Document Number: 94168 For technical questions, contact: diodestech@vishay.com www.vishay.com
Revision: 12-Mar-10 1
Schottky Rectifier, 20 A
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Vishay High Power Products
FEATURES
• 150 °C TJ 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
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.
PRODUCT SUMMARY
IF(AV) 20 A
VR35 V to 45 V
Base
cathode
D2PAK N/C Anode
13
2
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL CHARACTERISTICS VALUES UNITS
IF(AV) Rectangular waveform 20 A
VRRM Range 35 to 45 V
IFSM tp = 5 μs sine 1800 A
VF20 Apk, TJ = 125 °C 0.51 V
TJRange - 55 to 150 °C
VOLTAGE RATINGS
PARAMETER SYMBOL VS-20TQ035SPbF VS-20TQ040SPbF VS-20TQ045SPbF UNITS
Maximum DC reverse voltage VR35 40 45 V
Maximum working peak reverse voltage VRWM
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum average forward current
See fig. 5 IF(AV) 50 % duty cycle at TC = 116 °C, rectangular waveform 20
A
Maximum peak one cycle
non-repetitive surge current
See fig. 7
IFSM
5 μs sine or 3 μs rect. pulse Following any rated load
condition and with rated
VRRM applied
1800
10 ms sine or 6 ms rect. pulse 400
Non-repetitive avalanche energy EAS TJ = 25 °C, IAS = 4 A, L = 3.40 mH 27 mJ
Repetitive avalanche current IAR
Current decaying linearly to zero in 1 μs
Frequency limited by TJ maximum VA = 1.5 x VR typical 4A
www.vishay.com For technical questions, contact: diodestech@vishay.com Document Number: 94168
2Revision: 12-Mar-10
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Vishay High Power Products Schottky Rectifier, 20 A
Note
(1) Pulse width < 300 μs, duty cycle < 2 %
ELECTRICAL SPECIFICATIONS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum forward voltage drop
See fig. 1 VFM (1)
20 A TJ = 25 °C 0.57
V
40 A 0.73
20 A TJ = 125 °C 0.51
40 A 0.67
Maximum reverse leakage current
See fig. 2 IRM (1) TJ = 25 °C VR = Rated VR
2.7 mA
TJ = 125 °C 105
Maximum junction capacitance CTVR = 5 VDC (test signal range 100 kHz to 1 MHz), 25 °C 1400 pF
Typical series inductance LSMeasured lead to lead 5 mm from package body 8.0 nH
Maximum voltage rate of change dV/dt Rated VR10 000 V/μs
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum junction and storage
temperature range TJ, TStg - 55 to 150 °C
Maximum thermal resistance,
junction to case RthJC DC operation
See fig. 4 1.50
°C/W
Typical thermal resistance,
case to heatsink RthCS Mounting surface, smooth and greased 0.50
Approximate weight 2g
0.07 oz.
Mounting torque minimum 6 (5) kgf ⋅ cm
(lbf ⋅ in)
maximum 12 (10)
Marking device Case style D2PAK 20TQ045S
Document Number: 94168 For technical questions, contact: diodestech@vishay.com www.vishay.com
Revision: 12-Mar-10 3
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Schottky Rectifier, 20 A Vishay High Power Products
Fig. 1 - Maximum Forward Voltage Drop Characteristics Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics
0.1
10
100
1
1000
IF - Instantaneous
Forward Current (A)
VFM - Forward Voltage Drop (V)
0.2 0.6 1.2 1.6 1.81.40.80.40 1.0
TJ = 150 °C
TJ = 125 °C
TJ = 25 °C
0.001
1
100
10
0.1
0.01
1000
I
R
- Reverse Current (mA)
V
R
- Reverse Voltage (V)
515 30
40 45
352010025
TJ = 125 °C
TJ = 150 °C
TJ = 100 °C
TJ = 75 °C
TJ = 50 °C
TJ = 25 °C
100
10 000
C
T
- Junction Capacitance (pF)
V
R
- Reverse Voltage (V)
10 20 30 40050
TJ = 25 °C
0.001
0.1
0.01
1
10
0.00001 0.0001 0.001 0.01 0.1 1
t1 - Rectangular Pulse Duration (s)
ZthJC - Thermal Impedance (°C/W)
10 100
Single pulse
(thermal resistance)
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
PDM
t1
t2
Notes:
1. Duty factor D = t1/t2
2. Peak TJ = PDM x ZthJC + TC
www.vishay.com For technical questions, contact: diodestech@vishay.com Document Number: 94168
4Revision: 12-Mar-10
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Vishay High Power Products Schottky Rectifier, 20 A
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current
Fig. 6 - Forward Power Loss Characteristics
Fig. 7 - Maximum Non-Repetitive Surge Current
Fig. 8 - Unclamped Inductive Test Circuit
115
145
135
125
155
Allowable Case Temperature (°C)
IF(AV) - Average Forward Current (A)
52025
30
10015
20TQ
RthJC (DC) = 1.50 °C/W
DC
0
8
6
4
2
18
16
14
12
10
Average Power Loss (W)
I
F(AV)
- Average Forward Current (A)
515 302010025
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS limit
DC
100
1000
10 000
IFSM - Non-Repetitive Surge Current (A)
tp - Square Wave Pulse Duration (µs)
100 10 000
100010
At any rated load condition
and with rated VRRM applied
following surge
Current
monitor
High-speed
switch
D.U.T.
