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VRSM VRRM Type
VDSM VDRM
VV
1300 1200 MCC 255-12io1 MCD 255-12io1
1500 1400 MCC 255-14io1 MCD 255-14io1
1700 1600 MCC 255-16io1 MCD 255-16io1
1900 1800 MCC 255-18io1 MCD 255-18io1
Symbol Test Conditions Maximum Ratings
ITRMS, IFRMS TVJ = TVJM 450 A
ITAVM, IFAVM TC = 85°C; 180° sine 250 A
ITSM, IFSM TVJ = 45°C; t = 10 ms (50 Hz) 9000 A
VR = 0 t = 8.3 ms (60 Hz) 9600 A
TVJ = TVJM t = 10 ms (50 Hz) 7800 A
VR = 0 t = 8.3 ms (60 Hz) 8600 A
òi2dt TVJ = 45°C t = 10 ms (50 Hz) 405 000 A2s
VR = 0 t = 8.3 ms (60 Hz) 382 000 A2s
TVJ = TVJM t = 10 ms (50 Hz) 304 000 A2s
VR = 0 t = 8.3 ms (60 Hz) 307 000 A2s
(di/dt)cr TVJ = TVJM repetitive, IT = 860 A 100 A/ms
f =50 Hz, tP =200 ms
VD = 2/3 VDRM
IG = 1 A, non repetitive, IT = ITAVM 500 A/ms
diG/dt = 1 A/ms
(dv/dt)cr TVJ = TVJM; VDR = 2/3 VDRM 1000 V/ms
RGK = ¥; method 1 (linear voltage rise)
PGM TVJ = TVJM tP = 30 ms 120 W
IT = ITAVM tP = 500 ms60W
PGAV 20 W
VRGM 10 V
TVJ -40...+130 °C
TVJM 130 °C
Tstg -40...+125 °C
VISOL 50/60 Hz, RMS t = 1 min 3000 V~
IISOL £ 1 mA t = 1 s 3600 V~
MdMounting torque (M6) 4.5-7/40-62 Nm/lb.in.
Terminal connection torque (M8) 11-13/97-115 Nm/lb.in.
Weight Typical including screws 750 g
Features
●International standard package
●Direct copper bonded Al2O3-ceramic
with copper base plate
●Planar passivated chips
●Isolation voltage 3600 V~
●UL registered E 72873
●Keyed gate/cathode twin pins
Applications
●Motor control, softstarter
●Power converter
●Heat and temperature control for
industrial furnaces and chemical
processes
●Lighting control
●Solid state switches
Advantages
●Simple mounting
●Improved temperature and power
cycling
●Reduced protection circuits
ITRMS = 2x 450 A
ITAVM = 2x 250 A
VRRM = 1200-1800 V
Data according to IEC 60747 and refer to a single thyristor/diode unless otherwise stated.
IXYS reserves the right to change limits, test conditions and dimensions
MCC 255
MCD 255
Thyristor Modules
Thyristor/Diode Modules
1
237654
MCD
MCC
3671542
31542
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MCC 255
MCD 255
Symbol Test Conditions Characteristic Values
IRRM, IDRM TVJ = TVJM; VR = VRRM; VD = VDRM 40 mA
VT, VFIT, IF = 600 A; TVJ = 25°C 1.36 V
VT0 For power-loss calculations only (TVJ = 130°C) 0.8 V
rT0.68 mW
VGT VD = 6 V; TVJ = 25°C2V
TVJ = -40°C3V
IGT VD = 6 V; TVJ = 25°C 150 mA
TVJ = -40°C 220 mA
VGD TVJ = TVJM;V
D = 2/3 VDRM 0.25 V
IGD TVJ = TVJM;V
D = 2/3 VDRM 10 mA
ILTVJ = 25°C; tP = 30 ms; VD = 6 V 200 mA
IG = 0.45 A; diG/dt = 0.45 A/ms
IHTVJ = 25°C; VD = 6 V; RGK = ¥150 mA
tgd TVJ = 25°C; VD = 1/2 VDRM 2ms
IG = 1 A; diG/dt = 1 A/ms
tqTVJ = TVJM; IT = 300 A, tP = 200 ms; -di/dt = 10 A/ms typ. 200 ms
VR = 100 V; dv/dt = 50 V/ms; VD = 2/3 VDRM
QSTVJ = 125°C; IT, IF = 300 A; -di/dt = 50 A/ms 760 mC
IRM 275 A
RthJC per thyristor (diode); DC current 0.140 K/W
per module other values 0.07 K/W
RthJK per thyristor (diode); DC current see Fig. 8/9 0.18 K/W
per module 0.09 K/W
dSCreeping distance on surface 12.7 mm
dACreepage distance in air 9.6 mm
aMaximum allowable acceleration 50 m/s2
Optional accessories for modules
Keyed Gate/Cathode twin plugs with wire length = 350 mm, gate = yellow, cathode = red
Type ZY 180 L (L = Left for pin pair 4/5) UL 758, style 1385,
Type ZY 180 R (R = Right for pin pair 6/7) CSA class 5851, guide 460-1-1
Dimensions in mm (1 mm = 0.0394")
MCC 255 MCD 255
Fig. 1 Gate trigger characteristics
Fig. 2 Gate trigger delay time
0.01 0.1 1 10
1
10
100
10-3 10-2 10-1 100101102
0.1
1
10
IG
VG
A
A
IG
1: IGT, TVJ = 140
°
C
2: IGT, TVJ = 25
°
C
3: IGT, TVJ = -40
°
C
µs
tgd
V
4: PGM = 20 W
5: PGM = 60 W
6: PGM = 120 W
IGD, TVJ = 140
°
C
4
2
156
Limit
typ.
