Diode module MD3-630-18-A2

Average forward current, ITAV/IFAV 630A
Voltage, VRRM/VDRM 1000 – 1800V
Voltage code, VRRM / 100 10 – 18
MD3-630-18-A2 on request
Weight 1.5 kg
Dimensions LxBxH
Datasheet Datasheet

Power rectifier diode module MD3-630-18-A2 AS ENERGITM in an international standard package, 630A 1800V.

Used to convert DC and AC currents up to 630 ampere, with a frequency of up to 500 Hz on circuits with voltages up to 1800 volt (18 class).

Diode modules MD3-630-18-A2 are in a standard package A2: base dimensions 60x124 mm, housing height – 52 mm, weight – 1.5 kg. Two-position module is a monolithic construction of two semiconductor diodes: type diode-diode. Module connection diagram MD3-630-18-A2 – half-bridge.

Series (ratings) of diode modules: MD3-630-10-A2 (630A 1000V), MD3-630-12-A2 (630A 1200V), MD3-630-14-A2 (630A 1400V), MD3-630-16-A2 (630A 1600V), MD3-630-18-A2 (630A 1800V).

Modules connection diagram MD3-630-18-A2
  • Main terminals are at the top of the case and are numbered 1, 2, 3;

High thermal cyclic resistance and reliable operation of low-frequency diode modules MD3-630-18-A2 when switching high currents is achieved due to their design features and stable parameters of galvanic isolation.

The MD3-630-18-A2 diode modules have a clamp-on design that provides easy mounting and good contact with the cooler for heat dissipation. Several modules can be mounted on one cooler without additional insulation, which significantly reduces the overall dimensions of the assembly. Between the module and the heat sink (heat sink) it is recommended to use a thermally conductive substrate lubricated with thermal paste.

The two-position modules have different wiring diagrams (electrical circuit diagrams): MD3half-bridge; MD4common cathode circuit; MD5common anode circuit.

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 MD3-630-18-A2:

Diode module specifications MD3-630-18-A2
Maximum allowable average forward current (Case temperature) IF(AV) (TC) 630 А (103ºC)
Repetitive pulsed reverse voltage; Repetitive pulsed closed state voltage VRRM/VDRM 1800 V
Surge on-state current IFSM 19.0 kA
Peak on-state voltage VFM 1.40 V
Peak on-state current IFM 1978 A
Threshold voltage V(TO) 0.78 V
On-state slope resistance rT 0.230 mΩ
Junction temperature Tj max 125 ºC
Maximum case operating temperature Tc max 125 ºC
Thermal resistance, junction to case Rth(j-c) 0.0650 ºC/W
Electrical insulation strength VISOL 3.00 kV
Design (switches) - dual component
Type (circuit diagram) - diode-diode
Connection diagram - half-bridge
Weight W 1.5 kg
Package - A2
Dimensions, mm L×B×H 124x60x52 mm
Datasheet PDF PDF

Part numbering guide for diode–diode modules MD3-630-18-A2:

MD 3 630 18 A2 N
MD Diode module, brand AS ENERGITM
3 Connection diagram:
3 – half-bridge;
4 – common cathode circuit;
5 – common anode circuit.
630 Rated current IF(AV), A.
18 Voltage class VRRM / 100   (Nominal voltage – 1800 V).
A2 Housing type.
N Ambient conditions: N – Normal.

Dimensions of power diode modules MD3-630-18-A2:

Dimensions of diode modules MD3-630-18-A2

Package A2

Diode module connection diagram MD3-630-18-A2:

Diode module connection diagram MD3-630-18-A2

1, 2, 3 – main terminals.

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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