VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Vishay High Power Products
Schottky Rectifier, 20 A
FEATURES
Base
cathode
2
•
•
•
•
•
D
2
PAK
1
N/C
3
Anode
•
•
•
150 °C T
J
operation
Low forward voltage drop
High frequency operation
High purity, high temperature epoxy
encapsulation for enhanced mechanical
strength and moisture resistance
Guard ring for enhanced ruggedness and long
term reliability
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
PRODUCT SUMMARY
I
F(AV)
V
R
20 A
35 V to 45 V
DESCRIPTION
The VS-20TQ... Schottky rectifier series 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, converters,
freewheeling diodes, and reverse battery protection.
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
I
F(AV)
V
RRM
I
FSM
V
F
T
J
CHARACTERISTICS
Rectangular waveform
Range
t
p
= 5 μs sine
20 Apk, T
J
= 125 °C
Range
VALUES
20
35 to 45
1800
0.51
- 55 to 150
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
Maximum working peak reverse voltage
SYMBOL
V
R
V
RWM
VS-20TQ035SPbF
35
VS-20TQ040SPbF
40
VS-20TQ045SPbF
45
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
= 116 °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
Following any rated load
condition and with rated
V
RRM
applied
VALUES
20
1800
400
27
4
mJ
A
A
UNITS
T
J
= 25 °C, I
AS
= 4 A, L = 3.40 mH
Current decaying linearly to zero in 1 μs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
Document Number: 94168
Revision: 12-Mar-10
For technical questions, contact:
diodestech@vishay.com
www.vishay.com
1
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Vishay High Power Products
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
20 A
Maximum forward voltage drop
See fig. 1
V
FM (1)
40 A
20 A
40 A
Maximum reverse leakage current
See fig. 2
Maximum junction capacitance
Typical series inductance
Maximum voltage rate of change
Note
(1)
Pulse width < 300 μs, duty cycle < 2 %
I
RM (1)
C
T
L
S
dV/dt
T
J
= 25 °C
T
J
= 125 °C
TEST CONDITIONS
T
J
= 25 °C
T
J
= 125 °C
V
R
= Rated V
R
VALUES
0.57
0.73
0.51
0.67
2.7
105
1400
8.0
10 000
mA
pF
nH
V/μs
V
UNITS
Schottky Rectifier, 20 A
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
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER
Maximum junction and storage
temperature range
Maximum thermal resistance,
junction to case
Typical thermal resistance,
case to heatsink
Approximate weight
minimum
maximum
Case style D
2
PAK
SYMBOL
T
J
, T
Stg
R
thJC
R
thCS
DC operation
See fig. 4
Mounting surface, smooth and greased
TEST CONDITIONS
VALUES
- 55 to 150
1.50
°C/W
0.50
2
0.07
6 (5)
12 (10)
g
oz.
kgf
⋅
cm
(lbf
⋅
in)
UNITS
°C
Mounting torque
Marking device
20TQ045S
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For technical questions, contact:
diodestech@vishay.com
Document Number: 94168
Revision: 12-Mar-10
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Schottky Rectifier, 20 A
Vishay High Power Products
1000
1000
I
R
- Reverse Current (mA)
100
10
T
J
= 150 °C
T
J
= 125 °C
T
J
= 100 °C
I
F -
Instantaneous
Forward Current (A)
100
10
T
J
= 150 °C
T
J
= 125 °C
T
J
= 25 °C
1
0.1
0.01
0.001
T
J
= 75 °C
T
J
= 50 °C
T
J
= 25 °C
1
0.1
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
5
10
15
20
25
30
35
40
45
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
100
0
10
20
30
40
50
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
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
t
1
t
2
0.01
Single pulse
(thermal resistance)
0.001
0.00001
0.0001
0.001
0.01
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
t
1
- Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
Document Number: 94168
Revision: 12-Mar-10
For technical questions, contact:
diodestech@vishay.com
www.vishay.com
3
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Vishay High Power Products
155
Schottky Rectifier, 20 A
18
Allowable Case Temperature (°C)
Average Power Loss (W)
20TQ
R
thJC
(DC) = 1.50 °C/W
145
16
14
12
10
8
6
4
2
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS limit
135
DC
125
DC
115
0
0
5
10
15
20
25
30
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)
10 000
At any rated load condition
and
with
rated V
RRM
applied
following surge
1000
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
www.vishay.com
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For technical questions, contact:
diodestech@vishay.com
Document Number: 94168
Revision: 12-Mar-10
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Schottky Rectifier, 20 A
ORDERING INFORMATION TABLE
Device code
Vishay High Power Products
VS-
1
1
2
3
4
5
6
7
-
-
-
-
-
-
-
20
2
T
3
Q
4
045
5
S
6
TRL PbF
7
8
HPP product suffix
Current rating (20 A)
Package: T = TO-220
Schottky “Q” series
Voltage ratings
S = D
2
PAK
None = Tube (50 pieces)
TRL = Tape and reel (left oriented)
TRR = Tape and reel (right oriented)
035 = 35 V
040 = 40 V
045 = 45 V
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: 94168
Revision: 12-Mar-10
For technical questions, contact:
diodestech@vishay.com
www.vishay.com
5
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