SCHOTTKY RECTIFIER 240 Amp
240NQ... SERIES
PD-2.230 rev. B 12/97
1www.irf.com
Dimensions in millimeters and inches
Outline HALF PAK Module
CASE STYLE AND DIMENSIONS
Major Ratings and Characteristics
IF(AV) Rectangular 240 A
waveform
VRRM range 35 to 45 V
IFSM @ tp = 5 µs sine 26,000 A
VF@ 240Apk, TJ=125°C 0.55 V
TJrange - 55 to 150 °C
Characteristics 240NQ... Units The 240NQ high current Schottky rectifier module series has
been optimized for very low forward voltage drop, with moder-
ate leakage. The proprietary barrier technology allows for
reliable operation up to 150° C junction temperature. Typical
applications are in switching power supplies, converters, free-
wheeling diodes, and reverse battery protection.
150° 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
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Description/Features
240NQ... Series
PD-2.230 rev. B 12/97
2www.irf.com
TJMax. Junction Temperature Range -55 to 150 °C
Tstg Max. Storage Temperature Range -55 to 150 °C
RthJC Max. Thermal Resistance Junction 0.20 °C/W DC operation * See Fig. 4
to Case
RthCS 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 240NQ Units Conditions
Kg-cm
(Ibf-in)
VFM Max. Forward Voltage Drop (1) 0.61 V @ 240A
* See Fig. 1 0.81 V @ 480A
0.55 V @ 240A
0.74 V @ 480A
IRM Max. Reverse Leakage Current (1) 20 mA TJ = 25 °C
* See Fig. 2 8 00 m A TJ = 125 °C
CTMax. Junction Capacitance 10,300 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C
LSTypical Series Inductance 5. 0 n H From top of terminal hole to mounting plane
dv/dt Max. Voltage Rate of Change 10,000 V/ µ s
(Rated VR)
TJ = 25 °C
TJ = 125 °C
VR = rated VR
Parameters 240NQ Units Conditions
(1) Pulse Width < 300µs, Duty Cycle < 2%
Electrical Specifications
IF(AV) Max. Average Forward Current 240 A 50% duty cycle @ TC = 96° C, rectangular wave form
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive 26,000 5µs Sine or 3µs Rect. pulse
Surge Current * See Fig. 7 3400 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 324 mJ TJ = 25 °C, IAS
= 48 Amps, L = 0.28 mH
IAR Repetitive Avalanche Current 48 A Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Parameters 240NQ Units Conditions
Absolute Maximum Ratings
AFollowing any rated
load condition and
with rated VRRM applied
Part number 240NQ035 240NQ040 240NQ045
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V) 35 40 45
Voltage Ratings
240NQ... Series
PD-2.230 rev. B 12/97
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 ZthJC
Characteristics
.01
.1
1
10
100
1000
10000
0 5 10 15 20 25 30 35 40 4
5
R
R
125°C
100°C
75°C
50°C
25°C
Reverse Voltage - V (V)
Reverse C urrent - I (m A)
T = 150°C
J
1000
10000
0102030405
0
T = 25°C
J
R ev erse V o ltag e - V (V )
R
T
Junction C apacitance - C (pF)
.001
.01
.1
1
.00001 .0001 .001 .01 .1 1 10 10
0
D = 0.33
D = 0.50
D = 0.25
D = 0.17
D = 0.08
1
thJC
t , R e ctangular P ulse D uration (Seconds)
Thermal Im pedan ce - Z (°C/W)
Si n g le Pu ls e
(Thermal Resistance)
2
t
1
t
P
DM
Notes:
1 . D uty fa cto r D = t / t
2. Pe a k T = P x Z + T
1
JDMthJCC
2
Fig. 1 - Maximum Forward Voltage Drop Characteristics
1
10
100
1000
0.1.2.3.4.5.6.7.8.
9
FM
F
Instantaneo us Forw ard C urrent - I (A)
Forw ard Voltag e Dro p - V (V )
T = 150°C
T = 125°C
T = 25°C
J
J
J
240NQ... Series
PD-2.230 rev. B 12/97
4www.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
40
80
120
160
200
240
0 50 100 150 200 250 300 35
0
DC
Average Power Loss - (W atts)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Limit
Av era g e F o r wa r d Curr e nt - I (A)
90
100
110
120
130
140
150
160
0 50 100 150 200 250 300 35
0
DC
Allowable Case Temp erature - ( °C)
A verage Forw ard Current - I (A)
F(AV)
240NQ
R ( DC) = 0.20°C/W
thJC
1000
10000
100000
10 100 1000 10000
FSM
p
N on-Repet i tive Surge Current - I ( A)
A t Any Rated Load Condi ti on
And With Rated V Applie d
Follo w ing Su rge
RRM
S quare W ave P ul se D urati on - t (m i crosec)
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm Vd = 25 Volt
+
