The 409CNQ center tap 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
high current switching power supplies, plating power supplies,
UPS systems, converters, free-wheeling diodes, welding, and
reverse battery protection.
175 °C TJ operation
Center tap module
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
Description/Features
Major Ratings and Characteristics
IF(AV) Rectangular 400 A
waveform
VRRM range 135 to 150 V
IFSM @ tp = 5 µs sine 20000 A
VF@
200Apk, TJ=125°C 0.72 V
(per leg)
TJrange - 55 to 175 °C
Characteristics 409CNQ... Units
SCHOTTKY RECTIFIER
409CNQ... SERIES
400 Amp
1
Bulletin PD-20723 rev. B 07/01
TO-244AB
BASE
ANODE 2
63.50 [2.500]
60.96 [2.400]
23.55 [.927]
20.42 [.804] 14.99 [.590]
15.75 [.620]
20.32 [.800]
17.78 [.700]
39.75 [1.565]
40.26 [1.585]
80.01 [3.150]
34.925 [1.375]
3.35 [.132]
3.02 [.119]
90.17 [3.550]
92.71 [3.650]
7.49 [.295]
6.99 [.275]
2X Ø
10.41 [.410]
9.65 [.380]
Ø
4.70 [.185]
4.95 [.195]
1/4-20 SLOTTED HEX
COMMON
CATHODE
REF.
TERMINAL
LUG
COMMON CATHODE
ANODE 1
TERMINAL
LUG
Ø
NOTES:
1. DIMENSIONS ARE SHOWN IN MILLIMETERS [INCHES].
2. CONTROLLING DIMENSION: MILLIMETER
Modified JEDEC
Outline TO-244AB
Dimensions in millimeters and (inches)
www.irf.com
409CNQ... Series
2
Bulletin PD-20723 rev. B 07/01
www.irf.com
Part number 409CNQ135 409CNQ150
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V) 135 150
Voltage Ratings
Absolute Maximum Ratings
Following any rated
load condition and with
rated VRRM
applied
Parameters 409CNQ Units Conditions
A
IF(AV) Max. Average Forward Current (Per leg) 200 A 50% duty cycle @ TC = 125 °C, rectangular wave form
* See Fig. 5 (Per device ) 400
IFSM Max. Peak One Cycle Non-Repetitive 20000 5µs Sine or 3µs Rect. pulse
Surge Current (Per Leg) * See Fig. 7 2300 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 15 mJ TJ = 25 °C, IAS
= 1 Amps, L = 30 mH
(Per Leg)
IAR Repetitive Avalanche Current 1 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
(1) Pulse Width < 300µs, Duty Cycle <2%
TJMax. Junction Temperature Range - 55 to 175 °C
Tstg Max. Storage Temperature Range - 55 to 175 °C
RthJC Max. Thermal Resistance Junction 0.20 °C/W DC operation * See Fig. 4
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction 0.10 °C/W DC operation
to Case (Per Package)
RthCS Typical Thermal Resistance, Case 0.10 °C/W Mounting surface , smooth and greased
to Heatsink
wt Approximate Weight 79 (2.80) g (oz.)
T Mounting Torque Base Min. 24 (20)
Max. 35 (30)
Mounting Torque Center Hole Typ. 13.5 (12)
Terminal Torque Min. 35 (30)
Max. 46 (40)
Case Style TO - 244AB Modified JEDEC
Thermal-Mechanical Specifications
Parameters 409CNQ Units Conditions
VFM Max. Forward Voltage Drop 1.03 V @ 200A
(Per Leg) * See Fig. 1 (1) 1.21 V @ 400A
0.72 V @ 200A
0.83 V @ 400A
IRM Max. Reverse Leakage Current 6 mA TJ = 25 °C
(Per Leg) * See Fig. 2 (1) 85 mA TJ = 125 °C
CTMax. Junction Capacitance (Per Leg) 6000 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance (Per Leg) 5.0 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 409CNQ Units Conditions
Kg-cm
(Ibf-in)
Electrical Specifications
409CNQ... Series
3
Bulletin PD-20723 rev. A 07/01
www.irf.com
Fig. 1 - Max. Forward Voltage Drop Characteristics
Fig. 4 - Max. Thermal Impedance Z thJC Characteristics
Forward Voltage Drop - VFM (V)
Instantaneous Forward Current - I F (A)
Reverse Current - I R (mA)
Reverse Voltage - V R (V)
Reverse Voltage - V R (V)
Junction Capacitance - C T (pF)
t1, Rectangular Pulse Duration (Seconds)
Thermal Impedance Z thJC (°C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
10
100
1000
0 0.4 0.8 1.2 1.6 2
T = 175˚C
T = 125˚C
T = 25˚C
J
J
J
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 306090120
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
409CNQ... Series
4
Bulletin PD-20723 rev. B 07/01
www.irf.com
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
FREE-WHEEL
DIOD E
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
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)
Non-Repetitive Surge Current - I FSM (A)
Fig. 6 - Forward Power Loss Characteristics
Average Forward Current - I F (AV) (A)
Average Power Loss (Watts)
Fig. 8 - Unclamped Inductive Test Circuit
(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
0
40
80
120
160
200
0 50 100 150 200 250 300
DC
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
1000
10000
100000
10 100 1000 10000
At Any Rated Load Condition
And With Rated V Applied
Following Surge RRM
60
80
100
120
140
160
180
0 50 100 150 200 250 300
DC
see note (2)
Square wave (D = 0.50)
Rated V applied
R
409CNQ... Series
5
Bulletin PD-20723 rev. A 07/01
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. 07/01
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.
