Bulletin PD-20178 rev. C 07/03
18TQ...
18TQ...S
SCHOTTKY RECTIFIER
18 Amp
IF(AV) = 18Amp
VR = 35 to 45V
Major Ratings and Characteristics
Description/Features
Characteristics
18TQ
Units
IF(AV) Rectangular
18
A
35 to 45
V
waveform
VRRM range
IFSM @ tp = 5 µs sine
1800
A
VF
@ 18 Apk, TJ = 125°C
0.53
V
TJ
range
- 55 to 175
°C
The 18TQ Schottky rectifier series has been optimized for
low reverse leakage at high temperature. The proprietary
barrier technology allows for reliable operation up to 175°C
junction temperature. Typical applications are in switching
power supplies, converters, free-wheeling diodes, and reverse battery protection.
175° C TJ 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
Case Styles
18TQ...
18TQ... S
Base
Cathode
Base
Cathode
2
2
1
Cathode
TO-220AC
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1
3
Anode
3
Anode
N/C
D2PAK
1
18TQ... Series
Bulletin PD-20178 rev. C 07/03
Voltage Ratings
Part number
VR
18TQ035
18TQ040
18TQ045
35
40
45
Max. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward Current
* See Fig. 5
IFSM
Max. Peak One Cycle Non-Repetitive
18TQ
Units
18
A
1800
A
Surge Current * See Fig. 7
390
EAS
Non-Repetitive Avalanche Energy
24
mJ
IAR
Repetitive Avalanche Current
3.6
A
Conditions
50% duty cycle @ TC = 149° C, rectangular wave form
5µs Sine or 3µs Rect. pulse
10ms Sine or 6ms Rect. pulse
Following any rated
load condition and
with rated VRRM applied
TJ = 25 °C, IAS = 3.6 Amps, L = 3.7 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
VFM
Max. Forward Voltage Drop
(1)
* See Fig. 1
IRM
18TQ
Units
0.60
V
@ 18A
Conditions
0.72
V
@ 36A
0.53
V
@ 18A
0.67
V
@ 36A
Max. Reverse Leakage Current (1)
2.5
mA
TJ = 25 °C
* See Fig. 2
25
mA
TJ = 125 °C
TJ = 25 °C
TJ = 125 °C
VR = rated VR
CT
Max. Junction Capacitance
1400
pF
VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C
LS
Typical Series Inductance
8.0
nH
Measured lead to lead 5mm from package body
10000
V/ µs
dv/dt Max. Voltage Rate of Change
(Rated VR)
(1) Pulse Width < 300µs, Duty Cycle < 2%
Thermal-Mechanical Specifications
Parameters
2
18TQ
Units
TJ
Max. Junction Temperature Range
-55 to 175
°C
Tstg
Max. Storage Temperature Range
Conditions
-55 to 175
°C
RthJC Max. Thermal Resistance Junction
to Case
1.50
°C/W
DC operation
RthCS Typical Thermal Resistance, Case to
Heatsink
0.50
°C/W
Mounting surface , smooth and greased
wt
Approximate Weight
T
Mounting Torque
2 (0.07)
Min.
6 (5)
Max.
12 (10)
* See Fig. 4
g (oz.)
Kg-cm
(Ibf-in)
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18TQ... Series
Bulletin PD-20178 rev. C 07/03
1000
1000
T =175°C
J
ReverseCurrent - I (mA)
R
100
125°C
1
100°C
75°C
.1
50°C
.01
25°C
.001
.0001
0
10
ReverseVoltage- VR(V)
T =125°C
J
10000
1
.2
.4
.6
.8
10 15 20 25 30 35 40 45
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
T = 25°C
J
.1
0
5
T =175°C
J
JunctionCapacitance- C (pF)
T
InstantaneousForwardCurrent - I (A)
F
100
150°C
10
1
1.2
1.4
T =25°C
J
1000
100
0
1.6
10
20
30
40
50
ReverseVoltage- V (V)
R
ForwardVoltageDrop- V (V)
FM
Fig. 1 - Maximum Forward Voltage Drop Characteristics
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Thermal Impedance- ZthJC(°C/W
)
10
1
.1
D=0.50
D=0.33
D=0.25
D=0.17
D=0.08
P
DM
t
1
t2
Notes:
1. Dutyfactor D= t1/ t2
.01
SinglePulse
(Thermal Resistance)
.001
.00001
.0001
.001
2. PeakT =P xZ
+T
J DM thJC C
.01
.1
1
10
100
t , Rectangular PulseDuration(Seconds)
1
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics
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3
18TQ... Series
Bulletin PD-20178 rev. C 07/03
15
18TQ
RthJC (DC) =1.50°C/W
175
AveragePower Loss- (W
atts)
AllowableCaseTemperature- (°C)
180
170
165
DC
160
155
150
0
4
8
12
16
20
AverageForwardCurrent - I
24
F(AV)
D=0.08
D=0.17
D=0.25
D=0.33
10 D=0.50
5
0
0
28
DC
RMSLimit
4
8
12
16
20
AverageForwardCurrent - I
(A)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
24
F(AV)
28
(A)
Fig. 6 - Forward Power Loss Characteristics
(A)
10000
Non-Repetitive Surge Current - I
FSM
At Any Rated Load Condition
And With Rated VRRM Applied
Following Surge
1000
100
10
100
1000
10000
Square Wave Pulse Duration - t p (microsec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
DUT
IRFP460
Rg = 25 ohm
CURRENT
MONITOR
HIGH-SPEED
SWITCH
FREE-WHEEL
DIODE
+
Vd = 25 Volt
40HFL40S02
Fig. 8 - Unclamped Inductive Test Circuit
4
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18TQ... Series
Bulletin PD-20178 rev. C 07/03
Outline Table
10.54 (0.41)
1.32 (0.05)
MAX.
