VS-20L15TSPbF
Vishay High Power Products
Schottky Rectifier, 20 A
FEATURES
Base
cathode
2
•
•
•
•
•
3
Anode
D PAK
2
1
N/C
•
•
•
•
•
20 A
15 V
600 mA at 100 °C
PRODUCT SUMMARY
I
F(AV)
V
R
I
RM
125 °C T
J
operation (V
R
< 5 V)
Single diode configuration
Optimized for OR-ing applications
Ultralow forward voltage drop
Guard ring for enhanced ruggedness and long
term reliability
High purity, high temperature epoxy
encapsulation for enhanced mechanical
strength and moisture resistance
Meets MSL level 1, per J-STD-020, LF maximum peak of
260 °C
Halogen-free according to IEC 61249-2-21 definition
Compliant to RoHS directive 2002/95/EC
AEC-Q101 qualified
DESCRIPTION
The 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.
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
I
F(AV)
V
RRM
I
FSM
V
F
T
J
t
p
= 5 μs sine
19 Apk, T
J
= 125 °C (typical)
Range
CHARACTERISTICS
Rectangular waveform
VALUES
20
15
700
0.25
- 55 to 125
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
Maximum working peak reverse voltage
SYMBOL
V
R
V
RWM
TEST CONDITIONS
T
J
= 100 °C
VS-20L15TSPbF
15
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Maximum average forward current
See fig. 5
Maximum peak one cycle non-repetitive
surge current
See fig. 7
Non-repetitive avalanche energy
Repetitive avalanche current
SYMBOL
I
F(AV)
TEST CONDITIONS
50 % duty cycle at T
C
= 85 °C, rectangular waveform
5 μs sine or 3 μs rect. pulse
I
FSM
10 ms sine or 6 ms rect. pulse
E
AS
I
AR
T
J
= 25 °C, I
AS
= 2 A, L = 6 mH
Current decaying linearly to zero in 1 μs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
Following any rated load
condition and with rated
V
RRM
applied
VALUES
20
700
330
10
2
mJ
A
A
UNITS
Document Number: 94166
Revision: 12-Mar-10
For technical questions, contact:
diodestech@vishay.com
www.vishay.com
1
VS-20L15TSPbF
Vishay High Power Products
Schottky Rectifier, 20 A
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
19 A
Forward voltage drop
See fig. 1
V
FM (1)
40 A
19 A
40 A
Reverse leakage current
See fig. 2
Threshold voltage
Forward slope resistance
Maximum junction capacitance
Typical series inductance
Maximum voltage rate of change
I
RM (1)
V
F(TO)
r
t
C
T
L
S
dV/dt
T
J
= 25 °C
T
J
= 100 °C
T
J
= T
J
maximum
V
R
= 5 V
DC
, (test signal range 100 kHz to 1 MHz), 25 °C
Measured lead to lead 5 mm from package body
Rated V
R
-
8
10 000
TEST CONDITIONS
T
J
= 25 °C
T
J
= 125 °C
V
R
= Rated V
R
TYP.
-
-
0.25
0.37
-
-
0.182
7.6
2000
-
MAX.
0.41
0.52
0.33
0.50
10
600
mA
V
mΩ
pF
nH
V/μs
V
UNITS
Note
(1)
Pulse width < 300 μs, duty cycle < 2 %
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER
Maximum junction
temperature range
Maximum storage
temperature range
Maximum thermal resistance,
junction to case
Typical thermal resistance,
case to heatsink
Maximum thermal resistance,
junction to ambient
Approximate weight
minimum
maximum
SYMBOL
T
J
T
Stg
R
thJC
R
thCS
R
thJA
DC operation
See fig. 4
Mounting surface, smooth and greased
(For TO-220)
DC operation
TEST CONDITIONS
VALUES
- 55 to 125
°C
- 55 to 150
1.5
0.50
40
2
0.07
Non-lubricated threads
Case style D
2
PAK
6 (5)
12 (10)
20L15TS
g
oz.
kgf
⋅
cm
(lbf
⋅
in)
°C/W
UNITS
Mounting torque
Marking device
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For technical questions, contact:
diodestech@vishay.com
Document Number: 94166
Revision: 12-Mar-10
VS-20L15TSPbF
Schottky Rectifier, 20 A
Vishay High Power Products
1000
1000
I
R
- Reverse Current (mA)
T
J
= 100 °C
100
I
F
- Instantaneous
Forward Current (A)
100
T
J
= 75 °C
T
J
= 50 °C
10
10
T
J
= 125 °C
T
J
= 75 °C
T
J
= 25 °C
T
J
= 25 °C
1
1
0.1
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
3
6
9
12
15
V
FM
- Forward Voltage Drop (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
V
R
- Reverse Voltage (V)
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage
10 000
C
T
- Junction Capacitance (pF)
T
J
= 25 °C
1000
100
0
5
10
15
20
V
R
- Reverse Voltage (V)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage
Z
thJC
- Thermal Impedance (°C/W)
10
1
P
DM
0.1
Single pulse
(themal resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
t
1
t
2
Notes:
1. Duty factor D = t
1
/t
2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
0.1
1
10
100
0.01
0.00001
0.0001
0.001
0.01
t
1
- Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
Document Number: 94166
Revision: 12-Mar-10
For technical questions, contact:
diodestech@vishay.com
www.vishay.com
3
VS-20L15TSPbF
Vishay High Power Products
Schottky Rectifier, 20 A
100
95
90
14
Allowable Case Temperature (°C)
Average Power Loss (W)
12
10
8
6
4
2
0
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
Square wave (D = 0.50)
85
80
75
RMS limit
See note (1)
70
DC
0
4
8
12
16
20
24
0
5
10
15
20
25
30
I
F(AV)
- Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current
I
F(AV)
- Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics
I
FSM
- Non-Repetitive Surge Current (A)
1000
At any rated load condition
and with rated V
RRM
applied
following surge
100
10
100
1000
10 000
t
p
- Square Wave Pulse Duration (µs)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
High-speed
switch
Freewheel
diode
40HFL40S02
+ V
d
= 25 V
D.U.T.
IRFP460
R
g
= 25
Ω
Current
monitor
Fig. 8 - Unclamped Inductive Test Circuit
Note
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward power loss = I
F(AV)
x V
FM
at (I
F(AV)
/D) (see fig. 6);
Pd
REV
= Inverse power loss = V
R1
x I
R
(1 - D); I
R
at V
R1
= 80 % rated V
R
(1)
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For technical questions, contact:
diodestech@vishay.com
Document Number: 94166
Revision: 12-Mar-10
VS-20L15TSPbF
Schottky Rectifier, 20 A
Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
VS-
1
1
2
3
4
5
6
7
-
-
-
-
-
-
-
20
2
L
3
15
4
T
5
S
6
TRL PbF
7
8
HPP product suffix
Current rating (20 A)
L = Low V
F
Voltage rating (15 = 15 V)
T = Schottky series
S = D
2
PAK
None = Tube (50 pieces)
TRL = Tape and reel (left oriented)
TRR = Tape and reel (right oriented)
8
-
PbF = Lead (Pb)-free
LINKS TO RELATED DOCUMENTS
Dimensions
Part marking information
Packaging information
www.vishay.com/doc?95014
www.vishay.com/doc?95008
www.vishay.com/doc?95032
Document Number: 94166
Revision: 12-Mar-10
For technical questions, contact:
diodestech@vishay.com
www.vishay.com
5
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