Page 1
Bulletin PD-20754 rev. C 03/03
1
1
A
STPS1045B
SCHOTTKY RECTIFIER
Major Ratings and Characteristics
Characteristics STPS1045B Units
I
Rectangular 10 A
F(AV)
waveform
V
RRM
I
@ tp = 5 µs sine 390 A
FSM
VF@ 10 Apk, TJ = 125°C 0.57 V
TJrange - 40 to 175 °C
6.73 (0.26)
6.35 (0.25)
5.46 (0.21)
5.21 (0.20)
4
1.64 (0.02)
1
2
.52 (0.06)
.15 (0.04)
1.14 (0.04)
2x
0.76 (0.03)
2.28 (0.09)
2x
6.22 (0.24)
5.97 (0.23)
3
3x
4.57 (0.18)
45 V
1.27 (0.05)
0.88 (0.03)
10.42 (0.41)
0.89 (0.03)
0.64 (0.02)
2.38 (0.09)
2.19 (0.08)
9.40 (0.37)
1 - Anode
2 - Cathode
3 - Anode
4 - Cathode
10 Amp
D-Pak (TO-252AA)
Description/ Features
The STPS1045B 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
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 FOOTPRINT
5.97 (0.24)
6.48 (0.26)
2x
2.54 (0.10)
1.65 (0.06)
2x
10.67 (0.42)
2.28 (0.09)
Base
Cathode
2x
4, 2
Conform to JEDEC outline D-Pak (Similar to TO-252AA)
Dimensions in millimeters and (inches)
node
1
Anode
3
1www.irf.com
Page 2
STPS1045B
Bulletin PD-20754 rev. C 03/03
Voltage Ratings
Part number STPS1045B
VRMax. DC Reverse Voltage (V) 45
V
Max. Working Peak Reverse Voltage (V)
RWM
Absolute Maximum Ratings
Parameters Value Units Conditions
I
Max. Average Forward Current 10 A 50% duty cycle @ TC = 151°C, rectangular wave form
F(AV)
* See Fig. 5
I
Max. Peak One Cycle Non-Repetitive 390 5µs Sine or 3µs Rect. pulse
FSM
Surge Current * See Fig. 7 75 10ms Sine or 6ms Rect. pulse
EASNon-Repetitive Avalanche Energy 20 mJ T
A
= 25 °C, I
J
= 3.0 Amps, L = 4.40 mH
AS
IARRepetitive Avalanche Current 3.0 A Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Following any rated
load condition and with
rated V
RRM
applied
Electrical Specifications
Parameters Value Units Conditions
VFMMax. Forward Voltage Drop 0.63 V @ 10A TJ = 25 °C
* See Fig. 1 (1) 0.84 V @ 20A
0.57 V @ 10A TJ = 125 °C
0.72 V @ 20A
IRMMax. Reverse Leakage Current 0.2 mA TJ = 25 °C VR = rated V
* See Fig. 2 (1) 15 mA TJ = 125 °C
C TTypical Junction Capacitance 760 pF V R = 5V DC (test signal range 100Khz to 1Mhz) 25 °C
LSTypical Series Inductance 5.0 nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change 10000 V/ µs (Rated VR)
(1) Pulse Width < 300µs, Duty Cycle < 2%
R
Thermal-Mechanical Specifications
Parameters Value Units Conditions
TJMax. Junction Temper. Range (*) - 40 to 175 °C
T
Max. Storage Temperature Range - 40 to 175 °C
stg
R
Max. Thermal Resistance Junction 3.0 °C/W DC operation * See Fig. 4
thJC
to Case
R
Max. Thermal Resistance Junction 50 °C/W
thJA
to Ambient
wt Approximate Weight 0.3 (0.01) g (oz.)
Case Style D - PAK Similar to TO-252AA
(*) dPtot 1
< thermal runaway condition for a diode on its own heatsink
dTj Rth( j-a)
2
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Page 3
STPS1045B
Bulletin PD-20754 rev. C 03/03
100
(A)
F
10
Instantaneous Forward Current - I
Tj = 175˚C
Tj = 125˚C
Tj = 25˚C
1000
T = 175˚C
100
10
1
J
150˚C
125˚C
100˚C
75˚C
0.1
0.01
Reverse Current (mA)
50˚C
25˚C
0.001
0.0001
0 1020304050
Reverse Voltage - VR (V)
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
10000
(pF)
T
T = 25˚C
J
1000
Junction Capacitance C
1
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Forward Voltage Drop - V
FM
(V)
Fig. 1 - Maximum Forward Voltage Drop
100
0 1020304050
Fig. 3 - Typical Junction Capacitance
Characteristics
10
0.1
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
Single Pulse
(Thermal Resistance)
P
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
(°C/W)
thJC
Thermal Impedance - Z
0.01
0.00001 0.0001 0.001 0.01 0.1 1 10
t1, Rectangular Pulse Duration (Seconds)
Fig. 4 - Maximum Thermal Impedance Z
Characteristics
thJC
Reverse Voltage - VR (V)
Vs. Reverse Voltage
DM
t
1
t
2
3www.irf.com
Page 4
STPS1045B
Bulletin PD-20754 rev. C 03/03
180
170
DC
160
Square wave (D = 0.50)
150
80% Rated Vr applied
Allowable Case Temperature (°C)
see note (2)
140
0 2 4 6 8 10 12 14 16
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
1000
FSM
100
(A)
16
14
12
RMS Limit
10
8
6
4
Average Power Loss (Watts)
2
DC
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
0
0 2 4 6 8 10 12 14 16
Average Forward Current - I
Fig. 6 - Forward Power Loss Characteristics
(A)
F(AV)
(2) Formula used: TC = TJ - (Pd + Pd
Pd = Forward Power Loss = I
Pd
= Inverse Power Loss = VR1 x IR (1 - D); IR @ V
REV
4
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
Non-Repetitive Surge Current - I
10
10 100 1000 10000
Square Wave Pulse Duration - t
Fig. 7 - Maximum Non-Repetitive Surge Current
) x R
thJC
x VFM @ (I
;
F(AV)
REV
F(AV)
(microsec)
/ D) (see Fig. 6);
= 80% rated V
R1
R
p
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Page 5
Marking Information
EXAMPLE: THIS IS A STPS1045B
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)
2.6 (0.10)
1.5 (0.06)
DIA.
STPS1045B
7.6 (0.30)
7.4 (0.29)
DIA.
4 (K)
712A
5K3A
2 (K)
1 (A) 3 (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)
STPS1045B
Bulletin PD-20754 rev. C 03/03
PART NUMBER
DATE CODE (YWWA)
Y = YEAR
WW = WEEK
A = LINE
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)
5www.irf.com
Page 6
STPS1045B
Bulletin PD-20754 rev. C 03/03
This product has been designed and qualified for Industrial Level.
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
6
Data and specifications subject to change without notice.
Qualification Standards can be found on IR's Web site.
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 03/03
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