SCHOTTKY RECTIFIER
12 Amp
12CWQ03FN
www.irf.com
1
Bulletin PD-20558 rev. E 01/03
Major Ratings and Characteristics
I
F(AV)
Rectangular
12
A
waveform
V
RRM
30
V
I
FSM
@ tp = 5 s sine
320
A
V
F
@
6 Apk, T
J
= 125C
0.37
V
(per leg)
T
J
range
- 55 to 150
C
Characteristics
12CWQ03FN
Units
Description/ Features
The 12CWQ03FN surface mount, center tap, Schottky rectifier
series has been designed for applications requiring low forward
drop and small foot prints on PC board. Typical applications are
in disk drives, switching power supplies, converters, free-
wheeling diodes, battery charging, and reverse battery
protection.
Popular D-PAK outline
Center tap configuration
Small foot print, surface mountable
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term reliability
D-Pak (TO-252AA)
6.73 (0.26)
6.35 (0.25)
5.46 (0.21)
5.21 (0.20)
4
1.27 (0.05)
0.88 (0.03)
5.97 (0.23)
1 - Anode
2 - Cathode
3 - Anode
4 - Cathode
1.64 (0.02)
1.52 (0.06)
1.15 (0.04)
1.14 (0.04)
0.76 (0.03)
2x
2.28 (0.09)
2x
0.89 (0.03)
0.64 (0.02)
3x
4.57 (0.18)
1
2
3
6.22 (0.24)
2.38 (0.09)
2.19 (0.08)
6.45 (0.24)
5.68 (0.22)
10.42 (0.41)
9.40 (0.37)
0.46 (0.02)
0.58 (0.02)
1.14 (0.04)
0.89 (0.03)
0.51 (0.02)
MIN.
0.58 (0.02)
0.46 (0.02)
MINIMUM RECOMMENDED FOOTPRINT
5.97 (0.24)
10.67 (0.42)
1.65 (0.06)
6.48 (0.26)
2x
2.54 (0.10)
2x
2.28 (0.09)
2x
Conform to JEDEC outline D-Pak (Similar to TO-252AA)
Dimensions in millimeters and (inches)
Anode
1
3
4
Anode
2
Base
Common
Cathode
Common
Cathode
12CWQ03FN
2
Bulletin PD-20558 rev. E 01/03
www.irf.com
V
FM
Max. Forward Voltage Drop
0.47
V
@ 6A
(Per Leg) * See Fig. 1
(1)
0.55
V
@ 12A
0.37
V
@ 6A
0.49
V
@ 12A
I
RM
Max. Reverse Leakage Current
3
mA
T
J
= 25 C
(Per Leg) * See Fig. 2
(1)
58
mA
T
J
= 125 C
V
F(TO)
Threshold Voltage
0.196
V
T
J
= T
J
max.
r
t
Forward Slope Resistance
21.66
m
C
T
Typ. Junction Capacitance (Per Leg)
590
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25C
L
S
Typical Series Inductance (Per Leg)
5.0
nH
Measured lead to lead 5mm from package body
T
J
Max. Junction Temperature Range (*) - 55 to 150
C
T
stg
Max. Storage Temperature Range
- 55 to 150
C
R
thJC
Max. Thermal Resistance (Per Leg)
3.0
C/W DC operation
* See Fig. 4
Junction to Case
(Per Device)
1.5
wt
Approximate Weight
0.3 (0.01) g (oz.)
