Bulletin PD-20844 09/04
20L15TPbF
SCHOTTKY RECTIFIER
20 Amps
IF(AV) = 20Amp
VR = 15V
Major Ratings and Characteristics
Description/ Features
Characteristics
Values
Units
IF(AV) Rectangular
20
A
VRRM
15
V
IFSM @ tp = 5 µs sine
700
A
VF
0.25
V
- 55 to 125
°C
waveform
@ 19 Apk, TJ=125°C
( Typical)
TJ
range
The Schottky rectifier module has been optimized for ultra low
forward voltage drop specifically for the OR-ing of parallel
power supplies. The proprietary barrier technology allows for
reliable operation up to 125 °C junction temperature. Typical
applications are in parallel switching power supplies, converters, reverse battery protection, and redundant power subsystems.
125°C TJ operation (VR < 5V)
Single diode configuration
Optimized for OR-ing applications
Ultra low forward voltage drop
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
20L15TPbF
Base
Cathode
2
1
Cathode
3
Anode
TO-220AC
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20L15TPbF
Bulletin PD-20844 09/04
Voltage Ratings
Part number
VR
20L15TPbF
Max. DC Reverse Voltage (V)
@ TJ = 100 °C
15
VRWM Max. Working Peak Reverse Voltage (V) @ TJ = 100 °C
Absolute Maximum Ratings
Parameters
Values
Units
20
A
IF(AV) Max. Average Forward Current
Conditions
50% duty cycle @ TC = 85°C, rectangular wave form
* See Fig. 5
IFSM
Max. Peak One Cycle Non-Repetitive
700
Surge Current * See Fig. 7
330
EAS
Non-Repetitive Avalanche Energy
10
mJ
IAR
Repetitive Avalanche Current
2
A
Values
Units
A
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated VRRM applied
5µs Sine or 3µs Rect. pulse
TJ = 25 °C, IAS = 2 Amps, L = 6 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
Conditions
Typ. Max.
VFM
IRM
Forward Voltage Drop
* See Fig. 1
(1)
Reverse Leakage Current
* See Fig. 2
(1)
VF(TO) Threshold Voltage
0.25
0.37
0.41
0.52
0.33
0.50
V
V
V
V
@ 19A
@ 40A
@ 19A
@ 40A
-
10
mA
TJ = 25 °C
-
600
mA
TJ = 100 °C
0.182
V
TJ = TJ max.
7.6
mΩ
TJ = 25 °C
TJ = 125 °C
VR = rated VR
rt
Forward Slope Resistance
CT
Max. Junction Capacitance
-
2000
pF
VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LS
Typical Series Inductance
8
-
nH
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
(Rated VR)
10,000
V/ µs
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
Values
Units
°C
TJ
Max. Junction Temperature Range
-55 to 125
Tstg
Max. Storage Temperature Range
-55 to 150
Conditions
°C
RthJC Max. Thermal Resistance
Junction to Case
1.5
°C/W DC operation
RthCS Typical Thermal Resistance
Case to Heatsink
0.50
°C/W Mounting surface , smooth and greased
For TO-220
RthJA Max. Thermal Resistance
40
°C/W DC operation
For D2Pak
Junction to Ambient
wt
Approximate Weight
T
Mounting Torque
Marking Device
2
* See Fig. 4
2 (0.07)
Min.
6 (5)
Max.
12 (10)
g (oz.)
Kg-cm Non-lubricated threads
(Ibf-in)
20L15T
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20L15TPbF
Bulletin PD-20844 09/04
Reverse Current - I R (mA)
1000
100
TJ = 100°C
100
75°C
50°C
10
25°C
1
0.1
0
3
6
9
12
15
Reverse Voltage - V R (V)
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
10000
TJ = 125°C
10
Junction Capacitance - C T (pF)
Instantaneous Forward Current - IF (A)
1000
TJ = 75°C
TJ = 25°C
1
TJ = 25°C
1000
100
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
0
5
10
15
Forward Voltage Drop - V FM (V)
Reverse Voltage - VR (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
20
Thermal Impedance Z thJC (°C/W)
10
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
PDM
t1
0.1
Single Pulse
(Thermal Resistance)
0.01
0.00001
0.0001
0.001
0.01
Notes:
t2
1. Duty fac tor D = t 1/ t 2
2. Peak TJ = PDM x Z thJC+ TC
0.1
1
10
100
t 1 , Rectangular Pulse Duration (Seconds)
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics
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20L15TPbF
100
14
95
12
Average Power Loss - (Watts)
Allowa ble Case Temperature - (°C)
Bulletin PD-20844 09/04
90
85
Square wave (D = 0.50)
80
75
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
10
RMSLimit
8
DC
6
4
2
se e note (2)
70
0
0
4
8
12
16
20
24
0
Average Forward Current - I F(AV) (A)
5
10
15
20
25
30
Average Forward Current - I F(AV) (A)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
Fig. 6 - Forward Power Loss Characteristics
Non-Repetitive Surge Current - I FSM (A)
1000
At Any Rated Load Condition
And With Rated VRRM Applied
Following Surge
100
10
100
1000
10000
Square Wave Pulse Duration - t p (microsec)
Fig. 7 - Maximum Non-Repetitive Surge Current
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 = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR
4
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20L15TPbF
Bulletin PD-20844 09/04
Outline Table
10.54 (0.41)
1.32 (0.05)
MAX.
3.78 (0.15)
3.54 (0.14)
2.92 (0.11)
2.54 (0.10)
TERM 2
15.24 (0.60)
14.84 (0.58)
1
1.22 (0.05)
DIA.
Base
Cathode
6.48 (0.25)
6.23 (0.24)
2°
3
14.09 (0.55)
3.96 (0.16)
13.47 (0.53)
3.55 (0.14)
0.10 (0.004)
1
Cathode
3
Anode
2.04 (0.080) MAX.
1.40 (0.05)
2.89 (0.11)
1.15 (0.04)
2.64 (0.10)
0.94 (0.04)
0.69 (0.03)
1
3
0.61 (0.02) MAX.
4.57 (0.18)
Conform to JEDEC outline TO-220AC
Dimensions in millimeters and (inches)
4.32 (0.17)
5.08 (0.20) REF.
Part Marking Information
IRXC Assembly Line
EXAMPLE: THIS IS A 20L15T
LOT CODE 1789
ASSEMBLED ON WW 19, 2001
IN THE ASSEMBLY LINE "C"
PART NUMBER
INTERNATIONAL
RECTIFIER
LOGO
DATE CODE
ASSEMBLY
LOT CODE
IRMX Assembly Line
EXAMPLE: THIS IS A 20L15T
LOT CODE 1789
ASSEMBLED ON WW 19, 2001
IN THE ASSEMBLY LINE "C"
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P = LEAD-FREE
YEAR 1 = 2001
WEEK 19
LINE C
PART NUMBER
INTERNATIONAL
RECTIFIER
LOGO
DATE CODE
ASSEMBLY
LOT CODE
YEAR 1 = 2001
WEEK 19
P = LEAD-FREE
5
20L15TPbF
Bulletin PD-20844 09/04
Ordering Information Table
Device Code
20
L
15
T
PbF
1
2
3
4
5
1
-
2
-
Current Rating (20 = 20A)
Schottky "L" Series
3
-
Voltage Code (15 = 15V)
4
-
Package
5
-
T = TO-220
! none = Standard Production
! 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. 09/04
6
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