TVJ = 25
°
C
3
0.01 0.1 1 10
1
10
100
10-3 10-2 10-1 100101102
0.1
1
10
IG
VG
A
A
IG
1: IGT, TVJ = 130
°
C
2: IGT, TVJ = 25
°
C
3: IGT, TVJ = -40
°
C
µs
tgd
V
4: PGM = 20 W
5: PGM = 60 W
6: PGM = 120 W
IGD, TVJ = 130
°
C
4
2
156
Limit
typ.
TVJ = 25
°
C
3
M8x20 M8x20
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I2dt
ITAVM/IFAVM
IdAVM
Ptot
W
TA
TA
TC
stms
t
0.001 0.01 0.1 1
0
2000
4000
6000
8000
10000
110
104
105
106
A2s
0 255075100125150
0
100
200
300
400
ITSM AA
°C
ITAVM
IFAVM
0 2550751001251500 100 200 300
0
100
200
300
400
500
W
Ptot
A°C
RthKA K/W
0 25 50 75 100 125 1500 200 400 600
0
500
1000
1500
2000
°C
0.1
0.2
0.3
0.4
0.6
0.8
1.0
80 % VRRM
TVJ = 45°C
50 Hz
TVJ = 130°C TVJ = 45°C
TVJ = 130°C
A
RthKA K/W
0.03
0.06
0.1
0.15
0.2
0.3
0.4
Circuit
B6
3xMCD255
3xMCC255 or
180° sin
120°
60°
30°
DC
180° sin
120°
60°
30°
DC
MCC 255
MCD 255
Fig. 3 Surge overload current
ITSM, IFSM: Crest value, t: duration Fig. 4 òi2dt versus time (1-10 ms) Fig. 4a Maximum forward current
at case temperature
Fig. 5 Power dissipation versus on-
state current and ambient
temperature (per thyristor or
diode)
Fig. 6 Three phase rectifier bridge:
Power dissipation versus direct
output current and ambient
temperature
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MCC 255
MCD 255
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
RthJC for various conduction angles d:
d RthJC (K/W)
DC 0.139
180°0.148
120°0.156
60°0.176
30°0.214
Constants for ZthJC calculation:
iR
thi (K/W) ti (s)
1 0.0066 0.00054
2 0.0358 0.098
3 0.0831 0.54
4 0.0129 12
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
RthJK for various conduction angles d:
d RthJK (K/W)
DC 0.179
180°0.188
120°0.196
60°0.216
30°0.254
Constants for ZthJK calculation:
iR
thi (K/W) ti (s)
1 0.0066 0.00054
2 0.0358 0.098
3 0.0831 0.54
4 0.0129 12
5 0.04 12
s
t
ZthJK
s
t
10-3 10-2 10-1 100101102
0.00
0.05
0.10
0.15
0.20
0.25
0.30
K/W
ZthJC
K/W
IRMS
W
Ptot
0 25 50 75 100 125 1500 100 200 300 400 500
0
500
1000
1500
2000
A
TA
°C
10-3 10-2 10-1 100101102
0.00
0.05
0.10
0.15
0.20
0.25
DC
180°
120°
60°
30°
DC
180°
120°
60°
30°
RthKA K/W
0.03
0.06
0.1
0.15
0.2
0.3
0.4
Circuit
W3
3xMCD255
3xMCC255 or
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