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A
Bulletin PD-20621 05/01
STPS40L45CW
SCHOTTKY RECTIFIER
Major Ratings and Characteristics
Characteristics Value Units
I
Rectangular 40 A
F(AV)
waveform
V
RRM
I
@ tp = 5 µs sine 1240 A
FSM
VF@ 20 Apk, TJ=125°C 0.42 V
(per leg, Typical)
T
J
15.90 (0 .626)
15.30 (0 .602)
20.30 (0 .800)
19.70 (0 .775)
12 3
14. 80 ( 0.583)
14. 20 (0 .559 )
1.40 (0 .056)
1.00 (0 .039)
10.94 ( 0.430)
10.86 (0 .427)
45 V
- 55 to 150 °C
3.65 (0 .144)
3. 55 (0 .13 9)
5.70 (0 .225)
5.30 (0.208)
4.30 (0 .170)
3.70 (0 .145)
2. 20 (0 .08 7)
MAX.
DIA.
5.50 (0.217)
4.50 (0 .177)
(2 PLCS.)
2 x 20 Amps
TO-247AC
Description/Features
The STPS40L45CW center tap Schottky rectifier has been
optimized for very low forward voltage drop, with moderate
leakage. The proprietary barrier technology allows for reliable
operation up to 150° C junction temperature. Typical applications are in switching power supplies.
150° C TJ operation
Center tap TO-247 package
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
5.30 (0 .209)
4.70 (0. 185)
0.80 (0.032)
0.40 (0 .213)
Conform to JEDEC outline TO-247AC (TO-3P)
Dimensions in millimeters and inches
2.5 ( 0.098 )
1.5 (0. 059)
2. 40 (0 .09 5)
MAX.
BASE
COMMON
CATHODE
2
123
NODE
COMMON
ANODE
CATHODE
12
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STPS40L45CW
Bulletin PD-20621 05/01
Voltage Ratings
Part number STPS40L45CW
VRMax. DC Reverse Voltage (V)
V
Max. Working Peak Reverse Voltage (V)
RWM
45
Absolute Maximum Ratings
Parameters Value Units Conditions
I
Max. Average Forward (Per Leg) 20 A 50% duty cycle @ TC = 122 °C, rectangular wave form
F(AV)
Current * See Fig. 5 (Per Device) 40
I
Max. Peak One Cycle Non-Repetitive 1240 5µs Sine or 3µs Rect. pulse
FSM
Surge Current (Per Leg) * See Fig. 7 350 10ms Sine or 6ms Rect. pulse
EASNon-Repetitive Avalanche Energy 20 mJ T
(Per Leg)
A
= 25 °C, I
J
= 3 Amps, L = 4.4 mH
AS
IARRepetitive Avalanche Current 3 A Current decaying linearly to zero in 1 µsec
(Per Leg) 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
Typ. Max.
VFMForward Voltage Drop 0.48 0.53 V @ 20A
(Per Leg) * See Fig. 1 (1) 0.61 0.69 V @ 40A
0.42 0.49 V @ 20A
0.60 0.70 V @ 40A
IRMReverse Leakage Current - 1.5 mA TJ = 25 °C
(Per Leg) * See Fig. 2 (1) 20 80 mA TJ = 100 °C
V
Threshold Voltage 0.27 V T
F(TO)
r
Forward Slope Resistance 8.72 mΩ
t
J
= T
max.
J
CTMax. Junction Capacitance (Per Leg) - 1500 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance (Per Leg) 7.5 - nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change 10000 V/ µs
(Rated VR)
Thermal-Mechanical Specifications
TJ = 25 °C
TJ = 125 °C
VR = rated V
(1) Pulse Width < 300µs, Duty Cycle <2%
R
Parameters 40L45CW Units Conditions
TJMax. Junction Temperature Range -55 to 150 °C
T
Max. Storage Temperature Range -55 to 150 °C
stg
R
Max. Thermal Resistance Junction 1.6 °C/W DC operation * See Fig. 4
thJC
to Case (Per Leg)
R
Max. Thermal Resistance Junction 0.8 °C/W DC operation
thJC
to Case (Per Package)
R
Typical Thermal Resistance, Case 0.24 °C/W Mounting surface , smooth and greased
thCS
to Heatsink
wt Approximate Weight 6 (0.21) g (oz.)
