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AS ENERGIHigh Frequency Thyristor KA 300A – 2500A
Ultra Fast High Frequency Thyristor KA series AS ENERGITM in disc design is a press pack type ultra fast turn-off high frequency semiconductor device. High frequency thyristors meet requirements, such as increased di/dt resistance, low switching losses, short turn-on and turn-off time. Regulating and converting DC and AC currents to 1200A at frequency range is up to 20kHz in circuits with voltages to 2400V (depending on series).
The anode and cathode of the high frequency thyristor (polarity) are determined by the symbol on the case. A special feature of high frequency thyristors is their highly branched control electrode that ensures short propagation time of the onstate.
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.
High frequency thyristors can be manufactured for use in temperate, cold and tropical climates. Fast thyristors of the disc type KA are used in various power converters (e.g. melting furnaces) where fast switching and control of currents is necessary.
Series (ratings) thyristors are: KA300A, KA400A, KA500A, KA600A, KA700A, KA800A, KA900A, KA1000A, KA1100A, KA1200A, KA1400A, KA1500A, KA1700A, KA2000A, KA2500A.
Specifications and parameters, datasheets PDF, dimensions, drawings, case diagrams thyristors, recommended coolers are listed below.
Our company provides a quality guarantee for fast high frquency thyristors KA of 2 years from the date of purchase. When supplying thyristors, if necessary, we provide technical passport and certificate of conformity.
The final price for high frequency disc thyristors KA depends on the 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:
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.
Photo Gallery
The photo gallery shows many different semiconductor devices, semiconductor chips and SCRs produced by AS ENERGITM, examples of test reports.
General specifications of utra fast thyristors KA
| Series | IT(AV) (TC=70°C) |
VDRM VRRM |
ITSM | I2t | dv/dt | di/dt | tq | Tvj max | Rth(j-c) | Fm ±10% |
W | Outline | Dimensions ØDxØdxH |
Data-sheet |
| A | V | kA | kA2·s | V/µs | A/µs | µs | ºC | ºC/W | kN | kg | mm | |||
| KA300 | ||||||||||||||
| KA300-(8...14) | 300 | 800-1400 | 5.8 | 168 | 200 | 1500 | 12-24 | 125 | 0.08 | 5 | 0.10 | A-1 | 42x25x15 |  |
| KA400 | ||||||||||||||
| KA400-(8...14) | 400 | 800-1400 | 5.68 | 168 | 200 | 1500 | 12-24 | 125 | 0.08 | 5 | 0.10 | A-1 | 42x25x15 | |
| KA500 | ||||||||||||||
| KA500-(8...12) | 500 | 800-1200 | 5.4 | 146 | 200 | 1500 | 10-20 | 125 | 0.08 | 5 | 0.10 | A-1 | 42x25x15 | |
| KA600 | ||||||||||||||
| KA600-(8...14) | 600 | 800-1400 | 9.3 | 432 | 200 | 1500 | 12-24 | 125 | 0.045 | 15 | 0.26 | A-2 | 58x34x26 | |
| KA700 | ||||||||||||||
| KA700-(8...12) | 700 | 800-1200 | 8.9 | 396 | 200 | 1500 | 10-20 | 125 | 0.045 | 15 | 0.26 | A-2 | 58x34x26 | |
| KA800 | ||||||||||||||
| KA800-(6...9) | 800 | 600-900 | 8.0 | 320 | 200 | 1500 | 5-7 | 125 | 0.045 | 15 | 0.26 | A-2 | 58x34x26 | |
| KA900 | ||||||||||||||
| KA900-(12...16) | 900 | 1200-1600 | 10.0 | 500 | 200 | 1500 | 18-36 | 125 | 0.041 | 18 | 0.30 | A-3 | 66x42x26 | |
| KA1000 | ||||||||||||||
| KA1000-(8...14) | 1000 | 800-1400 | 12.0 | 720 | 200 | 1500 | 15-28 | 125 | 0.035 | 20 | 0.37 | A-4 | 69x45x26 | |
| KA1000-(12...16) | 1000 | 1200-1600 | 11.0 | 605 | 200 | 1500 | 18-36 | 125 | 0.035 | 20 | 0.37 | A-4 | 69x45x26 | |
| KA1100 | ||||||||||||||
| KA1100-(8...18) | 1100 | 800-1200 | 11.0 | 605 | 200 | 1500 | 10-20 | 125 | 0.035 | 20 | 0.37 | A-4 | 69x45x26 | |
| KA1200 | ||||||||||||||
| KA1200-(6...9) | 1200 | 600-900 | 9.6 | 461 | 200 | 1500 | 6-15 | 125 | 0.035 | 20 | 0.37 | A-4 | 69x45x26 | |
| KA1200-(8...14) | 1200 | 800-1400 | 16.3 | 1328 | 200 | 1500 | 15-28 | 125 | 0.020 | 22 | 0.47 | A-5 | 74x47x26 | |
| KA1400 | ||||||||||||||
| KA1400-(8...12) | 1400 | 800-1200 | 15.0 | 1125 | 200 | 1500 | 10-20 | 125 | 0.020 | 22 | 0.47 | A-5 | 74x47x26 | |
| KA1500 | ||||||||||||||
| KA1500-(8...14) | 1500 | 800-1400 | 18.0 | 1620 | 200 | 1500 | 15-28 | 125 | 0.018 | 30 | 0.60 | A-6 | 85x55x26 | |
| KA1700 | ||||||||||||||
| KA1700-(8...12) | 1700 | 800-1200 | 17.0 | 1445 | 200 | 1500 | 10-20 | 125 | 0.018 | 30 | 0.60 | A-6 | 85x55x26 | |
| KA2000 | ||||||||||||||
| KA2000-(10...12) | 2000 | 1000-1200 | 23.0 | 2645 | 1000 | 1200 | 8-15 | 125 | 0.0125 | 45 | 1.0 | A-8 | 100x63x26 | |
| KA2500 | ||||||||||||||
| KA2500-(10...12) | 2500 | 1000-1200 | 23.0 | 2645 | 1000 | 1200 | 8-15 | 125 | 0.01 | 56 | 1.44 | A-9 | 110x73x26 | |
Part numbering guide for fast high frequency thyristors KA:
| KA | 2500A | – | 1200V |
| KA | – | Thyristor type: Ultra Fast High Frequency Thyristor,  AS ENERGITM |
| 2500A | – | Average forward current in open state IT(AV), A. |
| 1200V | – | Nominal voltage, V. |
Types of KA series thyristor packages, dimensions, drawing
 42x25x15 |
 58x34x26 |
 66x42x26 |
 69x45x26 |
| KA300, KA400 KA500 |
KA600, KA700 KA800 |
KA900 | KA1000, KA1100 KA1200 |
 74x47x26 |
 85x55x26 |
 100x63x26 |
 110x73x26 |
| KA1200, KA1400 | KA1500, KA1700 | KA2000 | KA2500 |
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:
And we will provide you a commercial offer for delivery.
For a large number, we will provide an individual price!!!
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 disc power thyristors:
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.
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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