PD-2.217 rev. C 01/99
84CNQ... SERIES
SCHOTTKY RECTIFIER
80 Amp
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 40 Apk, T
J
= 100°C
(per leg)
range
- 55 to 125
°C
Description/Features
Units
A
V
A
V
The 84CNQ center tap Schottky rectifier module series has
been optimized for extremely low forward voltage drop, with
higher leakage. The proprietary barrier technology allows for
reliable operation up to 125° C junction temperature. Typical
applications are in switching power supplies, converters, free-
wheeling diodes, and reverse battery protection.
125° C T
J
operation
Center tap module
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Extremely low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Low profile, small footprint, high current package
84CNQ...
80
35 to 45
8000
0.44
Case Styles
84CNQ...
84CNQ...SM
84CNQ...SL
D61-8
D61-8-SM
D61-8-SL
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1
84CNQ... Series
PD-2.217 rev. C
01/99
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
35
40
45
V
RWM
Max. Working Peak Reverse Voltage (V)
84CNQ035
84CNQ040
84CNQ045
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 5
I
FSM
E
AS
I
AR
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
8000
620
54
8
A
mJ
A
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
T
J
= 25 °C, I
AS
= 8 Amps, L = 1.7 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
84CNQ Units
80
A
Conditions
50% duty cycle @ T
C
= 91 °C, rectangular wave form
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
84CNQ Units
0.49
0.62
0.44
0.60
5
600
2600
5.5
10,000
V
V
V
V
mA
mA
pF
nH
V/ µs
@ 40A
@ 80A
@ 40A
@ 80A
Conditions
T
J
= 25 °C
T
J
= 100 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2
(1)
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
T
J
= 25 °C
T
J
= 125 °C
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25°C
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
84CNQ Units
-55 to 125
-55 to 125
0.85
0.42
0.30
7.8 (0.28)
Min.
Max.
40 (35)
58 (50)
°C
°C
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
to Heatsink
(D61-8 Only)
wt
T
Approximate Weight
Mounting Torque
(D61-8 Only)
°C/W DCoperation
°C/W DCoperation
* See Fig. 4
°C/W Mounting surface , smooth and greased
g (oz.)
Kg-cm
(Ibf-in)
2
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84CNQ... Series
PD-2.217 rev. C
01/99
1000
1000
T = 125°C
(mA)
100
J
100°C
10
75°C
50°C
25°C
0.1
Reverse Current - I
R
100
Instantaneous Forward Current - I
F
(A)
1
0.01
0
5
10
15
20
25
30
35
40
45
Reverse Voltage - V
R
(V)
10
T
J
= 125°C
T
J
= 100°C
T
J
= 25°C
(pF)
10000
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
T
Junction Capacitance - C
T = 25°C
J
1
1000
0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Forward Voltage Drop - V
FM
(V)
1
100
0
10
20
30
40
50
Reverse Voltage - V
R
(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(PerLeg)
1
Thermal Impedance Z
thJC
(°C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
0.1
D=
D=
D=
D=
D=
0.50
0.33
0.25
0.17
0.08
P
DM
t1
Notes:
Single Pulse
(Thermal Resistance)
0.01
0.00001
0.0001
0.001
0.01
0.1
t2
1. Duty factor D = t 1/ t 2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
1
10
100
t 1 , Rectangular Pulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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84CNQ... Series
PD-2.217 rev. C
01/99
130
Allowable Case Temperature - (°C)
Average Power Loss - (Watts)
30
125
120
115
110
105
100
95
0
10
R
thJ C
(DC) = 0.85 °C/W
25
20
15
10
5
0
D
D
D
D
D
= 0.08
= 0.17
= 0.25
= 0.33
= 0.50
RMS Limit
DC
DC
20
30
40
50
60
0
10
20
30
40
50
60
Average Forward Current - I
F(AV)
(A)
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
(A)
10000
Fig. 6 - Forward Power Loss Characteristics
(PerLeg)
Non-Repetitive Surge Current - I
FSM
1000
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following Surge
100
10
100
1000
10000
Square Wave Pulse Duration - t p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
HIGH-SPEED
SWITCH
FREE-WHEEL
DIODE
40HFL40S02
Vd = 25 Volt
DUT
IRFP460
Rg = 25 ohm
+
CURRENT
MONITOR
Fig. 8 - Unclamped Inductive Test Circuit
4
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84CNQ... Series
PD-2.217 rev. C
01/99
Outline Table
Outline D61-8
Dimensions are in millimeters and (inches)
Outline D61-8-SM
Dimensions are in millimeters and (inches)
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