Technical Data
Data Sheet N2270, Draft
China - Germany - Korea - Singapore - United States
http://www.smc-diodes.com - sales@ smc-diodes.com
SM712
SM712 TVS Diode
Description
Circuit Diagram
Features
Schematic and Pin Configuration
Mechanical Characteristics
Applications
400 Watts peak pulse power(tp=8/20us)
Transient protection for high speed data lines
IEC 61000-4-2(ESD)±15KV(air),±8KV(contact)
IEC 61000-4-4(EFT) 40A (5/50ns)
IEC 61000-4-5(Lightning) 12A (8/20us)
Protects two +12V to -7V lines
Low capacitance
Low clamping voltage
Solid-state silicon avalanche technology
SOT-23
The SM712 transient voltage suppressor (TVS) diode is
designed for asymmetrical (12V to -7V ) protection in
multi-point data transmission standard RS-485 applications.
The SM712 may be used to protect devices
from transient voltages resulting from electrostatic
discharge (ESD), electrical fast transients (EFT), and
lightning.
The SM712 replaces four discrete components by
integrating two 12V and two 7V TVS diodes in a single
package. The integrated design aids in reducing
voltage over-shoot associated with trace inductance.
The low clamping voltage of the SM712 minimizes the
stress on the protected transceiver. The SOT23
package allows flexibility in the design of “crowded”
circuit boards.
SOT-23 package
Marking: 712
Molding compound flammability rating: UL 94V-0
Technical Data
Data Sheet N2270, Draft
China - Germany - Korea - Singapore - United States
http://www.smc-diodes.com - sales@ smc-diodes.com
SM712
* Pulse width < 300 µs, duty cycle < 2%
For information on tape and reel specifications, including part
orientation and tape sizes, please refer to our tape and reel
packaging specification.
Maximum Ratings:
Characteristics
Symbol
Max.
Units
Peak Pulse Power (tp=8/20us)
P
PK
400
Watts
Peak Pulse Current (tp=8/20us)
I
PP
17
A
Lead Soldering Temperature
T
L
260(10 seconds)
℃
Operating Temperature
T
J
-55 to +125
℃
Storage Temperature
T
STG
-55 to +150
℃
Electrical Characteristics
@T
A
=25°C unless otherwise specified
Pins 1 to 3 and 2 to
3 (12V TVS)
Pins 3 to 1 and 3 to
2 (7V TVS)
Characteristics
Symbol
Condition
Min.
Typ.
Max.
Min.
Typ.
Max.
Units
Reverse Stand-Off Voltage*
V
RWM
-
-
-
12
-
-
7
V
Reverse Breakdown
Voltage*
V
BR
I
PT
=1mA
13.3
-
-
7.5
-
-
V
Reverse Leakage Current*
I
R
V
R
=V
RWM
-
-
1
-
-
20
uA
Clamping Voltage
V
C
I
PP
=5A, tp=8/20us
-
-
20
-
-
10
V
Clamping Voltage
V
C
I
PP
=17A, tp=8/20us
-
-
26
-
-
12
V
Junction Capacitance
Cj
V
R
=0V, f=1MHz
-
75
-
-
75
pF
Ordering Information
Marking Diagram
Device
Package
Shipping
SM712
SOT-23
(Pb-Free)
3000pcs / reel
SM712TR
SOT-23
(Pb-Free)
3000pcs / reel
712 = Device Code