 1800V 250A (94ºC)
307A (85ºC)
1 - 18 440 g ST7 O181, O281, OM105 Datasheet
T171-320 on request
+
Add
300 - 1800V 320A (87ºC) 3 - 18 440 g ST7 O181, O281, OM105 Datasheet

Detailed specifications of Power Thyristors T171

Series VDRM
VRRM
IT(AV)
(TC)
ITRMS ITSM Tjmax VTM/
ITM
VT(TO) rT IDRM
IRRM
(dVD/dt)cr IGT VGT (diT/dt)cr tq i2·t Rth(j-c)
V A(°C) A kA °C V/A V mΩ mA V/µs mA V A/µs µs kA2·s °C/W
T171-200 100-1800 200(90)
310(85)
314 6.0 125 1.45/628 1.027 0.641 70 200-1000 250 2.5 1000 125-500 170 0.085
T171-250 100-1800 250(94)
310(85)
393 6.5 125 1.55/785 1.036 0.653 70 200-1000 250 2.5 1000 125-500 200 0.085
T171-320 300-1800 320(87) 502 8.5 125 1.60/1004 1.050 0.530 30 20-1000 200 2.5 125 250 361 0.085

Power Thyristors T271 (250A – 400A)

Thyristors T271
Series Price Voltage
VDRM, VRRM
Average forward current
IT(AV) (TC, ºC)
Voltage code
VRRM / 100
Weight Package type Heatsink Data sheet
T271-250 on request
+
Add
100 - 800V 250A (123ºC)
409A (100ºC)
1 - 8 440 g ST7 (T.SB1) O181, O281, OM105 Datasheet
T271-320 on request
+
Add
100 - 800V 320A (116ºC)
429A (100ºC)
1 - 8 440 g ST7 (T.SB1) O181, O281, OM105 Datasheet
T271-400 on request
+
Add
100 - 800V 400A (105ºC) 1 - 8 440 g ST7 O181, O281, OM105 Datasheet

Detailed specifications of Power Thyristors T271

Series VDRM
VRRM
IT(AV)
(TC)
ITRMS ITSM Tjmax VTM/
ITM
VT(TO) rT IDRM
IRRM
(dVD/dt)cr IGT VGT (diT/dt)cr tq i2·t Rth(j-c)
V A(°C) A kA °C V/A V mΩ mA V/µs mA V A/µs µs kA2·s °C/W
T271-250 100-800 250(123)
409(100)
393 10.0 150 1.35/785 0.906 0.531 70 200-1000 250 2.5 800 125-500 450 0.085
T271-320 100-800 320(116)
429(100)
502 10.5 150 1.35/1005 0.871 0.472 70 200-1000 250 2.5 800 125-500 500 0.085
T271-400 100-800 400(105) 627 11.5 150 1.35/1256 0.800 0.450 30 200-1000 250 2.5 320 160 620 0.090

Power Thyristors T371 (200A – 320A)

Thyristors T371
Series Price Voltage
VDRM, VRRM
Average forward current
IT(AV) (TC, ºC)
Voltage code
VRRM / 100
Weight Package type Heatsink Data sheet
T371-200 on request
+
Add
100 - 1800V 200A (102ºC)
310A (85ºC)
1 - 18 470 g T.SB2 O181, O281, OM105 Datasheet
T371-250 on request
+
Add
2200 - 2600V 250A (94ºC) 22 - 26 440 g ST7 (T.SB2) O181, O281, OM105 Datasheet
T371-320 on request
+
Add
2000 - 2200V 320A (82ºC) 20 - 22 440 g ST7 (T.SB2) O181, O281, OM105 Datasheet

Detailed specifications of Power Thyristors T371

Series VDRM
VRRM
IT(AV)
(TC)
ITRMS ITSM Tjmax VTM/
ITM
VT(TO) rT IDRM
IRRM
(dVD/dt)cr IGT VGT (diT/dt)cr tq i2·t Rth(j-c)
V A(°C) A kA °C V/A V mΩ mA V/µs mA V A/µs µs kA2·s °C/W
T371-200 100-1800 200(102)
310(85)
314 6.0 125 1.45/628 1.027 0.641 70 200-1000 250 2.5 1000 125-500 170 0.085
T371-250 2200-2600 250(94) 392 7.0 125 1.54/785 0.930 0.730 30 200-1000 200 2.5 250 250 180 0.090
T371-320 2000-2200 320(82) 502 8.0 125 1.67/1004 1.050 0.680 30 200-1000 200 2.5 320 200 320 0.085

Power Thyristors T471 (200A – 320A)

