RSM712
Asymmetrical TVS Diode for Extended Common-Mode RS-485
DESCRIPTION
The RSM712 transient voltage suppressor (TVS)
diode is designed for asymmetrical (12V to -7V)
protection in multi-point data transmission
standard RS-485 applications. The RSM712 may
be used to protect devices from transient
voltages resulting from electrostatic discharge
(ESD), electrical fast transients (FET), and
lightning.
The RSM712 features 400 Watts (tp=8/20 s) of
power handling capability to accommodate the
higher transient voltage levels which may be
expected
in
extended
common
mode
applications. This provides higher equipment
reliability and eliminates the “ guess work”
required when using zener diodes that are not
rated to handle such transient conditions.
The integrated design aids in reducing voltage
over-shoot associated with trace inductance. The
low clamping voltage of the RSM712 minimizes
the stress on the protected transceiver. The
SOT-23 package allows flexibility in the design of
“crowed” circuit boards.
400 watts peak pulse power (tp=8/20 s)
Transient protection for asymmetrical data lines to
IEC 61000-4-2 (ESD) ±15kV(air), ±8kV(contact)
IEC 61000-4-4 (FET) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 12A (8/20 s)
Protects two +12V to -7V lines
Low capacitance
Low leakage current
Low clamping voltage
Solid-state silicon avalanche technology
RoHS compliant
P/N suffix V means AEC-Q101 qualified,
e.g:RSM712V
FEATURES
MACHANICAL DATA
SOT-23 package
Flammability Rating: UL 94V-0
Terminal: Matte tin plated.
Packaging: Tape and Reel
High temperature soldering guaranted:260
Reel size: 7 inch
/10s
ORDERING INFORMATION
Device: RSM712
Package: SOT-23
Marking: 712 or C72
Material: Halogen free
Packing: Tape & Reel
Quantity per reel: 3,000pcs
APPLICATIONS
Protection of RS-485 transceivers with extended
common-mode range
Security systems
Automatic Teller Machines
HFC systems
Networks
PIN CONFIGURATION&SCHEMATIC
CIRCUIT DIAGRAM
2019-11/01
REV:C
ABSOLUTE MAXIMUM RATING (Tamb=25°C, unless otherwise specified)
Symbol
P
PP
I
PP
V
ESD
T
OPT
T
STG
Parameter
Peak Pulse Power (8/20 s)
Peak Pulse Current (8/20 s)
ESD per IEC 61000-4-2 (Air)
ESD per IEC 61000-4-2 (Contact)
Operating Temperature
Storage Temperature
Value
400
17
±15
±8
-55/+150
-55/+150
Units
W
A
kV
qC
qC
ELECTRICAL CHARACTERISTICS (Tamb=25°C,unless otherwise specified)
Symbol
Parameter
Test Condition
Pin 1 to 3 and
Pin 2 to 3
(12V) TVS
Min
V
RWM
V
BR
I
R
V
C1
V
C2
C
J1
C
J2
Reverse Working
Voltage
Reverse
Breakdown Voltage
Reverse Leakage
Current
Clamping Voltage 1
Clamping Voltage 2
Junction
Capacitance 1
Junction
Capacitance 2
Pin 3 to 1 or
Pin 2 to 1
I
T
= 1mA
V
R
= V
RWM
I
PP
= 5A,
t
p
= 8/20 s
I
PP
= 17A,
t
p
= 8/20 s
V
R
= 0V,
f = 1MHz
V
R
= V
RWM
,
f = 1MHz
13.3
1
20
26
75
45
45
Typ
Max
12
7.5
20
10
12
75
Pin 3 to 1 and
Pin 3 to 2
(7V TVS)
Min
Typ
Max
7
V
V
A
V
V
pF
pF
Units
RATING AND CHARACTERISTICS CURVES (RSM712)
SOT-23 PACKAGE OUTLINE DIMENSIONS
DISCLAIMER NOTICE
Rectron Inc reserves the right to make changes without notice to any product
specification herein, to make corrections, modifications, enhancements or other
changes. Rectron Inc or anyone on its behalf assumes no responsibility or liabi-
lity for any errors or inaccuracies. Data sheet specifications and its information
contained are intended to provide a product description only. "Typical" paramet-
ers which may be included on RECTRON data sheets and/ or specifications ca-
n and do vary in different applications and actual performance may vary over ti-
me. Rectron Inc does not assume any liability arising out of the application or
use of any product or circuit.
Rectron products are not designed, intended or authorized for use in medical,
life-saving implant or other applications intended for life-sustaining or other rela-
ted applications where a failure or malfunction of component or circuitry may di-
rectly or indirectly cause injury or threaten a life without expressed written appr-
oval of Rectron Inc. Customers using or selling Rectron components for use in
such applications do so at their own risk and shall agree to fully indemnify Rect-
ron Inc and its subsidiaries harmless against all claims, damages and expendit-
ures.
