18TT045-F
Vishay High Power Products
High Performance Schottky
Generation 5.0, 18 A
FEATURES
Base
cathode
2
TO-220AC
1
Cathode
3
Anode
•
•
•
•
175 °C high performance Schottky diode
Very low forward voltage drop
Extremely low reverse leakage
Optimized VF vs. IR trade off for high efficiency
•
•
•
•
•
•
Increased ruggedness for reverse avalanche capability
RBSOA available
Negligible switching losses
Submicron trench technology
Compliant to RoHS directive 2002/95/EC
Designed and qualified for industrial level
APPLICATIONS
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•
•
•
•
•
•
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PRODUCT SUMMARY
IF(AV)
18 A
VR
45 V
VF at 18 A at 125 °C
0.51 V
High efficiency SMPS
Automotive
High frequency switching
Output rectification
Reverse battery protection
Freewheeling
DC/DC systems
Increased power density systems
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
CHARACTERISTICS
VALUES
UNITS
45
VRRM
VF
18 Apk, TJ = 125 °C (typical)
TJ
Range
V
0.48
- 55 to 175
°C
18TT045-F
UNITS
45
V
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
SYMBOL
VR
TEST CONDITIONS
TJ = 25 °C
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
TEST CONDITIONS
Maximum average forward current
IF(AV)
Maximum peak one cycle
non-repetitive surge current
IFSM
Non-repetitive avalanche energy
EAS
TJ = 25 °C, IAS = 5.5 A, L = 3.7 mH
IAR
Limited by frequency of operation and time pulse duration so that
TJ < TJ max. IAS at TJ max. as a function of time pulse.
See fig. 8
Repetitive avalanche current
Document Number: 94661
Revision: 01-Apr-09
50 % duty cycle at TC = 157 °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-tech@vishay.com
VALUES
UNITS
18
1800
A
390
56
mJ
IAS at
TJ max.
A
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18TT045-F
Vishay High Power Products High Performance Schottky
Generation 5.0, 18 A
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
TEST CONDITIONS
18 A
Forward voltage drop
VFM
(1)
TJ = 25 °C
36 A
18 A
TJ = 125 °C
36 A
IRM (1)
Reverse leakage current
TJ = 25 °C
VR = Rated VR
TJ = 125 °C
Junction capacitance
CT
VR = 5 VDC (test signal range 100 kHz to 1 MHz), 25 °C
Series inductance
LS
Measured lead to lead 5 mm from package body
Maximum voltage rate of change
dV/dt
Rated VR
TYP.
MAX.
0.553
0.58
UNITS
0.644
0.69
0.478
0.51
0.608
0.65
2.4
150
µA
2.6
12
mA
V
1350
-
pF
8.0
-
nH
-
10 000
V/µs
Note
(1) Pulse width < 300 µs, duty cycle < 2 %
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER
SYMBOL
Maximum junction and
storage temperature range
TEST CONDITIONS
TJ, TStg
VALUES
UNITS
- 55 to 175
°C
Maximum thermal resistance,
junction to case
RthJC
DC operation
1.5
Typical thermal resistance,
case to heatsink
RthCS
Mounting surface, smooth and greased
0.50
°C/W
Approximate weight
Mounting torque
Marking device
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2
2
g
0.07
oz.
minimum
6 (5)
kgf · cm
maximum
12 (10)
Case style TO-220AC
For technical questions, contact: diodes-tech@vishay.com
(lbf · in)
18TT045
Document Number: 94661
Revision: 01-Apr-09
18TT045-F
High Performance Schottky Vishay High Power Products
Generation 5.0, 18 A
100
100
TJ = 175 °C
IR - Reverse Current (mA)
IF - Instantaneous Forward
Current (A)
175 °C
TJ = 25 °C
10
TJ = 125 °C
1
10
150 °C
125 °C
1
100 °C
75 °C
0.1
50 °C
0.01
25 °C
0.001
0.0001
0
0.2
0.4
0.6
0.8
1.0
0
5
10
15
20
25
30
35
40
45
VFM - Forward Voltage Drop (V)
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
100
0
5
10
15
20
25
30
35
40
45
VR - Reverse Voltage (V)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage
Thermal Impedance ZthJC (°C/W)
10
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
0.1
Single pulse
(Thermal resistance)
0.01
0.00001
0.0001
0.001
0.01
0.1
1
t1 - Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics
Document Number: 94661
Revision: 01-Apr-09
For technical questions, contact: diodes-tech@vishay.com
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3
18TT045-F
Vishay High Power Products High Performance Schottky
Generation 5.0, 18 A
15
170
Average Power Loss (W)
Allowable Case Temperature (°C)
180
DC
160
150
140
Square wave (D = 0.50)
80 % rated VR applied
See note (1)
130
120
180°
120°
90°
60°
30°
12
DC
9
RMS limit
6
3
0
0
5
10
15
20
25
30