3.78 (0.15)
3.54 (0.14)
1.22 (0.05)
DIA.
6.48 (0.25)
6.23 (0.24)
2.92 (0.11)
2.54 (0.10)
TERM 2
15.24 (0.60)
14.84 (0.58)
1
2°
3
14.09 (0.55)
3.96 (0.16)
13.47 (0.53)
3.55 (0.14)
Base
Cathode
0.10 (0.004)
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
1
3
Cathode
0.61 (0.02) MAX.
4.57 (0.18)
3
Anode
4.32 (0.17)
5.08 (0.20) REF.
Conform to JEDEC outline TO-220AC
Dimensions in millimeters and (inches)
4.69 (0.18)
4.20 (0.16)
10.16 (0.40)
REF.
1.32 (0.05)
1.22 (0.05)
6.47 (0.25)
15.49 (0.61)
93°
6.18 (0.24)
14.73 (0.58)
5.28 (0.21)
2.61 (0.10)
4.78 (0.19)
2.32 (0.09)
0.55 (0.02)
8.89 (0.35)
3X
REF.
1.40 (0.055)
1.14 (0.045)
2X
Base
Cathode
0.46 (0.02)
0.93 (0.37)
MINIMUM RECOMMENDED FOOTPRINT
0.69 (0.27)
11.43 (0.45)
2
1
3
4.57 (0.18)
4.32 (0.17)
2
1
17.78 (0.70)
0.61 (0.02) MAX.
5.08 (0.20) REF.
3
8.89 (0.35)
3.81 (0.15)
Anode
N/C
2.08 (0.08)
2X
2
Conform to JEDEC outline D Pak (SMD-220)
Dimensions in millimeters and (inches)
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2.54 (0.10)
2X
5
18TQ... Series
Bulletin PD-20178 rev. C 07/03
Marking Information
THIS IS A 18TQ045-S
LOT CODE 8024
ASSEMBLED ON WW 02, 2000
IN THE ASSEMBLY LINE "L"
INTERNATIONAL
RECTIFIER
LOGO
PART NUMBER
18TQ045S
DATE CODE
YEAR 0 = 2000
WEEK 02
LINE L
ASSEMBLY
LOT CODE
Tape & Reel Information
TRR
1.60 (0.063)
1.50 (0.059)
4.10 (0.161)
3.90 (0.153)
FEED DIRECTION
1.85 (0.073)
1.65 (0.065)
1.60 (0.063)
1.50 (0.059)
DIA.
0.368 (0.0145)
0.342 (0.0135)
11.60 (0.457)
11.40 (0.449)
15.42 (0.609)
15.22 (0.601)
TRL
1.75 (0.069)
10.90 (0.429)
10.70 (0.421)
1.25 (0.049)
24.30 (0.957)
23.90 (0.941)
DIA.
16.10 (0.634)
4.72 (0.186)
4.52 (0.178)
15.90 (0.626)
FEED DIRECTION
13.50 (0.532)
12.80 (0.504) DIA.
360 (14.173)
DIA. MAX.
26.40 (1.039)
24.40 (0.961)
60 (2.362)
SMD-220 Tape & Reel
When ordering, indicate the part
number, part orientation, and the
quantity. Quantities are in multiples
of 800 pieces per reel for both
TRL and T RR.
DIA. MIN.
Dimensions in millimeters and (inches)
6
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18TQ... Series
Bulletin PD-20178 rev. C 07/03
Ordering Information Table
Device Code
18
T
Q
045
S
1
2
3
4
5
1
-
Essential Part Number
2
-
T = TO-220
3
-
Q = Schottky Q Series
035 = 35V
4
-
Voltage Rating
040 = 40V
5
-
S = D2Pak
045 = 45V
18TQ045
********************************************
* This model has been developed by
*
* Wizard SPICE MODEL GENERATOR (1999) *
*
(International Rectifier Corporation)
*
* Contains Proprietary Information
*
********************************************
* SPICE Model Diode is composed by a
*
* simple diode plus paralled VCG2T
*
********************************************
.SUBCKT 18TQ045 ANO CAT
D1 ANO 1 DMOD (0.10899)
*Define diode model
.MODEL DMOD D(IS=4.49213078685186E-05A,N=1.23149728754907,BV=52V,
+ IBV=9.03115410463162E-02A,RS= 0.000664839,CJO=2.73074429693125E-08,
+ VJ=0.881972575936711,XTI=2, EG=0.789061316955255)
********************************************
*Implementation of VCG2T
VX 1 2 DC 0V
R1 2 CAT TRES 1E-6
.MODEL TRES RES(R=1,TC1=18.1199792035774)
GP1 ANO CAT VALUE={-ABS(I(VX))*(EXP((((-3.316412E-03/18.11998)*((V(2,CAT)*1E6)/(I(VX)+1E-6)1))+1)*6.806625E-02*ABS(V(ANO,CAT)))-1)}
********************************************
.ENDS 18TQ045
Thermal Model Subcircuit
.SUBCKT 18TQ045 5 1
CTHERM1
CTHERM2
CTHERM3
CTHERM4
5
4
3
2
4
3
2
1
6.49E-01
3.46E+00
1.63E+01
3.01E+02
RTHERM1
RTHERM2
RTHERM1
RTHERM1
5
4
3
2
4
3
2
1
6.77E-01
5.70E-01
2.05E-01
3.44E-02
.ENDS 18TQ045
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7
18TQ... Series
Bulletin PD-20178 rev. C 07/03
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level.
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. 07/03
8
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