Power Rectifier Diode Module MDC500-18 (500A 1800V), MDC500-18-408F3

Average forward current, ITAV/IFAV (Tcase) 500A (100ºC)
Voltage, VRRM/VDRM 600 – 1800V
Voltage code, VRRM / 100 6 – 18
MDC500-18 on request
Weight 2300 g
Dimensions L×B×H
Datasheet Datasheet

Dual diode rectifier module MDC 500-18 AS ENERGITM in an international standard package, 500A 1800V.

The diode modules MDC500-18-408F3 are characterized by high electrical and thermal cycling capability, meaning high reliability and long lifetime in intensive operation modes. The diode modules are housed in a industry-standard housing making it easy to integrate the device into existing equipment.

The two-position modules have different switching circuits (electrical circuit diagrams): МDChalf-bridge; МDKscheme with common cathode; МDAscheme with common anode.

Series (ratings) of diode modules: MDC500-6 (500A 600V), MDC500-7 (500A 700V), MDC500-8 (500A 800V), MDC500-9 (500A 900V), MDC500-10 (500A 1000V), MDC500-12 (500A 1200V), MDC500-14 (500A 1400V), MDC500-16 (500A 1600V), MDC500-18 (500A 1800V).

The main (power) terminals are on the top of the case and are marked as 123 (common anode-cathode, cathode, anode).

Dual diode modules MDC series are used in various power equipment - power and control units, power regulators, AC regulators, DC motors control, AC motor soft starters, converters, controllers of blast furnaces or chemical processes, welding equipment, and as rectifiers for AC converters.

Our modules are offered in several dual and single device topologies for almost all phase control or rectifier applications.

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

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The final price for thyristor / diode modules depends on the class, quantity, delivery terms, manufacturer, country of origin and form of payment.

General specifications of diode-diode module MDC500-18, MDC500-18-408F3:

Diode module specifications MDC500-18
Maximum allowable average forward current (Case temperature) ITAV/IFAV (Tcase) 500 A (100ºC)
Repetitive pulsed reverse voltage; Repetitive pulsed closed state voltage VRRM/VDRM 1800 V
Surge on-state current ITSM/IFSM 16 A
Safety factor I2t 1280 kA2·s
Threshold voltage VT(TO) 0.75 V
Repetitive pulse current when closed; repetitive pulse return current IDRM/IRRM 40 mA
Open pulse voltage VTM 1.45 V
Open pulse current ITM 1500 A
On-state slope resistance rT 0.3 mΩ
Junction temperature Tvj max 125 ºC
Thermal resistance, junction to case Rth(j-c) 0.090 ºC/W
Design (switches) - dual component
Type (circuit diagram) - diode-diode
Weight W 2300 g
Package (Housing) type 408F3
Dimensions, mm L×B×H 135x76x62
Datasheet PDF Datasheet

Part numbering guide for diode–diode modules MDC:

MD C 500 18 408F3
MD Diode module, brand AS ENERGITM
C Circuit topology: common anode-cathode.
500 Rated current (ITAV), A.
18 Voltage class (VRRM/100).
408F3 Package (housing) type.

Dimensions of diode module MDC500-18, MDC500-18-408F3:


Circuit diagram of diode modules MDC:


1 (АК), 2 (К), 3 (А) – main (power) terminals.

Diode module MDC500-18 datasheet:

PDFDownload pdf datasheet for diode MDC500-18

Technical Passport for Diode Modules MDC (sample):

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

  • Technical Passport
  • Technical Passport
  • Technical Passport

High Power Semiconductors by AS ENERGI

The company manufactures a wide range of power semiconductors (thyristors, diodes, modules).
You can buy thyristor modules 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 Power Modules, Diodes, 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.

Photo Gallery

The photo gallery shows many different semiconductor devices, semiconductor chips and SCRs produced by AS ENERGITM, examples of test reports.

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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