Page 1
PD-2.230 rev. B 12/97
240NQ... SERIES
SCHOTTKY RECTIFIER 240 Amp
Major Ratings and Characteristics
Characteristics 240NQ... Units
I
Rectangular 240 A
F(AV)
waveform
V
range 35 to 45 V
RRM
I
@ tp = 5 µs sine 26,000 A
FSM
VF@ 240Apk, TJ=125°C 0.55 V
TJrange - 55 to 150 °C
CASE STYLE AND DIMENSIONS
Description/Features
The 240NQ 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, converters, freewheeling diodes, and reverse battery protection.
150° C T
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
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
operation
J
Outline HALF PAK Module
Dimensions in millimeters and inches
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Page 2
240NQ... Series
PD-2.230 rev. B 12/97
Voltage Ratings
Part number 240NQ035 240NQ040 240NQ045
VRMax. DC Reverse Voltage (V)
V
Max. Working Peak Reverse Voltage (V)
RWM
35 40 45
Absolute Maximum Ratings
Parameters 240NQ Units Conditions
I
Max. Average Forward Current 240 A 50% duty cycle @ TC = 96° C, rectangular wave form
F(AV)
* See Fig. 5
Max. Peak One Cycle Non-Repetitive 26,000 5µs Sine or 3µs Rect. pulse
I
FSM
Surge Current * See Fig. 7 3400 10ms Sine or 6ms Rect. pulse
EASNon-Repetitive Avalanche Energy 324 mJ TJ = 25 °C, I
I
Repetitive Avalanche Current 48 A Current decaying linearly to zero in 1 µsec
AR
A
Frequency limited by T
= 48 Amps, L = 0.28 mH
AS
J
Following any rated
load condition and
with rated V
max. VA = 1.5 x VR typical
Electrical Specifications
Parameters 240NQ Units Conditions
VFMMax. Forward Voltage Drop (1) 0.61 V @ 240A
* See Fig. 1 0.81 V @ 480A
0.55 V @ 240A
0.74 V @ 480A
IRMMax. Reverse Leakage Current (1) 20 mA TJ = 25 °C
* See Fig. 2 800 mA T
C
Max. Junction Capacitance 10,300 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C
T
Typical Series Inductance 5.0 nH From top of terminal hole to mounting plane
L
S
= 125 °C
J
dv/dt Max. Voltage Rate of Change 10,000 V/ µs
(Rated V
)
R
TJ = 25 °C
T
= 125 °C
J
V
= rated V
R
(1) Pulse Width < 300µs, Duty Cycle < 2%
R
Thermal-Mechanical Specifications
RRM
applied
Parameters 240NQ Units Conditions
TJMax. Junction Temperature Range -55 to 150 °C
Max. Storage Temperature Range -55 to 150 °C
T
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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Page 3
240NQ... Series
5
0
0
9
PD-2.230 rev. B 12/97
1000
100
F
T = 150°C
J
T = 125°C
J
T = 25°C
J
10
Instantaneous Forw ard Curre nt - I (A )
10000
T = 150°C
1000
R
Reverse Current - I (mA)
J
125°C
100
10
1
.1
.01
100°C
75°C
50°C
25°C
0 5 10 15 20 25 30 35 40 4
Reverse Voltage - V (V)
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
10000
T
T = 25°C
J
R
1
0.1.2.3.4.5.6.7.8.
Fo rward V oltage Drop - V (V )
Fig. 1 - Maximum Forward Voltage Drop Characteristics
1
D = 0.50
.1
thJC
Thermal Impedan ce - Z (°C/W)
D = 0.33
D = 0.25
D = 0.17
D = 0.08
.01
Sin g le Puls e
(Th erm al Resistance)
.001
.00001 .000 1 .001 .01 .1 1 10 10
Fig. 4 - Maximum Thermal Impedance Z
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Junction Capacitance - C (pF)
1000
0102030405
FM
P
DM
Notes:
1. Duty facto r D = t / t
2 . Pea k T = P x Z + T
t , Re ctangular Pulse Duration (Secon ds)
1
Characteristics
thJC
Re v erse V o ltage - V (V)
R
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
t
1
t
2
1
2
JDMthJCC
3
Page 4
240NQ... Series
0
0
PD-2.230 rev. B 12/97
160
150
140
130
120
110
100
Allowable Case Tempe ratu re - (°C )
90
0 50 100 150 200 250 300 35
Av erage Forw ard C urrent - I (A)
240NQ
R (DC) = 0. 20°C/W
thJC
DC
F(AV)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
100000
FSM
10000
Average P owe r Loss - (W atts)
At Any Rated Load Conditi on
And With Rated V App lied
Follow ing Surge
RRM
240
D = 0.08
D = 0.17
200
D = 0.25
D = 0.33
D = 0.50
160
RMS Limit
120
80
40
0
0 50 100 150 200 250 300 35
A v era g e For war d Cu rr e n t - I ( A )
DC
F(AV)
Fig. 6 - Forward Power Loss Characteristics
Non-R epetitive Sur ge Current - I (A)
1000
10 100 1000 10000
Squar e Wave P ul se Duration - t (microsec)
p
Fig. 7 - Maximum Non-Repetitive Surge Current
L
HIGH-SPEED
SWITCH
FREE-WHEEL
DIODE
40HFL40S02
Vd = 25 Volt
+
CURRENT
MONITOR
DUT
IRFP46 0
Rg = 25 ohm
Fig. 8 - Unclamped Inductive Test Circuit
4
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