Case Style
D-Pak
Similar to TO-252AA
Thermal-Mechanical Specifications
T
J
= 25 C
T
J
= 125 C
Electrical Specifications
(1) Pulse Width < 300s, Duty Cycle <2%
V
R
= rated V
R
Part number
12CWQ03FN
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
Voltage Ratings
30
Parameters
12CWQ... Units
Conditions
Parameters
12CWQ... Units
Conditions
I
F(AV)
Max. Average Forward (Per Leg)
6
A
50% duty cycle @ T
C
= 135C, rectangular wave form
Current * See Fig. 5
(Per Device)
12
I
FSM
Max. Peak One Cycle Non-Repetitive
320
5s Sine or 3s Rect. pulse
Surge Current (Per Leg) * See Fig. 7
130
10ms Sine or 6ms Rect. pulse
E
AS
Non-Rep. Avalanche Energy (Per Leg)
10
mJ
T
J
= 25 C, I
AS
= 2.0 Amps, L = 5 mH
I
AR
Repetitive Avalanche Current
2.0
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
Absolute Maximum Ratings
Following any rated
load condition and with
rated V
RRM
applied
A
Parameters
12CWQ... Units
Conditions
<
thermal runaway condition for a diode on its own heatsink
(*) dPtot
1
dTj
Rth( j-a)
12CWQ03FN
3
Bulletin PD-20558 rev. E 01/03
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)
0.001
0.01
0.1
1
10
100
1000
0
5
10
15
20
25
30
R
R
125C
100C
75C
50C
25C
R
e
v
e
r
s
e
Cu
r
r
en
t
- I (
m
A
)
T = 150C
J
Reverse Voltage - V (V)
0.01
0.1
1
10
0.00001
0.0001
0.001
0.01
0.1
1
th
J
C
t , Rectangular Pulse Duration (Seconds)
Single Pulse
(Thermal Resistance)
1
T
h
er
m
a
l
Im
p
e
da
n
c
e
Z
(
C/W
)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
J
DM
thJC
C
2
1
2
t
1
t
P
DM
1
10
100
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6 1.8
In
st
a
n
t
a
n
e
ou
s F
o
rwa
r
d
Cu
r
r
e
n
t
- I
(A
)
F
FM
Forward Voltage Drop - V (V)
T = 150C
T = 125C
T = 25C
J
J
J
100
1000
0
5
10
15
20
25
30
35
R
T
J
u
nctio
n
C
a
p
a
c
i
ta
n
c
e
-
C
(
p
F)
Reverse Voltage - V (V)
T = 25C
J
12CWQ03FN
4
Bulletin PD-20558 rev. E 01/03
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. 6 - Forward Power Loss Characteristics
(Per Leg)
(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
120
125
130
135
140
145
150
0
1
2
3
4
5
6
7
8
9
DC
A
l
l
o
w
a
b
l
e Ca
s
e
T
e
m
p
er
a
t
u
r
e
- (
C)
F(AV)
see note (2)
Square wave (D = 0.50)
80% Rated V applied
R
Average Forward Current - I (A)
0
0.5
1
1.5
2
2.5
3
3.5
4
0
1
2
3
4
5
6
7
8
9
DC
Av
er
ag
e Pow
e
r
L
o
s
s
- (W
a
t
t
s
)
F(AV)
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
Average Forward Current - I (A)
100
1000
10
100
1000
10000
FS
M
Non
-
R
e
p
e
t
i
t
i
v
e
S
u
r
g
e
Cu
r
r
e
n
t
-
I
(A
)
p
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
Square Wave Pulse Duration - t (microsec)
12CWQ03FN
5
Bulletin PD-20558 rev. E 01/03
www.irf.com
Tape & Reel Information
TR
FEED DIRECTION
4.1 (0.16)
3.9 (0.15)
2.1 (0.83)
1.9 (0.07)
12.1 (0.48)
1.65 (0.06)
1.85 (0.07)
1.65 (0.06)
7.4 (0.29)
2.6 (0.10)
1.5 (0.06)
7.6 (0.30)
11.9 (0.47)
1.85 (0.07)
TO-252AA Tape & Reel
When ordering, indicate the part
number, part orientation, and the
quantity. Quantities are in multiples
of 2,000 pieces per reel for TR and
multiples of 3,000 pieces per reel
for both TRL and TRR.
13 (0.52) DIA.
DIA. MAX.
375 (14.17)
50 (1.97) DIA.
22.4 (0.88)
0.35 (0.01)
16.3 (0.64)
15.7 (0.62)
2.75 (0.11)
2.55 (0.10)
0.25 (0.01)
6.8 (0.26)
7.0 (0.28)
TRR
FEED DIRECTION
4.1 (0.16)
3.9 (0.15)
2.1 (0.83)
1.9 (0.07)
8.1 (0.32)
1.85 (0.07)
1.65 (0.06)
1.85 (0.07)
1.65 (0.06)
7.4 (0.29)
2.6 (0.10)
1.5 (0.06)
7.6 (0.30)
7.9 (0.31)
0.35 (0.01)
16.3 (0.64)
15.7 (0.62)
2.75 (0.11)
2.55 (0.10)
0.25 (0.01)
10.4 (0.41)
10.6 (0.42)
DIA.
TRL
FEED DIRECTION
4.1 (0.16)
3.9 (0.15)
2.1 (0.83)
1.9 (0.07)
8.1 (0.32)
1.85 (0.07)
1.65 (0.06)
1.85 (0.07)
1.65 (0.06)
7.4 (0.29)
2.6 (0.10)
1.5 (0.06)
7.6 (0.30)
7.9 (0.31)
0.35 (0.01)
16.3 (0.64)
15.7 (0.62)
2.75 (0.11)
2.55 (0.10)
0.25 (0.01)
10.4 (0.41)
10.6 (0.42)
DIA.
DIA.
DIA.
DIA.
DIA.
Marking Information
EXAMPLE: THIS IS AN 12CWQ03FN
5K3A
12CWQ03FN
712A
INTERNATIONAL
RECTIFIER LOGO
PART NUMBER
DATE CODE (YWWA)
Y
= YEAR
W W = WEEK
A
= LINE
ASSEMBLY
LOT CODE
4 (K)
1 (A)
3 (A)
2 (K)
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