Bulletin PD-20544 rev. C 12/01
40CTQ045
40CTQ045S
40CTQ045-1
SCHOTTKY RECTIFIER
40 Amp
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
proprietary 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
Values
40
45
1240
0.48
- 55 to 150
°C
Case Styles
40CTQ...
40CTQ... S
40CTQ... -1
Base
Common
Cathode
2
Base
Common
Cathode
2
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
Anode
TO-220
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D
2
PAK
TO-262
1
40CTQ045, 40CTQ045S, 40CTQ045-1
Bulletin PD-20544 rev. C 12/01
Voltage Ratings
Parameters
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
40CTQ045
40CTQ045S
40CTQ045-1
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)
Values Units
20
40
1240
350
20
3
A
mJ
A
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
T
J
= 25 °C, I
AS
= 3 Amps, L = 4.40 mH
5µs Sine or 3µs Rect. pulse
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) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
Values Units
0.53
0.68
0.48
0.67
3
115
0.27
8.72
2800
8.0
10000
(Per Leg)
V
V
V
V
mA
mA
V
m
Ω
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
pF
nH
V/ µs
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25°C
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
(1) Pulse Width < 300µs, Duty Cycle <2%
Values Units
-55 to 150
-55 to 150
2.0
1.0
0.50
2 (0.07)
Min.
Max.
6 (5)
12 (10)
°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
°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)
2
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40CTQ045, 40CTQ045S, 40CTQ045-1
Bulletin PD-20544 rev. C 12/01
1 00 0
1 0 00
1 00
10
1
50 C
0 .1
25 C
0 .0 1
0.0 0 1
0
5
10
15
20
25
30
35
40
45
Reverse V oltag e - V
R
(V )
T
J
= 15 0 C
125 C
100 C
75 C
In stantan eous Forw a rd C urrent - I
F
(A )
100
Reverse Cu rrent - I
R
(m A)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
10 0 00
Junc tion C ap ac ita n ce - C
T
(p F)
10
T
J
= 150 C
T
J
= 125 C
T
J
= 25 C
T
J
= 25 C
1 0 00
1
0
0 .2
0.4
0.6
0 .8
1
1.2
1 .4
1.6
1 .8
Forw a rd V olta g e D rop - V
FM
(V )
10 0
0
10
20
30
40
50
Reverse V oltag e - V
R
(V )
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
10
Therm al Im pedan ce Z
thJC
( C /W )
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
1
D
D
D
D
D
=
=
=
=
=
0.75
0.50
0.33
0.25
0.20
P
D M
0.1
Notes:
Sing le Pulse
(Therm a l Resista n ce)
0.0 1
0.000 01
t1
t2
1. D uty factor D = t 1/ t 2
2. Peak T
J
= P
D M
x Z
thJC
+ T
C
0 .1
1
10
10 0
0.0 001
0.0 01
0 .01
t 1 , Recta ng ula r Pu lse Du ra tio n (Seco n d s)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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3
40CTQ045, 40CTQ045S, 40CTQ045-1
Bulletin PD-20544 rev. C 12/01
1 50
Allow able C ase Tem perature - ( C )
1 45
1 40
1 35
1 30
1 25
1 20
1 15
1 10
1 05
1 00
0
5
10
15
20
25
30
Averag e Forw a rd C urren t - I
F(A V )
(A )
se e no te (2)
18
16
A vera ge Pow er Loss - (W at ts)
14
12
10
8
6
4
2
0
0
5
10
15
20
25
30
A vera ge Forw a rd C urren t - I
F(A V )
(A)
DC
D
D
D
D
D
=
=
=
=
=
0.20
0.25
0.33
0.50
0.75
RM S Lim it
DC
Sq uare w a ve (D = 0.50)
80% Rated V
R
a pp lied
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
10000
Non-Rep etitive Surg e C urrent - I
F SM
(A )
At Any Rated Load C ondition
An d W ith Ra ted V
RRM
Ap plied
Follow ing Surge
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
1000
100
10
100
1000
10000
Square W ave Pulse D uration - t p (m icrosec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
H IG H-SPE ED
SW ITC H
FR EE-W H E EL
D IO D E
40H FL40 S02
V d = 25 V olt
D UT
IRFP460
Rg = 25 ohm
+
C URRE NT
M O N ITO R
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
4
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40CTQ045, 40CTQ045S, 40CTQ045-1
Bulletin PD-20544 rev. C 12/01
Outline Table
10.54 (0.41)
MAX.
3.78 (0.15)
3.54 (0.14)
15.24 (0.60)
14.84 (0.58)
1 2 3
14.09 (0.55)
13.47 (0.53)
3.96 (0.16)
3.55 (0.14)
2.04 (0.080) MAX.
1.40 (0.05)
1.15 (0.04)
0.94 (0.04)
0.69 (0.03)
1
2
3
1.32 (0.05)
DIA.
6.48 (0.25)
6.23 (0.24)
2°
1.22 (0.05)
2.92 (0.11)
2.54 (0.10)
TERM 2
0.10 (0.004)
2.89 (0.11)
2.64 (0.10)
BASE
COMMON
CATHODE
2
1 2 3
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) MAX.
ANODE COMMON ANODE
CATHODE
1
2
5.08 (0.20) REF.
Conform to JEDEC outline TO-220AB
Dimensions in millimeters and (inches)
10.16 (0.40)
REF.
4.69 (0.18)
4.20 (0.16)
1.32 (0.05)
6.47 (0.25)
15.49 (0.61)
1.22 (0.05)
93°
6.18 (0.24)
14.73 (0.58)
2.61 (0.10)
2.32 (0.09)
8.89 (0.35)
5.28 (0.21)
4.78 (0.19)
0.55 (0.02)
0.46 (0.02)
3X
BASE
COMMON
CATHODE
2
1.40 (0.055)
REF.
0.93 (0.37)
0.69 (0.27)
1.14 (0.045)
2X
MINIMUM RECOMMENDED FOOTPRINT
11.43 (0.45)
1
1
2
3
ANODE COMMON ANODE
CATHODE
1
2
3
4.57 (0.18)
4.32 (0.17)
2
0.61 (0.02) MAX.
5.08 (0.20) REF.
8.89 (0.35)
17.78 (0.70)
3.81 (0.15)
2.08 (0.08)
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
2X
2.54 (0.10)
2X
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5
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