PROTECTION PRODUCTS
1
www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
SD05C through SD24C
Single Line TVS Diode for ESD
Protection in Portable Electronics
Description
Features
Schematic & PIN Configuration
Revision 07/06/04
Applications
Mechanical Characteristics
The SDxxC TVS diodes are designed to replace multi-
layer varistors (MLVs) in portable applications such as
cell phones, notebook computers, and PDA’s. They
offer superior electrical characteristics such as lower
clamping voltage and no device degradation when
compared to MLVs. The SDxxC series TVS diodes are
designed to protect sensitive semiconductor compo-
nents from damage or upset due to electrostatic
discharge (ESD) and other voltage induced transient
events.
The SDxxC is in a SOD-323 package and will protect
one bidirectional line. They are available with working
voltages of 5 - 24 volts. These devices will fit on the
same PCB pad area as an 0805 MLV device. They give
the designer the flexibility to protect one line in applica-
tions where arrays are not practical. Additionally, it
may be “sprinkled” around the board in applications
where board space is at a premium.
They may may be used to meet the ESD immunity
requirements of IEC 61000-4-2, Level 4 (±15kV air,
±8kV contact discharge).
350 Watts peak pulse power (t
p
= 8/20µs)
Transient protection for data lines to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 24A (8/20µs)
Small package for use in portable electronics
Suitable replacement for MLV’s in ESD protection
applications
Protects one I/O or power line
Low clamping voltage
Working voltages: 5V, 12V, 15V, 24V
Low leakage current
Solid-state silicon avalanche technology
EIAJ SOD-323 package
Molding compound flammability rating: UL 94V-0
Marking : Marking code
Packaging : Tape and Reel per EIA 481
Cell Phone Handsets and Accessories
Microprocessor based equipment
Personal Digital Assistants (PDA’s)
Notebooks, Desktops, and Servers
Portable Instrumentation
Pagers
Peripherals
SOD-323 (Top View)
12
2 2004 Semtech Corp.
www.semtech.com
PROTECTION PRODUCTS
SD05C through SD24C
Absolute Maximum Rating
Electrical Characteristics
SVTC50DS
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MWR
5V
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RB
I
t
Am1=6 V
tnerruCegakaeLesreveRI
R
V
MWR
C°52=T,V5=01Aµ
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C
I
PP
t,A5=
p
sµ02/8=8.9V
egatloVgnipmalCV
C
I
PP
t,A42=
p
sµ02/8=5.41V
tnerruCesluPkaePI
PP
t
p
sµ02/8=42A
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j
V
R
zHM1=f,V0=002Fp
SVTC21DS
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egatloVffO-dnatSesreveRV
MWR
21V
egatloVnwodkaerBesreveRV
RB
I
t
Am1=3.31V
tnerruCegakaeLesreveRI
R
V
MWR
C°52=T,V21=1Aµ
egatloVgnipmalCV
C
I
PP
t,A5=
p
sµ02/8=91V
egatloVgnipmalCV
C
I
PP
t,A51=
p
sµ02/8=42V
tnerruCesluPkaePI
PP
t
p
sµ02/8=51A
ecnaticapaCnoitcnuJC
j
V
R
zHM1=f,V0=001Fp
gnitaRlobmySeulaVstinU
t(rewoPesluPkaeP
p
)sµ02/8=P
kp
053sttaW
)2-4-00016CEIrepmrofevaWMBH(egatloVDSEV
DSE
03Vk
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L
).ces01(062C°
erutarepmeTgnitarepOT
J
521+ot55-C°
erutarepmeTegarotST
GTS
051+ot55-C°