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SCHOTTKY RECTIFIER
3.5 Amp
30WQ03FN
PD-20559 rev. B 10/98
1
www.irf.com
Major Ratings and Characteristics
I
F(AV)
Rectangular
3.5
A
waveform
V
RRM
30
V
I
FSM
@ tp = 5 s sine
535
A
V
F
@
3 Apk, T
J
= 125C
0.35
V
T
J
range
- 40 to 150
C
Characteristics
30WQ03FN Units
Description/Features
The 30WQ03FN surface mount Schottky rectifier 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
Small foot print, surface moutable
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
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)
1.02 (0.04)
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)
0.64 (0.03)
5.97 (0.24)
10.67 (0.42)
6.48 (0.26)
2x 2.54 (0.10)
1.65 (0.06)
2X
2.28 (0.09)
2X
MINIMUM RECOMMENDED FOOTPRINT
Dimensions in millimeters and (inches)
Conform to JEDEC outline D-Pak (Similar to TO-252AA)
D-Pak (TO-252AA)
1
3
2
Anode
Anode
BASE
Cathode
30WQ03FN
PD-20559 rev. B 10/98
2
www.irf.com
Part number
30WQ03FN
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
30
Voltage Ratings
I
F(AV)
Max. Average Forward Current
3.5
A
50% duty cycle @ T
C
= 134 C, rectangular wave form
* See Fig. 5
I
FSM
Max. Peak One Cycle Non-Repetitive
535
5s Sine or 3s Rect. pulse
Surge Current * See Fig. 7
90
10ms Sine or 6ms Rect. pulse
Parameters
30WQ03FN Units
Conditions
Absolute Maximum Ratings
A
Following any rated
load condition and
with rated V
RRM
applied
V
FM
Max. Forward Voltage Drop
0.45
V
@ 3A
* See Fig. 1
(1)
0.52
V
@ 6A
0.35
V
@ 3A
0.46
V
@ 6A
I
RM
Max. Reverse Leakage Current
2
mA
T
J
= 25 C
* See Fig. 2
(1)
50
mA
T
J
= 125 C
V
F(TO)
Threshold Voltage
0.22
V
T
J
= T
J
max.
r
t
Forward Slope Resistance
32.86
m
C
T
Typical Junction Capacitance
290
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25 C
L
S
Typical Series Inductance
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
Electrical Specifications
Parameters
30WQ03FN Units
Conditions
(1) Pulse Width < 300s, Duty Cycle < 2%
T
J
Max. Junction Temperature Range
-40 to 150
C
T
stg
Max. Storage Temperature Range
-40 to 150
C
R
thJC
Max. Thermal Resistance Junction
4.7
C/W DC operation * See Fig. 4
to Case
wt
Approximate Weight
0.3 (0.01)
g (oz.)
Case Style
D - PAK
Similar to TO-252AA
Thermal-Mechanical Specifications
Parameters
30WQ03FN Units
Conditions
30WQ03FN
PD-20559 rev. B 10/98
3
www.irf.com
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
Fig. 1 - Maximum Forward Voltage Drop Characteristics
0.001
0.01
0.1
1
10
100
5
10
15
20
25
30
R
R
125C
100C
75C
50C
25C
R
e
v
e
r
s
e

C
u
rre
n
t
-
I
(
m
A
)
T = 150C
J
Reverse Voltage - V (V)
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
Th
e
r
m
a
l
I
m
p
e
d
a
n
c
e
Z


(
C
/
W
)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
1
2
J
DM
thJC
C
2
t
1
t
P
DM
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1
10
100
0.2
0. 4 0.6
0.8
1
1.2 1.4
1.6
1. 8
2
2.2
In
s
t
a
n
t
a
n
e
o
u
s
F
o
rwa
r
d
C
u
rre
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
Ju
n
c
t
i
o
n

C
a
p
a
c
i
t
a
n
c
e
- C

(
p
F)
Reverse Voltage - V (V)
T = 25C
J
30WQ03FN
PD-20559 rev. B 10/98
4
www.irf.com
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
Fig. 6 - Forward Power Loss Characteristics
Fig. 7 - Maximum Non-Repetitive Surge Current
(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
10
100
1000
10
100
1000
10000
FS
M
N
o
n
-
R
e
p
e
t
i
t
i
v
e
S
u
r
g
e
C
u
r
r
e
n
t
-
I
(
A
)
p
Square Wave Pulse Duration - t (microsec)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
120
125
130
135
140
145
150
0 0. 5 1 1.5 2 2.5 3 3. 5 4 4.5 5 5.5
DC
A
l
l
o
w
a
b
l
e
C
a
s
e

Te
m
p
e
r
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
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
2.2
0
1
2
3
4
5
DC
A
v
e
r
ag
e
P
o
we
r

Lo
ss -

(
W
at
t
s
)
F(AV)
RMS Limit
Average Forward Current - I (A)
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
30WQ03FN
PD-20559 rev. B 10/98
5
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 30WQ03FN
5K3A
30WQ03FN
9712
INTERNATIONAL
RECTIFIER LOGO
PART NUMBER
DATE CODE (YYWW)
YY = YEAR
WW = WEEK
ASSEMBLY
LOT CODE
(K)
(A)
(A)