444CNQ SERIES
Technical Data
Data Sheet N1234, Rev. C
444CNQ035/444CNQ040/444CNQ045
SCHOTTKY RECTIFIER
Features
125℃ T
J
operation
Center tap module
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
This is a Pb − Free Device
All SMC parts are traceable to the wafer lot
PRM4 (Non-Isolated)
Additional testing can be offered upon request
Circuit Diagram
Applications
High current switching power supply
Plating power supply
Free-Wheeling diodes
Reverse battery protection
Converters
UPS System
Welding
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
=81°C,
rectangular wave form
8.3 ms, half Sine pulse
T
J
=25℃,I
AS
=40A,L=0.34mH
Current decaying linearly to zero
in 1 μsec Frequency limited by
T
J
max. V
A
=1.5×V
R
typical
Max.
35
444CNQ035
40
444CNQ040
45
444CNQ045
220(Per Leg)
440(Per Device)
4560
270
40
Units
V
A
A
mJ
A
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444CNQ SERIES
Technical Data
Data Sheet N1234, Rev. C
Electrical Characteristics:
Characteristics
Forward Voltage Drop(Per Leg)*
Symbol
V
F1
V
F2
Condition
@ 220A, Pulse, T
J
= 25
C
@ 440A, Pulse, T
J
= 25
C
@ 220A, Pulse, T
J
= 125
C
@ 440A, 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
-
Typ.
0.48
0.59
0.43
0.55
5
3000
8500
-
Max.
0.53
0.69
0.51
0.68
20
3500
10300
10,000
Units
V
V
Reverse Current(Per Leg)*
Junction Capacitance(Per leg)
Voltage Rate of Change
* Pulse width < 300 µs, duty cycle < 2%
I
R1
I
R2
C
T
dv/dt
mA
mA
pF
V/s
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
Condition
-
-
DC operation
DC operation
Mounting surface, smooth
and greased
-
-
Specification
-55 to +125
-55 to +125
0.20
0.10
0.10
Mounting
Torque
Terminal
Torque
24(min)
35(max)
35(min)
46(max)
Units
C
C
C/W
C/W
C/W
T
M
wt
Kg-cm
g
PRM4 Non-Isolated
79
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444CNQ SERIES
Technical Data
Data Sheet N1234, Rev. C
Ratings and Characteristics Curves
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444CNQ SERIES
Technical Data
Data Sheet N1234, Rev. C
Mechanical Dimensions PRM4 Non-Isolated(Millimeters/Inches)
Marking Diagram
Ordering Information
Device
444CNQ SERIES
PRM4(Non- Isolated)
(Pb-Free)
Package
Shipping
9 pcs/box
Where XXXX is YYWW
444CNQ035
SS
YY
WW
= Part name
= SS
= Year
= Week
For information on tape and reel specifications, including part
orientation and tape sizes, please refer to our tape and reel
packaging specification.
Cautions：Molding
resin
Epoxy resin UL:94V-0
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444CNQ SERIES
Technical Data
Data Sheet N1234, Rev. C
DISCLAIMER:
1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product
characteristics. Before ordering, purchasers are advised to contact the SMC - Sangdest Microelectronics (Nanjing) Co., Ltd sales
department for the latest version of the datasheet(s).
2- In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment,
medical equipment , and safety equipment) , safety should be ensured by using semiconductor devices that feature assured safety or by
means of users’ fail-safe precautions or other arrangement .
3- In no event shall SMC - Sangdest Microelectronics (Nanjing) Co., Ltd be liable for any damages that may result from an accident or
any other cause during operation of the user’s units according to the datasheet(s). SMC - Sangdest Microelectronics (Nanjing) Co., Ltd
assumes no responsibility for any intellectual property claims or any other problems that may result from applications of information,
products or circuits described in the datasheets.
4- In no event shall SMC - Sangdest Microelectronics (Nanjing) Co., Ltd be liable for any failure in a semiconductor device or any
secondary damage resulting from use at a value exceeding the absolute maximum rating.
5- No license is granted by the datasheet(s) under any patents or other rights of any third party or SMC - Sangdest Microelectronics
(Nanjing) Co., Ltd.
6- The datasheet(s) may not be reproduced or duplicated, in any form, in whole or part, without the expressed written permission of SMC
- Sangdest Microelectronics (Nanjing) Co., Ltd.
7- The products (technologies) described in the datasheet(s) are not to be provided to any party whose purpose in their application will
hinder maintenance of international peace and safety nor are they to be applied to that purpose by their direct purchasers or any third
party. When exporting these products (technologies), the necessary procedures are to be taken in accordance with related laws and
regulations..
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