I
F(AV)
Rectangular
160
A
waveform
V
RRM
range
30 to 50
V
I
FSM
@ tp = 5 s sine
11,500
A
V
F
@
80 Apk, T
J
= 125C
0.63
V
(per leg)
T
J
range
- 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 T
J
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
1
2
1
2
3
161CMQ... Series
2
Bulletin PD-2.174 rev. C 05/02
www.irf.com
Part number
161CMQ030 161CMQ035 161CMQ040 161CMQ045 161CMQ050
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
T
J
Max. Junction Temperature Range
-55 to 175
C
T
stg
Max. Storage Temperature Range
-55 to 175
C
R
thJC
Max. Thermal Resistance Junction
1.0
C/W DC operation
* See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
0.50
C/W DC operation
to Case (Per Package)
R
thCS
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)
V
FM
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
I
RM
Max. Reverse Leakage Current
5
mA
T
J
= 25 C
(Per Leg) * See Fig. 2
(1)
45
mA
T
J
= 125 C
C
T
Max. Junction Capacitance (Per Leg)
2600
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25C
L
S
Typical Series Inductance (Per Leg)
8.0
nH
Measured from terminal hole to terminal hole
dv/dt Max. Voltage Rate of Change
10000
V/ s
(Rated V
R
)
T
J
= 25 C
T
J
= 125 C
Electrical Specifications
(1) Pulse Width < 300s, Duty Cycle <2%
V
R
= rated V
R
Absolute Maximum Ratings
Following any rated
load condition and with
rated V
RRM
applied
Parameters
161CMQ Units
Conditions
I
F(AV)
Max. Average Forward Current
160
A
50% duty cycle @ T
C
= 101 C, rectangular wave form
* See Fig. 5
I
FSM
Max. Peak One Cycle Non-Repetitive
11,500
5s Sine or 3s Rect. pulse
Surge Current (Per Leg) * See Fig. 7
900
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
108
mJ
T
J
= 25 C, I
AS
= 16 Amps, L = 0.84 mH
(Per Leg)
I
AR
Repetitive Avalanche Current
16
A
Current decaying linearly to zero in 1 sec
(Per Leg)
Frequency limited by T
J
max. V
A
= 1.5 x V
R
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 Z
thJC
Characteristics (Per Leg)
.001
.01
.1
1
10
100
1000
0
5 10 15 20 25 30 35 40 45
R
R
T = 175C
150C
125C
100C
75C
50C
25C
J
Reverse Voltage - V (V)
R
ev
e
r
s
e
C
u
r
r
e
n
t
-
I (
m
A)
100
1000
10000
0
10
20
30
40
50
T = 25C
J
Reverse Voltage - V (V)
R
T
J
u
n
c
ti
o
n
C
a
p
ac
i
t
an
ce
-
C
(
p
F
)
.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
th
J
C
t , Rectangular Pulse Duration (Seconds)
Th
e
r
m
a
l
Im
p
e
d
a
n
c
e
-
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
J
DM thJC C
2
1
10
100
1000
0
.2
.4
.6
.8
1
1.2
1.4
1.6
FM
F
I
n
s
t
ant
aneous
F
o
r
w
ar
d C
u
r
r
ent
-
I
(
A
)
T = 175C
T = 125C
T = 25C
J
J
J
Forward Voltage 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
A
v
e
r
ag
e P
o
w
e
r
Lo
s
s
-
(
W
a
tts
)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Limit
Average Forward Current - I (A)
80
100
120
140
160
180
0
20
40
60
80
100
120
DC
Al
l
o
wa
b
l
e
Ca
s
e
T
e
m
p
e
r
a
t
u
re
- (
C
)
Average Forward Current - I (A)
F(AV)
161CMQ
R (DC) = 1.0C/W
thJC
100
1000
10000
10
100
1000
10000
FS
M
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)
FRE E-W H EEL
D IO D E
40H FL40S02
C UR RE N T
M O N ITO R
H IG H -SPE ED
SW IT C H
IRFP460
L
D UT
R g = 2 5 oh m
V d = 25 V olt
+
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.
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