81CNQ SERIES
Technical Data
Data Sheet N1060, Rev. B
81CNQ SERIES SCHOTTKY RECTIFIER
Features
175℃ 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
Low profile, high current package
This is a Pb − Free Device
All SMC parts are traceable to the wafer lot
Additional electrical and life testing can be performed
upon request
Applications
Switching power supply
Converters
Free-Wheeling diodes
Reverse battery protection
81CNQ…
81CNQ…SL
81CNQ…SM
PRM2
PRM2-SL
PRM2-SM
Maximum Ratings:
Characteristics
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Average Rectified Forward Current
Peak One Cycle Non-Repetitive Surge
Current(Per leg)
Non-Repetitive Avalanche Energy
(Peg leg)
Repetitive Avalanche Current(Peg leg)
Symbol
V
RRM
V
RWM
V
R
I
F (AV)
I
FSM
E
AS
I
AR
Condition
-
50% duty cycle @T
C
=141°C,
rectangular wave form
8.3 ms, half Sine pulse
T
J
=25℃,I
AS
=8A,L=1.7mH
Current decaying linearly to zero in 1
μsec Frequency limited by T
J
max.
V
A
=1.5×V
R
typical
Max.
35(81CNQ035)
40(81CNQ040)
45(81CNQ045)
40(Per Leg)
80(Per Device)
950
54
8
Units
V
A
A
mJ
A
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81CNQ SERIES
Technical Data
Data Sheet N1060, Rev. B
Electrical Characteristics:
Characteristics
Forward Voltage Drop
(Per leg) *
Symbol
V
F1
V
F2
Reverse Current (Per leg) *
Junction Capacitance
(Per leg)
Series Inductance
(Per leg)
Voltage Rate of Change
* Pulse width < 300 µs, duty cycle < 2%
Condition
@ 40A, Pulse, T
J
= 25
C
@ 80A, Pulse, T
J
= 25
C
@ 40A, Pulse, T
J
= 125
C
@ 80A, Pulse, T
J
= 125
C
@V
R
= rated V
R
T
J
= 25
C
@V
R
= rated V
R
T
J
= 125
C
@V
R
= 5V, T
C
= 25
C
f
SIG
= 1MHz
Measured lead to lead 5 mm from
package body
-
Typ.
0.54
0.64
0.46
0.56
0.03
25
2200
5.5
-
Max.
0.60
0.74
0.54
0.66
5
45
2600
-
10,000
Units
V
V
mA
mA
pF
nH
V/s
I
R1
I
R2
C
T
L
S
dv/dt
Thermal-Mechanical Specifications:
Characteristics
Junction Temperature
Storage Temperature
Typical Thermal Resistance
Junction to Case
(per leg)
Typical Thermal Resistance
Junction to Case
(per package)
Typical Thermal Resistance, case
to Heat Sink
Mounting Torque
Approximate Weight
Case Style
Symbol
T
J
T
stg
R
JC
R
JC
R
cs
TM
wt
DC operation
DC operation
Mounting surface, smooth and
greased
-
-
PRM2 PRM2-SL PRM2-SM
Condition
-
-
Specification
-55 to +175
-55 to +175
0.85
0.42
0.30
40(min)
58(max)
7.8
Units
C
C
C/W
C/W
C/W
Kg-cm
g
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81CNQ SERIES
Technical Data
Data Sheet N1060, Rev. B
Ratings and Characteristics Curves
Marking Diagram
Where XXXX is YYWW
1st row SS YYWWL
2nd row 81CNQ035/SL/SM
3rd row 1 2 3 (pin)
SS
= SS
YY
= Year
WW
= Week
Cautions：Molding
resin
Epoxy resin UL:94V-0
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81CNQ SERIES
Technical Data
Data Sheet N1060, Rev. B
Ordering Information
Device
81CNQ035
81CNQ035S2
81CNQ040
81CNQ040S2
81CNQ045
81CNQ045S2
81CNQ035SL
81CNQ040SL
81CNQ045SL
81CNQ035SM
81CNQ035SMS2
81CNQ040SM
81CNQ040SMS2
81CNQ045SM
81CNQ045SMS2
Package
PRM2
PRM2
PRM2
PRM2
PRM2
PRM2
PRM2-SL
PRM2-SL
PRM2-SL
PRM2-SM
PRM2-SM
PRM2-SM
PRM2-SM
PRM2-SM
PRM2-SM
Terminals finish
Nickel plated
Pure Sn dipped
Nickel plated
Pure Sn dipped
Nickel plated
Pure Sn dipped
Nickel plated
Nickel plated
Nickel plated
Nickel plated
Pure Sn dipped
Nickel plated
Pure Sn dipped
Nickel plated
Pure Sn dipped
Shipping
48pcs / box
48pcs / box
48pcs / box
48pcs / box
48pcs / box
48pcs / box
100pcs / box
100pcs / box
100pcs / box
48pcs / box
48pcs / box
48pcs / box
48pcs / box
48pcs / box
48pcs / box
Mechanical Dimensions PRM2 (Inches/Millimeters)
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81CNQ SERIES
Technical Data
Data Sheet N1060, Rev. B
Mechanical Dimensions PRM2-SL (Inches/Millimeters)
Mechanical Dimensions PRM2-SM (Inches/Millimeters)
China - Germany - Korea - Singapore - United States
http://www.smc-diodes.com - sales@ smc-diodes.com
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