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SCHOTTKY RECTIFIER
Bulletin PD-20724 rev. B 10/02
409DMQ... Series
400 Amp
Major Ratings and Characteristics
Characteristics
409DMQ... Units
IF(AV) Rectangular
waveform
VRRM
400
135 to150
IFSM @ tp = 5 µs sine
25,500
VF @200Apk,TJ=125°C
(per leg)
0.72
TJ range
- 55 to 175
A
V
A
V
°C
TO-244AB
isolated doubler
Description/ Features
The 409DMQ Schottky rectifier doubler module series has
been optimized for low reverse leakage at high temperature.
The proprietary barrier technology allows for reliable operation
up to 175 °C junction temperature. Typical applications are in
high current switching power supplies, plating power supplies,
UPS systems, converters, free-wheeling diodes, welding, and
reverse battery protection.
175 °C TJ operation
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
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1
2
3
Modified JEDEC
Outline TO-244AB Isolated
Dimensions in millimeters and (inches)
1

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409DMQ... Series
Bulletin PD-20724 rev. B 10/02
Voltage Ratings
Parameters
V R Max. DC Reverse Voltage (V)
VRWMMax. Working Peak Reverse Voltage (V)
409DMQ135
135
409DMQ150
150
Absolute Maximum Ratings
Parameters
IF(AV) Max.AverageForward
Current (PerDevice)
IFSM Max.PeakOneCycleNon-Repetitive
SurgeCurrent (Per Leg)
EAS Non-RepetitiveAvalancheEnergy
(Per Leg)
IAR RepetitiveAvalancheCurrent
(Per Leg)
Electrical Specifications
409DMQ Units
Conditions
400 A 50%dutycycle@TC= 80 °C, rectangular wave form
20000
2300
15
5µs Sineor3µsRect.pulse Following any rated
A load condition and with
10ms Sine or 6ms Rect. pulse rated VRRM applied
mJ TJ = 25 °C, IAS = 1 Amps, L = 30 mH
1 A Current decaying linearly tozero in1µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Parameters
409DMQ Units
Conditions
VFM Max. Forward Voltage Drop
(Per Leg)
(1)
1.03
1.21
0.71
0.82
IRM Max. Reverse Leakage Current
(Per Leg)
(1)
6
85
CT Max. Junction Capacitance (Per Leg)
LS Typical Series Inductance (Per Leg)
dv/dt Max. Voltage Rate of Change
(Rated VR)
6000
5.0
10000
Thermal-Mechanical Specifications
V @ 200A
V @ 400A
V @ 200A
V @ 400A
TJ = 25 °C
TJ = 125 °C
mA TJ = 25 °C
mA TJ = 125 °C
VR = rated VR
pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
nH From top of terminal hole to mounting plane
V/ µs
(1) Pulse Width < 300µs, Duty Cycle <2%
Parameters
409DMQ Units
Conditions
TJ Max.JunctionTemperature Range
Tstg Max.Storage Temperature Range
-55 to175
-55 to175
°C
°C
RthJC Max.Thermal Resistance Junction
toCase (Per Leg)
0.4 °C/W DC operation
RthJC Max.Thermal Resistance Junction
toCase(Per Package)
0.2 °C/W DC operation
RthCS Typical Thermal Resistance,Case
to Heatsink
0.1 °C/W Mounting surface,smooth and greased
wt ApproximateWeight
79(2.80) g(oz.)
T MountingTorque Base
Min. 24(20)
Max.
Mounting Torque Center Hole Typ.
Terminal Torque
Min.
35(30)
13.5(12)
35(30)
Kg-cm
(Ibf-in)
Max. 46(40)
Case Style
TO - 244AB isolated doubler Modified JEDEC
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1000
100
10
TJ = 150˚C
TJ = 125˚C
TJ = 25˚C
409DMQ... Series
Bulletin PD-20724 rev. B 10/02
1000
100 TJ = 175˚C
150˚C
10 125˚C
1
0.1
0.01
100˚C
75˚C
50˚C
25˚C
0.001
0
30 60 90 120 150
Reverse Voltage-VR(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
10000
1000
TJ = 25˚C
1
0 0.4 0.8 1.2 1.6 2
Forward Voltage Drop-VFM(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
1
100
0
30 60 90 120
Reverse Voltage-VR(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
D = 0.75
D = 0.50
D = 0.33
0.1 D = 0.25
D = 0.20
PDM
0.01
0.001
0.00001
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Single Pulse
(Thermal Resistance)
t1
t2
Notes:
1. Duty factor D = t1 / t2
2. Peak TJ= PDMx Z thJC+ T C
0.0001 0.001
0.01
0.1
1
10
t1,RectangularPulseDuration(Seconds)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics
100
3