40CTQ045PbF
Vishay High Power Products
Schottky Rectifier, 40 A
®
FEATURES
Base 2
common
cathode
•
•
•
•
•
Anode
TO-220AB
Anode
2
1 Common 3
cathode
150 °C T
J
operation
Pb-free
Center tap configuration
Available
Very low forward voltage drop
RoHS*
COMPLIANT
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
• Lead (Pb)-free (“PbF” suffix)
• Designed and qualified for industrial level
PRODUCT SUMMARY
I
F(AV)
V
R
40 A
45 V
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.
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
40CTQ045PbF
45
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
per leg
Maximum average forward current
See fig. 5
per device
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
= 116 °C, rectangular waveform
Following any rated load
condition and with rated
10 ms sine or 6 ms rect. pulse V
RRM
applied
5 µs sine or 3 µs rect. pulse
T
J
= 25 °C, I
AS
= 3 A, L = 4.4 mH
Current decaying linearly to zero in 1 µs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
VALUES
20
40
1240
350
20
3
mJ
A
A
UNITS
I
FSM
E
AS
I
AR
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 94212
Revision: 05-Jun-07
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
1
40CTQ045PbF
Vishay High Power Products
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
Schottky Rectifier, 40 A
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
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)
40CTQ045
°C/W
UNITS
°C
Mounting torque
Marking device
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2
For technical questions, contact: diodes-tech@vishay.com
Document Number: 94212
Revision: 05-Jun-07
40CTQ045PbF
Schottky Rectifier, 40 A
Vishay High Power Products
I
F
- Instantaneous Forward Current (A)
1000
1000
I
R
- Reverse Current (mA)
100
10
1
0.1
0.01
0.001
T
J
= 150 °C
T
J
= 125 °C
T
J
= 100 °C
T
J
= 75 °C
T
J
= 50 °C
T
J
= 25 °C
100
10
T
J
= 150 °C
T
J
= 125 °C
T
J
= 25 °C
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)
1000
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
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)
Notes:
1. Duty factor D = t
1
/t
2
.
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
0.01
0.1
1
10
100
0.01
0.00001
0.0001
0.001
t
1
- Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 94212
Revision: 05-Jun-07
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
3
40CTQ045PbF
Vishay High Power Products
Schottky Rectifier, 40 A
150
18
16
Allowable Case Temperature (°C)
145
140
DC
135
130
125
120
115
110
105
100
0
5
10
15
20
25
30
See note (1)
Square wave (D = 0.50)
80 % rated V
R
applied
Average Power Loss (W)
14
12
10
8
6
4
2
0
0
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMS limit
DC
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
For technical questions, contact: diodes-tech@vishay.com
Document Number: 94212
Revision: 05-Jun-07
(1)
www.vishay.com
4
40CTQ045PbF
Schottky Rectifier, 40 A
Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
40
1
1
2
3
4
5
6
-
-
-
-
-
C
2
T
3
Q
4
045 PbF
5
6
Current rating (40 = 40 A)
Circuit configuration
C = Common cathode
Package
T = TO-220
Schottky “Q” series
Voltage rating (045 = 45 V)
None = Standard production
PbF = Lead (Pb)-free
-
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?95215
Document Number: 94212
Revision: 05-Jun-07
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
5
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