Major Ratings and Characteristics
Description/ Features
I
F(AV)
Rectangular
120
A
waveform
V
RRM
range
35 to 45
V
I
FSM
@ tp = 5 s sine
29,000
A
V
F
@
120Apk, T
J
=125C
0.52
V
T
J
range
- 55 to 150
C
Characteristics
120NQ..
Units
The 120NQ...(R) high current Schottky rectifier module 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, convert-
ers, free-wheeling diodes, and reverse battery protection.
150 C T
J
operation
Unique high power, Half-Pak module
Replaces two parallel DO-5's
Easier to mount and lower profile than DO-5's
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
SCHOTTKY RECTIFIER
120 Amp
120NQ...(R) SERIES
Bulletin PD-2.224 rev. D 07/04
1
www.irf.com
Case Styles
120NQ...(R)
D-67
I
F(AV)
= 120 A
V
R
= 35 to 45V
120NQ...(R) Series
Bulletin PD-2.224 rev. D 07/04
2
www.irf.com
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
0.40
C/W DC operation * See Fig. 4
to Case
R
thCS
Typical Thermal Resistance, Case to
0.15
C/W Mounting surface , smooth and greased
Heatsink
wt
Approximate Weight
25.6 (0.9) g (oz.)
T
Mounting Torque
Min.
17 (15)
Non-lubricated threads
Max.
29 (25)
Terminal Torque
Min.
23 (20)
Max.
46 (40)
Case Style
HALF PAK Module
Thermal-Mechanical Specifications
Parameters
120NQ Units
Conditions
Kg-cm
(Ibf-in)
V
FM
Max. Forward Voltage Drop (1)
0.57
V
@ 120A
* See Fig. 1
0.73
V
@ 240A
0.52
V
@ 120A
0.69
V
@ 240A
I
RM
Max. Reverse Leakage Current (1)
10
mA
T
J
= 25 C
* See Fig. 2
500
mA
T
J
= 125 C
V
F(TO)
Threshold Voltage
0.32
V
T
J
= T
J
max.
r
t
Forward Slope Resistance
1.37
m
C
T
Max. Junction Capacitance
5200
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25 C
L
S
Typical Series Inductance
7.0
nH
From top of terminal hole to mounting plane
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
Parameters
120NQ Units
Conditions
(1) Pulse Width < 300s, Duty Cycle < 2%
Electrical Specifications
I
F(AV)
Max. Average Forward Current
120
A
50% duty cycle @ T
C
= 106 C, rectangular wave form
* See Fig. 5
I
FSM
Max. Peak One Cycle Non-Repetitive 29,000
5s Sine or 3s Rect. pulse
Surge Current * See Fig. 7
1550
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
81
mJ
T
J
= 25 C, I
AS
= 12 Amps, L = 1.12 mH
I
AR
Repetitive Avalanche Current
12
A
Current decaying linearly to zero in 1 sec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Parameters
120NQ Units
Conditions
Absolute Maximum Ratings
A
Following any rated
load condition and
with rated V
RRM
applied
Part number
120NQ035(R)
120NQ040(R)
120NQ045(R)
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
35
40
45
Voltage Ratings
120NQ...(R) Series
Bulletin PD-2.224 rev. D 07/04
3
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
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
I
n
s
t
an
t
ane
ou
s
F
o
r
w
ar
d
C
u
r
r
e
n
t
-
I
(
A
)
T = 150C
T = 125C
T = 25C
J
J
J
F
FM
Forward Voltage Drop - V (V)
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
rs
e
C
u
r
r
e
n
t
-
I
(m
A
)
T = 150C
J
Reverse Voltage - V (V)
1000
10000
0
10
20
30
40
50
R
T
J
u
nc
t
i
o
n
Ca
p
a
c
i
t
a
nc
e
-
C (
p
F
)
Reverse Voltage - V (V)
T = 25C
J
0.001
0.01
0.1
1
0.00001
0.0001
0.001
0.01
0.1
1
10
100
th
J
C
t , Rectangular Pulse Duration (Seconds)
Single Pulse
(Thermal Resistance)
1
T
h
e
r
m
a
l
I
m
p
e
d
a
n
c
e
Z
(
C
/
W
)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
J
DM
thJC
C
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
2
t
1
t
P
DM
1
2
120NQ...(R) Series
Bulletin PD-2.224 rev. D 07/04
4
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
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
1000
10000
100000
10
100
1000
10000
FS
M
N
o
n
-
R
e
p
e
t
i
t
i
v
e
S
u
r
g
e
C
u
r
r
e
n
t
-
I
(
A
)
p
Square Wave Pulse Duration - t (microsec)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
80
90
100
110
120
130
140
150
160
0
20 40 60 80 100 120 140 160 180
DC
A
l
l
o
wa
b
l
e
C
a
s
e
T
e
m
p
er
a
t
u
r
e -
(
C
)
F(AV)
Average Forward Current - I (A)
see note (2)
Square wave (D = 0.50)
80% Rated V applied
R
0
10
20
30
40
50
60
70
80
90
100
0
20 40 60 80 100 120 140 160 180
DC
A
v
er
a
ge P
o
w
e
r
L
o
s
s
-
(
W
a
t
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)
(2) 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
120NQ...(R) Series
Bulletin PD-2.224 rev. D 07/04
5
www.irf.com
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. 07/04
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.
Outline D-67 HALF PAK Module
Dimensions in millimeters and (inches)
Outline Table
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