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Bulletin PD-2.261 rev. B 05/02
241NQ...(R) SERIES
SCHOTTKY RECTIFIER
Major Ratings and Characteristics
Characteristics 241NQ... Units
I
Rectangular 240 A
F(AV)
waveform
V
range 35 to 50 V
RRM
I
@ tp = 5 µs sine 25,000 A
FSM
VF@ 240Apk, TJ=125°C 0.59 V
TJrange - 55 to 175 °C
240 Amp
D-67
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 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
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
241NQ050
Lug Terminal Anode
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Base Cathode
241NQ050R
Lug Terminal Cathode
Base Anode
Outline D-67 HALF PAK Module
Dimensions in millimeters and (inches)
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241NQ...(R) Series
Bulletin PD-2.261 rev. B 05/02
Voltage Ratings
Part number 241NQ035 241NQ040 241NQ045 241NQ050
VRMax. DC Reverse Voltage (V)
V
Max. Working Peak Reverse Voltage (V)
RWM
35 40 45 50
Absolute Maximum Ratings
Parameters 241NQ Units Conditions
I
Max. Average Forward Current 240 A 50% duty cycle @ TC = 130° C, rectangular wave form
F(AV)
* See Fig. 5
I
Max. Peak One Cycle Non-Repetitive 25,000 5µs Sine or 3µs Rect. pulse
FSM
Surge Current * See Fig. 7 3450 10ms Sine or 6ms Rect. pulse
EASNon-Repetitive Avalanche Energy 324 m J TJ = 25 °C, I
A
= 48 Amps, L = 0.28 mH
AS
IARRepetitive Avalanche Current 48 A Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
Following any rated
load condition and
with rated V
RRM
max. VA = 1.5 x VR typical
Electrical Specifications
Parameters 241NQ Units Conditions
VFMMax. Forward Voltage Drop (1) 0.69 V @ 240A
* See Fig. 1 0.82 V @ 480A
0.59 V @ 240A
0.72 V @ 480A
IRMMax. Reverse Leakage Current (1) 20 mA TJ = 25 °C
* See Fig. 2 180 mA TJ = 125 °C
CTMax. Junction Capacitance 10,300 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C
LSTypical Series Inductance 5.0 nH From top of terminal hole to mounting plane
dv/dt Max. Voltage Rate of Change 10000 V/ µs
(Rated VR)
TJ = 25 °C
TJ = 125 °C
VR = rated V
(1) Pulse Width < 300µs, Duty Cycle < 2%
R
Thermal-Mechanical Specifications
applied
Parameters 241NQ Units Conditions
TJMax. Junction Temperature Range -55 to 175 °C
T
Max. Storage Temperature Range -55 to 175 °C
stg
R
Max. Thermal Resistance Junction 0.20 °C/W DC operation * See Fig. 4
thJC
to Case
R
Typical Thermal Resistance, Case to 0.15 °C/W Mounting surface , smooth and greased
thCS
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)
Kg-cm
(Ibf-in)
Max. 86 (75)
Case Style HALF PAK Module
2
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5
1000
9
241NQ...(R) Series
Bulletin PD-2.261 rev. B 05/02
10000
1000
R
100
F
T = 175°C
J
T = 125°C
J
T = 25°C
J
10
Instantaneous Forward Current - I (A)
Rev er se Current - I (mA)
10000
T
Junct ion Capaci t ance - C (pF)
T = 175°C
J
100
10
1
.1
.01
.001
150°C
125°C
100°C
75°C
50°C
25°C
0 5 10 15 20 25 30 35 40 4
Reverse Vol tage - V ( V)
R
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
T = 25°C
J
1
0.1.2.3.4.5.6.7.8.
Forward Voltage Drop - V (V)
FM
Fig. 1 - Maximum Forward Voltage Drop Characteristics
1
D = 0.50
.1
thJC
Ther mal I mpedance - Z (°C/W)
D = 0.33
D = 0.25
D = 0.17
D = 0.08
.01
Singl e Pulse
.001
.00001 .0001 .001 .01 .1 1 10 100
(Thermal Resist ance)
t , Rectangul ar Pulse Durat ion ( Seconds)
1
Fig. 4 - Maximum Thermal Impedance Z
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1000
0 1020304050
Reverse Volt age - V (V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
P
DM
t
1
t
Not es:
1. Duty factor D = t / t
2. Peak T = P x Z + T
Characteristics
thJC
2
JDM
1
2
thJC C
R
3
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241NQ...(R) Series
Bulletin PD-2.261 rev. B 05/02
180
241NQ
170
160
150
140
130
Al l owabl e Ca se Te mperat ure - (°C)
120
0 50 100 150 2 00 250 300 3 50
Average Forward Current - I (A)
R (DC) = 0.20°C/W
thJC
DC
F(AV)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
100000
FSM
10000
Average Power Loss - (Watts)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
220
D = 0. 0 8
200
D = 0. 1 7
180
D = 0. 2 5
D = 0. 3 3
160
D = 0. 5 0
140
120
RMS Li mit
100
80
60
40
20
0
0 50 100 150 200 250 300 350
Average Forward Current - I (A)
DC
F(AV)
Fig. 6 - Forward Power Loss Characteristics
Non-Repetitive Surge Current - I (A)
1000
10 100 1000 10000
Square Wave Pulse Duration - t (microsec)
p
Fig. 7 - Maximum Non-Repetitive Surge Current
L
HIGH-SPEED
SW ITCH
FREE-WHEEL
DIOD E
40HFL40S02
Vd = 25 Volt
+
CURRENT
MONITOR
DUT
IRFP460
Rg = 25 ohm
Fig. 8 - Unclamped Inductive Test Circuit
4
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Page 5
241NQ...(R) Series
Bulletin PD-2.261 rev. B 05/02
This product has been designed and qualified for Industrial Level.
Data and specifications subject to change without notice.
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. 05/02
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