Bulletin PD-20854 rev. A 02/07
47CTQ020PbF
40 Amp
SCHOTTKY RECTIFIER
IF(AV) = 40Amp
VR = 20V
Description/ Features
Major Ratings and Characteristics
Characteristics
Values
Units
IF(AV) Rectangular
40
A
VRRM
20
V
IFSM @ tp = 5 μs sine
1000
A
VF
0.34
V
- 55 to 150
°C
waveform
This center tap Schottky rectifier has been optimized for
ultra low forward voltage drop specifically for 3.3V output
power supplies. The proprietary barrier technology allows
for reliable operation up to 150 °C junction temperature.
Typical applications are in parallel switching power supplies,
converters, reverse battery protection, and redundant power
subsystems.
150 °C TJ operation
Center tap configuration
Optimized for 3.3V application
@ 20 Apk, TJ= 125 °C
TJ
Ultra low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Lead-Free ("PbF" suffix)
Case Styles
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
Anode
TO-220
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1
47CTQ020PbF
Bulletin PD-20854 rev. A 02/07
Voltage Ratings
Part number
VR
VR
47CTQ020PbF
Max. DC Reverse Voltage (V)
@ 125° C
20
Max. DC Reverse Voltage (V)
@ 150° C
10
Absolute Maximum Ratings
Parameters
47CTQ Units
IF(AV) Max. Average Forward (Per Device)
Current
(Per Leg)
IFSM
EAS
IAR
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg)
Non-Repetitive Avalanche Energy
(Per Leg)
40
20
A
1000
250
18
mJ
3
A
Repetitive Avalanche Current
(Per Leg)
A
Conditions
50% duty cycle @ TC = 135°C, rectangular wave form
5μs Sine or 3μs Rect. pulse Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated VRRM applied
TJ = 25 °C, I AS = 3 Amps, L =3 mH
Current decaying linearly to zero in 1 μsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
VFM
IRM
47CTQ Units
Max. Forward Voltage Drop
(Per Leg)
(1)
V
V
V
@ 20A
@ 40A
@ 20A
0.44
V
@ 40A
0.31
V
@ 20A
0.42
V
@ 40A
Max. Reverse Leakage Current
(Per Leg)
Conditions
0.45
0.51
0.34
(1)
TJ = 25 °C
TJ = 125 °C
TJ = 150 °C
3
mA
TJ = 25 °C
310
mA
TJ = 125 °C
VR = rated VR
60
45
mA
mA
TJ = 125 °C
TJ = 125 °C
VR = 5V
VR = 3.3V
VR = 10V
306
mA
TJ = 150 °C
VF(TO) Threshold Voltage
rt
Forward Slope Resistance
0.188
5.9
V
mΩ
TJ = T J max.
CT
Max. Junction Capacitance (Per Leg)
3000
pF
VR = 5VDC (test signal range 100Khz to 1Mhz) 25°C
LS
Typical Series Inductance (Per Leg)
5.5
nH
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
10000
V/ μs (Rated VR)
(1) Pulse Width < 300μs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
47CTQ
Units
TJ
Max. Junction Temperature Range
-55 to 150
°C
Tstg
Max. Storage Temperature Range
-55 to 150
Conditions
°C
RthJC Max. Thermal Resistance Junction
to Case (Per Leg)
1.5
°C/W DC operation
RthJC Max. Thermal Resistance Junction
to Case (Per Package)
0.75
°C/W DC operation
RthCS Typical Thermal Resistance, Case
to Heatsink
0.50
°C/W Mounting surface , smooth and greased
wt
Approximate Weight
T
Mounting Torque
Marking Device
2
2 (0.07)
g (oz.)
Min.
6 (5)
Max.
12 (10)
Kg-cm
(Ibf-in)
47CTQ020
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47CTQ020PbF
Bulletin PD-20854 rev. A 02/07
1000
1000
Reverse Current - IR (mA)
100
125°C
100°C
10
75°C
1
50°C
25°C
0.1
0.01
0
4
8
12
16
20
Reverse Voltage - VR (V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
TJ = 150°C
TJ = 125°C
10000
TJ = 25°C
Junction Capa citance - C T (pF)
Instantaneous Forward Current - IF (A)
TJ = 150°C
100
10
1
TJ = 25°C
1000
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0
2
4
6
8 10 12 14 16 18 20 22
Forward Voltage Drop - V FM (V)
Reverse Voltage - VR (V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Thermal Impedance Z thJC (°C/ W)
10
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
t1
0.1
Notes:
Single Pulse
(Thermal Resistanc e)
0.01
0.00001
0.0001
0.001
0.01
t2
1. Duty factor D = t 1/ t 2
2. Peak TJ = PDM x Z thJC+ TC
0.1
1
10
100
t 1 , Rec tangular Pulse Duration (Sec onds)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
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3
47CTQ020PbF
Bulletin PD-20854 rev. A 02/07
12
150
Average Power Loss - (Watts)
Allowable Case Temperature - (°C)
160
DC
140
130
120
Square wave (D = 0.50)
10V applied
110
100
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
10
8
RMSLimit
6
DC
4
2
see note (2)
90
0
5
10
15
20
25
0
30
0
Average Forward Current - I F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Non-Repetitive Surge Current - I FSM (A)
5
10
15
20
25
30
Average Forward Current - I F(AV) (A)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
1000
At Any Ra ted Load Condition
And With Rated VRRM Applied
Following Surge
100
10
100
1000
10000
Square Wave Pulse Duration - t p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
IRFP460
DUT
Rg = 25 ohm
CURRENT
MONITOR
HIGH-SPEED
SWITCH
FREE-WHEEL
DIODE
+
Vd = 25 Volt
40HFL40S02
Fig. 8 - Unclamped Inductive Test Circuit
(2) Formula used: TC = TJ - (Pd + PdREV) x RthJC ;
Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = V R1 x IR (1 - D); IR @ VR1 = 10 V
4
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47CTQ020PbF
Bulletin PD-20854 rev. A 02/07
Outline Table
Conform to JEDEC outline TO-220AB
Part Marking Information
IRXC Assembly Line - SubCon Assembly Line
EXAMPLE: THIS IS A 47CTQ020
LOT CODE 1789
ASSEMBLED ON WW 19, 2001
IN THE ASSEMBLY LINE "C"
IRMX Assembly Line
EXAMPLE: THIS IS A 47CTQ020
LOT CODE 1789
ASSEMBLED ON WW 19, 2001
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INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
PART NUMBER
DATE CODE
P = LEAD-FREE
YEAR 1 = 2001
WEEK 19
LINE C
PART NUMBER
DATE CODE
YEAR 1 = 2001
WEEK 19
P = LEAD-FREE
5
47CTQ020PbF
Bulletin PD-20854 rev. A 02/07
Ordering Information Table
Device Code
47
C
T
Q
1
2
3
4
020 PbF
1
-
Current Rating (40A)
2
-
Circuit Configuration
3
-
Package
5
6
C = Common Cathode
T = TO-220
4
-
5
-
Schottky "Q" Series
Voltage Rating (020 = 20A)
6
-
y none = Standard Production
y PbF = Lead-Free
Tube Standard Pack Quantity : 50 pieces
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level and Lead-Free.
Qualification Standards can be found on IR's Web site.
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 02/07
6
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