0
5
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
100
10
100
1000
10 000
tp - Square Wave Pulse Duration (µs)
Fig. 7 - Maximum Non-Repetitive Surge Current
Note
Formula used: TC = TJ - (Pd + PdREV) x RthJC;
Pd = Forward power loss = IF(AV) x VFM at (IF(AV)/D) (see fig. 6);
PdREV = Inverse power loss = VR1 x IR (1 - D); IR at VR1 = 80 % rated VR
(1)
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For technical questions, contact: diodes-tech@vishay.com
Document Number: 94661
Revision: 01-Apr-09
18TT045-F
High Performance Schottky Vishay High Power Products
Generation 5.0, 18 A
Avalanche Current (A)
1000
100
TJ = 25 °C
TJ = 125 °C
10
TJ = 175 °C
1
1
10
100
Rectangular Pulse Duration (µs)
Fig. 8 - Reverse Bias Safe Operating Area (Avalanche Current vs. Rectangular Pulse Duration)
Avalanche Energy (mJ)
100
10
TJ = 25 °C
TJ = 125 °C
TJ = 175 °C
1
1
10
100
Rectangular Pulse Duration (µs)
Fig. 9 - Reverse Bias Safe Operating Area (Avalanche Energy vs. Rectangular Pulse Duration)
Document Number: 94661
Revision: 01-Apr-09
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
5
18TT045-F
Vishay High Power Products High Performance Schottky
Generation 5.0, 18 A
ORDERING INFORMATION TABLE
Device code
18
T
T
045
1
2
3
4
1
-
Current rating (18 A)
2
-
Package:
-
F
5
T = TO-220
3
-
T = Trench
4
-
Voltage code (045 = 45 A)
5
-
F = RoHS compliant and totally lead (Pb)-free
Tube standard pack quantity: 50 pieces
LINKS TO RELATED DOCUMENTS
Dimensions
www.vishay.com/doc?95221
Part marking information
www.vishay.com/doc?95068
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6
For technical questions, contact: diodes-tech@vishay.com
Document Number: 94661
Revision: 01-Apr-09
Outline Dimensions
Vishay Semiconductors
TO-220AC
DIMENSIONS in millimeters and inches
(6)
B
Seating
plane
A
E
A
ØP
0.014 M B A M
E2 (7)
Q
3
D
D
L1
E
A1
C
Thermal pad
C
H1
D2
Detail B
(6)
2 x b2
2xb
Detail B
θ
D1
1
2
A
(6)
H1
(7)
(6) D
1
2 3
Lead tip
L3
C
E1
(6)
Lead assignments
Diodes
1 + 2 - Cathode
3 - Anode
L4
L
c
e1
A
Conforms to JEDEC outline TO-220AC
View A - A
A2
0.015 M B A M
SYMBOL
MILLIMETERS
INCHES
NOTES
SYMBOL
MIN.
MAX.
MIN.
MAX.
A
4.25
4.65
0.167
0.183
E1
A1
1.14
1.40
0.045
0.055
A2
2.56
2.92
0.101
0.115
b
0.69
1.01
0.027
0.040
b1
0.38
0.97
0.015
0.038
b2
1.20
1.73
0.047
0.068
b3
1.14
1.73
0.045
0.068
MILLIMETERS
INCHES
MAX.
MIN.
MAX.
6.86
8.89
0.270
0.350
6
E2
-
0.76
-
0.030
7
e
2.41
2.67
0.095
0.105
e1
4.88
5.28
0.192
0.208
4
H1
6.09
6.48
0.240
0.255
L
13.52
14.02
0.532
0.552
4
L1
3.32
3.82
0.131
0.150
c
0.36
0.61
0.014
0.024
L3
1.78
2.13
0.070
0.084
c1
0.36
0.56
0.014
0.022
4
L4
0.76
1.27
0.030
0.050
D
14.85
15.25
0.585
0.600
3
ØP
3.54
3.73
0.139
0.147
Q
2.60
3.00
0.102
0.118
D1
8.38
9.02
0.330
0.355
D2
11.68
12.88
0.460
0.507
6
E
10.11
10.51
0.398
0.414
3, 6
NOTES
MIN.
90° to 93°
6, 7
2
2
90° to 93°
Notes
(1) Dimensioning and tolerancing as per ASME Y14.5M-1994
(2) Lead dimension and finish uncontrolled in L1
(3) Dimension D, D1 and E do not include mold flash. Mold flash shall not exceed 0.127 mm (0.005") per side. These dimensions are measured
at the outermost extremes of the plastic body
(4) Dimension b1, b3 and c1 apply to base metal only
(5) Controlling dimension: inches
(6) Thermal pad contour optional within dimensions E, H1, D2 and E1
(7) Dimension E2 x H1 define a zone where stamping and singulation irregularities are allowed
(8) Outline conforms to JEDEC TO-220, D2 (minimum) where dimensions are derived from the actual package outline
Document Number: 95221
Revision: 07-Mar-11
For technical questions within your region, please contact one of the following:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
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1
Legal Disclaimer Notice
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Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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 in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please
contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications.
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. Product names and markings noted herein may be trademarks of their respective owners.
Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
1
Document Number: 91000
