Rectifier Diode D443-630 (4400 – 5200V)

Average forward current, IFAV 630A
Voltage, VRRM 4400–5200V
Voltage code, VRRM / 100 44 – 52
D443-630 on request
Dimensions ØD×Ød×H
60x37x26 mm
Weight 280 g
Datasheet Datasheet

Rectifier Diode D443-630 AS ENERGITM is general purpose disc diode. This is a power p-n junction diode designed for converting DC and AC currents up to 630A with frequency up to 500Hz in circuits with voltages up to 4400V – 5200V (voltage class from 44 to 52). Diode dimensions ØDxØdxH – 60x37x26 mm (outer case diameter X contact surface diameter X case height), weight – 280 g.

The anode and cathode of the diode (polarity) are determined by the symbol on the case. Diodes are in a industry-standard ceramic press pack disc (capsule, tablet) housing. This rectifier diode can be an alternative product, replacement, analog, equivalent for other types diodes 550A, 580A, 590A, 600A, 630 amp in a disk type package.

For cooling during the operation of power semiconductor diodes 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 diode case (indicated in the parameter table) must be provided.

Semiconductor diodes disc type are used in power equipment – power and control units, power regulators, converters (e.g. melting furnaces), controllers where fast switching and control of currents is necessary.

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

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

Diode ratings: D443-630-44 (630A 4400V), D443-630-46 (630A 4600V), D443-630-48 (630A 4800V), D443-630-50 (630A 5000V), D443-630-52 (630A 5200V).

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The final price for rectifier disc diodes depends on the voltage class, quantity, delivery terms, manufacturer, country of origin and form of payment.

General specifications of rectifier diodes D443-630:

Diode specifications D443-630
Maximum allowable average forward current (Case temperature) IF(AV) (Tcase) 740 A (85ºC)
Repetitive peak reverse voltage VRRM 4400-5200 V
RMS forward current IFRMS 1160 A
Surge non-repetitive current IFSM 6.0 kA
Safety factor I2t 180 kA2·s
Peak forward voltage, max VFM 2.50 V
Peak current IFM 1980 A
On-state threshold voltage, max VF(TO) 0.90 V
On-state slope resistance, max rT 0.84 mΩ
Repetitive peak reverse currents, max IRRM 50 mA
Temperature of p-n junction, max Tvj max 150 ºC
Thermal resistance, junction to case, max Rth(j-c) 0.036 ºC/W
Clamping force Fm 15 kN
Weight, approx. W 280 g
Package type, Dimensions ØDxØdxH PD43
60x37x26 mm
Recommended heatsinks Heatsinks O143, O243, O343, OM103, OM104
Datasheet PDF PDF

Part Numbering Guide for Rectifier Diode D443-630:

D 443 630 52
D Diode, brand AS ENERGITM
443 Diode type (disc type).
630 Average forvard current in open state IF(AV), Amp.
52 Voltage class VRRM / 100  (Nominal voltage – 5200 V).

Polarity (anode, cathode) and dimensions of disc diode D443-630:

Diode polarity Dimensions

Diode D443-630 datasheet:

PDFDownload pdf datasheet for diodes D443-630

Technical Passport for Rectifier Diodes (sample):

When supplying diodes, 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 cooperate with companies from neighboring countries.

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

Heat sinks for power disc diodes:

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 coolers "Air-heatsink" and "Water-heatsink".

Photo of Power Rectifier Disc Type Diodes:

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