Phase Control Thyristor KP500A-(36...42)

Average forward current, IT(AV) (TC, ºC) 540А (70ºC)
Voltage, VDRM/VRRM 3600-4200 V
Voltage code, VRRM / 100 36 – 42
KP500A-(36...42) on request
Dimensions ØDxØdxH 58x34x26 mm
Weight 0.26 kg
Datasheet PDF

Phase control thyristors KP500A-(36...42) AS ENERGITM are general purpose power disc thyristors, also known as Silicon Controlled Rectifier (SCR). They are designed to convert and control DC and AC currents up to 500A with frequency up to 500Hz in circuits with voltages up to 3600V – 4200V (voltage class from 36 to 42). Thyristor dimensions ØDxØdxH – 58x34x26 mm (outer case diameter X contact surface diameter X case height), weight – 0.26 kg.

Thyristor ratings: KP500A 3600V, KP500A 3800V, KP500A 4000V, KP500A 4200V.

The anode and cathode of the thyristor (polarity) are determined by the symbol on the case.

For cooling during the operation of power thyristors they are mounted with coolers (heat sinks). Depending on the amount of heat generated and the working conditions of the semiconductors, either natural air flow cooling or forced cooling can be used.

When assembling, the necessary clamping force Fm specific for each type of thyristor package (indicated in the parameter table) must be provided.

Thyristors can be manufactured for use in temperate, cold and tropical climates. Thyristors of the disc type KP are used in various power converters (e.g. melting furnaces) where fast switching and control of currents is necessary.

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

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

Read more

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

For questions regarding the acquisition of High Power Thyristors 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.

General specifications of phase control thyristors KP500A-(36...42):

Thyristors specifications KP500A-(36...42)
Maximum allowable average forward current (Case temperature) IT(AV)/(TC) 540 A (70ºC)
Repetitive pulsed closed state voltage; repetitive pulsed reverse voltage VDRM/VRRM 3600-4200 V
Surge on-state current ITSM 6.5 kA
Safety factor I2t 211 kA2·s
Critical rate of rise of off-state voltage dv/dt 1000 V/µs
Critical rate of rise of on-state current di/dt 100 A/µs
Turn-off time tq 600 µs
Temperature of p-n junction Tvj max 125 ºC
Thermal resistance, junction to case Rth(j-c) 0.045 ºC/W
Clamping force Fm ±10% 15 kN
Weight W 0.26 kg
Dimensions ØDxØdxH 58x34x26
Datasheet PDF PDF

Part numbering guide for phase control thyristors KP500A 4200V:

KP 500A 4200V
KP Thyristor type: Phase control thyristor, brand AS ENERGITM
500A Average forward current in open state IT(AV), A.
4200V Nominal voltage, V.

Polarity (anode, cathode, gate) and dimensions of disc thyristor KP500A-(36...42):

Thyristor polarity Thyristor dimensions

Thyristors KP500A-(36...42) datasheet:

PDFDownload datasheet for thyristors KP500A-(36...42)

High Power Semiconductors by AS ENERGI

Our company is engaged in the manufacturer and sale of power semiconductors (power thyristors, diodes, modules).
You can buy thyristors from us 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 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.

Heat sinks for power disc thyristors:

Heat sinks (radiators) are used for single- and double-sided cooling of power semiconductor devices in disc 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 heatsinks: "Air-cooled heatsinks O series for disc devices", "Air heatsink SF series", "Water heatsink SS series".

Photo of Phase Control Thyristor SCR:

icon Why choose AS ENERGITM

  • Own production facilities, including semiconductor silicon chips production
  • European brand - 100% quality, favorable price, short production terms
  • Over 20 years of experience in the semiconductor industry
  • Clients from more than 50 countries trust us
  • 20000 items in the product line for currents from 10A to 15000A, voltages from 100V to 9000V
  • We produce analogues of other manufacturers' products
  • Guaranteed certified quality, warranty period of operation - 2 years


Quality Warranty

Our products are certified and correspond to international standards.
Our company provides a quality guarantee for products of 2 years.
We provide certificates of conformity, reliability reports, data sheets and technical passports at the request of the customer.


Each product is tested for the main parameters, and Test reports of the parameters for each product are provided.

Test Report

Geography of partnership

AS ENERGITM company manufactures and supplies power semiconductors to more than 50 countries around the world.


Logistics and Delivery

We deliver our products all over the world with the services of logistics companies: DHL, TNT, UPS, EMS, Fedex, Aramex.
Products can be delivered by any means of transport: air, sea, rail and road.


AS ENERGITM Semiconductors Manufacturing

Our products range includes rectifier diodes, phase control thyristors in disc and stud design, avalanche diodes and thyristors, fast switching, high frequency thyristors, fast recovery, welding and rotor diodes, triacs, bridge rectifiers, power modules (thyristor, diode, thyristor-diode, IGBT), and air and water heatsinks to them.

Power diodes and thyristors are produced for currents from 10A to 15000A, voltage range from 100V to 9000V.
Power diode and thyristor modules are produced from 25A and up to 1250A, voltage range 400V - 4400V.
The range of power semiconductors also includes equivalent, replacement, analogue and alternative semiconductor devices of global manufacturers.

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