Major Ratings and Characteristics
I
F(AV)
Rectangular
240
A
waveform
V
RRM
range
35 to 50
V
I
FSM
@ tp = 5 s sine
25,000
A
V
F
@
240Apk, T
J
=125C
0.59
V
T
J
range
- 55 to 175
C
Characteristics
241NQ...
Units
Description/ Features
The 241NQ high current Schottky rectifier module series has
been optimized for low reverse leakage at high temperature.
The proprietary barrier technology allows for reliable opera-
tion up to 175 C junction temperature. Typical applications
are in switching power supplies, converters, free-wheeling
diodes, and reverse battery protection.
175 C T
J
operation
Unique high power, Half-Pak module
Replaces four 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
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
SCHOTTKY RECTIFIER
240 Amp
241NQ...(R) SERIES
Bulletin PD-2.261 rev. B 05/02
1
www.irf.com
D-67
Outline D-67 HALF PAK Module
Dimensions in millimeters and (inches)
241NQ050
Lug Terminal Anode
Base Cathode
241NQ050R
Lug Terminal Cathode
Base Anode
241NQ...(R) Series
Bulletin PD-2.261 rev. B 05/02
2
www.irf.com
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
0.20
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.
40 (35)
Non-lubricated threads
Max.
58 (50)
Terminal Torque
Min.
58 (50)
Max.
86 (75)
Case Style
HALF PAK Module
Thermal-Mechanical Specifications
Parameters
241NQ Units
Conditions
Kg-cm
(Ibf-in)
V
FM
Max. Forward Voltage Drop (1)
0.69
V
@ 240A
* See Fig. 1
0.82
V
@ 480A
0.59
V
@ 240A
0.72
V
@ 480A
I
RM
Max. Reverse Leakage Current (1)
20
mA
T
J
= 25 C
* See Fig. 2
180
mA
T
J
= 125 C
C
T
Max. Junction Capacitance
10,300
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25 C
L
S
Typical Series Inductance
5.0
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
241NQ Units
Conditions
Electrical Specifications
I
F(AV)
Max. Average Forward Current
240
A
50% duty cycle @ T
C
= 130 C, rectangular wave form
* See Fig. 5
I
FSM
Max. Peak One Cycle Non-Repetitive
25,000
5s Sine or 3s Rect. pulse
Surge Current * See Fig. 7
3450
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
324
mJ
T
J
= 25 C, I
AS
= 48 Amps, L = 0.28 mH
I
AR
Repetitive Avalanche Current
48
A
Current decaying linearly to zero in 1 sec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Parameters
241NQ Units
Conditions
Absolute Maximum Ratings
A
(1) Pulse Width < 300s, Duty Cycle < 2%
Following any rated
load condition and
with rated V
RRM
applied
Part number
241NQ035
241NQ040 241NQ045
241NQ050
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
Voltage Ratings
35
40
45
50
241NQ...(R) Series
Bulletin PD-2.261 rev. B 05/02
3
www.irf.com
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
.001
.01
.1
1
10
100
1000
10000
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)
Re
v
e
r
s
e
C
u
rre
n
t
-
I
(m
A)
1000
10000
0
10
20
30
40
50
T = 25C
J
Reverse Voltage - V (V)
R
T
J
u
nc
t
i
o
n
C
a
p
a
c
i
t
a
nc
e -
C
(
p
F
)
.001
.01
.1
1
.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
al
I
m
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
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
1
10
100
1000
0
.1
.2
.3
.4
.5
.6
.7
.8
.9
FM
F
In
s
t
a
n
ta
n
e
o
u
s
F
o
r
w
a
r
d
C
u
r
r
e
n
t -
I
(
A
)
T = 175C
T = 125C
T = 25C
J
J
J
Forward Voltage Drop - V (V)
241NQ...(R) Series
Bulletin PD-2.261 rev. B 05/02
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
0
20
40
60
80
100
120
140
160
180
200
220
0
50 100 150 200 250 300 350
DC
A
v
e
r
a
g
e
P
o
w
e
r L
o
s
s
- (W
a
tts
)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Limit
Average Forward Current - I (A)
120
130
140
150
160
170
180
0
50 100 150 200 250 300 350
DC
A
l
l
o
wa
b
l
e
Ca
s
e
T
e
m
per
a
t
u
r
e
-
(
C
)
Average Forward Current - I (A)
F(AV)
241NQ
R (DC) = 0.20C/W
thJC
1000
10000
100000
10
100
1000
10000
FS
M
p
Non-Repetitive Surge Current -
I (A)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
Square Wave Pulse Duration - t (microsec)
FRE E-W H EEL
D IO D E
40H FL40S02
C UR RE N T
M O N ITO R
H IG H -SPE ED
SW IT C H
IRFP460
L
D UT
R g = 2 5 oh m
V d = 25 V olt
+
241NQ...(R) Series
Bulletin PD-2.261 rev. B 05/02
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. 05/02
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.
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