PD-20551 rev. B 10/98
T
50WQ03FN
SCHOTTKY RECTIFIER 5.5 Amp
D-Pak (TO-252AA)
Major Ratings and Characteristics
Characteristics 50WQ03FN Units
I
Rectangular 5.5 A
F(AV)
waveform
V
RRM
I
@ tp = 5 µs sine 320 A
FSM
@ 5 Apk, TJ = 125°C 0.35 V
V
F
TJrange - 40 to 150 °C
6.73 (0.26)
6.35 (0.25)
5.46 (0.21)
5.21 (0.20)
4
1.02 (0.04)
0.64 (0.03)
1.52 (0.06)
1.15 (0.04)
2x
1.14 (0.04)
0.76 (0.03)
2.28 (0.09)
2x
123
4.57 (0.18)
1.27 (0.05)
0.88 (0.03)
6.22 (0.24)
5.97 (0.23)
0.89 (0.03)
3x
0.64 (0.02)
30 V
10.42 (0.41)
9.40 (0.37)
Description/Features
The 50WQ03FN 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
2.38 (0.09)
2.19 (0.08)
1.14 (0.04)
0.89 (0.03)
0.58 (0.02)
0.46 (0.02)
6.45 (0.24)
5.68 (0.22)
0.51 (0.02)
MIN.
0.58 (0.02)
0.46 (0.02)
MINIMUM RECOMMENDED FOOTPRIN
5.97 (0.24)
6.48 (0.26)
2x 2.54 (0.10)
1.65 (0.06)
2X
Cathode
BASE
10.67 (0.42)
2.28 (0.09)
2X
2
Conform to JEDEC outline D-Pak (Similar to TO-252AA)
Dimensions in millimeters and (inches)
1 3
Anode Anode
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50WQ03FN
PD-20551 rev. B 10/98
Voltage Ratings
Part number 50WQ03FN
VRMax. DC Reverse Voltage (V)
V
Max. Working Peak Reverse Voltage (V)
RWM
30
Absolute Maximum Ratings
Parameters 50WQ03FN Units Conditions
I
Max. Average Forward Current 5.5 A 50% duty cycle @ TC = 136 °C, rectangular wave form
F(AV)
* See Fig. 5
I
Max. Peak One Cycle Non-Repetitive 320 5µs Sine or 3µs Rect. pulse
FSM
Surge Current * See Fig. 7 130 10ms Sine or 6ms Rect. pulse
A
Following any rated
load condition and
with rated V
RRM
applied
Electrical Specifications
Parameters 50WQ03FN Units Conditions
VFMMax. Forward Voltage Drop 0.46 V @ 5A
* See Fig. 1 (1 ) 0.53 V @ 10A
0.35 V @ 5A
0.46 V @ 10A
IRMMax. Reverse Leakage Current 3 mA TJ = 25 °C
* See Fig. 2 (1 ) 58 mA T
V
Threshold Voltage 0.19 V T
F(TO)
= 125 °C
J
= TJ max.
J
rtForward Slope Resistance 22.22 mΩ
CTTypical Junction Capacitance 590 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C
LSTypical Series Inductance 5.0 n H Measured lead to lead 5mm from package body
(1) Pulse Width < 300µs, Duty Cycle < 2%
TJ = 25 °C
T
= 125 °C
J
V
= rated V
R
R
Thermal-Mechanical Specifications
Parameters 50WQ03FN Units Conditions
TJMax. Junction Temperature Range -40 to 150 °C
Max. Storage Temperature Range -40 to 150 °C
T
stg
R
Max. Thermal Resistance Junction 3.0 °C/W DC operation * See Fig. 4
thJC
to Case
wt Approximate Weight 0.3 (0.01) g (oz.)
