Bulletin PD-21024 rev. A 07/06
40CTQ045SPbF
40CTQ045-1PbF
SCHOTTKY RECTIFIER
40 Amp
I
F(AV)
= 40Amp
V
R
= 45V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
I
FSM
@ tp = 5
μs
sine
V
F
T
J
@ 20 Apk, T
J
= 125°C
(per leg)
range
Description/ Features
Units
A
V
A
V
This center tap Schottky rectifier has been optimized for very
low forward voltage drop, with moderate leakage. The propri-
etary barrier technology allows for reliable operation up to
150° C junction temperature. Typical applications are in
switching power supplies, converters, free-wheeling diodes,
and reverse battery protection.
150° C T
J
operation
Center tap configuration
Very low forward voltage drop
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free ("PbF" suffix)
Values
40
45
1240
0.48
- 55 to 150
°C
Case Styles
40CTQ045SPbF
40CTQ045-1PbF
Base
Common
Cathode
2
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
Anode
D
2
PAK
Document Number: 94213
TO-262
www.vishay.com
1
40CTQ045SPbF, 40CTQ045-1PbF
Bulletin PD-21024 rev. A 07/06
Voltage Ratings
Parameters
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
40CTQ045SPbF
40CTQ045-1PbF
45
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward
Current
I
FSM
E
AS
I
AR
* See Fig. 5
(Per Leg)
(Per Device)
* See Fig. 7
Values
20
40
1240
350
20
3
Units
A
Conditions
50% duty cycle @ T
C
= 116°C, rectangular wave form
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5μs Sine or 3μs Rect. pulse
T
J
= 25 °C, I
AS
= 3 Amps, L = 4.40 mH
Current decaying linearly to zero in 1
μsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg)
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
Non-Repetitive Avalanche Energy
A
mJ
A
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
Values
0.53
0.68
0.48
0.67
3
115
0.27
8.72
2800
8.0
10000
Units
V
V
V
V
mA
mA
V
mΩ
Conditions
@ 20A
@ 40A
@ 20A
@ 40A
T
J
= 25 °C
T
J
= 125 °C
T
J
= T
J
max.
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2
(1)
V
F(TO)
Threshold Voltage
r
t
C
T
L
S
Forward Slope Resistance
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
pF
nH
V
R
= 5V
DC
(test signal range 100Khz to 1Mhz) 25°C
Measured lead to lead 5mm from package body
(1) Pulse Width < 300μs, Duty Cycle <2%
dv/dt Max. Voltage Rate of Change
V/
μs
(Rated V
R
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
Values
-55 to 150
-55 to 150
2.0
1.0
0.50
2 (0.07)
Min.
Max.
6 (5)
12 (10)
Units
°C
°C
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
to Heatsink
wt
T
Approximate Weight
Mounting Torque
Marking Device
°C/W DC operation
°C/W DC operation
°C/W Mounting surface , smooth and greased
(only for TO-220)
g (oz.)
Kg-cm
(Ibf-in)
Case style D
2
Pak
Case style TO-262
40CTQ045S
40CTQ045-1
Document Number: 94213
www.vishay.com
2
40CTQ045SPbF, 40CTQ045-1PbF
Bulletin PD-21024 rev. A 07/06
1000
1000
100
10
1
0.1
25°C
0.01
0.001
T
J
= 150°C
125°C
100°C
75°C
50°C
Instantaneous F
orward Current - I
F
(A)
100
R
everse Current - I
R
(mA)
0
5
10 15 20
25 30
35 40 45
R
evers Voltage - V
R
(V)
e
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
10000
Junc tion Capacitance - C
T
(pF)
10
T
J
= 150°C
T
J
= 125°C
T
J
= 25°C
T
J
= 25°C
1000
1
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
100
0
10
20
30
40
50
Forward Voltage Drop - V
FM
(V)
R
everse Voltage - V
R
(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
10
Thermal Impedance Z
thJC
(°C/ W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
0.1
Notes:
S
ingle Pulse
(T
hermal Resistanc e)
0.01
0.00001
0.0001
0.001
0.01
0.1
t1
t2
1. Duty fac tor D = t 1/ t 2
2. Peak T = P x Z
thJC
+ T
C
J
DM
1
10
100
t 1 , Rectangular Pulse Duration (S onds)
ec
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 94213
www.vishay.com
3
40CTQ045SPbF, 40CTQ045-1PbF
Bulletin PD-21024 rev. A 07/06
150
Allowable Case T
emperature - (°C)
145
140
135
130
125
120
115
110
105
100
0
S
quare wave (D = 0.50)
80% R
ated V
R
applied
DC
18
16
Average Power Loss - (Watts)
14
12
10
8
6
4
2
10
15
20
25
30
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
R Limit
MS
DC
see note (2)
5
0
0
5
10
15
20
25
30
Average Forward Current - I
F(AV)
(A)
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Non-Repetitive S
urge Current - I
FS
(A)
M
10000
At Any R
ated Load Condition
And With Rated V
RRM
Applied
Following S
urge
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
1000
100
10
100
1000
10000
S
quare Wave Pulse Duration - t p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
HIGH-S
PEED
S CH
WIT
FREE-WHEEL
DIODE
40HF
L40S
02
+
DUT
IR P460
F
R = 25 ohm
g
Vd = 25 Volt
CURRENT
MONIT
OR
Fig. 8 - Unclamped Inductive Test Circuit
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 10 V
Document Number: 94213
www.vishay.com
4
40CTQ045SPbF, 40CTQ045-1PbF
Bulletin PD-21024 rev. A 07/06
Outlines Table
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
Modified JEDEC outline TO-262
Dimensions in millimeters and (inches)
Document Number: 94213
www.vishay.com
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