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Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (724) 925-7272
RM300CA-9W
Fast Recovery Welder Diode Module
300 Amperes/450 Volts
Absolute Maximum Ratings
Characteristics
Peak Reverse Blocking Voltage
Transient Peak Reverse Blocking Voltage (Non-Repetitive), t < 5ms
DC Reverse Blocking Voltage
DC Current, TC = 114°C
Peak Half-Cycle Surge (Non-Repetitive) On-State Current (60Hz)
I2t (for Fusing), 8.3 milliseconds
Junction Temperature
Storage Temperature
Maximum Mounting Torque M8 Mounting Screw
Maximum Mounting Torque M5 Terminal Screw
Module Weight (Typical)
V Isolation
Symbol
VRRM
VRSM
VR(DC)
IF(DC)
IFSM
I2t
Tj
TSTG
—
—
—
VRMS
RM300CA-9W
450
540
360
300
6000
37500
-40 to 150
-40 to 125
110
20
460
2500
Units
Volts
Volts
Volts
Amperes
Amperes
A2sec
°C
°C
kg.-cm.
kg.-cm.
Grams
Volts
Electrical and Thermal Characteristics, Tj = 25°C unless otherwise specified
Characteristics
Symbol
Test Conditions
RM300CA-9W
Units
Blocking State Maximums
Reverse Leakage Current, Peak
IRRM
Tj = 150°C, VRRM = Rated
40
mA
Conducting State Maximums
Peak On-State Voltage
VFM
IFM = 300A
1.2
Volts
Switching Minimums
Reverse Recovery Time
trr
IFM = 300A, Tj = 25°C
0.5
s
-di/dt = 600 A/ s, VR = 300V
Reverse Recovery Charge
Qrr
IFM = 300A, Tj = 25°C
50
C
-di/dt = 600 A/ s, VR = 300V
Thermal Maximums
Thermal Resistance, Junction-to-Case
Thermal Resistance, Case-to-Sink (Lubricated)
R (J-C)
R (C-S)
Per Module
Per Module
0.068
0.08
°C/Watt
°C/Watt
REVERSE RECOVERY VS di/dt
CHARACTERISTICS (TYPICAL)
FORWARD VOLTAGE DROP
CHARACTERISTICS (TYPICAL)
REVERSE RECOVERY VS FORWARD CURRENT
CHARACTERISTICS (TYPICAL)
10 3
V R = 300V
di/dt = 600A/μs
T j = 25 o C
T j = 150 o C
I rr
10 2
10 3
T j = 25 o C
T j = 150 o C
10 3
10 2
10 2
10 1
10 2
I rr
10 1
Q rr
10 2
10 1
10 0
10 1
Q rr
10 0
10 0
10 1
10 2
t rr
10 3
10 -1
10 4
10 1
0.4
0.6
0.8
1.0
1.2
1.4
10 0
10 1
t rr
10 2
V R = 300V
-di/dt = 600A/μs
T j = 25 o C
T j = 150 o C
10 3
10 -1
10 4
D-46
di/dt, (AMPERES/μs)
FORWARD VOLTAGE DROP, V F , (VOLTS)
FORWARD CURRENT, I F (AMPERES)
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