Bulletin PD-20793 rev. A 11/06
40L15CWPbF
SCHOTTKY RECTIFIER
2 x 20 Amps
I
F(AV)
= 40Amp
V
R
= 15V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
I
FSM
@ tp = 5
μs
sine
V
F
T
J
@ 19 Apk, T
J
=125°C
Description/ Features
Units
A
V
A
V
The 40L15CWPbF center tap Schottky rectifier module has
been optimized for ultra low forward voltage drop specifically
for the OR-ing of parallel power supplies. The proprietary
barrier technology allows for reliable operation up to 125 °C
junction temperature. Typical applications are in parallel
switching power supplies, converters, reverse battery protec-
tion, and redundant power subsystems.
125°C T
J
operation (V
R
< 5V)
Center tap module
Optimized for OR-ing applications
Ultra low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Lead-Free ("PbF" suffix)
Values
40
15
700
0.25
(per leg, Typical)
- 55 to 125
°C
Case Styles
Base
Common
Cathode
2
1
3
2
Anode
1
Anode
2
TO-247AC
Common
Cathode
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40L15CWPbF
Bulletin PD-20793 rev. A 11/06
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
@ T
J
= 100 °C
V
RWM
Max. Working Peak Reverse Voltage (V) @ T
J
= 100 °C
40L15CWPbF
15
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward
Current
I
FSM
E
AS
I
AR
(Per Leg)
* See Fig. 5 (Per Device)
40L15CW
Units
20
40
700
330
10
2
A
mJ
A
A
Conditions
50% duty cycle @ T
C
= 86°C, rectangular wave form
5μs Sine or 3μs Rect. pulse
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
T
J
= 25 °C, I
AS
= 2 Amps, L = 5 mH
Current decaying linearly to zero in 1
μsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Electrical Specifications
Parameters
V
FM
Forward Voltage Drop
(Per Leg) * See Fig. 1
40L15CW
Units
Typ.
-
-
0.25
0.37
-
(1)
-
Max.
0.41
0.52
0.33
0.50
10
600
7.6
-
8
2000
-
V
V
V
V
mA
mA
V
mΩ
pF
nH
@ 19A
@ 40A
@ 19A
@ 40A
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
(1)
I
RM
Reverse Leakage Current
(Per Leg) * See Fig. 2
T
J
= 25 °C
T
J
= 100 °C
T
J
=
T
J
max.
V
F(TO)
Threshold Voltage
r
t
C
T
L
S
Forward Slope Resistance
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
0.182
V
R
= 5V
DC
(test signal range 100Khz to 1Mhz) 25°C
Measured lead to lead 5mm from package body
(1) Pulse Width < 300μs, Duty Cycle <2%
dv/dt Max. Voltage Rate of Change
10000
V/
μs
(Rated V
R
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
40L15CW
Units
-55 to 125
-55 to 150
1.4
0.7
0.24
6 (0.21)
Min.
Max.
6 (5)
12 (10)
°C
°C
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
to Heatsink
wt
T
Approximate Weight
Mounting Torque
Case Style
Marking Device
°C/W DC operation
°C/W DC operation
* See Fig. 4
°C/W Mounting surface , smooth and greased
g (oz.)
Kg-cm Non-lubricated threads
(Ibf-in)
TO-247AC (TO-3P) JEDEC
40L15CW
2
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40L15CWPbF
Bulletin PD-20793 rev. A 11/06
1000
1000
T = 100°C
J
100
75°C
50°C
Reverse Current - I
R
(mA)
10
25°C
1
Instantaneous Forward Current - I
F
(A)
100
0.1
0
3
6
9
12
15
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
10000
Junction Capacitance - C
T
(pF)
10
T = 125°C
J
T = 75°C
J
T = 25°C
J
T
J
= 25°C
1000
1
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
100
0
5
10
15
20
Forward Voltage Drop - V
FM
(V)
Reverse Voltage - V
R
(V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
10
T
hermal Impedance Z
thJC
(°C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
0.1
Notes:
S
ingle Pulse
(T
hermal Resistance)
0.01
0.00001
0.0001
0.001
0.01
0.1
t1
t2
1. Duty factor D = t 1/ t 2
2. Peak T = P x Z
thJC
+ T
C
J
DM
1
10
100
t 1 , Rec tangular Pulse Duration (S
econds)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
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40L15CWPbF
Bulletin PD-20793 rev. A 11/06
100
Allowable Case T
emperature - (°C)
Average Power Los - (Watts)
s
95
90
85
80
75
70
S
quare wave (D = 0.50)
14
12
10
8
6
4
2
0
0
5
10
15
20
25
Average Forward Current - I
F(AV)
(A)
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMSLimit
DC
0
5
10
15
20
25
30
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
Fig. 6 - Forward Power Loss Characteristics
1000
Non-R
epetitive S
urge Current - I
FS
(A)
M
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following S
urge
100
10
100
1000
10000
S
quare Wave Pulse Duration - t p (micros
ec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
HIGH-S
PEED
S CH
WIT
FREE-WHEEL
DIODE
40HF
L40S
02
+
DUT
IR
FP460
R = 25 ohm
g
Vd = 25 Volt
CURR
ENT
MONIT
OR
Fig. 8 - Unclamped Inductive Test Circuit
4
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40L15CWPbF
Bulletin PD-20793 rev. A 11/06
Outline Table
Conform to JEDEC outline TO-247AC (TO-3P)
Dimensions in millimeters and (inches)
Marking Information
EXAMPLE: THIS IS A 40L15CW
WITH ASSEMBLY
LOT CODE 5657
ASSEMBLED ON WW 35, 2000
IN ASSEMBLY LINE "H"
INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
PART NUMBER
40L15CW
P035H
56
57
DATE CODE
P = LEAD-FREE
YEAR 0 = 2000
WEEK 35
LINE H
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