Fast Switching Thyristor 125 amp, TFI361-125 (600 – 1200V), Stud Type

Average forward current, ITAV 125A
Voltage, VDRM/VRRM 600–1200V
Voltage code, VRRM / 100 6 – 12
TFI361-125 on request
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Package
Thread
ST6
M20x1.5 mm
Weight 240 g
Datasheet Datasheet

Fast Switching Thyristor TFI361-125 AS ENERGITM in stud is a fast switching semiconductor device, designed for converting and control DC and AC currents up to 125A with frequency up to 10kHz in circuits with voltages up to 600V – 1200V (voltage class from 6 to 12). Thyristor package type – ST6, mounting standard thread M20x1.5, (on request, UNF thread 3/4"-16UNF-2A), weight – 240 g.

Fast switching (pulse) thyristors are devices with reduced tq, trr, Qrr values and with a higher value (diT/dt)cr (up to 2500 A/µs) designed to operate at higher frequencies modes (up to 10kHz). The thyristor parameters of VTM, tq, Qrr are interconnected, so a decrease in the value of tq and Qrr leads to an increase in VTM. Fast switching thyristors are characterized with a very low turn-off time that sets them apart from the standard models. They are used in welding, induction heating and melting, electric transportation, AC drives, UPS, and other systems requiring short turn-on and turn-off times. The thyristors have an industry-standard ceramic sealed housing isolating the functional part and the semiconductor element from mechanical impacts and environment.

Fast switching thyristors are supplied in stud design. 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). This thyristor can be an alternative product, replacement, analog, equivalent for other types fast switching thyristors 100A, 110A, 120A, 125 amp in a stud housing.

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.

Specifications and parameters, datasheets PDF, sample technical passport, dimensions, outline drawings, case diagrams thyristors, recommended coolers are listed below.

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

Fast stud thyristor ratings: TFI361-125-6 (125A 600V), TFI361-125-7 (125A 700V), TFI361-125-8 (125A 800V), TFI361-125-9 (125A 900V), TFI361-125-10 (125A 1000V), TFI361-125-11 (125A 1100V), TFI361-125-12 (125A 1200V).

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


General specifications of stud fast switching thyristors TFI361-125:

Fast switching thyristor specifications TFI361-125
Maximum allowable average forward current (Case temperature) IT(AV) (Tcase) 129 A (80°C)
Repetitive peak off-state voltage; Repetitive peak reverse voltage VDRM/VRRM 600-1200 V
RMS on-state current ITRMS 196 A
Surge on-state current ITSM 2.6 kA
Safety factor I2t 100 kA2·s
Peak on-state voltage, max VTM 2.34 V
Peak on-state current ITM 392 A
On-state threshold voltage, max VT(TO) 1.38 V
On-state slope resistance, max rT 2.5 mΩ
Turn-off time, max tq 20-25 µs
Repetitive peak off-state and Repetitive peak reverse currents, max IDRM/IRRM 50 mA
Critical rate of rise of off-state voltage, min (dVD/dt)cr 1000 V/µs
Gate trigger direct voltage, max VGT 2.5 V
Gate trigger direct current, max IGT 300 mA
Critical rate of rise of on-state current (diT/dt)cr 800 A/µs
Temperature of p-n junction, max Tvj max 125 ºC
Thermal resistance, junction to case, max Rth(j-c) 0.24 ºC/W
Mounting torque Md 20-30 N·m
Weight, approx. W 240 g
Package type, Thread Outline ST6
M20x1.5
Recommended heatsinks Heatsinks O171, O271, O371, O471, OM101
Datasheet PDF PDF

Part Numbering Guide for Fast Switching Thyristors TFI361-125:

TFI 361 125 12 7 5 4
TFI Fast Switching Thyristor (Fast Impulse Thyristor), brand AS ENERGITM
361 Thyristor type (stud type).
125 Average current in open state IT(AV), Amp.
12 Voltage class VRRM / 100  (Nominal voltage – 1200 V).
7 Parameter of the critical rate of rise of off-state voltage (dVD/dt)cr:
Alpha-numeric coding 0 P3 E3 A3 P2 K2 E2 A2 T1 P1 M1
Digital coding 0 1 2 3 4 5 6 7 8 9
Value, V/µs not standardized 20 50 100 200 320 500 1000 1600 2000 2500
5 Parameter of turn-off time tq:
Alpha-numeric coding 0 C3 E3 H3 K3 M3 P3 T3 X3 A4 B4 C4 E4
Digital coding 0 1 2 3 4 5 6 7 8 9
Value, µs not standardized 63 50 40 32 25 20 16 12.5 10 8 6.3 5
4 Parameter of turn-on time tgt:
Alpha-numeric coding 0 T3 A4 B4 C4 H4 K4 M4 P4 T4 X4 A5 C5
Digital coding 0 1 2 3 4 5 6 7 8
Value, µs not standardized 16 10 8 6.3 4 3.2 2.5 2.0 1.6 1.25 1.0 0.63

Polarity (anode, cathode, gate) and dimensions of disc fast switching thyristor TFI361-125:

Thyristor polarity Dimensions

Fast thyristor TFI361-125 datasheet:

PDFDownload pdf datasheet for thyristors TFI361-125


Technical Passport for 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.

For questions regarding the acquisition of Power Thyristors, Diodes, Modules 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.


Heat sinks for power stud fast switching thyristors:

Heat sinks (radiators) are used for cooling of power semiconductor devices in stud design.

Heat sinks of coolers are made of aluminum radiator profiles and do not require additional protective coating when used in various climatic conditions.

See for more information about coolers "Air-heatsink" and "Water-heatsink".


Photo of High Power Stud Type Fast Switching Thyristors:

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  • Stud Fast Switching Thyristors
  • Stud Fast Switching Thyristors
  • Stud Fast Switching Thyristors
  • Stud Fast Switching Thyristors
  • Stud Fast Switching Thyristors

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