Major Ratings and Characteristics Description/ Features
IF(AV) Rectangular 120 A
waveform
VRRM range 35 to 45 V
IFSM @ tp = 5 µs sine 29,000 A
VF@ 120Apk, TJ=125°C 0.52 V
TJrange - 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 TJ 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
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Case Styles
120NQ...(R)
D-67
IF(AV) = 120 A
VR = 35 to 45V
120NQ...(R) Series
Bulletin PD-2.224 rev. D 07/04
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 0.40 °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. 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)
VFM Max. Forward Voltage Drop (1) 0.57 V @ 120A
* See Fig. 1 0.73 V @ 240A
0.52 V @ 120A
0.69 V @ 240A
IRM Max. Reverse Leakage Current (1) 10 mA TJ = 25 °C
* See Fig. 2 500 mA TJ = 125 °C
VF(TO) Threshold Voltage 0.32 V TJ = TJ max.
rtForward Slope Resistance 1.37 mΩ
CTMax. Junction Capacitance 5200 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C
LSTypical Series Inductance 7.0 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 VR
Parameters 120NQ Units Conditions
(1) Pulse Width < 300µs, Duty Cycle < 2%
Electrical Specifications
IF(AV) Max. Average Forward Current 120 A 50% duty cycle @ TC = 106° C, rectangular wave form
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive 29,000 5µs Sine or 3µs Rect. pulse
Surge Current * See Fig. 7 1550 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 81 mJ TJ = 25 °C, IAS
= 12 Amps, L = 1.12 mH
IAR Repetitive Avalanche Current 12 A Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Parameters 120NQ Units Conditions
Absolute Maximum Ratings
A
Following any rated
load condition and
with rated VRRM applied
Part number 120NQ035(R) 120NQ040(R) 120NQ045(R)
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V) 35 40 45
Voltage Ratings
120NQ...(R) Series
Bulletin PD-2.224 rev. D 07/04
3
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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
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
Instantaneous Forward Current - I (A)
T = 150°C
T = 125°C
T = 25°C
J
J
J
F
FM
Forward Volta ge Drop - V (V)
0.01
0.1
1
10
100
1000
10000
0 5 10 15 20 25 30 35 40 45
R
R
125°C
100°C
75°C
50°C
25°C
Reverse Current - I (mA)
T = 150°C
J
Reverse Voltage - V (V)
1000
10000
01020304050
R
T
Junction Capacitance - C (pF)
Reverse Voltage - V (V)
T = 25°C
J
0.001
0.01
0.1
1
0.00001 0.0001 0.001 0.01 0.1 1 10 100
thJC
t , Rec ta ngula r Pulse Duratio n (Sec ond s)
Sing le Pulse
(Thermal Resistance)
1
Thermal Impedanc e Z (°C/ W)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
J
DM
thJC C
Not es:
1. Duty factor D = t / t
2. Peak T = P x Z + T
2
t
1
t
P
DM
12
120NQ...(R) Series
Bulletin PD-2.224 rev. D 07/04
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
FREE- W HEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 2 5 o h m
Vd = 25 Volt
+
1000
10000
100000
10 100 1000 10000
FSM
Non-Repetitive Surge Current - I (A)
p
Square Wave Pulse Duration - t (microsec )
At Any Rated Load Condition
And With Rated V App lied
Following Surge
RRM
80
90
100
110
120
130
140
150
160
0 20406080100120140160180
DC
Allowable Case Temperature - (°C)
F( A V )
Average Forward Current - I (A)
se e no t e ( 2)
Sq ua re wa ve (D = 0.50)
80% Rated V applied
R
0
10
20
30
40
50
60
70
80
90
100
0 20406080100120140160180
DC
Average Power Loss - (Watts)
F( A V )
RM S Lim i t
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
Avera ge Forward Current - I (A)
(2) Formula used: TC = TJ - (Pd + PdREV) x RthJC
;
Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1
= 80% rated VR
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
