Bulletin PD-2.234 rev. E 05/02
303CNQ... SERIES
SCHOTTKY RECTIFIER
300 Amp
TO-244AB
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 150Apk, T
J
=125°C
(per leg)
range
Description/ Features
The 303CNQ center tap Schottky rectifier module series has
been optimized for low reverse leakage at high temperature.
The proprietary barrier technology allows for reliable opera-
tion 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
303CNQ... Units
300
80 to 100
22,000
0.72
- 55 to 175
A
V
A
V
°C
80.01 [3.150]
40.26 [1.585]
39.75 [1.565]
COMMON
CATHODE
Ø
10.41 [.410]
9.65 [.380]
20.32 [.800]
17.78 [.700]
LUG
TERMINAL
ANODE 1
LUG
TERMINAL
ANODE 2
2X Ø
7.49 [.295]
6.99 [.275]
34.925 [1.375]
REF.
63.50 [2.500]
60.96 [2.400]
Ø
4.95 [.195]
4.70 [.185]
1/4-20 SLOTTED HEX
BASE
COMMON CATHODE
23.55 [.927]
20.42 [.804]
15.75 [.620]
14.99 [.590]
3.35 [.132]
3.02 [.119]
92.71 [3.650]
90.17 [3.550]
NOTES:
1. DIMENSIONS ARE SHOWN IN MILLIMETERS [INCHES].
2. CONTROLLING DIMENSION: MILLIMETER
Modified JEDEC
Outline TO-244AB
Dimensions in millimeters and (inches)
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1
303CNQ... Series
Bulletin PD-2.234 rev. E 05/02
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
303CNQ080
80
303CNQ090
90
303CNQ100
100
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 5
I
FSM
E
AS
I
AR
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
22,000
2500
15
1
A
mJ
A
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
T
J
= 25 °C, I
AS
= 1 Amps, L = 30 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
303CNQ Units Conditions
300
A
50% duty cycle @ T
C
= 126 °C, rectangular wave form
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
303CNQ Units Conditions
0.91
1.09
0.72
0.85
V
V
V
V
mA
mA
pF
nH
V/ µs
(1) Pulse Width < 300µs, Duty Cycle <2%
@ 150A
@ 300A
@ 150A
@ 300A
T
J
= 25 °C
T
J
= 125 °C
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2
(1)
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
4.5
60
4150
6.0
10000
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25°C
From top of terminal hole to mounting plane
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
303CNQ Units Conditions
-55 to 175
-55 to 175
0.30
0.15
0.10
°C
°C
°C/W DC operation
°C/W DC operation
°C/W Mounting surface , smooth and greased
* See Fig. 4
R
thJC
Max. Thermal Resistance Junction
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
to Heatsink
wt
Approximate Weight
T
Mounting Torque Base
Min.
Max.
Mounting Torque Center Hole Typ.
Terminal Torque
Min.
Max.
Case Style
79 (2.80) g (oz.)
24 (20)
35 (30)
Kg-cm
13.5 (12) (Ibf-in)
35 (30)
46 (40)
TO - 244AB
Modified JEDEC
2
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303CNQ... Series
Bulletin PD-2.234 rev. E 05/02
10
00
10
00
10
0
1
0
1
.1
.0
1
.0 1
0
0
T =1 5 C
7°
J
1 0C
5°
1 5C
2°
1 0C
0°
7°
5C
5°
0C
2°
5C
Instantaneous Forward Current - I
F
(A)
10
0
Reverse Current - I
R
(mA)
2
0
4
0
6
0
8
0
10
0
T =1 5 C
7°
J
T =1 5 C
2°
J
T= 2°
5C
J
1
0
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
100
00
Junction Capacitance - C
T
(pF)
10
00
T =2 °
5C
J
1
0
.2
.4
.6
.8
1
1
.2
1
.4
1
.6
10
0
0 1 2 3 4 5 6 7 8 9 1 01 0
0 0 0 0 0 0 0 0 0 0 1
Forward Voltage Drop - V
FM
(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
1
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Thermal Impedance Z
thJC
(°C/W)
D=0 0
.5
.1
D=0 3
.3
D=0 5
.2
D=0 7
.1
D=0 8
.0
.0
1
P
M
D
t
1
t2
N te :
o s
1 D tyfa to D= t1/ t2
. u
c r
S g P ls
in le u e
(T e a R s ta c )
h rm l e is n e
2 P a T =P xZ
. ek
+T
J D
M th C C
J
.0
1
.1
1
1
0
10
0
.0 1
0
.0 0 1
00
.0 0
01
.0 1
0
t
1
, Rectangular Pulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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3
303CNQ... Series
Bulletin PD-2.234 rev. E 05/02
10
8
10
5
Allowable Case Temperature (°C)
10
6
10
5
D
C
10
4
10
3
10
2
0
Average Power Loss (Watts)
10
7
33 N
0C Q
R J (D ) =0 0C
.3 ° /W
th C C
D=0 8
.0
D=0 7
.1
15
2
D=0 5
.2
D=0 3
.3
.5
1 0 D=0 0
0
7
5
R SL it
M im
5
0
2
5
0
0
D
C
4
0
8
0
10
2
10
6
20
0
20
4
4
0
8
0
10
2
10
6
20
0
20
4
Average Forward Current - I
F
(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Non-Repetitive Surge Current - I
FSM
(A)
100000
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following Surge
Average Forward Current - I
F
(AV)
(A)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
10000
1000
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
H IG H -SPE ED
SW IT C H
FRE E-W H EEL
D IO D E
40H FL40S02
V d = 25 V olt
D UT
IRFP460
Rg = 2 5 oh m
+
C UR RE N T
M O N ITO R
Fig. 8 - Unclamped Inductive Test Circuit
4
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303CNQ... Series
Bulletin PD-2.234 rev. E 05/02
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level.
Qualification Standards can be found on IR's Web site.
IR WORLD HEADQUARTERS:
233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 05/02
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