Bulletin PD-21031 05/05
20TQ...SPbF
SCHOTTKY RECTIFIER
20 Amp
I
F(AV)
= 19Amp
V
R
= 35/45V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 20 Apk, T
J
= 125°C
range
Description/ Features
Units
A
V
A
V
°C
The 20TQ.. Schottky rectifier series 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 T
J
operation
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free ("PbF" suffix)
Values
20
35/ 45
1800
0.51
- 55 to 150
Case Styles
Base
Cathode
2
1
3
N/C
Anode
D
2
PAK
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1
20TQ...SPbF Series
Bulletin PD-21031
10505
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
35
40
45
V
RWM
Max. Working Peak Reverse Voltage (V)
20TQ035SPbF
20TQ040SPbF
20TQ045SPbF
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
20TQ
20
1800
400
27
4
Units
A
Conditions
50% duty cycle @ T
C
= 116° C, rectangular wave form
5µs Sine or 3µs Rect. pulse
10ms Sine or 6ms Rect. pulse
Following any rated
load condition and
with rated V
RRM
applied
A
mJ
A
T
J
= 25 °C, I
AS
= 4 Amps, L = 3.4 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
Max. Forward Voltage Drop
* See Fig. 1
(1)
20TQ
0.57
0.73
0.51
0.67
Units
V
V
V
V
mA
mA
pF
nH
V/ µs
@ 20A
@ 40A
@ 20A
@ 40A
T
J
= 25 °C
T
J
= 125 °C
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current (1)
* See Fig. 2
Max. Junction Capacitance
Typical Series Inductance
2.7
105
1400
8.0
10000
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
(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
20TQ
-55 to 150
-55 to 150
1.50
0.50
2 (0.07)
Min.
Max.
6 (5)
12 (10)
Units
°C
°C
°C/W
°C/W
g (oz.)
Kg-cm
(Ibf-in)
DC operation
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case
R
thCS
Typical Thermal Resistance, Case to
Heatsink
wt
T
Approximate Weight
Mounting Torque
Marking Device
* See Fig. 4
Mounting surface , smooth and greased
20TQ...S
Case style D
2
Pak
2
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20TQ...SPbF Series
Bulletin PD-21031
05/05
10
00
10
00
10
0
1
0
1
.1
.0
1
.0 1
0
0
T =1 0 C
5°
J
1 5C
2°
1 0C
0°
7°
5C
5°
0C
2°
5C
10
0
In ta ta e u F rw rdC rre t - I (A
s n nos o a
u n
)
F
R v r eC rre t - I (m )
e es u n
A
R
5
1 1 2 2 3 3 4 4
0 5 0 5 0 5 0 5
R v rs V lta e- V (V
ee e o g
R )
1
0
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
T =1 0C
5°
J
J n tio C p c n e- C (p )
u c n a a ita c
F
T
100
00
T =1 5C
2°
J
T= 2°
5C
J
1
T =2 °
5C
J
10
00
.1
0
.2
.4
.6
.8
1
1
.2 1
.4
1
.6
1
.8
10
0
0
1
0
2
0
3
0
4
0
5
0
F rw rdV lta eD p- V (V
o a
o g ro
)
F
M
R v rs V lta e- V (V
ee e o g
)
R
Fig. 1 - Maximum Forward Voltage Drop Characteristics
1
0
T e a Im e a c - Zth C (° /W
h rm l p d n e
C )
J
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
.1
D=0 0
.5
D=0 3
.3
D=0 5
.2
D=0 7
.1
D=0 8
.0
P
M
D
t
1
t2
N te :
o s
1 D tyfa to D= t1/ t2
. u
c r
2 P a T =P xZ
. ek
+T
J D
M th C C
J
.0
1
.1
1
1
0
10
0
.0
1
S g P ls
in le u e
(T e a R s ta c )
h rm l e is n e
.0 1
0
.0 0 1
00
.0 0
01
.0 1
0
t , R c n u r P ls D ra n(S c n s
e ta g la u e u tio
eod)
1
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
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3
20TQ...SPbF Series
Bulletin PD-21031
10505
15
5
A w b C s T m e tu - (° )
llo a le a e e p ra re C
2T
0Q
R J (D ) =1 0 C
.5 ° /W
th C C
15
4
1
8
D=0 8
.0
1 D=0 7
6
.1
D=0 5
.2
1
4
D=0 3
.3
D=0 0
.5
1
2
1 R SL it
0 M im
8
6
4
2
D
C
15
3
D
C
15
2
15
1
0
A e g P w r L s - (W tts
v ra e o e o s
a )
5
1
0
1
5
2
0
2
5
0
3
0
0
5
1
0
1
5
2
0
2
5
3
0
A e g F rw rdC rre t - IF V (A
v ra e o a
u n
(A ) )
A e g F rw rdC rre t - I
v ra e o a
u n
(A
)
F V
(A )
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
10000
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following Surge
FSM
Fig. 6 - Forward Power Loss Characteristics
Non-Repetitive Surge Current - I
(A)
1000
100
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
HIGH-S
PEED
S CH
WIT
FREE-WHEEL
DIODE
40HF
L40S
02
+
DUT
IR P460
F
R = 25 ohm
g
Vd = 25 Volt
CURR
ENT
MONIT
OR
Fig. 8 - Unclamped Inductive Test Circuit
4
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20TQ...SPbF Series
Bulletin PD-21031
05/05
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 20TQ045S
LOT CODE 8024
ASSEMBLED ON WW 02, 2000
INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
PART NUMBER
20TQ045S
DATE CODE
YEAR 0 = 2000
WEEK 02
P = LEAD-FREE
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