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Электронный компонент: 18TQ045

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Major Ratings and Characteristics
I
F(AV)
Rectangular
18
A
waveform
V
RRM
range
35 to 45
V
I
FSM
@ tp = 5 s sine
1800
A
V
F
@
18 Apk, T
J
= 125C
0.53
V
T
J
range
- 55 to 175
C
Characteristics
18TQ
Units
Description/Features
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 175C
junction temperature. Typical applications are in switching
power supplies, converters, free-wheeling diodes, and re-
verse battery protection.
175 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
Bulletin PD-20178 rev. C 07/03
18TQ...
18TQ...S
I
F(AV)
= 18Amp
V
R
= 35 to 45V
SCHOTTKY RECTIFIER
18 Amp
1
www.irf.com
Case Styles
18TQ...
TO-220AC
18TQ... S
D
2
PAK
Anode
1
3
Base
Cathode
2
N/C
Anode
1
3
Cathode
Base
Cathode
2
18TQ... Series
2
Bulletin PD-20178 rev. C 07/03
www.irf.com
V
FM
Max. Forward Voltage Drop (1)
0.60
V
@ 18A
* See Fig. 1
0.72
V
@ 36A
0.53
V
@ 18A
0.67
V
@ 36A
I
RM
Max. Reverse Leakage Current (1)
2.5
mA
T
J
= 25 C
* See Fig. 2
25
mA
T
J
= 125 C
C
T
Max. Junction Capacitance
1400
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25 C
L
S
Typical Series Inductance
8.0
nH
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
10000
V/ s
(Rated V
R
)
T
J
= 25 C
T
J
= 125 C
V
R
= rated V
R
Electrical Specifications
Parameters
18TQ
Units
Conditions
(1) Pulse Width < 300s, Duty Cycle < 2%
T
J
Max. Junction Temperature Range
-55 to 175
C
T
stg
Max. Storage Temperature Range
-55 to 175
C
R
thJC
Max. Thermal Resistance Junction
1.50
C/W DC operation * See Fig. 4
to Case
R
thCS
Typical Thermal Resistance, Case to
0.50
C/W Mounting surface , smooth and greased
Heatsink
wt
Approximate Weight
2 (0.07)
g (oz.)
T
Mounting Torque
Min.
6 (5)
Max.
12 (10)
Thermal-Mechanical Specifications
Parameters
18TQ
Units
Conditions
Kg-cm
(Ibf-in)
I
F(AV)
Max. Average Forward Current
18
A
50% duty cycle @ T
C
= 149 C, rectangular wave form
* See Fig. 5
I
FSM
Max. Peak One Cycle Non-Repetitive
1800
5s Sine or 3s Rect. pulse
Surge Current * See Fig. 7
390
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
24
mJ
T
J
= 25 C, I
AS
= 3.6 Amps, L = 3.7 mH
I
AR
Repetitive Avalanche Current
3.6
A
Current decaying linearly to zero in 1 sec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Parameters
18TQ Units
Conditions
Absolute Maximum Ratings
A
Following any rated
load condition and
with rated V
RRM
applied
Part number
18TQ035
18TQ040
18TQ045
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
35
40
45
Voltage Ratings
18TQ... Series
3
Bulletin PD-20178 rev. C
07/03
www.irf.com
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
100
1000
10000
0
10
20
30
40
50
T = 25C
J
Reverse Voltage - V (V)
R
T
J
u
n
c
ti
o
n
C
a
p
a
c
i
t
anc
e -

C


(
p
F
)
.001
.01
.1
1
10
.00001
.0001
.001
.01
.1
1
10
100
D = 0.33
D = 0.50
D = 0.25
D = 0.17
D = 0.08
1
th
J
C
t , Rectangular Pulse Duration (Seconds)
Th
e
r
m
a
l
Im
p
e
d
a
n
c
e
-
Z





(

C
/W
)
Single Pulse
(Thermal Resistance)
2
t
1
t
P
DM
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1
J
DM thJC C
2
Fig. 1 - Maximum Forward Voltage Drop Characteristics
.1
1
10
100
1000
0
.2
.4
.6
.8
1
1.2
1.4
1.6
FM
F
I
n
s
t
an
t
a
n
eous
F
o
r
w
ar
d
C
u
rre
n
t

- I


(A
)
T = 175C
T = 125C
T = 25C
J
J
J
Forward Voltage Drop - V (V)
.0001
.001
.01
.1
1
10
100
1000
0
5 10 15 20 25 30 35 40 45
R
R
T = 175C
150C
125C
100C
75C
50C
25C
J
Reverse Voltage - V (V)
R
ev
er
s
e
C
u
r
r
e
n
t

-
I

(
m
A)
18TQ... Series
4
Bulletin PD-20178 rev. C 07/03
www.irf.com
Fig. 8 - Unclamped Inductive Test Circuit
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
Fig. 6 - Forward Power Loss Characteristics
Fig. 7 - Maximum Non-Repetitive Surge Current
150
155
160
165
170
175
180
0
4
8
12
16
20
24
28
DC
A
l
l
o
wa
b
l
e
Ca
s
e

T
e
m
p
e
r
a
t
u
re
-
(

C
)
Average Forward Current - I (A)
F(AV)
18TQ
R (DC) = 1.50C/W
thJC
0
5
10
15
0
4
8
12
16
20
24
28
DC
Av
e
r
a
g
e
Po
w
e
r

L
o
s
s
-

(
W
at
t
s
)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Limit
Average Forward Current - I (A)
100
1000
10000
10
100
1000
10000
FS
M
p
N
o
n
-
Re
p
e
t
i
ti
v
e

S
u
r
g
e
Cu
r
r
e
n
t

-
I



(
A
)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
Square Wave Pulse Duration - t (microsec)
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
18TQ... Series
5
Bulletin PD-20178 rev. C
07/03
www.irf.com
Outline Table
Conform to JEDEC outline TO-220AC
Dimensions in millimeters and (inches)
3.78 (0.15)
3.54 (0.14)
10.54 (0.41)
MAX.
DIA.
15.24 (0.60)
14.84 (0.58)
2.92 (0.11)
2.54 (0.10)
1
TERM 2
14.09 (0.55)
13.47 (0.53)
3.96 (0.16)
3.55 (0.14)
0.94 (0.04)
0.69 (0.03)
4.57 (0.18)
4.32 (0.17)
3
0.61 (0.02) MAX.
5.08 (0.20) REF.
1.32 (0.05)
1.22 (0.05)
6.48 (0.25)
6.23 (0.24)
2
0.10 (0.004)
1.40 (0.05)
1.15 (0.04)
2.89 (0.11)
2.64 (0.10)
1
3
2.04 (0.080) MAX.
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
10.16 (0.40)
REF.
8.89 (0.35)
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) MAX.
5.08 (0.20) REF.
1.32 (0.05)
1.22 (0.05)
1
3
6.47 (0.25)
6.18 (0.24)
93
REF.
2.61 (0.10)
2.32 (0.09)
5.28 (0.21)
4.78 (0.19)
4.69 (0.18)
4.20 (0.16)
0.55 (0.02)
0.46 (0.02)
14.73 (0.58)
15.49 (0.61)
1.40 (0.055)
1.14 (0.045)
3X
0.93 (0.37)
0.69 (0.27)
2X
11.43 (0.45)
17.78 (0.70)
8.89 (0.35)
3.81 (0.15)
2.08 (0.08)
2X
2.54 (0.10)
2X
MINIMUM RECOMMENDED FOOTPRINT
2
Anode
1
3
Base
Cathode
Cathode
Anode
1
3
Base
Cathode
2
N/C