SCHOTTKY RECTIFIER
6.6 Amp
6CWQ03F
6CWQ04F
PD-2.313 rev. A 12/97
1
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CASE STYLE AND DIMENSIONS
Dimensions in millimeters and inches
D - PAK Outline (Similar to TO-252AA)
Major Ratings and Characteristics
I
F(AV)
Rectangular
6.6
A
waveform
V
RRM
30/40
V
I
FSM
@ tp = 5 s sine
470
A
V
F
@
3 Apk, T
J
= 25C
0.55
V
(per leg)
T
J
- 40 to 125
C
Characteristics
6CWQ..F
Units
The 6CWQ..F surface mount, center tap, Schottky rectifier
has been designed for applications requiring low forward drop
and small foot prints on PC boards. 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
Description/Features
6CWQ03F, 6CWQ04F
PD-2.313 rev. A 12/97
2
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I
F(AV)
Max. Average Forward Current
6.6
A
50% duty cycle @ T
C
= 97 C, rectangular wave form
* See Fig. 5
I
FSM
Max. Peak One Cycle Non-Repetitive
470
5s Sine or 3s Rect. pulse
Surge Current (Per Leg) * See Fig. 7
42
10ms Sine or 6ms Rect. pulse
Absolute Maximum Ratings
Parameters
6CWQ..F Units
Conditions
A
Part number
6CWQ03F
6CWQ04F
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
30
40
Voltage Ratings
Following any rated
load condition and with
rated V
RRM
applied
(1) Pulse Width < 300s, Duty Cycle <2%
V
FM
Max. Forward Voltage Drop
0.55
V
@ 3A
(Per Leg) * See Fig. 1
(1)
0.71
V
@ 6A
0.50
V
@ 3A
0.63
V
@ 6A
I
RM
Max. Reverse Leakage Current
3
mA
T
J
= 25 C
(Per Leg) * See Fig. 2
(1)
20
mA
T
J
= 125 C
C
T
Typical Junction Capacitance (Per Leg)
180
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
dv/dt Max. Voltage Rate of Change
10,000
V/ s
(Rated V
R
)
T
J
= 25 C
T
J
= 125 C
V
R
= rated V
R
Parameters
6CWQ..F Units
Conditions
Electrical Specifications
T
J
Max. Junction Temperature Range
-40 to 125
C
T
stg
Max. Storage Temperature Range
-40 to 125
C
R
thJC
Max. Thermal Resistance Junction
5.0
C/W
DC operation
* See Fig. 4
to Case
R
thJA
Max. Thermal Resistance Junction
80
C/W
DC operation
to Ambient
PC Board mounted print land = 20x20mm
wt
Approximate Weight
0.3 (0.01)
g (oz.)
Case Style
D - PAK
Similar to TO-252AA
Thermal-Mechanical Specifications
Parameters
6CWQ..F Units
Conditions
6CWQ03F, 6CWQ04F
PD-2.313 rev. A 12/97
3
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)
10
100
1000
0
5
10 15 20 25 30 35 40 45
T = 25C
J
Reverse Voltage - V (V)
R
T
J
u
n
c
t
i
o
n
C
a
pa
c
i
t
a
nc
e -
C
(
p
F)
.01
.1
1
10
.00001
.0001
.001
.01
.1
1
10
100
D = 0.33
D = 0.50
D = 0.25
D = 0.17
D = 0.08
1
th
J
C
t , Rectangular Pulse Duration (Seconds)
Th
e
r
m
a
l
I
m
p
e
d
a
n
c
e
-
Z
(
C
/
W
)
Single Pulse
(Thermal Resistance)
2
t
1
t
P
DM
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1
J
DM
thJC
C
2
.1
1
10
100
.1 .2 .3 .4
.5
.6
.7 .8 .9
1 1.1 1.2 1.3
FM
F
I
n
s
t
an
t
a
n
e
o
u
s
F
o
r
w
ar
d C
ur
r
e
nt
-
I
(
A
)
Forward Voltage Drop - V (V)
T = 125C
T = 25C
J
J
.0001
.001
.01
.1
1
10
100
0
5
10
15
20
25
30
35
40
R
R
100C
75C
50C
25C
Reverse Voltage - V (V)
R
ev
e
r
s
e
C
u
r
r
e
n
t
-
I
(
m
A)
T = 125C
J
6CWQ03F, 6CWQ04F
PD-2.313 rev. A 12/97
4
www.irf.com
110
115
120
125
130
0
1
2
3
4
5
DC
A
llo
w
ab
l
e
C
a
s
e
T
e
m
p
e
ra
t
u
re
-
(
C
)
Average Forward Current - I (A)
F(AV)
R (DC) = 5.0C/W
thJC
0
.5
1
1.5
2
2.5
3
0
.5
1 1.5 2 2.5 3 3.5 4 4.5 5
DC
A
v
e
r
ag
e P
ow
e
r
Lo
s
s
-
(
W
a
tts
)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Limit
Average Forward Current - I (A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
10
100
1000
10
100
1000
10000
FS
M
p
N
o
n
-
R
e
p
e
ti
ti
v
e
S
u
r
g
e
C
u
r
r
e
n
t
-
I
(
A
)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
Square Wave Pulse Duration - t (microsec)
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