VS-20CTQ...PbF Series, VS-20CTQ...-N3 Series
www.vishay.com
Vishay Semiconductors
Schottky Rectifier, 2 x 10 A
Base 2
common
cathode
FEATURES
• 175 °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
• Compliant to RoHS Directive 2002/95/EC
• Designed and qualified according to JEDEC-JESD47
Anode
TO-220AB
Anode
2
1 Common 3
cathode
PRODUCT SUMMARY
Package
I
F(AV)
V
R
V
F
at I
F
I
RM
max.
T
J
max.
Diode variation
E
AS
TO-220AB
2 x 10 A
35 V, 40 V, 45 V
0.57 V
15 mA at 125 °C
175 °C
Common cathode
13 mJ
• Halogen-free according to IEC 61249-2-21 definition
(-N3 only)
DESCRIPTION
The VS-20CTQ... center tap Schottky rectifier series
has been optimized for low reverse leakage at high
temperature. The proprietary barrier technology allows for
reliable operation up to 175 °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
10 A
pk
, T
J
= 125 °C (per leg)
Range
VALUES
20
35 to 45
1060
0.57
- 55 to 175
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC
reverse voltage
Maximum working
peak reverse
voltage
SYMBOL
V
R
35
V
RWM
35
40
40
45
45
V
VS-
VS-
VS-
VS-
VS-
VS-
UNITS
20CTQ035PbF 20CTQ035-N3 20CTQ040PbF 20CTQ040-N3 20CTQ045PbF 20CTQ045-N3
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Maximum average forward current
See fig. 5
Maximum peak one cycle non-repetitive
surge current per leg
See fig. 7
Non-repetitive avalanche energy per leg
Repetitive avalanche current per leg
SYMBOL
I
F(AV)
TEST CONDITIONS
50 % duty cycle at T
C
= 145 °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
1060
265
13
2.0
mJ
A
A
UNITS
T
J
= 25 °C, I
AS
= 2.0 A, L = 6.5 mH
Current decaying linearly to zero in 1 μs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
Revision: 25-Aug-11
Document Number: 94162
1
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
VS-20CTQ...PbF Series, VS-20CTQ...-N3 Series
www.vishay.com
Vishay Semiconductors
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
10 A
Maximum forward voltage drop per leg
See fig. 1
V
FM (1)
20 A
10 A
20 A
Maximum reverse leakage current per leg
See fig. 2
Maximum junction capacitance per leg
Typical series inductance per leg
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
0.64
0.76
0.57
0.68
2
15
900
8.0
10 000
mA
pF
nH
V/µs
V
UNITS
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 per leg
Maximum thermal resistance,
junction to case per package
Typical thermal resistance,
case to heatsink
Approximate weight
minimum
maximum
SYMBOL
T
J
, T
Stg
DC operation
See fig. 4
DC operation
R
thCS
Mounting surface, smooth and greased
TEST CONDITIONS
VALUES
- 55 to 175
3.25
1.63
0.50
2
0.07
6 (5)
12 (10)
g
oz.
kgf · cm
(lbf · in)
°C/W
UNITS
°C
R
thJC
Mounting torque
20CTQ035
Marking device
Case style TO-220AB
20CTQ040
20CTQ045
Revision: 25-Aug-11
Document Number: 94162
2
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
VS-20CTQ...PbF Series, VS-20CTQ...-N3 Series
www.vishay.com
Vishay Semiconductors
1000
I
F
- Instantaneous Forward Current (A)
1000
100
I
R
- Reverse Current (mA)
100
10
1
0.1
T
J
= 175 °C
T
J
= 150 °C
T
J
= 125 °C
T
J
= 100 °C
10
1
T
J
= 175 °C
T
J
= 125 °C
T
J
= 25 °C
T
J
= 75 °C
0.01
0.001
0.0001
T
J
= 25 °C
0
5
10
15
T
J
= 50 °C
0.1
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
20
25
30
35
40
45
V
FM
- Forward Voltage Drop (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
(Per Leg)
V
R
- Reverse Voltage (V)
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage (Per Leg)
1000
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 (Per Leg)
Z
thJC
- Thermal Impedance (°C/W)
10
1
0.1
0.01
Single pulse
(thermal resistance)
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
P
DM
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
0.001
0.00001
0.0001
0.001
0.01
t
1
- Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics (Per Leg)
Revision: 25-Aug-11
Document Number: 94162
3
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
VS-20CTQ...PbF Series, VS-20CTQ...-N3 Series
www.vishay.com
Vishay Semiconductors
9
180
Allowable Case Temperature (°C)
Average Power Loss (W)
175
170
165
160
155
150
145
0
5
20CTQ
R
thJC
(DC) = 3.25 °C/W
8
7
6
5
4
3
2
1
0
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS limit
DC
DC
10
15
0
5
10
15
I
F(AV)
- Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
I
F(AV)
- Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
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 (Per Leg)
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
Revision: 25-Aug-11
Document Number: 94162
4
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
VS-20CTQ...PbF Series, VS-20CTQ...-N3 Series
www.vishay.com
ORDERING INFORMATION TABLE
Device code
Vishay Semiconductors
VS-
1
-
-
-
20
2
C
3
T
4
Q
5
045 PbF
6
7
1
2
3
4
5
6
7
Vishay Semiconductors product
Current rating (20 = 20 A)
Circuit configuration
C = Common cathode
-
Package
T = TO-220
-
-
Schottky “Q” series
Voltage rating
Environmental digit
-
035 = 35 V
040 = 40 V
045 = 45 V
PbF = Lead (Pb)-free and RoHS compliant
-N3 = Halogen-free, RoHS compliant, and totally lead (Pb)-free
ORDERING INFORMATION
(Example)
PREFERRED P/N
VS-20CTQ035PbF
VS-20CTQ035-N3
VS-20CTQ040PbF
VS-20CTQ040-N3
VS-20CTQ045PbF
VS-20CTQ045-N3
QUANTITY PER T/R
50
50
50
50
50
50
MINIMUM ORDER QUANTITY
1000
1000
1000
1000
1000
1000
PACKAGING DESCRIPTION
Antistatic plastic tube
Antistatic plastic tube
Antistatic plastic tube
Antistatic plastic tube
Antistatic plastic tube
Antistatic plastic tube
LINKS TO RELATED DOCUMENTS
Dimensions
Part marking information
TO-220AB PbF
TO-220AB -N3
www.vishay.com/doc?95222
www.vishay.com/doc?95225
www.vishay.com/doc?95028
Revision: 25-Aug-11
Document Number: 94162
5
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
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