Bulletin PD-20568 rev. E 09/01
40L15CT
40L15CTS
40L15CT-1
SCHOTTKY RECTIFIER
2 x 20 Amps
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
(per leg, Typical)
Description/Features
Units
A
V
A
V
The 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 protection, 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
Values
40
15
700
0.25
- 55 to 125
°C
Case Styles
40L15CT
40L15CTS
40L15CT-1
Base
Common
Cathode
2
Base
Common
Cathode
2
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
Anode
TO-220AB
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D
2
PAK
TO-262
1
40L15CT, 40L15CTS, 40L15CT-1
Bulletin PD-20568 rev. E 09/01
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
Values
15
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward
Current
* See Fig. 5
(Per Leg)
(Per Device)
Values
20
40
700
330
10
2
Units
A
Conditions
50% duty cycle @ T
C
= 85°C, rectangular wave form
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
T
J
= 25 °C, I
AS
= 2 Amps, L = 6 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
I
FSM
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
E
AS
I
AR
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
A
mJ
A
Electrical Specifications
Parameters
V
FM
Forward Voltage Drop
(Per Leg) * See Fig. 1
Values
Typ. Max.
(1)
-
-
0.25
0.37
-
(1)
-
7.6
-
8
2000
-
0.41
0.52
0.33
0.50
10
600
Units
V
V
V
V
mA
mA
V
mΩ
pF
nH
V/ µs
@ 19A
@ 40A
@ 19A
@ 40A
T
J
= 25 °C
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
Reverse Leakage Current
(Per Leg) * See Fig. 2
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
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
10,000
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
Values
-55 to 125
-55 to 150
1.5
0.50
40
2 (0.07)
Min.
Max.
6 (5)
12 (10)
Units
°C
°C
Conditions
R
thJC
Max. Thermal Resistance
Junction to Case
(Per Leg)
R
thCS
Typical Thermal Resistance
Case to Heatsink
R
thJA
Max. Thermal Resistance
Junction to Ambient
wt
T
Approximate Weight
Mounting Torque
°C/W DC operation
* See Fig. 4
°C/W Mounting surface , smooth and greased
Only for TO-220
°C/W DC operation
For D
2
Pak and TO-262
g (oz.)
Kg-cm Non-lubricated threads
(Ibf-in)
2
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40L15CT, 40L15CTS, 40L15CT-1
Bulletin PD-20568 rev. E 09/01
1 00 0
10 0 0
T
J
= 100 C
100
75 C
50 C
Reverse C urren t - I
R
(m A)
10
25 C
1
Instan ta n eo us Forw ard C ur ren t - I
F
(A )
100
0 .1
0
3
6
9
12
15
Reverse V oltag e - V
R
(V )
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
1 00 0 0
Jun ction C a pa cita n ce - C
T
(pF)
T
J
= 12 5 C
T
J
= 7 5 C
T
J
= 2 5 C
10
T
J
= 25 C
1 0 00
1
0
0 .2
0 .4
0.6
0.8
1
1 .2
1.4
1 .6
Forw a rd V olta ge D rop - V
FM
(V )
100
0
5
10
15
20
Reverse V olta ge - V
R
(V )
Fig. 1 - Maximum Forward Voltage Drop Characteristics
10
Th erm a l Im pedance Z
thJC
( C /W )
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
D
D
D
D
D
=
=
=
=
=
0 .75
0 .50
0 .33
0 .25
0 .2 0
P
D M
0 .1
Sin gle Pu lse
(Therm a l Resista n ce)
Notes:
t1
t2
1. D uty factor D = t 1/ t 2
2. Peak T
J
= P
D M
x Z
thJC
+ T
C
0 .1
1
10
100
0 .0 1
0.00 00 1
0 .00 0 1
0 .0 01
0.0 1
t 1 , Re ctan g ular Pu lse D ura tio n (Seco nd s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
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3
40L15CT, 40L15CTS, 40L15CT-1
Bulletin PD-20568 rev. E 09/01
1 00
Allow a b le Ca se Te m pera t ure - ( C )
A vera ge Pow er Loss - (W a tts)
95
90
85
80
75
se e no te ( 2)
14
12
10
8
6
4
2
0
0
4
8
12
16
20
24
0
5
10
15
20
25
30
A vera ge Forw ard C urren t - I
F(AV)
(A)
A vera ge Forw a rd C urren t - I
F(AV)
(A)
D
D
D
D
D
=
=
=
=
=
0.20
0.25
0.33
0.50
0.75
RM S Lim it
DC
Squa re w ave (D = 0.50)
70
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
1000
Non-Repetitive Surge C urrent - I
FSM
(A)
Fig. 6 - Forward Power Loss Characteristics
At An y Rated Load C ond ition
An d W ith Rated V
RRM
Ap plied
Follow in g Surg e
100
10
100
1000
10000
Sq uare W ave Pulse D uration - t p (m icrosec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
H IG H -SPE ED
SW ITC H
FREE-W HE EL
D IO D E
40H FL40S02
V d = 25 V olt
D UT
IRFP460
Rg = 25 ohm
+
C UR RE N T
M O N ITO R
Fig. 8 - Unclamped Inductive Test Circuit
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 80% rated V
R
4
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40L15CT, 40L15CTS, 40L15CT-1
Bulletin PD-20568 rev. E 09/01
Outline Table
10.54 (0.41)
MAX.
3.78 (0.15)
3.54 (0.14)
15.24 (0.60)
14.84 (0.58)
1 2 3
14.09 (0.55)
13.47 (0.53)
3.96 (0.16)
3.55 (0.14)
2.04 (0.080) MAX.
1.40 (0.05)
1.15 (0.04)
0.94 (0.04)
0.69 (0.03)
1
2
Common
Cathode
3
1.32 (0.05)
DIA.
6.48 (0.25)
6.23 (0.24)
2°
1.22 (0.05)
2.92 (0.11)
2.54 (0.10)
TERM 2
0.10 (0.004)
Base
Common
Cathode
2.89 (0.11)
2.64 (0.10)
2
Anode
Anode
1 2 3
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) MAX.
5.08 (0.20) REF.
Conform to JEDEC outline TO-220AB
Dimensions in millimeters and (inches)
10.16 (0.40)
REF.
4.69 (0.18)
4.20 (0.16)
1.32 (0.05)
6.47 (0.25)
15.49 (0.61)
1.22 (0.05)
93°
6.18 (0.24)
14.73 (0.58)
2.61 (0.10)
2.32 (0.09)
8.89 (0.35)
5.28 (0.21)
4.78 (0.19)
0.55 (0.02)
0.46 (0.02)
Base
Common
Cathode
2
3X
1.40 (0.055)
REF.
0.93 (0.37)
0.69 (0.27)
1.14 (0.045)
2X
MINIMUM RECOMMENDED FOOTPRINT
11.43 (0.45)
1
2
Common
Cathode
3
4.57 (0.18)
4.32 (0.17)
3
8.89 (0.35)
1
2
17.78 (0.70)
3.81 (0.15)
2.08 (0.08)
2X
Anode
Anode
0.61 (0.02) MAX.
5.08 (0.20) REF.
2.54 (0.10)
2X
Conform to JEDEC outline D Pak (SMD-220)
Dimensions in millimeters and (inches)
2
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5
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