43CTQ...
Vishay High Power Products
Schottky Rectifier, 2 x 20 A
FEATURES
• 175 °C T
J
operation
Base 2
common
cathode
• Center tap configuration
• Low forward voltage drop
• High frequency operation
• Guard ring for enhanced ruggedness and long term
reliability
Anode
TO-220AB
Anode
2
1 Common 3
cathode
• High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
• Designed and qualified for industrial level
DESCRIPTION
PRODUCT SUMMARY
I
F(AV)
V
R
2 x 20 A
80/100 V
This 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
t
p
= 5 µs sine
20 Apk, T
J
= 125 °C (per leg)
Range
CHARACTERISTICS
Rectangular waveform
VALUES
40
80/100
850
0.67
- 55 to 175
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
Maximum working peak reverse voltage
SYMBOL
V
R
V
RWM
43CTQ080
80
43CTQ100
100
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Maximum average
forward current
See fig. 5
per leg
I
F(AV)
per device
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
50 % duty cycle at T
C
= 135 °C, rectangular waveform
40
850
A
275
7.50
0.50
mJ
A
SYMBOL
TEST CONDITIONS
VALUES
20
A
UNITS
Maximum peak one cycle
non-repetitive surge current per leg
See fig. 7
Non-repetitive avalanche energy per leg
Repetitive avalanche current per leg
T
J
= 25 °C, I
AS
= 0.50 A, L = 60 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: 93917
Revision: 21-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
1
43CTQ...
Vishay High Power Products
Schottky Rectifier, 2 x 20 A
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
20 A
Maximum forward voltage drop per leg
See fig. 1
V
FM (1)
40 A
20 A
40 A
Maximum reverse leakage current per leg
See fig. 2
Threshold voltage
Forward slope resistance
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)
V
F(TO)
r
t
C
T
L
S
dV/dt
T
J
= 25 °C
T
J
= 125 °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
TEST CONDITIONS
T
J
= 25 °C
T
J
= 125 °C
VALUES
0.81
0.98
0.67
0.81
1
11
0.71
0.43
1480
8.0
10 000
mA
V
mΩ
pF
nH
V/µs
V
UNITS
V
R
= 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
Case style TO-220AB
SYMBOL
T
J
, T
Stg
TEST CONDITIONS
VALUES
- 55 to 175
2.0
R
thJC
DC operation
1.0
R
thCS
Mounting surface, smooth and greased
0.50
2
0.07
6 (5)
12 (10)
g
oz.
kgf · cm
(lbf · in)
°C/W
UNITS
°C
Mounting torque
Marking device
43CTQ080
43CTQ100
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For technical questions, contact: diodes-tech@vishay.com
Document Number: 93917
Revision: 21-Aug-08
43CTQ...
Schottky Rectifier, 2 x 20 A
Vishay High Power Products
I
F
- Instantaneous Forward Current (A)
1000
1000
I
R
- Reverse Current (mA)
100
10
1
0.1
T
J
= 50 °C
0.01
0.001
T
J
= 150 °C
T
J
= 175 °C
100
T
J
= 125 °C
10
T
J
= 175 °C
T
J
= 125 °C
T
J
= 25 °C
T
J
= 100 °C
T
J
= 75 °C
T
J
= 25 °C
1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
20
40
60
80
100
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)
10 000
C
T
- Junction Capacitance (pF)
1000
T
J
= 25 °C
100
0
20
40
60
80
100
V
R
- Reverse Voltage (V)
Fig. 3 - Typical Junction Capacitance vs.
Reverse Voltage (Per Leg)
Z
thJC
- Thermal Impedance (°C/W)
10
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
t
1
t
2
0.1
Single pulse
(thermal resistance)
0.01
0.00001
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
0.0001
0.001
0.01
t
1
- Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 93917
Revision: 21-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
3
43CTQ...
Vishay High Power Products
Schottky Rectifier, 2 x 20 A
180
20
Allowable Case Temperature (°C)
170
160
150
140
130
120
110
100
0
5
10
15
20
25
30
See note (1)
0
0
Square wave (D = 0.50)
80 % rated V
R
applied
Average Power Loss (W)
DC
15
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
10
RMS limit
DC
5
5
10
15
20
25
30
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
Note
(1)
Formula used: T = T - (Pd + Pd
C
J
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
= 10 V
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For technical questions, contact: diodes-tech@vishay.com
Document Number: 93917
Revision: 21-Aug-08
43CTQ...
Schottky Rectifier, 2 x 20 A
Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
43
1
1
2
3
4
5
6
-
-
-
-
-
-
C
2
T
3
Q
4
100
5
-
6
Current rating (40 A)
Circuit configuration:
C = Common cathode
T = TO-220
Schottky “Q” series
Voltage ratings
None = Standard production
PbF = Lead (Pb)-free
080 = 80 V
100 = 100 V
Tube standard pack quantity: 50 pieces
LINKS TO RELATED DOCUMENTS
Dimensions
Part marking information
http://www.vishay.com/doc?95222
http://www.vishay.com/doc?95225
Document Number: 93917
Revision: 21-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
5
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