Bulletin PD-21052 06/05
20L15TSPbF
SCHOTTKY RECTIFIER
20 Amps
I
F(AV)
= 20Amp
V
R
= 15V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 19 Apk, T
J
=125°C
( Typical)
range
- 55 to 125
°C
15
700
0.25
V
A
V
Description/Features
Units
A
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, convert-
ers, reverse battery protection, and redundant power sub-
systems.
125°C T
J
operation (V
R
< 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)
Values
20
Case Styles
Base
Cathode
2
1
3
N/C
Anode
D
2
PAK
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20L15TSPbF
Bulletin PD-21052 06/05
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
@ T
J
= 100 °C
V
RWM
Max. Working Peak Reverse Voltage (V) @ T
J
= 100 °C
20L15TSPbF
15
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 5
I
FSM
E
AS
I
AR
Max. Peak One Cycle Non-Repetitive
Surge Current * See Fig. 7
Non-Repetitive Avalanche Energy
Repetitive Avalanche Current
700
330
10
2
mJ
A
A
5µs Sine or 3µs Rect. pulse
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
Values
20
Units
A
Conditions
50% duty cycle @ T
C
= 85°C, rectangular wave form
T
J
= 25 °C, I
AS
= 2 Amps, L = 6 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Electrical Specifications
Parameters
V
FM
Forward Voltage Drop
* See Fig. 1
Values
Typ.
-
-
0.25
0.37
-
(1)
-
Max.
0.41
0.52
0.33
0.50
10
600
7.6
-
8
2000
-
Units
V
V
V
V
mA
mA
V
mΩ
pF
nH
@ 19A
@ 40A
@ 19A
@ 40A
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
(1)
I
RM
Reverse Leakage Current
* See Fig. 2
T
J
= 25 °C
T
J
= 100 °C
T
J
=
T
J
max.
V
F(TO)
Threshold Voltage
r
t
C
T
L
S
Forward Slope Resistance
Max. Junction Capacitance
Typical Series Inductance
0.182
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
10000
V/ µs (Rated V
R
)
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
Values
-55 to 125
-55 to 150
1.5
0.50
40
2 (0.07)
Min.
Max.
6 (5)
12 (10)
Units
°C
°C
Conditions
R
thJC
Max. Thermal Resistance
Junction to Case
R
thCS
Typical Thermal Resistance
Case to Heatsink
R
thJA
Max. Thermal Resistance
Junction to Ambient
wt
T
Approximate Weight
Mounting Torque
Marking Device
°C/W DC operation
* See Fig. 4
°C/W Mounting surface , smooth and greased
For TO-220
°C/W DC operation
g (oz.)
Kg-cm
Non-lubricated threads
(Ibf-in)
Case style D
2
Pak
20L15TS
2
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20L15TSPbF
Bulletin PD-21052 06/05
1000
1000
T = 100°C
J
100
75°C
50°C
Reverse Current - I
R
(mA)
10
25°C
1
Instantaneous Forward Current - I
F
(A)
100
0.1
0
3
6
9
12
15
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
10000
Junction Capacitance - C
T
(pF)
10
T = 125°C
J
T = 75°C
J
T = 25°C
J
T
J
= 25°C
1000
1
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Forward Voltage Drop - V
FM
(V)
100
0
5
10
15
20
Reverse Voltage - V
R
(V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
10
T
hermal Impedance Z
thJC
(°C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
0.1
S
ingle Pulse
(T
hermal R
esistance)
Notes:
t1
t2
1. Duty fac tor D = t 1/ t 2
2. Peak T = P
DM
x Z
thJC
+ T
C
J
0.1
1
10
100
0.01
0.00001
0.0001
0.001
0.01
t 1 , Rectangular Pulse Duration (S
econds)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
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20L15TSPbF
Bulletin PD-21052 06/05
100
Allowa ble Case T
emperature - (°C)
Average Power Los - (Watts)
s
95
90
85
80
75
se e note (2)
14
12
10
8
6
4
2
0
0
4
8
12
16
20
24
0
5
10
15
20
25
30
Average Forward Current - I
F(AV)
(A)
Average Forward Current - I
F(AV)
(A)
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMSLimit
DC
S
quare wave (D = 0.50)
70
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
1000
Non-R
epetitive S
urge Current - I
FS
(A)
M
Fig. 6 - Forward Power Loss Characteristics
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following S
urge
100
10
100
1000
10000
S
quare Wave Pulse Duration - t p (micros
ec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
HIGH-S
PEED
S CH
WIT
FREE-WHEEL
DIODE
40HF
L40S
02
Vd = 25 Volt
DUT
IR
FP460
R = 25 ohm
g
+
CURR
ENT
MONIT
OR
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
= 80% rated V
R
4
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20L15TSPbF
Bulletin PD-21052 06/05
Outline Table
Base
Cathode
2
1
3
N/C
Anode
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
Part Marking Information
THIS IS A 20L15TS
LOT CODE 8024
ASSEMBLED ON WW 02, 2000
INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
PART NUMBER
20L15TS
DATE CODE
YEAR 0 = 2000
WEEK 02
P = LEAD-FREE
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