IF(AV) Rectangular 160 A
waveform
VRRM range 30 to 50 V
IFSM @ tp = 5 µs sine 11,500 A
VF@
80 Apk, TJ
= 125°C 0.63 V
(per leg)
TJrange - 55 to 175 °C
Characteristics 161CMQ... Units
Major Ratings and Characteristics
SCHOTTKY RECTIFIER 160 Amp
161CMQ... SERIES
Bulletin PD-2.174 rev. C 05/02
The 161CMQ isolated 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 switching power supplies, converters, free-
wheeling diodes, and reverse battery protection.
175° C TJ operation
Isolated heatsink
Center tap module
Multiple leads per terminal for high frequency, high current
PC board mounting
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
Low profile, high current package
Description/ Features
www.irf.com 1
TO-249AA
Outline D-60 (Modified JEDEC TO-249AA)
Dimensions in millimeters and (inches)
161CMQ050
Anode
(Isolated Base)
Anode Common
Cathode
12
123
161CMQ... Series
2
Bulletin PD-2.174 rev. C 05/02
www.irf.com
Part number 161CMQ030 161CMQ035 161CMQ040 161CMQ045 161CMQ050
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
TJMax. Junction Temperature Range -55 to 175 °C
Tstg Max. Storage Temperature Range -55 to 175 °C
RthJC Max. Thermal Resistance Junction 1.0 °C/W DC operation * See Fig. 4
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction 0.50 °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 58 (2.0) g (oz.)
T Mounting Torque Min. 40 (35)
Max. 58 (50)
Case Style TO - 249AA JEDEC
Thermal-Mechanical Specifications
Kg-cm
(Ibf-in)
VFM Max. Forward Voltage Drop 0.71 V @ 80A
(Per Leg) * See Fig. 1 (1) 0.88 V @ 160A
0.63 V @ 80A
0.79 V @ 160A
IRM Max. Reverse Leakage Current 5 mA TJ = 25 °C
(Per Leg) * See Fig. 2 (1) 45 mA TJ = 125 °C
CTMax. Junction Capacitance (Per Leg) 2600 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance (Per Leg) 8.0 nH Measured from terminal hole to terminal hole
dv/dt Max. Voltage Rate of Change 10000 V/ µs
(Rated VR)
TJ = 25 °C
TJ = 125 °C
Electrical Specifications
(1) Pulse Width < 300µs, Duty Cycle <2%
VR = rated VR
Absolute Maximum Ratings
Following any rated
load condition and with
rated VRRM applied
Parameters 161CMQ Units Conditions
IF(AV) Max. Average Forward Current 160 A 50% duty cycle @ TC = 101 °C, rectangular wave form
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive 11,500 5µs Sine or 3µs Rect. pulse
Surge Current (Per Leg) * See Fig. 7 900 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 108 mJ TJ = 25 °C, IAS
= 16 Amps, L = 0.84 mH
(Per Leg)
IAR Repetitive Avalanche Current 16 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
A
Parameters 161CMQ Units Conditions
Parameters 161CMQ Units Conditions
Voltage Ratings
30 35 40 45 50
161CMQ... Series
3
Bulletin PD-2.174 rev. C 05/02
www.irf.com
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
.001
.01
.1
1
10
100
1000
0 5 10 15 20 25 30 35 40 4
5
R
R
T = 175°C
150°C
125°C
100°C
75°C
50°C
25°C
J
Reverse Vol tage - V (V)
Reverse Current - I (mA)
100
1000
10000
0 1020304050
T = 25°C
J
Reverse Vol tage - V (V)
R
T
Junction Capacitance - C (pF)
.001
.01
.1
1
10
.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 , Rectangul ar Pulse Duration (Seconds)
Thermal Impedance - Z (°C/W)
Single Pulse
(Thermal Resi stance)
2
t
1
t
P
DM
Not es:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1
JDMthJC C
2
1
10
100
1000
0.2.4.6.811.21.41.6
FM
F
Instantaneous Forward Current - I (A)
T = 175°C
T = 125°C
T = 25°C
J
J
J
Forward Vol tage Drop - V (V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
161CMQ... Series
4
Bulletin PD-2.174 rev. C 05/02
www.irf.com
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 8 - Unclamped Inductive Test Circuit
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
0
10
20
30
40
50
60
70
80
0 20 40 60 80 100 120
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)
80
100
120
140
160
180
0 20 40 60 80 100 120
DC
Al l owabl e Case Temperature - (°C)
Average Forward Current - I (A)
F(AV)
161CMQ
R (DC) = 1. 0°C/ W
thJC
100
1000
10000
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
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SW ITC H
IRFP460
L
DUT
Rg = 25 ohm Vd = 25 Volt
+
161CMQ... Series
5
Bulletin PD-2.174 rev. C 05/02
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. 05/02
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.
