POWEREX RM300CA-9W Datasheet
Dimension Inches Millimeters
A 3.94 100.0
B 3.38±0.01 86.0±0.25
C 2.16 55.0
D 1.61±0.01 41.0±0.25
E 1.18 30.0
F 1.12 28.5
G 0.76 19.4
H 0.71 18.0
J M8 Metric M8
K 0.28 R R7.0
L 0.28 7.0
M 0.22 Dia. Dia. 5.5
Description:
Powerex Fast Recovery Welder
Diode Modules are designed for
use in applications requiring fast
switching.The modules are
isolated for easy mounting with
other components on common
heatsinks.
Features:
M Isolated Mounting
M Planar Chips
Applications:
M Welding Power Supplies
M Free Wheeling Diodes
M Center Tap Circuits
Ordering Information:
Select the complete ten digit
module part number you desire
from the table below.
Example: RM300CA-9W is a
450V (V
CES
), 300 Ampere, Fast
Recovery Common Cathode
Diode Module.
Current Rating Voltage
Type Amperes Volts (x50)
RM 300 9W
D-45
Powerex,Inc., 200 Hillis Street,Youngwood, Pennsylvania 15697-1800 (724) 925-7272
Fast Recovery
Welder Diode Module
300 Amperes/450 Volts
RM300CA-9W
Outline Drawing
RM300CA-9W
Fast Recovery Welder Diode Module
300 Amperes/450 Volts
A
B
EE
G
K (4 TYP.)
J - M8 THD
(3 TYP.)
L E
A1
K
H
A2
M - DIA.
(4 TYP.)
D C
F
A2KA1
D-46
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 Symbol RM300CA-9W Units
Peak Reverse Blocking Voltage V
RRM
450 Volts
Transient Peak Reverse Blocking Voltage (Non-Repetitive), t < 5ms V
RSM
540 Volts
DC Reverse Blocking Voltage V
R(DC)
360 Volts
DC Current, TC= 114°C I
F(DC)
300 Amperes
Peak Half-Cycle Surge (Non-Repetitive) On-State Current (60Hz) I
FSM
6000 Amperes
I2t (for Fusing), 8.3 milliseconds I2t 37500 A2sec
Junction Temperature T
j
-40 to 150 °C
Storage Temperature T
STG
-40 to 125 °C
Maximum Mounting Torque M8 Mounting Screw — 110 kg.-cm.
Maximum Mounting Torque M5 Terminal Screw — 20 kg.-cm.
Module Weight (Typical) — 460 Grams
V Isolation V
RMS
2500 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 I
RRM
Tj= 150°C, V
RRM
= Rated 40 mA
Conducting State Maximums
Peak On-State Voltage V
FM
IFM= 300A 1.2 Volts
Switching Minimums
Reverse Recovery Time t
rr
IFM= 300A, Tj= 25°C 0.5 ms
-di/dt = 600 A/ms, VR= 300V
Reverse Recovery Charge Q
rr
IFM= 300A, Tj= 25°C 50 mC
-di/dt = 600 A/ms, VR= 300V
Thermal Maximums
Thermal Resistance, Junction-to-Case R
u(J-C)
Per Module 0.068 °C/Watt
Thermal Resistance, Case-to-Sink (Lubricated) R
u(C-S)
Per Module 0.08 °C/Watt
di/dt, (AMPERES/µs)
REVERSE RECOVERY VS di/dt
CHARACTERISTICS (TYPICAL)
10
1
10
2
10
4
REVERSE RECOVERY, I
rr
, (AMPERES), Q
rr
, (µC)
10
0
10
2
10
3
REVERSE RECOVERY TIMES, t
rr,
(µs)
10
-1
10
1
10
2
t
rr
VR = 300V
di/dt = 600A/µs
10
1
10
3
10
0
I
rr
Tj = 25oC
T
j
= 150oC
Q
rr
FORWARD VOLTAGE DROP, VF, (VOLTS)
FORWARD CURRENT, I
F
, (AMPERES)
FORWARD VOLTAGE DROP
CHARACTERISTICS (TYPICAL)
0.8 1.40.4
10
2
10
3
10
1
0.6 1.0 1.2
Tj = 25oC
T
j
= 150oC
REVERSE RECOVERY VS FORWARD CURRENT
CHARACTERISTICS (TYPICAL)
10
1
10
2
10
4
REVERSE RECOVERY, I
rr
, (AMPERES), Q
rr
, (µC)
10
0
10
2
10
3
10
-1
10
1
10
2
Q
rr
t
rr
VR = 300V
-di/dt = 600A/µs
10
1
10
3
10
0
I
rr
FORWARD CURRENT, IF (AMPERES)
Tj = 25oC
T
j
= 150oC
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