SCHOTTKY RECTIFIER 120 Amp
123NQ... (R) SERIES
Bulletin PD-2.250 rev. B 03/01
1
www.irf.com
Major Ratings and Characteristics Description/Features
The 123NQ... (R) high current Schottky rectifier module series
has been optimized for low reverse leakage at high tempera-
ture. The proprietary barrier technology allows for reliable
operation up to 175° C junction temperature. Typical applica-
tions are in switching power supplies, converters, free-
wheeling diodes, and reverse battery protection.
175° 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
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
IF(AV) Rectangular 120 A
waveform
VRRM range 80 to 100 V
IFSM @ tp = 5 µs sine 16,000 A
VF@
120Apk, TJ=125°C 0.74 V
T
Jrange - 55 to 175 °C
Characteristics 123NQ...(R) Units
D-67
Outline D-67 HALF PAK Module
Dimensions in millimeters and (inches)
123NQ100
Lug Terminal Anode
Base Cathode
123NQ100R
Lug Terminal Cathode
Base Anode
123NQ... Series
Bulletin PD-2.250 rev. B 03/01
2www.irf.com
TJMax. Junction Temperature Range -55 to 175 °C
Tstg Max. Storage Temperature Range -55 to 175 °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. 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 123NQ Units Conditions
Kg-cm
(Ibf-in)
VFM Max. Forward Voltage Drop (1) 0.91 V @ 120A
* See Fig. 1 1.08 V @ 240A
0.74 V @ 120A
0.88 V @ 240A
IRM Max. Reverse Leakage Current (1) 3 mA TJ = 25 °C
* See Fig. 2 40 mA TJ = 125 °C
CTMax. Junction Capacitance 2650 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 10,000 V/ µs
(Rated VR)
TJ = 25 °C
TJ = 125 °C
VR = rated VR
Parameters 123NQ Units Conditions
Electrical Specifications
IF(AV) Max. Average Forward Current 120 A 50% duty cycle @ TC = 121° C, rectangular wave form
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive 16,000 5µs Sine or 3µs Rect. pulse
Surge Current * See Fig. 7 2100 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 15 mJ T J
= 25 °C, IAS
= 1 Amps, L = 30 mH
IAR Repetitive Avalanche Current 1 A Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Parameters 123NQ Units Conditions
Absolute Maximum Ratings
A
Part number 123NQ080 123NQ100
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
80 100
Following any rated
load condition and
with rated VRRM
applied
(1) Pulse Width < 300µs, Duty Cycle < 2%
123NQ... Series
Bulletin PD-2.250 rev. B 03/01
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
Fig. 1 - Maximum Forward Voltage Drop Characteristics
.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
thJC
t , Rectangular Pulse Duration (Seconds)
Thermal Impedance - 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
JDMthJC C
2
1
10
100
1000
0.2.4.6.811.21.
4
FM
F
Instantaneous Forward Current - I (A)
T = 175°C
T = 125°C
T = 25°C
J
J
J
For ward Voltage Drop - V (V)
.001
.01
.1
1
10
100
1000
0 20406080100
R
R
T = 175°C
150°C
125°C
100°C
75°C
50°C
25°C
J
Reverse Voltage - V (V)
Reverse Current - I (mA)
100
1000
10000
0 102030405060708090100110
T = 25°C
J
Reverse Voltage - V (V)
R
T
Junction Capacitance - C (pF)
123NQ... Series
Bulletin PD-2.250 rev. B 03/01
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
25
50
75
100
125
0 25507510012515017
5
DC
Average Power Loss - (Watts)
F(AV)
D = 0. 08
D = 0. 17
D = 0. 25
D = 0. 33
D = 0. 50
RMS Li mit
Average Forward Current - I (A)
120
130
140
150
160
170
180
0 25 50 75 100 125 150 17
5
DC
Al l owable Case Temperature - (°C)
Average Forward Current - I (A)
F( AV)
123NQ
R (DC) = 0.40°C/W
thJC
1000
10000
100000
10 100 1000 10000
FSM
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)
FREE-WHEEL
DIOD E
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SW ITCH
IRFP460
L
DUT
Rg = 25 ohm Vd = 25 Volt
+