Rg = 25 Ω
+
Freewheel
diode Vd = 25 V
L
IRFP460
40HFL40S02
Document Number: 94168 For technical questions, contact: diodestech@vishay.com www.vishay.com
Revision: 12-Mar-10 5
VS-20TQ035SPbF, VS-20TQ040SPbF, VS-20TQ045SPbF
Schottky Rectifier, 20 A Vishay High Power Products
ORDERING INFORMATION TABLE
035 = 35 V
040 = 40 V
045 = 45 V
2- Current rating (20 A)
3- Package: T = TO-220
4- Schottky “Q” series
5- Voltage ratings
- S = D2PAK
6
7- None = Tube (50 pieces)
TRL = Tape and reel (left oriented)
TRR = Tape and reel (right oriented)
- PbF = Lead (Pb)-free
8
1- HPP product suffix
Device code
51 324
678
VS- 20 T Q 045 S TRL PbF
LINKS TO RELATED DOCUMENTS
Dimensions www.vishay.com/doc?95014
Part marking information www.vishay.com/doc?95008
Packaging information www.vishay.com/doc?95032
Document Number: 95014 For technical questions concerning discrete products, contact: diodes-tech@vishay.com www.vishay.com
Revision: 31-Mar-09 For technical questions concerning module products, contact: ind-modules@vishay.com 1
D2PAK, TO-262
Outline Dimensions
Vishay High Power Products
DIMENSIONS FOR D2PAK in millimeters and inches
Notes
(1) Dimensioning and tolerancing per ASME Y14.5 M-1994
(2) Dimension D and E do not include mold flash. Mold flash shall not
exceed 0.127 mm (0.005") per side. These dimensions are
measured at the outmost extremes of the plastic body
(3) Thermal pad contour optional within dimension E, L1, D1 and E1
(4) Dimension b1 and c1 apply to base metal only
(5) Datum A and B to be determined at datum plane H
(6) Controlling dimension: inch
(7) Outline conforms to JEDEC outline TO-263AB
SYMBOL MILLIMETERS INCHES NOTES SYMBOL MILLIMETERS INCHES NOTES
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
A 4.06 4.83 0.160 0.190 D1 6.86 8.00 0.270 0.315 3
A1 0.00 0.254 0.000 0.010 E 9.65 10.67 0.380 0.420 2, 3
b 0.51 0.99 0.020 0.039 E1 7.90 8.80 0.311 0.346 3
b1 0.51 0.89 0.020 0.035 4 e 2.54 BSC 0.100 BSC
b2 1.14 1.78 0.045 0.070 H 14.61 15.88 0.575 0.625
b3 1.14 1.73 0.045 0.068 4 L 1.78 2.79 0.070 0.110
c 0.38 0.74 0.015 0.029 L1 - 1.65 - 0.066 3
c1 0.38 0.58 0.015 0.023 4 L2 1.27 1.78 0.050 0.070
c2 1.14 1.65 0.045 0.065 L3 0.25 BSC 0.010 BSC
D 8.51 9.65 0.335 0.380 2 L4 4.78 5.28 0.188 0.208
c
B
Detail A
c2
AA
A
± 0.004 B
M
A
Lead tip
(3)
(3)
View A - A
(E)
(D1)
E1
B
H
A1
Detail “A”
Rotated 90 °CW
Scale: 8:1
L
Gauge
plane
0° to 8°
L3
L4
Seating
plane
Section B - B and C - C
Scale: None
(4)
(4)
(b, b2)
b1, b3
(c) c1
Base
Metal
Plating
Conforms to JEDEC outline D2PAK (SMD-220)
132
D
C
A
L2
E
(2)(3)
(2)
4
H
BB
2 x b
2 x b2
L1
0.010 AB
MM
(3)
e
2 x
Pad layout
MIN.
