Diodes Rectifiers
1PCS rectifier module MDK400A MDK300A MDK250A MDK200A 1600V
Forward average current IF(AV)
Reverse repetitive peak voltage VRRM
On-state peak voltage/current VFM
Reverse repetitive peak current IRRM
Forward current effective value IF (RMS)
Maximum rated junction temperature Tjm
Insulation voltage Viso
Appearance code
A
V
V
A
mA
A
℃
V(AC)
MDK25A
25
600-3000
0.9
80
8
41
150
2500
101F
MDK55A
55
600-3000
0.9
170
8
86
150
2500
101F/201F
MDK70A
70
600-3000
0.9
270
8
110
150
2500
201F/201F-1
MDK90A
90
600-3000
0.9
270
8
141
150
2500
201F/201F-1
MDK110A
110
600-3000
1.1
330
8
173
150
2500
201F/201F-1
MDK130A
130
600-3000
1.1
410
12
212
150
2500
301F
MDK160A
160
600-3000
1.1
480
12
251
150
2500
301F
MDK200A
200
600-3000
1.2
600
12
314
150
2500
301F
MDK250A
250
600-3000
1.2
750
20
393
150
2500
401F-1/401F-2
MDK300A
300
600-3000
1.2
900
20
471
150
2500
401F-1/401F-2/401F
MDK400A
400
600-5000
1.3
1000
40
640
150
2500
401F/401C
MDK500A
500
600-5000
1.3
1500
40
785
150
2500
401F/401C
MDK600A
600
600-5000
1.5
1800
40
920
150
2500
501F/501C
MDK80
0
A
800
600-5000
1.5
2400
40
1256
150
2500
501F/501C
MDK1000A
1000
600-5000
1.5
3000
40
1570
150
2500
601F/502F
MDK1500A
1500
600-5000
1.5
4500
40
2355
150
2500
701F
MDK2000A
2000
600-5000
1.4
5000
50
3140
150
2500
701F
MDK3000A
3000
600-5000
1.4
5000
60
4710
150
2500
702F
Note: The current used when forming a single-phase rectifier bridge is within 90%, and the current used when forming a three-phase rectifier bridge is 130%; the temperature of the contact surface between the module and the radiator should be 70°C, and the radiator needs to be grounded.
Installation notes:
1. Considering that the voltage of the grid fluctuates and the load is generally several times larger than its rated current at startup, and the thyristor chip has poor resistance to current shocks, it is recommended that you leave an appropriate margin when selecting module current specifications.
2. The working junction temperature of the module die: the thyristor is -40℃∽125℃; the ambient temperature must not be higher than 40℃; the ambient humidity is less than 86%.
3. The use environment should be free of severe vibration and impact, and the environmental medium should be free of impurities and atmosphere that corrode metal and damage insulation.
4. Since the thyristor module is an insulated type (that is, the insulation withstand voltage between the module terminals and the copper base plate is greater than 2.5KV effective value), multiple modules can be installed on the same radiator, and a grounding wire is required.
5. The installation surface of the radiator should be flat and smooth, without scratches, bumps or debris. The surface finish of the heat sink should be less than 10μm.
When the module is installed on the heat sink, a thin layer of thermal grease should be applied between their contact surfaces. Before applying grease, use fine sandpaper to remove the oxide layer on the contact surface of the radiator, and then wipe the surface clean with absolute ethanol to ensure good contact and reduce thermal resistance.
When fastening the module to the surface of the radiator, use M5 or M6 screws and spring washers, and tighten the screws with a of 4NM
The connection with the main electrode of the module should be made of copper bars and have a smooth and flat contact surface to ensure good contact. After the module has been working for 3 hours, each screw must be tightened again.