I
F(AV)
Rectangular waveform
175
A
@ T
C
107
C
I
DC
Maximum
248
A
V
RRM
45
V
I
FSM
@ tp = 5 s sine
8700
A
V
F
@
175 Apk typical
0.61
V
@ T
J
150
C
T
J
range
- 55 to 150
C
SCHOTTKY RECTIFIER
175 Amp
175BGQ045
175BGQ045J
Bulletin PD-20710 rev. D 12/02
www.irf.com
Characteristics
175BGQ045
Units
The 175BGQ045 Schottky rectifier has been optimized for ultra
low forward voltage drop specifically for low voltage output in high
current AC/DC power supplies.
The proprietary barrier technology allows for reliable operation up
to 150C junction temperature. Typical applications are in
switching power supplies, converters, reverse battery protection,
and redundant power subsystems.
150C T
J
operation
High Frequency Operation
Ultra low forward voltage drop
Continuous High Current operation
Guard ring for enhanced ruggedness and long term
reliability
PowIRtab
TM
package
Major Ratings and Characteristics
Description/ Features
1
Case Styles
175BGQ045
175BGQ045J
175BGQ045, 175BGQ045J
Bulletin PD-20710 rev. D 12/02
www.irf.com
2
Voltage Ratings
V
FM
Forward Voltage Drop (1) (2)
0.53 0.56
V
@ 100A
0.64 0.69
V
@ 175A
0.48 0.52
V
@ 100A
0.61 0.64
V
@ 175A
I
RM
Reverse Leakage Current (1)
0.6
2
mA
T
J
= 25 C
360 640
mA
T
J
= 125C
1200 2000 mA
T
J
= 150 C
V
R
= 45V
V
F(TO)
Threshold Voltage
0.352
V
T
J
=
T
J
max.
r
t
Forward Slope Resistance
1.5
m
C
T
Max. Junction Capacitance
5600
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25 C
L
S
Typical Series Inductance
3.5
nH
Measured from tab to mounting plane
dv/dt Max. Voltage Rate of Change
10000
V/ s
(Rated V
R
)
T
J
Max. Junction Temperature Range
-55 to 150
C
T
stg
Max. Storage Temperature Range
-55 to 150
C
R
thJC
Max. Thermal Resistance Junction
0.25
C/W
DC operation
to Case
R
thCS
Typical Thermal Resistance, Case to
0.20
C/W
Mounting surface , smooth and greased
Heatsink
wt
Approximate Weight
5 (0.18)
g (oz.)
T
Mounting Torque
Min.
1.2 (10)
Max.
2.4 (20)
Case Style
PowIRtab
TM
N*m
(Ibf-in)
Thermal-Mechanical Specifications
Parameters
175BGQ
Units
Conditions
I
F(AV)
Max. Average Forward Current
175
A
50% duty cycle @ T
C
= 107C, rectangular wave form
I
F(RMS)
RMS Forward Current
248
A
T
C
= 104C
I
FSM
Max. Peak One Cycle Non-Repetitive
8700
5s Sine or 3s Rect. pulse
Surge Current
1550
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
40
mJ
T
J
= 25 C, I
AS
= 6 Amps, L = 2.0 mH
I
AR
Repetitive Avalanche Current
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
175BGQ
Units
Conditions
Absolute Maximum Ratings
A
Following any rated
load condition and
with rated V
RRM
applied
T
J
= 25 C
V
R
= rated V
R
Electrical Specifications
Parameters
175BGQ
Units
Conditions
Typ. Max.
(1) Pulse Width < 300s, Duty Cycle < 2%
(2) V
FM
= V
F(TO)
+ r
t
x I
F
Part number
175BGQ045
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
45
T
J
= 150 C
175BGQ045, 175BGQ045J
3
Bulletin PD-20710 rev. D 12/02
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
Fig. 1 - Maximum Forward Voltage Drop Characteristics
1
10
100
1000
0
0.2
0.4
0.6
0.8
1
1.2
1.4
F
FM
T = 150C
T = 125C
T = 25C
J
J
J
Forward Voltage Drop - V (V)
I
n
s
t
a
n
t
a
n
e
o
u
s
F
o
rw
a
r
d
C
u
rr
e
n
t
-
I
(
A
)
0.01
0.1
1
10
100
1000
10000
0
5
10 15 20 25 30 35 40 45
R
R
125C
100C
75C
50C
25C
R
e
v
e
r
s
e Cu
r
r
en
t
-
I
(
m
A
)
Reverse Voltage - V (V)
T = 150C
J
1000
10000
0
10
20
30
40
50
R
T
J
u
n
c
t
i
o
n
Cap
a
c
i
t
a
n
c
e - C (
p
F
)
Reverse Voltage - V (V)
T = 25C
J
0.01
0.1
1
0.00001
0.0001
0.001
0.01
0.1
1
10
th
J
C
t , Rectangular Pulse Duration (Seconds)
Single Pulse
(Thermal Resistance)
1
T
h
e
r
ma
l
Imp
e
d
a
n
c
e
Z
(
C
/
W
)
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1
2
J
thJC
C
DM
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
2
t
1
t
P
DM
175BGQ045, 175BGQ045J
Bulletin PD-20710 rev. D 12/02
www.irf.com
4
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
(3) Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 80% rated V
R
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
50
60
70
80
90
100
110
120
130
140
150
0
50
100
150
200
250
300
DC
Al
l
o
w
a
b
l
e
C
a
s
e
T
e
m
p
e
r
a
t
u
r
e
-
(
C
)
F(AV)
Average Forward Current - I (A)
see note (3)
Square wave (D = 0.50)
80% Rated V applied
R
0
25
50
75
100
125
150
175
200
0
50
100
150
200
250
DC
A
v
er
a
g
e Pow
e
r
L
o
s
s
- (
W
at
t
s
)
F(AV)
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
Average Forward Current - I (A)
1000
10000
10
100
1000
10000
FS
M
N
o
n
-
R
e
p
e
t
i
t
i
v
e
S
u
r
g
e
Cu
r
r
e
n
t
-
I
(
A
)
p
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
Square Wave Pulse Duration - t (microsec)
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