11.00
(0.43)
MIN.
9.65
(0.38)
MIN.
3.81
(0.15)
MIN.
2.32
(0.08)
17.90 (0.70)
15.00 (0.625)
2.64 (0.103)
2.41 (0.096)
Lead assignments
Diodes
1. - Anode (two die)/open (one die)
2., 4. - Cathode
3. - Anode
www.vishay.com For technical questions concerning discrete products, contact: diodes-tech@vishay.com Document Number: 95014
2 For technical questions concerning module products, contact: ind-modules@vishay.com Revision: 31-Mar-09
Outline Dimensions
Vishay High Power Products D2PAK, TO-262
DIMENSIONS FOR TO-262 in millimeters and inches
Notes
(1) Dimensioning and tolerancing as per ASME Y14.5M-1994
(2) Dimension D and E do not include mold flash. Mold flash shall not
exceed 0.127 mm (0.005") per side. These dimensions are
measured at the outmost extremes of the plastic body
(3) Thermal pad contour optional within dimension E, L1, D1 and E1
(4) Dimension b1 and c1 apply to base metal only
(5) Controlling dimension: inches
(6) Outline conform to JEDEC TO-262 except A1 (maximum), b
(minimum) and D1 (minimum) where dimensions derived the
actual package outline
SYMBOL MILLIMETERS INCHES NOTES
MIN. MAX. MIN. MAX.
A 4.06 4.83 0.160 0.190
A1 2.03 3.02 0.080 0.119
b 0.51 0.99 0.020 0.039
b1 0.51 0.89 0.020 0.035 4
b2 1.14 1.78 0.045 0.070
b3 1.14 1.73 0.045 0.068 4
c 0.38 0.74 0.015 0.029
c1 0.38 0.58 0.015 0.023 4
c2 1.14 1.65 0.045 0.065
D 8.51 9.65 0.335 0.380 2
D1 6.86 8.00 0.270 0.315 3
E 9.65 10.67 0.380 0.420 2, 3
E1 7.90 8.80 0.311 0.346 3
e 2.54 BSC 0.100 BSC
L 13.46 14.10 0.530 0.555
L1 - 1.65 - 0.065 3
L2 3.56 3.71 0.140 0.146
(4)
(4) Base
metal
Plating b1, b3
(b, b2)
c1
c
Section B - B and C - C
Scale: None
Section A - A
(3)
E1
(3)D1
E
B
A
A
A
c2
c
A1
Seating
plane
Lead tip
(3)
(2) (3)
(2)
A
E
(Datum A)
L1
L2
BB
CC
3
2
1
L
D
2 x e
3 x b2
3 x b
0.010 A B
MM
Modified JEDEC outline TO-262
Lead assignments
Diodes
1. - Anode (two die)/open (one die)
2., 4. - Cathode
3. - Anode
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Revision: 02-Oct-12 1Document Number: 91000
Disclaimer
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“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
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definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
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Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
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requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
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VS-20TQ040STRLPBF VS-20TQ035STRLPBF VS-20TQ045STRLPBF VS-20TQ045STRRPBF VS-20TQ035SPBF
VS-20TQ040SPBF 20TQ035 20TQ035S 20TQ035STRL 20TQ035STRR 20TQ040 20TQ040S 20TQ040STRL
20TQ040STRR 20TQ045 20TQ045S 20TQ045STRL 20TQ045STRR VS-20TQ045SPBF VS-20TQ040STRRPBF
VS-20TQ035STRRPBF
