VISHAY 20TQ040

20TQ... Series
Vishay High Power Products
Schottky Rectifier, 20 A
FEATURES
• 150 °C TJ operation
Base
cathode
2
• Low forward voltage drop
• High frequency operation
• High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
TO-220AC
• Guard ring for enhanced ruggedness and long term
reliability
3
Anode
1
Cathode
• Designed and qualified for industrial level
DESCRIPTION
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, freewheeling diodes,
and reverse battery protection.
PRODUCT SUMMARY
IF(AV)
20 A
VR
35 to 45 V
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
CHARACTERISTICS
IF(AV)
Rectangular waveform
VRRM
Range
IFSM
tp = 5 µs sine
VF
20 Apk, TJ = 125 °C
TJ
Range
VALUES
UNITS
20
A
35 to 45
V
1800
A
0.51
V
- 55 to 150
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
Maximum working peak reverse voltage
SYMBOL
VR
VRWM
20TQ035
20TQ040
20TQ045
UNITS
35
40
45
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
TEST CONDITIONS
VALUES
UNITS
Maximum average forward current
See fig. 5
IF(AV)
Maximum peak one cycle
non-repetitive surge current
See fig. 7
IFSM
Non-repetitive avalanche energy
EAS
TJ = 25 °C, IAS = 4 A, L = 3.4 mH
27
mJ
Repetitive avalanche current
IAR
Current decaying linearly to zero in 1 µs
Frequency limited by TJ maximum VA = 1.5 x VR typical
4
A
Document Number: 93278
Revision: 25-Jun-08
50 % duty cycle at TC = 116 °C, rectangular waveform
5 µs sine or 3 µs rect. pulse
10 ms sine or 6 ms rect. pulse
Following any rated load
condition and with rated
VRRM applied
For technical questions, contact: diodes-t[email protected]
20
1800
A
400
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20TQ... Series
Vishay High Power Products
Schottky Rectifier, 20 A
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
TEST CONDITIONS
20 A
Maximum forward voltage drop
See fig. 1
VFM (1)
TJ = 25 °C
40 A
20 A
TJ = 125 °C
40 A
Maximum reverse leakage curent
See fig. 2
IRM (1)
TJ = 25 °C
VR = Rated VR
TJ = 125 °C
Maximum junction capacitance
CT
VR = 5 VDC, (test signal range 100 kHz to 1 MHz) 25 °C
Typical series inductance
LS
Measured lead to lead 5 mm from package body
Maximum voltage rate of change
dV/dt
Note
(1) Pulse width < 300 µs, duty cycle < 2 %
Rated VR
VALUES
UNITS
0.57
0.73
V
0.51
0.67
2.7
mA
105
1400
pF
8.0
nH
10 000
V/µs
VALUES
UNITS
- 55 to 150
°C
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER
SYMBOL
Maximum junction and
storage temperature range
TEST CONDITIONS
TJ, TStg
Maximum thermal resistance,
junction to case
RthJC
DC operation
See fig. 4
1.50
Typical thermal resistance,
case to heatsink
RthCS
Mounting surface, smooth and greased
0.50
2
Approximate weight
Mounting torque
°C/W
g
0.07
oz.
minimum
6 (5)
kgf · cm
maximum
12 (10)
(lbf · in)
20TQ035
Marking device
Case style TO-220AC
20TQ040
20TQ045
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For technical questions, contact: [email protected]
Document Number: 93278
Revision: 25-Jun-08
20TQ... Series
Schottky Rectifier, 20 A
Vishay High Power Products
1000
1000
IR - Reverse Current (mA)
IF - Instantaneous Forward
Current (A)
TJ = 150 °C
100
10
TJ = 150 °C
TJ = 125 °C
TJ = 25 °C
1
100
TJ = 125 °C
10
TJ = 100 °C
1
TJ = 75 °C
TJ = 50 °C
0.1
0.01
TJ = 25 °C
0.001
0.1
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
1.8
5
10
VFM - Forward Voltage Drop (V)
15
20
25
30
35
40
45
VR - Reverse Voltage (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage
CT - Junction Capacitance (pF)
10 000
1000
TJ = 25 °C
100
0
10
20
30
40
50
VR - Reverse Voltage (V)
ZthJC - Thermal Impedance (°C/W)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage
10
1
PDM
0.1
t1
0.01
0.001
0.00001
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
Single pulse
(thermal resistance)
0.0001
0.001
0.01
0.1
t2
Notes:
1. Duty factor D = t1/t2 .
2. Peak TJ = PDM x ZthJC + TC
1
10
.
100
t1 - Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics
Document Number: 93278
Revision: 25-Jun-08
For technical questions, contact: [email protected]
www.vishay.com
3
20TQ... Series
Vishay High Power Products
Schottky Rectifier, 20 A
18
20TQ
RthJC (DC) = 1.50 °C/W
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
16
Average Power Loss (W)
Allowable Case Temperature (°C)
155
145
135
DC
125
14
12
10
RMS limit
8
DC
6
4
2
115
0
0
5
10
15
20
30
25
5
0
10
15
20
25
30
IF(AV) - Average Forward Current (A)
IF(AV) - Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current
Fig. 6 - Forward Power Loss Characteristics
IFSM - Non-Repetitive Surge
Current (A)
10 000
1000
At any rated load condition and
with rated VRRM applied
following surge
100
100
10
1000
10 000
tp - Square Wave Pulse Duration (µs)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
D.U.T.
IRFP460
Rg = 25 Ω
Current
monitor
High-speed
switch
Freewheel
diode
+ Vd = 25 V
40HFL40S02
Fig. 8 - Unclamped Inductive Test Circuit
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For technical questions, contact: [email protected]
Document Number: 93278
Revision: 25-Jun-08
20TQ... Series
Schottky Rectifier, 20 A
Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
20
T
Q
045
-
1
2
3
4
5
1
-
2
-
Current rating (20 = 20 A)
Package:
T = TO-220
3
-
Schottky “Q” series
4
-
Voltage ratings
5
-
None = Standard production
035 = 35 V
040 = 40 V
045 = 45 V
PbF = Lead (Pb)-free
Tube standard pack quantity: 50 pieces
LINKS TO RELATED DOCUMENTS
Dimensions
http://www.vishay.com/doc?95221
Part marking information
http://www.vishay.com/doc?95224
Document Number: 93278
Revision: 25-Jun-08
For technical questions, contact: [email protected]
www.vishay.com
5
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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