Major Ratings and Characteristics Description/Features
The 129NQ... (R) 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 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 135 to 150 V
IFSM @ tp = 5 µs sine 10000 A
VF@
120Apk, TJ=125°C 0.74 V
TJrange - 55 to 175 °C
Characteristics 129NQ...(R) Units
SCHOTTKY RECTIFIER 120 Amp
129NQ...(R) SERIES
1
www.irf.com
Bulletin PD-20719 rev. A 03/01
D-67
Outline D-67 HALF PAK Module
Dimensions in millimeters and (inches)
129NQ150
Lug Terminal Anode
Base Cathode
129NQ150R
Lug Terminal Cathode
Base Anode
129NQ...(R) Series
Bulletin PD-20719 rev. A 03/01
2
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 129NQ Units Conditions
Kg-cm
(Ibf-in)
VFM Max. Forward Voltage Drop (1) 1.07 V @ 120A
* See Fig. 1 1.27 V @ 240A
0.74 V @ 120A
0.86 V @ 240A
IRM Max. Reverse Leakage Current (1) 3 mA TJ = 25 °C
* See Fig. 2 45 mA TJ = 125 °C
CTMax. Junction Capacitance 3000 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 129NQ Units Conditions
Electrical Specifications
IF(AV) Max. Average Forward Current 120 A 50% duty cycle @ TC = 117° C, rectangular wave form
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive 10000 5µs Sine or 3µs Rect. pulse
Surge Current * See Fig. 7 1200 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 15 mJ TJ
= 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 129NQ Units Conditions
Absolute Maximum Ratings
A
Part number 129NQ135 129NQ150
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
135 150
Following any rated
load condition and
with rated VRRMapplied
(1) Pulse Width < 300µs, Duty Cycle < 2%
129NQ...(R) Series
Bulletin PD-20719 rev. A 03/01
3
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
Fig. 1 - Max. Forward Voltage Drop Characteristics
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics
Forward Voltage Drop - VFM (V)
Instantaneous Forward Current - I F (A)
Reverse Current - I R
(mA)
Reverse Voltage - V R (V)
Reverse Voltage - VR (V)
Junction Capacitance - C T (pF)
t1, Rectangular Pulse Duration (Seconds)
Thermal Impedance Z thJC (°C/W)
0
.001
0.01
0.1
1
10
100
1000
0 30 60 90 120 150
150˚C
125˚C
100˚C
75˚C
50˚C
25˚C
T = 175˚C
J
100
1000
10000
0 40 80 120 160
T = 25˚C
J
0
.001
0.01
0.1
1
0.00001 0.0001 0.001 0.01 0.1 1 10 100
Single Pulse
(Thermal Resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
2
t
1
t
P
DM
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
J
DM
thJC C
2
1
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
10
100
1000
0 0.5 1 1.5 2 2.5
T = 175˚C
T = 125˚C
T = 25˚C
J
J
J
129NQ...(R) Series
Bulletin PD-20719 rev. A 03/01
4
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
Fig. 8 - Unclamped Inductive Test Circuit
Fig. 6 - Forward Power Loss Characteristics
FREE-WHEEL
D IO DE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SW ITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
(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 = rated VR
Average Forward Current - IF(AV)
(A) Average Forward Current - I F(AV)
(A)
Square Wave Pulse Duration - t p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
Allowable Case Temperature (°C)
Average Power Loss (Watts)
Non-Repetitive Surge Current - I FSM (A)
100
1000
10000
10 100 1000 10000
At Any Rated Load Condition
And With Rated V Applied
Following Surge RRM
0
20
40
60
80
100
120
140
0 20 40 60 80 100 120 140 160 180
DCRMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
60
80
100
120
140
160
180
0 40 80 120 160 200
DC
see note (2)
Square wave (D = 0.50)
Rated V applied
R
