Document Number: 94213 For technical questions, contact: diodestech@vishay.com www.vishay.com
Revision: 15-Mar-10 1
Schottky Rectifier, 2 x 20 A
VS-40CTQ045SPbF, VS-40CTQ045-1PbF
Vishay High Power Products
FEATURES
• 150 °C TJ operation
• Center tap configuration
• Very 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
This center tap Schottky rectifier 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) 2 x 20 A
VR45 V
VS-40CTQ045SPbF
D
2
PAK TO-262
VS-40CTQ045-1PbF
Base
common
cathode
A
node Anode
Common
cathode
13
2
2
Base
common
cathode
Anode Anode
Common
cathode
13
2
2
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL CHARACTERISTICS VALUES UNITS
IF(AV) Rectangular waveform 40 A
VRRM 45 V
IFSM tp = 5 μs sine 1240 A
VF20 Apk, TJ = 125 °C (per leg) 0.48 V
TJRange - 55 to 150 °C
VOLTAGE RATINGS
PARAMETER SYMBOL VS-40CTQ045SPbF
VS-40CTQ045-1PbF UNITS
Maximum DC reverse voltage VR45 V
Maximum working peak reverse voltage VRWM
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum average
forward current
See fig. 5
per leg
IF(AV) 50 % duty cycle at TC = 116 °C, rectangular waveform
20
A
per device 40
Maximum peak one cycle non-repetitive
surge current per leg
See fig. 7
IFSM
5 μs sine or 3 μs rect. pulse Following any rated load
condition and with rated
VRRM applied
1240
10 ms sine or 6 ms rect. pulse 350
Non-repetitive avalanche energy per leg EAS TJ = 25 °C, IAS = 3 A, L = 4.40 mH 20 mJ
Repetitive avalanche current per leg IAR
Current decaying linearly to zero in 1 μs
Frequency limited by TJ maximum VA = 1.5 x VR typical 3A
www.vishay.com For technical questions, contact: diodestech@vishay.com Document Number: 94213
2Revision: 15-Mar-10
VS-40CTQ045SPbF, VS-40CTQ045-1PbF
Vishay High Power Products Schottky Rectifier, 2 x 20 A
Note
(1) Pulse width < 300 μs, duty cycle < 2 %
ELECTRICAL SPECIFICATIONS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum forward voltage drop per leg
See fig. 1 VFM (1)
20 A TJ = 25 °C 0.53
V
40 A 0.68
20 A TJ = 125 °C 0.48
40 A 0.67
Maximum reverse leakage current per leg
See fig. 2 IRM (1) TJ = 25 °C VR = Rated VR
3mA
TJ = 125 °C 115
Threshold voltage VF(TO) TJ = TJ maximum 0.27 V
Forward slope resistance rt8.72 mΩ
Maximum junction capacitance per leg CTVR = 5 VDC (test signal range 100 kHz to 1 MHz), 25 °C 2800 pF
Typical series inductance per leg 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 per leg RthJC DC operation
2.0
°C/W
Maximum thermal resistance,
junction to case per package 1.0
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 40CTQ045S
Case style TO-262 40CTQ045-1
Document Number: 94213 For technical questions, contact: diodestech@vishay.com www.vishay.com
Revision: 15-Mar-10 3
VS-40CTQ045SPbF, VS-40CTQ045-1PbF
Schottky Rectifier, 2 x 20 A Vishay High Power Products
Fig. 1 - Maximum Forward Voltage Drop Characteristics
(Per Leg)
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage (Per Leg)
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics (Per Leg)
1
100
10
1000
I
F
- Instantaneous Forward Current (A)
V
FM
- Forward Voltage Drop (V)
0.2 0.4 0.6 0.8 1.0 1.41.2 1.8
01.6
TJ = 150 °C
TJ = 125 °C
TJ = 25 °C
0.001
1
10
100
0.1
0.01
1000
I
R
- Reverse Current (mA)
V
R
- Reverse Voltage (V)
1051520 40 45
25 30 35
0
TJ = 150 °C
TJ = 125 °C
TJ = 100 °C
TJ = 75 °C
TJ = 50 °C
TJ = 25 °C
100
1000
10 000
C
T
- Junction Capacitance (pF)
V
R
- Reverse Voltage (V)
2010 30 40 50
0
TJ = 25 °C
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1
t1 - Rectangular Pulse Duration (s)
ZthJC - Thermal Impedance (°C/W)
10
Single pulse
(thermal resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
PDM
t1
t2
Notes:
1. Duty factor D = t1/t2
2. Peak TJ = PDM x ZthJC + TC
100
www.vishay.com For technical questions, contact: diodestech@vishay.com Document Number: 94213
4Revision: 15-Mar-10
VS-40CTQ045SPbF, VS-40CTQ045-1PbF
Vishay High Power Products Schottky Rectifier, 2 x 20 A
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)
Fig. 8 - Unclamped Inductive Test Circuit
Note
(1) Formula used: TC = TJ - (Pd + PdREV) x RthJC;
Pd = Forward power loss = IF(AV) x VFM at (IF(AV)/D) (see fig. 6);
PdREV = Inverse power loss = VR1 x IR (1 - D); IR at VR1 = 10 V
100
105
110
115
120
125
130
135
140
150
145
Allowable Case Temperature (°C)
I
F(AV)
- Average Forward Current (A)
105152030025
DC
See note (1)
Square wave (D = 0.50)
80 % rated VR applied
0
2
4
6
8
10
12
14
16
18
Average Power Loss (W)
I
F(AV)
- Average Forward Current (A)
1051520
3025
0
DC
RMS limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
100
1000
10 000
IFSM - Non-Repetitive Surge Current (A)
tp - Square Wave Pulse Duration (µs)
100 1000 10 000
10
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: 94213 For technical questions, contact: diodestech@vishay.com www.vishay.com
Revision: 15-Mar-10 5
VS-40CTQ045SPbF, VS-40CTQ045-1PbF
Schottky Rectifier, 2 x 20 A Vishay High Power Products
ORDERING INFORMATION TABLE
2- Current rating (40 A)
3- Circuit configuration: C = Common cathode
4- T = TO-220
5- Schottky “Q” series
6- Voltage rating (045 = 45 V)
7- S = D2PAK
-1 = TO-262
8- None = Tube (50 pieces)
TRL = Tape and reel (left oriented - for D2PAK only)
TRR = Tape and reel (right oriented - for D2PAK only)
- PbF = Lead (Pb)-free
9
1- HPP product suffix
Device code
51 324
6789
VS- 40 C 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: 91000 www.vishay.com
Revision: 18-Jul-08 1
Disclaimer
Legal Disclaimer Notice
Vishay
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
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applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
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