80 Amp
80CNQ...A SERIES
Bulletin PD-20038 rev. A 09/01
www.irf.com
1
I
F(AV)
Rectangular
80
A
waveform
V
RRM
range
35 to 45
V
I
FSM
@ tp = 5 s sine
5800
A
V
F
@
40 Apk, T
J
= 125C
0.47
V
(per leg)
T
J
range
- 55 to 150
C
Characteristics
80CNQ...A Units
Major Ratings and Characteristics
The 80CNQ...A 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 150 C junction temperature.
Typical applications are in switching power supplies, convert-
ers, free-wheeling diodes, and reverse battery protection.
150 C T
J
operation
Center tap module
Very low forward voltage drop
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
New fully transfer-mould
low profile, small
footprint, high current package
Description/Features
SCHOTTKY RECTIFIER
New GenIII D-61 Package
Case Styles
D61-8
80CNQ...A
80CNQ...ASM
80CNQ...ASL
D61-8-SM
D61-8-SL
80CNQ...A Series
Bulletin PD-20038 rev. A 09/01
www.irf.com
2
I
F(AV)
Max. Average Forward
(Per Leg)
40
A
50% duty cycle @ T
C
= 114 C, rectangular wave form
Current
* See Fig. 5
(Per Device)
80
I
FSM
Max. Peak One Cycle Non-Repetitive
5800
5s Sine or 3s Rect. pulse
Surge Current (Per Leg) * See Fig. 7
750
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
54
mJ
T
J
= 25 C, I
AS
= 8 Amps, L = 1.7 mH
(Per Leg)
I
AR
Repetitive Avalanche Current
8
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
T
J
Max. Junction Temperature Range
-55 to 150
C
T
stg
Max. Storage Temperature Range
-55 to 150
C
R
thJC
Max. Thermal Resistance Junction
0.85
C/W DC operation
* See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
0.42
C/W DC operation
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
0.30
C/W Mounting surface , smooth and greased
to Heatsink (D61-8 Only)
Device flatness < 5 mils
wt
Approximate Weight
7.8 (0.28) g (oz.)
T
Mounting Torque
Min.
40 (35)
(D61-8 Only)
Max.
58 (50)
Thermal-Mechanical Specifications
Kg -cm
(Ibf-in)
V
FM
Max. Forward Voltage Drop
0.52
V
@ 40A
(Per Leg) * See Fig. 1
(1)
0.66
V
@ 80A
0.47
V
@ 40A
0.61
V
@ 80A
I
RM
Max. Reverse Leakage Current
5
mA
T
J
= 25 C
(Per Leg) * See Fig. 2
(1)
250
mA
T
J
= 125 C
V
F(TO)
Threshold Voltage
0.26
V
T
J
= T
J
max.
r
t
Forward Slope Resistance
3.93
m
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)
5.5
nH
Measured lead to lead 5mm from package body
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
80CNQ Units
Conditions
A
Part number
80CNQ035A
80CNQ040A
80CNQ045A
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
Voltage Ratings
35
40
45
Parameters
80CNQ Units
Conditions
Parameters
80CNQ Units
Conditions
80CNQ...A Series
3
Bulletin PD-20038 rev. A 09/01
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)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
Instantaneous Forward Current - I
F
(A)
Forward Voltage Drop - V
FM
(V)
Reverse Current - I
R
(mA)
Reverse Voltage - V
R
(V)
Reverse Voltage - V
R
(V)
Junction Capacitance - C
T
(p F)
Thermal Impedance - Z
thJC
(C/W)
t
1
, Rectangular Pulse Duration (Seconds)
100
1000
10000
0
10
20
30
40
50
T = 25C
J
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 1 / t 2
2. Peak Tj = Pdm x ZthJC + Tc
0.01
0.1
1
10
100
1000
0
5
10 15 20 25 30 35 40 45
125C
100C
75C
50C
25C
Tj = 150C
1
10
100
1000
0
0.2
0.4
0.6
0.8
1
1.2
T = 150C
T = 125C
T = 25C
J
J
J
80CNQ...A Series
Bulletin PD-20038 rev. A 09/01
www.irf.com
4
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)
(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
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
Allowable Case Temperature (C)
Average Forward Current - I
F(AV)
(A)
Average Power Loss (Watts)
Average Forward Current - I
F(AV)
(A)
Non-Repetitive Surge Current - I
FSM
(A)
Square Wave Pulse Duration - t
p
(microsec)
80
00
20
40
60
0
10
20
30
40
50
60
DC
see note (2)
Square wave (D = 0.50)
80% Rated Vr applied
100
1000
10000
10
100
1000
10000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
0
5
10
15
20
25
30
0
10
20
30
40
50
60
DC
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
80CNQ...A Series
5
Bulletin PD-20038 rev. A 09/01
www.irf.com
Outline Table
Outline D61-8-SM
Dimensions are in millimeters and (inches)
Outline D61-8
Dimensions are in millimeters and (inches)
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