Major Ratings and Characteristics
I
F(AV)
Rectangular
160
A
waveform
V
RRM
range
35 to 45
V
I
FSM
@ tp = 5 s sine
11500
A
V
F
@
80 Apk, T
J
= 125C
0.63
V
(per leg)
T
J
range
- 55 to 175
C
Characteristics
161CNQ... Units
The 161CNQ non isolated, center tap Schottky rectifier module
series has been optimized for very low forward voltage drop, with
moderate leakage. The proprietary barrier technology allows for
reliable operation up to 175 C junction temperature. T y p i c a l
applications are in switching power supplies, converters, free-
wheeling diodes, and reverse battery protection.
175 C T
J
operation
Isolated heatsink
Center tap module
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Low profile, high current package
Description/Features
Outline TO-249AA
Dimensions in millimeters and (inches)
TO-249AA
SCHOTTKY RECTIFIER
160 Amp
161CNQ... SERIES
Bulletin PD-2.175 05/00
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1
(NON ISOLATED BASE)
161CNQ... Series
2
Bulletin PD-2.175 05/00
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V
R
Max. DC Reverse Voltage (V)
35
40
45
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
0.70
C/W DC operation
* See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
0.35
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)
Absolute Maximum Ratings
Following any rated
load condition and with
rated V
RRM
applied
Parameters
161CNQ Units Conditions
I
F(AV)
Max. Average Forward
(Per Leg)
80
A
50% duty cycle @ T
C
= 129 C, rectangular wave form
Current
* See Fig. 5
(Per Device)
160
I
FSM
Max. Peak One Cycle Non-Repetitive
11,500
A
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
Voltage Ratings
Parameters
161CNQ Units Conditions
Part number
161CNQ035
161CNQ040
161CNQ045
V
FM
Max. Forward Voltage Drop
0.71
V
@ 80A
T
J
= 25 C
(Per Leg) * See Fig. 1
(1)
0.88
V
@ 160A
0.63
V
@ 80A
T
J
= 125 C
0.79
V
@ 160A
I
RM
Max. Reverse Leakage Current
5
mA
T
J
= 25 C
V
R
= rated V
R
(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
10,000
V/ s
(Rated V
R
)
Electrical Specifications
(1) Pulse Width < 300s, Duty Cycle <2%
Parameters
161CNQ Units Conditions
161CNQ... Series
3
Bulletin PD-2.175 05/00
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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)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
Instantaneous Forward Current - I
F
(A)
Forward Voltage Drop - V
FM
(V)
Reverse Voltage - V
R
(V)
Reverse Current - I
R
(mA)
Junction Capacitance - C
T
(p F)
Reverse Voltage - V
R
(V)
t
1
, Rectangular Pulse Duration (Seconds)
Thermal Impedance Z
thJC
(C/W)
1
10
100
1000
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
T = 175C
T = 125C
T = 25C
J
J
J
0.001
0.01
0.1
1
10
100
1000
0
10
20
30
40
50
100C
75C
50C
25C
T = 175C
J
125C
150C
100
1000
10000
0
10
20
30
40
50
T = 25C
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
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
2
t
1
t
P
DM
161CNQ... Series
4
Bulletin PD-2.175 05/00
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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)
FR E E - W H E E L
D IO D E
40 HFL4 0 S02
C U R R E N T
M O N IT O R
H IG H - SP E E D
SW IT C H
IRFP4 60
L
D U T
Rg = 25 ohm
V d = 2 5 V o lt
+
(2) Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 80% rated V
R
Average Forward Current - I
F(AV)
(A)
Allowable Case Temperature (
C)
Average Forward Current - I
F(AV)
(A)
Average Power Loss (Watts)
Square Wave Pulse Duration - t
p
(microsec)
Non-Repetitive Surge Current - I
FSM
(A)
0
10
20
30
40
50
60
70
80
0
20
40
60
80
100
120
DC
RMS Limit
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
100
1000
10000
10
100
1000
10000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
100
120
140
160
180
0
20
40
60
80
100
120
DC
see note (2)
Square wave (D = 0.50)
80% Rated Vr applied
161CNQ... Series
5
Bulletin PD-2.175 05/00
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