I
F(AV)
Rectangular
200
A
waveform
V
RRM
range
80 to 100
V
I
FSM
@ tp = 5 s sine
16,000
A
V
F
@
100Apk, T
J
=125C
0.70
V
(per leg)
T
J
range
- 55 to 175
C
Characteristics
203DMQ... Units
Major Ratings and Characteristics
The 203DMQ center tap Schottky rectifier 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 T
J
operation
Center tap module
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
Description/Features
Modified JEDEC
Outline TO-244AB Isolated
Dimensions in millimeters and (inches)
200 Amp
203DMQ... SERIES
Bulletin PD-20579 04/00
SCHOTTKY RECTIFIER
1
2
3
TO-244AB isolated
Common Cathode
203DMQ... Series
2
Bulletin PD-20579 04/00
www.irf.com
V
FM
Max. Forward Voltage Drop
0.86
V
@ 100A
(Per Leg) * See Fig. 1
(1)
1.03
V
@ 200A
0.70
V
@ 100A
0.84
V
@ 200A
I
RM
Max. Reverse Leakage Current
3
mA
T
J
= 25 C
(Per Leg) * See Fig. 2
(1)
40
mA
T
J
= 125 C
V
F(TO)
Threshold Voltage
0.50
V
T
J
= T
J
max.
r
t
Forward Slope Resistance
1.08
m
C
T
Max. Junction Capacitance (Per Leg)
2,650
pF
V
R
= 5V
DC
, (test signal range 100KHz to 1MHz) 25C
L
S
Typical Series Inductance (Per Leg)
7.0
nH
From top of terminal hole to mounting plane
dv/dt Max. Voltage Rate of Change
10,000
V/ s
(Rated V
R
)
I
F(AV)
Max. Average Forward
200
A
50% duty cycle @ T
C
= 107 C, rectangular wave form
Current * See Fig. 5
(Per Device)
I
FSM
Max. Peak One Cycle Non-Repetitive
16,000
5s Sine or 3s Rect. pulse
Surge Current (Per Leg) * See Fig. 7
2,100
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
15
mJ
T
J
= 25 C, I
AS
= 1 Amps, L = 30 mH
(Per Leg)
I
AR
Repetitive Avalanche Current
1
A
Current decaying linearly to zero in 1 sec
(Per Leg)
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Part number
203DMQ080
203DMQ100
V
R
Max. DC Reverse Voltage (V)
80
100
V
RWM
Max. Working Peak Reverse Voltage (V)
Voltage Ratings
Absolute Maximum Ratings
Following any rated
load condition and with
rated V
RRM
applied
A
Parameters
203DMQ Units
Conditions
T
J
= 25 C
T
J
= 125 C
V
R
= rated V
R
Electrical Specifications
(1) Pulse Width < 300s, Duty Cycle <2%
Parameters
203DMQ Units
Conditions
T
J
Max. Junction Temperature Range
- 55 to 175
C
T
stg
Max. Storage Temperature Range
- 55 to 175
C
R
thJC
Max. Thermal Resistance Junction
0.70
C/W DC operation
* See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
0.35
C/W
DC operation
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
0.10
C/W Mounting surface , smooth and greased
to Heatsink
wt
Approximate Weight
79 (2.80)
g (oz.)
T
Mounting Torque
Min.
40 (35)
Max.
58 (50)
Mounting Torque Center Hole
Typ.
17 (15)
Terminal Torque
Min.
58 (50)
Max.
86 (75)
Case Style
TO - 244AB Isolated Modified JEDEC
Thermal-Mechanical Specifications
Kg-cm
(Ibf-in)
Parameters
203DMQ Units
Conditions
203DMQ... Series
3
Bulletin PD-20579 04/00
www.irf.com
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
Instantaneous Forward Current - I
F
(A)
Forward Voltage Drop - V
FM
(V)
Reverse Current - I
R
(mA)
Reverse Voltage - V
R
(V)
Junction Capacitance - C
T
(p F)
Reverse Voltage - V
R
(V)
Thermal Impedance Z
thJC
(C/W)
t
1
, Rectangular Pulse Duration (Seconds)
100
1000
10000
0
20
40
60
80
100
T = 25C
J
1
10
100
1000
0
0.2
0.4
0.6
0.8
1
1.2
1.4
T = 175C
T = 125C
T = 25C
J
J
J
0.001
0.01
0.1
1
10
100
1000
0
20
40
60
80
100
125C
75C
50C
25C
T = 175C
J
150C
100C
0.001
0.01
0.1
1
0.00001
0.0001
0.001
0.01
0.1
1
10
100
Single Pulse
(Thermal Resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
D = 0.20
2
t
1
t
P
DM
203DMQ... Series
4
Bulletin PD-20579 04/00
www.irf.com
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 8 - Unclamped Inductive Test Circuit
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
FR E E - W H E E L
D IO D E
40 HFL4 0 S02
C U R R E N T
M O N IT O R
H IG H - SP E E D
SW IT C H
IRFP4 60
L
D U T
Rg = 25 ohm
V d = 2 5 V o lt
+
(2) Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 80% rated V
R
Allowable Case Temperature (
C)
Average Forward Current - I
F(AV)
(A)
Average Power Loss (Watts)
Average Forward Current - I
F(AV)
(A)
Non-Repetitive Surge Current - I
FSM
(A)
Square Wave Pulse Duration - t
p
(microsec)
0
50
100
150
200
250
0
50
100
150
200
250
300
DC
RMS Limit
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
1000
10000
100000
10
100
1000
10000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
80
100
120
140
160
180
0
50
100
150
200
250
300
DC
80% Square Wave
(D = 0.50)
see note (2)
203DMQ... Series
5
Bulletin PD-20579 04/00
www.irf.com
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