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PDF SM05TG Data sheet ( Hoja de datos )
| Número de pieza | SM05TG | |
| Descripción | TVS Diode Array | |
| Fabricantes | Semtech Corporation | |
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Hay una vista previa y un enlace de descarga de SM05TG (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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SM05 THRU SM36
TVS Diode Array
PROTECTION PRODUCTS
Description
The SM series of transient voltage suppressors (TVS)
are designed to protect components which are
connected to data and transmission lines from voltage
surges caused by ESD (electrostatic discharge), EFT
(electrical fast transients), and lightning.
TVS diodes are characterized by their high surge
capability, low operating and clamping voltages, and
fast response time. This makes them ideal for use as
board level protection of sensitive semiconductor
components. The dual-junction common-anode design
allows the user to protect one bidirectional data line or
two unidirectional lines. The low profile SOT23
package allows flexibility in the design of crowded
circuit boards.
The SM series will meet the surge requirements of IEC
61000-4-2 (Formerly IEC 801-2), Level 4, Human
Body Model for air and contact discharge.
Features
u 300 watts peak pulse power (tp = 8/20µs)
u Transient protection for data & power lines to
IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact)
IEC 61000-4-4 (EFT) 40A (tp=5/50ns)
IEC 61000-4-5 (Lightning) 12A (tp=1.2/50µs)
u Protects one bidirectional line or two unidirectional
lines
u Working Voltages: 5V, 12V, 15V, 24 and 36V
u Low clamping voltage
u Solid-state silicon avalanche technology
Mechanical Characteristics
u JEDEC SOT23 package
u Molding compound flammability rating: UL 94V-0
u Marking : Marking Code
u Packaging : Tape and Reel per EIA 481
Applications
u Cellular Handsets and Accessories
u Portable Electronics
u Industrial Controls
u Set-Top Box
u Servers, Notebook, and Desktop PC
Circuit Diagram
Schematic & PIN Configuration
Revision 9/2000
SOT23 (Top View)
1 www.semtech.com
1 page  
PROTECTION PRODUCTS
Applications Information
Device Connection Options
The SM series is designed to protect one bidirectional
or two unidirectional data or I/O lines operating at 5 to
36 volts. Connection options are as follows:
l Bidirectional: Pin 1 is connected to the data line
and pin 2 is connected to ground (Since the device
is symmetrical, these connections may be re-
versed). For best results, the ground connection
should be made directly to a ground plane on the
board. The path length should be kept as short as
possible to minimize parasitic inductance. Pin 3 is
not connected.
l Unidirectional: Data lines are connected to pin 1
and pin 2. Pin 3 is connected to ground. For best
results, this pin should be connected directly to a
ground plane on the board. The path length should
be kept as short as possible to minimize parasitic
inductance.
Circuit Board Layout Recommendations for Suppres-
sion of ESD.
Good circuit board layout is critical for the suppression
of fast rise-time transients such as ESD. The following
guidelines are recommended (Refer to application note
SI99-01 for more detailed information):
l Place the TVS near the input terminals or connec-
tors to restrict transient coupling.
l Minimize the path length between the TVS and the
protected line.
l Minimize all conductive loops including power and
ground loops.
l The ESD transient return path to ground should be
kept as short as possible.
l Never run critical signals near board edges.
l Use ground planes whenever possible.
SM05 THRU SM36
Device Schematic & Pin Configuration
RS-232 Transceiver Protection Example
ã 2000 Semtech Corp.
5
www.semtech.com
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| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet SM05TG.PDF ] | |
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