Vishay 40CTQ045, 40CTQ045S, 40CTQ045-1 Data Sheet
Bulletin PD-20544 rev. C 12/01
A
A
A
40CTQ045
40CTQ045S
40CTQ045-1
SCHOTTKY RECTIFIER
Major Ratings and Characteristics
Characteristics Values Units
I
Rectangular 40 A
F(AV)
waveform
V
RRM
I
@ tp = 5 µs sine 1240 A
FSM
VF@ 20 Apk, TJ = 125°C 0.48 V
(per leg)
TJrange - 55 to 15 0 °C
40CTQ... 40CTQ... S 40CTQ... -1
45 V
40 Amp
Description/Features
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 TJ 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
Case Styles
Base
Common
Cathode
2
2
1
Common
3
Cathode
node
Anode
TO-220 D
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node
1
Base
Common
Cathode
Common
Cathode
2
PAK
Base
Common
node
Cathode
2
2
1
Common
3
Cathode
Anode
2
2
3
Anode
TO-262
1
40CTQ045, 40CTQ045S, 40CTQ045-1
Bulletin PD-20544 rev. C 12/01
Voltage Ratings
40CTQ045
Parameters
VRMax. DC Reverse Voltage (V)
V
Max. Working Peak Reverse Voltage (V)
RWM
40CTQ045S
40CTQ045-1
45
Absolute Maximum Ratings
Parameters Values Units Conditions
I
Max. Average Forward (Per Leg) 20 A 50% duty cycle @ TC = 116°C, rectangular wave form
F(AV)
Current * See Fig. 5 (Per Device) 40
I
Max. Peak One Cycle Non-Repetitive 1240 5µs Sine or 3µs Rect. pulse
FSM
Surge Current (Per Leg) * See Fig. 7 350 10ms Sine or 6ms Rect. pulse
EASNon-Repetitive Avalanche Energy 20 mJ T
A
= 25 °C, I
J
= 3 Amps, L = 4.40 mH
AS
(Per Leg)
IARRepetitive Avalanche Current 3 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
Following any rated
load condition and with
rated V
RRM
applied
Electrical Specifications
Parameters Values Units Conditions
VFMMax. Forward Voltage Drop 0.53 V @ 20A
(Per Leg) * See Fig. 1 (1) 0.68 V @ 40A
0.48 V @ 20A
0.67 V @ 40A
IRMMax. Reverse Leakage Current 3 mA TJ = 25 °C
(Per Leg) * See Fig. 2 (1) 115 mA TJ = 125 °C
V
Threshold Voltage 0.27 V T
F(TO)
= TJ max.
J
rtForward Slope Resistance 8.72 m Ω
CTMax. Junction Capacitance (Per Leg) 2800 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance (Per Leg) 8.0 nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change 10000 V/ µs
(Rated VR)
TJ = 25 °C
TJ = 125 °C
VR = rated V
(1) Pulse Width < 300µs, Duty Cycle <2%
R
Thermal-Mechanical Specifications
Parameters Values Units Conditions
TJMax. Junction Temperature Range -55 to 150 °C
T
Max. Storage Temperature Range -55 to 150 °C
stg
R
Max. Thermal Resistance Junction 2.0 °C/W DC operation
thJC
to Case (Per Leg)
R
Max. Thermal Resistance Junction 1.0 °C/W DC operation
thJC
to Case (Per Package)
R
Typical Thermal Resistance, Case 0.50 °C/W Mounting surface , smooth and greased
thCS
to Heatsink (only for TO-220)
wt Approximate Weight 2 (0.07) g (oz.)
T Mounting Torque Min. 6 (5)
Max. 12 (10)
Kg-cm
(Ibf-in)
2
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40CTQ045, 40CTQ045S, 40CTQ045-1
Bulletin PD-20544 rev. C 12/01
1000
100
F
10
Instan ta n eo us Forward Curren t - I (A)
T = 150 C
J
T = 125 C
J
T = 25 C
J
1000
T = 150 C
100
J
125 C
R
10
1
100 C
75 C
50 C
0.1
Reverse Current - I (mA)
0.01
0.001
0 5 10 15 20 25 30 35 40 45
25 C
Reverse Voltage - V (V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
10000
T
T = 25 C
J
1000
R
1
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8
Fig. 1 - Max. Forward Voltage Drop Characteristics
Therm a l Impeda nce Z ( C /W)
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Junc tion Capac itance - C (pF)
100
01020304050
Forward V oltage D ro p - V (V)
FM
Reverse Voltage - V (V)
Fig. 3 - Typical Junction Capacitance
(Per Leg)
10
D = 0.75
D = 0.50
1
thJC
D = 0.33
D = 0.25
D = 0.20
0.1
Single Pulse
(Thermal Resistance)
0.01
0.00001 0.0001 0.001 0.01 0.1 1 10 100
t , Rec tang ula r Pulse Duratio n (Seco nds)
1
Fig. 4 - Max. Thermal Impedance Z
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
Characteristics (Per Leg)
thJC
Vs. Reverse Voltage (Per Leg)
P
DM
t
1
t
2
1
J
DM
thJC
R
2
C
3
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