Case Style D - PAK Similar to TO-252AA
2
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50WQ03FN
PD-20551 rev. B 10/98
100
1000
T = 150°C
100
R
J
10
125°C
100°C
1
0.1
F
10
Reverse C urr en t - I (mA)
0.01
0.001
0 5 10 15 20 25 30
Fig. 2 - Typical Values of Reverse Current
75°C
50°C
25°C
Rever se Volta ge - V (V)
R
Vs. Reverse Voltage
T = 150 °C
J
T = 125°C
Instantaneous Forward C urrent - I (A)
J
T = 25°C
J
1000
T
T = 25°C
J
1
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8
Forward Voltage Drop - V (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
10
D = 0.75
D = 0.50
D = 0.33
1
thJC
D = 0.25
D = 0.20
0.1
Single Pulse
(Thermal Resistance)
Thermal Impedance Z (°C/W)
0.01
0.00001 0.0001 0.001 0.01 0.1 1
t , Rectangular Pulse Duration (Seconds)
1
Fig. 4 - Maximum Thermal Impedance Z
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FM
Juncti on Capac i tance - C (pF)
100
0 5 10 15 20 25 30 35
Reverse Voltage - V (V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
P
DM
t
1
t
DM
2
thJC
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
J
Characteristics
thJC
R
2
1
C
3
50WQ03FN
PD-20551 rev. B 10/98
150
145
140
135
Square wave (D = 0 .50)
80% Rated V applied
130
R
125
Allowable Case Temperature - (°C)
see note (2)
120
012345678
Average Forward Current - I (A)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
1000
FSM
DC
F(AV)
At Any Rated Load Condition
And With Rated V Applied
Fol l o w ing Sur g e
RRM
3.5
2.5
D = 0.20
D = 0.25
3
D = 0.33
D = 0.50
D = 0.75
2
RMS Limit
1.5
1
Average Power Loss - (Watts)
0.5
0
012345678
Average Forward Current - I (A)
Fig. 6 - Forward Power Loss Characteristics
DC
F(AV)
(2) Formula used: TC = TJ - (Pd + Pd
Pd = Forward Power Loss = I
= Inverse Power Loss = VR1 x IR (1 - D); IR @ V
Pd
REV
F(AV)
4
Non-Repetitive Surge Current - I (A)
100
10 100 1000 10000
Square Wave Pulse Duration - t (microsec)
Fig. 7 - Maximum Non-Repetitive Surge Current
) x R
REV
x VFM @ (I
;
thJC
/ D) (see Fig. 6);
F(AV)
= 80% rated V
R1
R
p
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Marking Information
EXAMPLE: THIS IS AN 50WQ03FN
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)
11.9 (0.47)
INTERNATIONAL
RECTIFIER LOGO
ASSEMBLY
LOT CODE
1.85 (0.07)
1.65 (0.06)
1.85 (0.07)
1.65 (0.06)
DIA.
2.6 (0.10)
1.5 (0.06)
7.6 (0.30)
7.4 (0.29)
DIA.
(K)
50WQ03FN
9712
5K3A
(A) (A)
0.35 (0.01)
0.25 (0.01)
7.0 (0.28)
6.8 (0.26)
2.75 (0.11)
2.55 (0.10)
50WQ03FN
PD-20551 rev. B 10/98
PART NUMBER
DATE CODE (YYWW)
YY = YEAR
WW = WEEK
16.3 (0.64)
15.7 (0.62)
375 (14.17)
DIA. MAX.
TRR
FEED DIRECTION
TRL
FEED DIRECTION
13 (0.52) DIA.
4.1 (0.16)
3.9 (0.15)
2.1 (0.83)
1.9 (0.07)
8.1 (0.32)
7.9 (0.31)
4.1 (0.16)
3.9 (0.15)
2.1 (0.83)
1.9 (0.07)
8.1 (0.32)
7.9 (0.31)
1.85 (0.07)
1.65 (0.06)
1.85 (0.07)
1.65 (0.06)
7.6 (0.30)
7.4 (0.29)
2.6 (0.10)
1.5 (0.06)
1.85 (0.07)
1.65 (0.06)
1.85 (0.07)
1.65 (0.06)
7.6 (0.30)
7.4 (0.29)
2.6 (0.10)
1.5 (0.06)
22.4 (0.88)
50 (1.97) DIA.
DIA.
DIA.
0.35 (0.01)
0.25 (0.01)
10.6 (0.42)
10.4 (0.41)
DIA.
DIA.
2.75 (0.11)
2.55 (0.10)
0.35 (0.01)
0.25 (0.01)
10.6 (0.42)
10.4 (0.41)
2.75 (0.11)
2.55 (0.10)
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.
16.3 (0.64)
15.7 (0.62)
16.3 (0.64)
15.7 (0.62)
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5
50WQ03FN
PD-20551 rev. B 10/98
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 U.S.A. Tel: (310) 322 3331. Fax: (310) 322 3332.
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http://www.irf.com Fax-On-Demand: +44 1883 733420 Data and specifications subject to change without notice.
6
IR CANADA: 15 Lincoln Court, Brampton, Markham, Ontario L6T3Z2. Tel: (905) 453 2200. Fax: (905) 475 8801.
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