Vishay 20CTQ..., 20CTQ...S, 20CTQ... -1 Data Sheet
Bulletin PD-20056 rev. A 12/01
20CTQ...
20CTQ...S 20CTQ... -1
SCHOTTKY RECTIFIER |
20 Amp |
Major Ratings and Characteristics
Characteristics |
20CTQ |
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IF(AV) Rectangular |
20 |
A |
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waveform |
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VRRM range |
35 to 45 |
V |
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IFSM |
@ tp = 5 µs sine |
1060 |
A |
VF |
@10 Apk, TJ =125°C |
0.57 |
V |
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(per leg) |
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TJ |
range |
- 55 to 175 |
°C |
IF(AV) = 20Amp
VR = 35 to 45V
Description/Features
The 20CTQ center tap Schottky rectifier series has been optimized for low reverse leakage at high temperature. The proprietary barrier technology allows for reliable operation up to 175° C junction temperature. Typical applications are in switching power supplies, converters, free-wheeling diodes, and reverse battery protection.
175° C TJ operation
Center tap TO-220 package
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
20CTQ...
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Base |
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Common |
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Cathode |
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Common |
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Anode |
Cathode |
Anode |
TO-220
20CTQ... S
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Base |
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Common |
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Cathode |
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2 |
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2 |
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1 |
Common |
3 |
Anode |
Cathode |
Anode |
D2PAK
20CTQ... -1
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Base |
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Common |
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Cathode |
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2 |
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Common |
3 |
Anode |
Cathode |
Anode |
TO-262
www.irf.com |
1 |
20CTQ... Series
Bulletin PD-20056 rev. A 12/01
Voltage Ratings
Part number |
20CTQ035 |
20CTQ040 |
20CTQ045 |
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VR Max. DC Reverse Voltage (V) |
35 |
40 |
45 |
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VRWM Max. Working Peak Reverse Voltage (V) |
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Absolute Maximum Ratings
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Parameters |
20CTQ |
Units |
Conditions |
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IF(AV) |
Max.AverageForwardCurrent |
20 |
A |
50% duty cycle @ TC = 145°C, rectangular wave form |
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* See Fig. 5 |
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IFSM |
Max.PeakOneCycleNon-Repetitive |
1060 |
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5µs Sine or 3µs Rect. pulse |
Following any rated |
A |
load condition and with |
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Surge Current (Per Leg) * See Fig. 7 |
265 |
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10ms Sine or 6ms Rect. pulse |
rated VRRM applied |
EAS |
Non-RepetitiveAvalancheEnergy |
13 |
mJ |
TJ = 25 °C, IAS = 2.0 Amps, L = 6.5 mH |
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(Per Leg) |
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IAR |
RepetitiveAvalancheCurrent |
2.0 |
A |
Current decaying linearly to zero in 1 µsec |
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(Per Leg) |
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Frequency limited by TJ max. VA = 1.5 x VR typical |
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Electrical Specifications
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Parameters |
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20CTQ |
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Conditions |
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VFM |
Max. Forward Voltage Drop |
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0.64 |
V |
@ 10A |
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TJ |
= 25 °C |
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(Per Leg) * See Fig. 1 |
(1) |
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0.76 |
V |
@ 20A |
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0.57 |
V |
@ 10A |
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TJ |
= 125 °C |
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0.68 |
V |
@ 20A |
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IRM |
Max. Reverse Leakage Current |
2 |
mA |
TJ = 25 °C |
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VR |
= rated VR |
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(Per Leg) * See Fig. 2 |
(1) |
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15 |
mA |
TJ = 125 °C |
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CT |
Max. Junction Capacitance (Per Leg) |
900 |
pF |
VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C |
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LS |
Typical Series Inductance |
(Per Leg) |
8.0 |
nH |
Measured lead to lead 5mm from package body |
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dv/dt |
Max. Voltage Rate of Change |
10000 |
V/ µs |
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(Rated VR) |
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Thermal-Mechanical Specifications |
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(1) Pulse Width < 300µs, Duty Cycle <2% |
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Parameters |
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20CTQ |
Units |
Conditions |
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TJ |
Max.JunctionTemperatureRange |
-55to175 |
°C |
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Tstg |
Max.StorageTemperatureRange |
-55to175 |
°C |
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R |
Max.ThermalResistanceJunction |
3.25 |
°C/W |
DCoperation |
* SeeFig. 4 |
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thJC |
to Case (Per Leg) |
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R |
Max.ThermalResistanceJunction |
1.63 |
°C/W |
DCoperation |
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thJC |
to Case (Per Package) |
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R |
TypicalThermalResistance,Case |
0.50 |
°C/W |
Mountingsurface,smoothandgreased |
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thCS |
toHeatsink |
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wt |
ApproximateWeight |
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2(0.07) |
g(oz.) |
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T |
MountingTorque |
Min. |
6(5) |
Kg-cm |
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Max. |
12(10) |
(Ibf-in) |
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20CTQ... Series |
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Bulletin |
PD-20056 |
rev. A |
12/01 |
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1000 |
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1000 |
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100 |
T = 175°C |
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<![if ! IE]> <![endif]>(mA) |
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J |
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10 |
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150°C |
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<![if ! IE]> <![endif]>R |
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125°C |
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<![if ! IE]> <![endif]>I |
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<![if ! IE]> <![endif]>- |
1 |
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<![if ! IE]> <![endif]>ReverseCurrent |
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100°C |
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100 |
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.1 |
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75°C |
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.01 |
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50°C |
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.001 |
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25°C |
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| <![if ! IE]> <![endif]>F |
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<![if ! IE]> <![endif]>T |
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.0001 |
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45 |
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0 |
5 |
10 |
15 20 |
25 |
30 |
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35 |
40 |
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Reverse Voltage -V |
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(V) |
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10 |
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T = 175°C |
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R |
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Fig. 2 - Typical Values Of Reverse Current |
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J |
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T = 125°C |
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Vs. Reverse Voltage (Per Leg) |
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1000 |
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J |
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T = 25°C |
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J |
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<![if ! IE]> <![endif]>(pF) |
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<![if ! IE]> <![endif]>-C |
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1 |
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<![if ! IE]> <![endif]>JunctionCapacitance |
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T = 25°C |
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J |
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.1 |
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100 |
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0 |
.2 |
.4 .6 .8 |
1 |
1.2 |
1.4 |
1.6 |
1.8 |
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30 |
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Forward Voltage Drop -V |
(V) |
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Reverse Voltage -V |
(V) |
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FM |
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Fig. 1 - Max. Forward Voltage Drop Characteristics |
Fig. 3 - Typical Junction Capacitance |
(PerLeg) |
Vs. Reverse Voltage (Per Leg) |
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10 |
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| <![if ! IE]> <![endif]>(°C/W) |
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D = 0.50 |
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1 |
D = 0.33 |
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D = 0.25 |
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D = 0.17 |
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P |
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D = 0.08 |
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DM |
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| <![if ! IE]> <![endif]>Impedance |
.1 |
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t1 |
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t2 |
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Notes: |
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| <![if ! IE]> <![endif]>Thermal |
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Single Pulse |
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1.Duty factorD = t1/t2 |
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2.Peak T = P |
x Z |
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(Thermal Resistance) |
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J |
DM |
thJC |
C |
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.001 |
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.00001 |
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.001 |
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.1 |
1 |
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10 |
100 |
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t1, RectangularPulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
www.irf.com |
3 |
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