40CTQ045SPbF/40CTQ045-1PbF
Vishay High Power Products
Schottky Rectifier, 2 x 20 A
40CTQ045SPbF
40CTQ045-1PbF
FEATURES
• 150 °C T
J
operation
• Center tap configuration
• Very low forward voltage drop
• High frequency operation
Available
RoHS*
COMPLIANT
Base
common
cathode
2
Base
common
cathode
2
• High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
• Guard ring for enhanced ruggedness and long term
reliability
• Lead (Pb)-free (“PbF” suffix)
• Designed and qualified for Q101 level
2
1 Common
3
Anode cathode Anode
2
1 Common
3
Anode cathode Anode
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.
D
2
PAK
TO-262
PRODUCT SUMMARY
I
F(AV)
V
R
2 x 20 A
45 V
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
45
1240
0.48
- 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
40CTQ045SPbF
40CTQ045-1PbF
45
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Maximum average
forward current
See fig. 5
per leg
per device
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
40
1240
350
20
3
mJ
A
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
= 3 A, L = 4.40 mH
Current decaying linearly to zero in 1 µs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 94213
Revision: 13-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
1
40CTQ045SPbF/40CTQ045-1PbF
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
VALUES
0.53
0.68
0.48
0.67
3
115
0.27
8.72
2800
8.0
10 000
mA
V
mΩ
pF
nH
V/µs
V
UNITS
T
J
= 125 °C
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 D
2
PAK
Case style TO-262
SYMBOL
T
J
, T
Stg
TEST CONDITIONS
VALUES
- 55 to 150
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
40CTQ045S
40CTQ045-1
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For technical questions, contact: diodes-tech@vishay.com
Document Number: 94213
Revision: 13-Aug-08
40CTQ045SPbF/40CTQ045-1PbF
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
T
J
= 150 °C
T
J
= 125 °C
T
J
= 100 °C
T
J
= 75 °C
T
J
= 50 °C
100
10
T
J
= 150 °C
T
J
= 125 °C
T
J
= 25 °C
0.1
T
J
= 25 °C
0.01
0.001
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
(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)
T
J
= 25 °C
1000
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
P
DM
t
1
t
2
0.1
Single pulse
(thermal resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
Notes:
1. Duty factor D = t
1
/t
2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
100
0.01
0.00001
0.0001
0.001
0.01
0.1
1
10
t
1
- Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 94213
Revision: 13-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
3
40CTQ045SPbF/40CTQ045-1PbF
Vishay High Power Products
Schottky Rectifier, 2 x 20 A
150
145
140
135
130
125
120
115
110
105
100
Allowable Case Temperature (°C)
18
16
Average Power Loss (W)
14
12
10
8
6
DC
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMS limit
Square wave (D = 0.50)
80 % rated V
R
applied
See note (1)
0
5
10
15
20
25
30
DC
4
2
0
0
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)
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 (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
Formula used: T
C
= T
J
- (Pd + Pd
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
(1)
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For technical questions, contact: diodes-tech@vishay.com
Document Number: 94213
Revision: 13-Aug-08
40CTQ045SPbF/40CTQ045-1PbF
Schottky Rectifier, 2 x 20 A
Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
40
1
1
2
3
4
5
6
7
-
-
-
-
-
-
C
2
T
3
Q
4
045
5
S
6
TRL PbF
7
8
Current rating (40 A)
Circuit configuration:
C = Common cathode
T = TO-220
Schottky “Q” series
Voltage rating (045 = 45 V)
S = D
2
PAK
-1 = TO-262
-
None = Tube (50 pieces)
TRL = Tape and reel (left oriented - for D
2
PAK only)
TRR = Tape and reel (right oriented - for D
2
PAK only)
8
-
None = Standard production
PbF = Lead (Pb)-free
LINKS TO RELATED DOCUMENTS
Dimensions
Part marking information
Packaging information
http://www.vishay.com/doc?95014
http://www.vishay.com/doc?95008
http://www.vishay.com/doc?95032
Document Number: 94213
Revision: 13-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
5
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