Vishay 40L15CT, 40L15CTS, 40L15CT-1 Data Sheet
Bulletin PD-20568 rev. E 09/01
A
A
A
40L15CT
40L15CTS
40L15CT-1
SCHOTTKY RECTIFIER 2 x 20 Amps
Major Ratings and Characteristics Description/Features
The center tap Schottky rectifier module has been optimized for
Characteristics Values Units
I
Rectangular 40 A
F(AV)
waveform
V
RRM
I
@ tp = 5 µs sine 700 A
FSM
VF@ 19 Apk, TJ=125°C 0.25 V
(per leg, Typical)
T
J
15 V
- 55 to 125 °C
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 TJ operation (VR < 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
40L15CT
Base
Common
Cathode
2
2
1
Common
Cathode
node
TO-220AB
3
Anode
Case Styles
40L15CTS
Base
Common
Cathode
2
2
1
Common
Cathode
node
2
D
PAK
3
Anode
40L15CT-1
Base
Common
Cathode
2
2
1
Common
Cathode
node
TO-262
3
Anode
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40L15CT, 40L15CTS, 40L15CT-1
Bulletin PD-20568 rev. E 09/01
Voltage Ratings
Part number Values
VRMax. DC Reverse Voltage (V) @ TJ = 100 °C
V
Max. Working Peak Reverse Voltage (V) @ TJ = 100 °C
RWM
15
Absolute Maximum Ratings
Parameters Values Units Conditions
I
Max. Average Forward (Per Leg) 20 A 50% duty cycle @ TC = 85°C, rectangular wave form
F(AV)
Current * See Fig. 5 (Per Device) 40
I
Max. Peak One Cycle Non-Repetitive 700 5µs Sine or 3µs Rect. pulse
FSM
Surge Current (Per Leg) * See Fig. 7 330 10ms Sine or 6ms Rect. pulse
EASNon-Repetitive Avalanche Energy 10 mJ T
(Per Leg)
A
= 25 °C, I
J
= 2 Amps, L = 6 mH
AS
IARRepetitive Avalanche Current 2 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 Values Units Conditions
Typ. Max.
VFMForward Voltage Drop - 0.41 V @ 19A
(Per Leg) * See Fig. 1 (1) - 0.52 V @ 40A
0.25 0.33 V @ 19A
0.37 0.50 V @ 40A
I
Reverse Leakage Current - 10 mA TJ = 25 °C
RM
(Per Leg) * See Fig. 2 (1) - 600 mA TJ = 100 °C
V
Threshold Voltage 0.182 V T
F(TO)
r
Forward Slope Resistance 7.6 mΩ
t
J
= T
J
CTMax. Junction Capacitance (Per Leg) - 2000 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance (Per Leg) 8 - nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change 10,000 V/ µs
(Rated VR)
TJ = 25 °C
TJ = 125 °C
VR = rated V
R
max.
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters Values Units Conditions
TJMax. Junction Temperature Range -55 to 125 °C
T
Max. Storage Temperature Range -55 to 150 °C
stg
R
Max. Thermal Resistance 1.5 °C/W DC operation * See Fig. 4
thJC
Junction to Case (Per Leg)
R
Typical Thermal Resistance 0.50 °C/W Mounting surface , smooth and greased
thCS
Case to Heatsink Only for TO-220
R
Max. Thermal Resistance 40 °C/W DC operation
thJA
Junction to Ambient For D2Pak and TO-262
wt Approximate Weight 2 (0.07) g (oz.)
T Mounting Torque Min. 6 (5) Non-lubricated threads
Max. 12 (10)
Kg-cm
(Ibf-in)
2
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1000
40L15CT, 40L15CTS, 40L15CT-1
Bulletin PD-20568 rev. E 09/01
1000
T = 100 C
J
100
R
75 C
100
F
T = 125 C
10
Instantaneous Forward Current - I (A)
1
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Forward Vo lta ge Drop - V (V)
J
T = 75 C
J
T = 25 C
J
FM
Fig. 1 - Maximum Forward Voltage Drop Characteristics
10
10
50 C
25 C
1
Reverse Current - I (mA)
0.1
03691215
Reverse Voltage - V (V)
R
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
10000
T
T = 25 C
J
1000
Junction Capa citan ce - C (pF)
100
0 5 10 15 20
Reverse Voltage - V (V)
R
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Therm al Impedanc e Z ( C/W)
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thJC
D = 0.50
D = 0.33
D = 0.25
D = 0.20
0.1
Single Pulse
(Thermal Resistance)
Notes:
1. Duty factor D = t / t
2. Pe ak T = P x Z + T
0.01
0.00001 0.0001 0.001 0.01 0.1 1 10 100
t , Rectangular Pu lse Duration (Seco nd s)
Fig. 4 - Maximum Thermal Impedance Z
1
thJC
P
DM
t
J
DM
Characteristics
1
t
2
1
thJC
D = 0.75
1
2
C
3
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