Thyristors T471
Series Price Voltage
VDRM, VRRM
Average forward current
IT(AV) (TC, ºC)
Voltage code
VRRM / 100
Weight Package type Heatsink Data sheet
T471-200 on request
+
Add
4000 - 4400V 200A (80ºC) 40 - 44 440 g ST7 O181, O281, OM105 Datasheet
T471-250 on request
+
Add
100 - 1800V 250A (94ºC)
307A (85ºC)
1 - 18 440 g ST7 (T.SB2) O181, O281, OM105 Datasheet
T471-320 on request
+
Add
100 - 1800V 320A (84ºC) 1 - 18 440 g ST7 (T.SB2) O181, O281, OM105 Datasheet

Detailed specifications of Power Thyristors T471

Series VDRM
VRRM
IT(AV)
(TC)
ITRMS ITSM Tjmax VTM/
ITM
VT(TO) rT IDRM
IRRM
(dVD/dt)cr IGT VGT (diT/dt)cr tq i2·t Rth(j-c)
V A(°C) A kA °C V/A V mΩ mA V/µs mA V A/µs µs kA2·s °C/W
T471-200 4000-4400 200(80) 214 4.0 125 2.46/628 1.850 1.240 50 500-1000 200 2.5 200 320-400 80 0.090
T471-250 100-1800 250(94)
307(85)
393 6.5 125 1.55/785 1.036 0.653 70 200-1000 250 2.5 1000 125-500 210 0.085
T471-320 100-1800 320(84) 502 7.0 125 1.60/1005 1.006 0.612 70 200-1000 250 2.5 1000 125-500 230 0.085

Part Numbering Guide for High Power Stud Thyristors:

T 161 200 16 4 2
T Thyristor, brand AS ENERGITM
161 Thyristor type (stud type).
200 Average current in open state IT(AV), Amp.
16 Voltage class VRRM / 100  (Nominal voltage – 1600 V).
4 Parameter of the critical rate of rise of off-state voltage (dVD/dt)crit:
Alpha-numeric coding P2 K2 Е2 A2 T1 P1 M1
Digital coding 4 5 6 7 8 9
Value, V/µs 200 320 500 1000 1600 2000 2500
2 Parameter of turn-off time tq:
Alpha-numeric coding 0 B2 C2 E2 H2 K2 М2 P2 T2 X2 A3
Digital coding 0 1 2 3 4
Value, V/µs not standardized 800 630 500 400 320 250 200 160 125 100

Technical Passport for Power Stud Thyristors (sample):

When supplying thyristors, if necessary, we provide technical passport and certificate of conformity.

  • Technical Passport
  • Technical Passport
  • Technical Passport

High Power Semiconductors AS ENERGITM

Our company is engaged in the manufacturer and sale of wide range of power semiconductors (power thyristors, modules, rectifier diodes, rotor and welding diodes, triacs etc.) currents up to 15000A and voltages to 9000V, and air and water heatsinks to them. You can buy semiconductors in any volumes, and when ordering large lots, the price will be lower.
We have earned the trust of customers and supply products all over the world.

To purchase High Power Thyristors, Diodes, Modules send an email request to:

[email protected]

And we will provide you a commercial offer for delivery.



Photo of High Power Stud Type Thyristors:

  • Stud Thyristors
  • Stud Thyristors
  • Stud Thyristors
  • Stud Thyristors
  • Stud Thyristors
  • Stud Thyristors

Installation recommendations for power stud mount thyristors:

Assembling stud thyristor with a heatsink

The reliability of heat transfer and electrical contact between the mating surfaces of the thyristor and the cooler over the entire temperature range is ensured by appropriate torque.

Before assembly you should perform visual inspection (1) contact surfaces for mechanical damages and wipe (2), soaked with alcohol (toluene, gasoline, acetone).

To improve the parameters of heat transfer it is recommended to lubricate (3) a thin layer of silicone thermal conductive paste before the assembly, which is not a mandatory condition for installation.

After installation, the fasteners (nuts and washers) must be additionally secured against corrosion.


Tips and recommendations for power thyristors:

The power thyristors should not be operated for long periods of time at their limit load for all parameters. In this case, the safety factor is determined by the required degree of reliability of the device.

Replace a failed power thyristor with a thyristor that matches the parameters of the one being replaced.

Supercooling must be provided when operating in an environment with an elevated ambient temperature.

Periodic cleaning of power thyristors and coolers to remove dust and contaminants is recommended to ensure proper heat dissipation.

Inductive current dividers (often twisted toroidal wire) should be used to equalize currents between power thyristors connected in parallel. The most popular connection methods are closed circuit, common coil circuit, or power thyristor. The efficiency of current dividers in this case is determined by the cross section of the magnetic wire.

Prevention of voltage unbalance when power thyristors are connected in series is achieved by using shunt resistors connected in parallel with each thyristor. Voltage equalization in transient conditions is provided by connecting capacitors in parallel to each thyristor.

Device under voltage

It is strictly forbidden to touch power thyristors under high voltage during operation.

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