Bulletin PD-20794 rev. A 11/06
40L40CWPbF
40L45CWPbF
SCHOTTKY RECTIFIER
2 x 20 Amps
IF(AV) = 40Amp
VR = 40-45V
Description/ Features
Major Ratings and Characteristics
The 40L..CWPbF 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.
Characteristics
40L..CW
Units
IF(AV) Rectangular
waveform
40
A
40 - 45
V
IFSM @ tp = 5 μs sine
1240
A
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
VF
0.42
V
Very low forward voltage drop
°C
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
VRRM
150° C TJ operation
Center tap TO-247 package
@ 20 Apk, TJ=125°C
(per leg, Typical)
TJ
- 55 to 150
Lead-Free ("PbF" suffix)
Case Styles
Base
Common
Cathode
2
1
Anode
1
3
2
Anode
2
Common
Cathode
TO-247AC
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40L45CWPbF revA.pmd
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40L40CWPbF, 40L45CWPbF
Bulletin PD-20794 rev. A 11/06
Voltage Ratings
Part number
VR
40L40CWPbF
40L45CWPbF
40
45
Max. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward
Current
IFSM
* See Fig. 5
40L..CW Units
(Per Leg)
20
(Per Device)
40
A
Max. Peak One Cycle Non-Repetitive
1240
A
Surge Current (Per Leg) * See Fig. 7
350
EAS
Non-Repetitive Avalanche Energy
(Per Leg)
20
mJ
IAR
Repetitive Avalanche Current
(Per Leg)
3
A
Conditions
50% duty cycle @ TC = 122 °C, rectangular wave form
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated VRRM applied
5μs Sine or 3μs Rect. pulse
TJ = 25 °C, IAS = 3 Amps, L = 4.4 mH
Current decaying linearly to zero in 1 μsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
VFM
IRM
Forward Voltage Drop
(Per Leg) * See Fig. 1
40L..CW Units
(1)
Reverse Leakage Current
(Per Leg) * See Fig. 2
(1)
Conditions
Typ.
0.48
0.61
0.42
0.60
Max.
0.53
0.69
0.49
0.70
-
1.5
mA
TJ = 25 °C
20
80
mA
TJ = 100 °C
TJ = TJ max.
V
V
V
V
@ 20A
@ 40A
@ 20A
@ 40A
TJ = 25 °C
TJ = 125 °C
VR = rated VR
VF(TO) Threshold Voltage
0.27
V
rt
Forward Slope Resistance
8.72
mΩ
CT
Max. Junction Capacitance (Per Leg)
-
1500
pF
VR = 5VDC (test signal range 100Khz to 1Mhz) 25°C
LS
Typical 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
(1) Pulse Width < 300μs, Duty Cycle <2%
Parameters
40L..CW Units
TJ
Max. Junction Temperature Range
-55 to 150
Tstg
Max. Storage Temperature Range
-55 to 150
Conditions
°C
°C
RthJC Max. Thermal Resistance Junction
to Case (Per Leg)
1.6
°C/W DC operation
RthJC Max. Thermal Resistance Junction
to Case (Per Package)
0.8
°C/W DC operation
RthCS Typical Thermal Resistance, Case
to Heatsink
0.24
°C/W Mounting surface , smooth and greased
wt
Approximate Weight
T
Mounting Torque
6 (0.21)
Case Style
Min.
6 (5)
Max.
12 (10)
* See Fig. 4
g (oz.)
Kg-cm Non-lubricated threads
(Ibf-in)
TO-247AC(TO-3P) JEDEC
Marking Device
40L40CW
40L45CW
2
40L45CWPbF revA.pmd
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21-Nov-06, 11:05
40L40CWPbF, 40L45CWPbF
Bulletin PD-20794 rev. A 11/06
1000
1000
TJ = 150°C
Reverse Current - I R (mA)
100
125°C
100°C
10
75°C
1
50°C
0.1
25°C
0.01
0.001
10
0.2
0.4
0.6
0.8
1
1.2
10 15 20 25 30 35 40 45
10000
TJ= 25°C
0
5
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
TJ= 125°C
1
0
Reverse Voltage - VR (V)
TJ= 150°C
Junction Capacitance - C T (pF)
Instantaneous Forward Current - I F (A)
100
1.4
1.6
TJ = 25°C
1000
100
1.8
0
10
Forward Voltage Drop - VFM (V)
20
30
40
50
Reverse Voltage - VR (V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
Thermal Impedance ZthJC (°C/ W)
10
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
PDM
t1
0.1
Single Pulse
(Thermal Resistanc e)
0.01
0.00001
0.0001
0.001
0.01
t2
Notes:
1. Duty factor D = t 1 / t 2
2. Peak TJ = PDM x ZthJC + TC
0.1
1
10
100
t , Rec ta ngular Pulse Duration (Sec onds)
1
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
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40L45CWPbF revA.pmd
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40L40CWPbF, 40L45CWPbF
Bulletin PD-20794 rev. A 11/06
18
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
16
Average Power Loss - (Watts)
Allowable Case Temperature - (°C)
150
140
DC
130
Square wave (D = 0.50)
80% Rated VR applied
120
110
14
12
RMSLimit
10
DC
8
6
4
2
see note (2)
0
0
5
10
15
20
25
30
0
5
10
15
20
25
30
Average Forward Current - I F(AV) (A)
Average Forward Current - I F(AV)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
Non-Repetitive Surge Current - I FSM (A)
100
(A)
10000
At Any Rated Load Condition
And With Rated V RRM Applied
Following Surge
1000
100
10
100
1000
10000
Square Wave Pulse Duration - t p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
IRFP460
DUT
Rg = 25 ohm
CURRENT
MONITOR
HIGH-SPEED
SWITCH
FREE-WHEEL
DIODE
+
Vd = 25 Volt
40HFL40S02
Fig. 8 - Unclamped Inductive Test Circuit
(2) Formula used: TC = TJ - (Pd + PdREV) x RthJC ;
Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR
4
40L45CWPbF revA.pmd
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21-Nov-06, 11:05
40L40CWPbF, 40L45CWPbF
Bulletin PD-20794 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 40L45CW
WITH ASSEMBLY
LOT CODE 5657
ASSEMBLED ON WW 35, 2000
IN ASSEMBLY LINE "H"
INTERNATIONAL
RECTIFIER
LOGO
PART NUMBER
40L45CW
P035H
56
57
ASSEMBLY
LOT CODE
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40L45CWPbF revA.pmd
DATE CODE
P = LEAD-FREE
YEAR 0 = 2000
WEEK 35
LINE H
5
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21-Nov-06, 11:05
40L40CWPbF, 40L45CWPbF
Bulletin PD-20794 rev. A 11/06
Ordering Information Table
Device Code
40
L
45
C
W
PbF
1
2
3
4
5
6
1
-
Current Rating (40 = 40A)
2
-
Schottky "L" Series
3
-
Voltage Code
4
-
Circuit Configuration
5
-
6
-
40 = 40V
45 = 45V
C = Common Cathode
Package
W = TO-247
y none = Standard Production
y PbF = Lead-Free
Tube Standard Pack Quantity : 25 pieces
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level and Lead-Free.
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. 11/06
6
40L45CWPbF revA.pmd
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21-Nov-06, 11:05