T Mounting Torque Min. 6 (5) Non-lubricated threads
Max. 12 (10)
Kg-cm
(Ibf-in)
Case Style TO-247AC(TO-3P) JEDEC
2
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Page 3
STPS40L45CW
Bulletin PD-20621 05/01
1000
1000
100
T = 150 C
J
125 C
10
R
1
100 C
75 C
50 C
0.1
100
F
T = 150 C
J
T = 125 C
J
T = 25 C
J
10
In stan taneous F orward Cu rrent - I (A)
Reverse Curre nt - I (mA)
0.01
0.001
0 5 10 15 20 25 30 35 40 45
Fig. 2 - Typical Values Of Reverse Current
10000
T
25 C
Reverse Voltage - V (V)
R
Vs. Reverse Voltage (Per Leg)
T = 25 C
J
1000
1
0 0 .2 0.4 0.6 0.8 1 1 .2 1.4 1.6 1.8
Fig. 1 - Max. Forward Voltage Drop Characteristics
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Junction Capacitance - C (pF)
100
0 1020304050
Forward Voltage Drop - V (V)
FM
Reverse Voltage - V (V)
Fig. 3 - Typical Junction Capacitance
(Per Leg)
10
D = 0.75
1
thJC
Th erma l Im peda nce Z ( C/W )
D = 0.50
D = 0.33
D = 0.25
D = 0.20
0.1
0.01
0.00001 0.0001 0.001 0.01 0.1 1 10 100
Fig. 4 - Max. Thermal Impedance Z
Sing le Pu lse
(Therma l Resistance)
t , Rectangular Pulse D uration (Seconds)
1
Characteristics (Per Leg)
thJC
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
Vs. Reverse Voltage (Per Leg)
P
DM
t
1
t
2
1
DM
thJ C
J
R
2
C
3
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STPS40L45CW
Bulletin PD-20621 05/01
150
140
130
Square wave (D = 0.50)
120
80% Rated V applied
R
110
Allowable Case Temperature - ( C)
see note (2)
100
0 5 10 15 20 25 30
Avera ge Forw a rd Cu rrent - I (A )
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
10000
FSM
1000
DC
F(AV)
At Any Rated Load Condition
An d With Rate d V Applied
Following Surge
RRM
18
D = 0.20
16
D = 0.25
D = 0.33
14
D = 0.50
D = 0.75
12
10
RMS Limit
8
6
4
Average Power Loss - (Watts)
2
0
0 5 10 15 20 25 30
Avera ge Forward Current - I (A)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
DC
F(AV)
DUT
CURRENT
MONITOR
(2) Formula used: TC = TJ - (Pd + Pd
Pd = Forward Power Loss = I
Pd
= Inverse Power Loss = VR1 x IR (1 - D); IR @ V
REV
F(AV)
4
No n-Rep etitive Surge Current - I (A)
100
10 100 1000 10000
Square W ave Pulse D uration - t (microsec)
p
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
HIGH-SPEED
IRFP460
Rg = 25 ohm
SW ITC H
FREE-WHEEL
DIODE
40HFL40S02
Fig. 8 - Unclamped Inductive Test Circuit
) x R
REV
x VFM @ (I
;
thJC
/ D) (see Fig. 6);
F(AV)
= 80% rated V
R1
R
Vd = 25 Volt
+
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Page 5
STPS40L45CW
Bulletin PD-20621 05/01
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level.
Qualification Standards can be found on IR's Web site.
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 05/01
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