PD-20541 rev. E 10/99
87CNQ020
87CNQ020SM
87CNQ020SL
SCHOTTKY RECTIFIER
80 Amp
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 40 Apk, T
J
= 125 °C
(per leg)
range
- 55 to 150
°C
Description/Features
Units
A
V
A
V
The center tap Schottky rectifier module has been optimized
for ultra low forward voltage drop specifically for 3.3V output
power supplies. The proprietary barrier technology allows for
reliable operation up to 150 °C junction temperature. Typical
applications are in parallel switching power supplies,
converters, reverse battery protection, and redundant power
subsystems.
150 °C T
J
operation
Center tap module
Optimized for 3.3V application
Ultra low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Low profile, small footprint, high current package
Values
80
20
6000
0.32
Case Styles
87CNQ020
87CNQ020SM
87CNQ020SL
D61-8
D61-8-SM
D61-8-SL
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87CNQ020, 87CNQ020SM, 87CNQ020SL
PD-20541 rev. E 10/99
Voltage Ratings
Part number
V
R
V
R
Max. DC Reverse Voltage (V)
Max. DC Reverse Voltage (V)
@ 125° C
@ 150° C
87CNQ020 / ..020SM / ..020SL
20
10
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward (Per Device)
Current
(PerLeg)
I
FSM
Max. Peak One Cycle Non-Repetitive
E
AS
I
AR
Surge Current (Per Leg)
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
87CNQ Units
80
40
6000
1100
36
8
A
A
mJ
A
Conditions
50% duty cycle @ T
C
= 135°C, rectangular wave form
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated Vrrm applied
T
J
= 25 °C, I
AS
= 8 Amps, L = 1.12 mH
5µs Sine or 3µs Rect. pulse
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg)
(1)
87CNQ Units
0.45
0.51
0.32
0.39
0.29
0.37
V
V
V
V
V
V
mA
mA
mA
mA
mA
V
mΩ
pF
nH
V/ µs
@ 40A
@ 80A
@ 40A
@ 80A
@ 40A
@ 80A
Conditions
T
J
= 25 °C
T
J
= 125 °C
T
J
= 150 °C
V
R
= rated V
R
V
R
= 5V
V
R
= 3.3V
V
R
= 10V
I
RM
Max. Reverse Leakage Current
(Per Leg)
(1)
5.5
550
90
70
480
T
J
= 25 °C
T
J
= 125 °C
T
J
= 125 °C
T
J
= 125 °C
T
J
= 150 °C
T
J
= T
J
max.
V
F(TO)
Threshold Voltage
r
t
Forward Slope Resistance
C
T
L
S
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
0.191
2.3
6500
5.5
10,000
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
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
(1) Pulse Width < 300µs, Duty Cycle <2%
87CNQ Units
-55 to 150
-55 to 150
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
°C/W Mounting surface , smooth and greased
g (oz.)
Kg-cm
(Ibf-in)
2
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87CNQ020, 87CNQ020SM, 87CNQ020SL
PD-20541 rev. E 10/99
1000
10000
1000
100
10
1
0. 1
0.01
T
J
= 150°C
T
J
= 125°C
T
J
= 25°C
(mA)
T
J
= 150°C
125°C
100°C
75°C
50°C
25°C
(A)
Instantan eous Forwa rd Current - I
F
100
Reverse Current - I
R
0
5
10
15
20
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
10000
Junction Capacitance - C
T
(pF)
T
J
= 25°C
10
1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1000
0
5
10
15
20
25
Forward Voltage Drop - V
FM
(V)
Reverse Voltage - V
R
(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(PerLeg)
1
Thermal Impedanc e Z
thJC
(°C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
0.1
D
D
D
D
D
= 0.75
= 0.50
= 0.33
= 0.25
= 0.20
P
0.01
Single Pulse
(Thermal Resistance)
Notes:
DM
t
1
t2
1. Duty fac tor D = t 1/ t 2
2. Peak T
J
= P
DM
x Z
t hJC
+ T
C
0.001
0.00001
0.0001
0.001
0.01
0.1
1
10
100
t
1
, Rectangular Pulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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87CNQ020, 87CNQ020SM, 87CNQ020SL
PD-20541 rev. E 10/99
150
Allowable Case Temperature - (°C)
Average Power Loss - (Watts)
145
140
135
130
125
see note (2)
25
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
20
15
10
5
0
DC
Square wave (D = 0.50)
80% Rated V
R
applied
RMS Limit
120
0
10
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)
10 0 0 0
Non-Repetitive Surge Current - I
FSM
(A)
Fig. 6 - Forward Power Loss Characteristics
(PerLeg)
10 0 0
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following Surge
1 00
10
1 00
1 00 0
10 0 00
Square Wave Pulse Duration - t p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
HIGH-SPE ED
SWITCH
FREE-WHEEL
DIODE
40HFL40S02
+
V d = 25 V olt
DUT
IRFP460
Rg = 25 ohm
C URRE NT
MON ITOR
Fig. 8 - Unclamped Inductive Test Circuit
(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
4
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87CNQ020, 87CNQ020SM, 87CNQ020SL
PD-20541 rev. E 10/99
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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