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Электронный компонент: LC03-3.3WTDK

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PROTECTION PRODUCTS
1
www.semtech.com
PROTECTION PRODUCTS
LC03-3.3WTDK
Low Capacitance 3.3 Volt TVS
for Protection of TDK LIU's
!
1800 watts peak pulse power (t
p
= 8/20s)
!
Transient protection for high-speed data lines to
Bellcore 1089 (Intra-Building) 100A (2/10s)
ITU K.20 I
PP
=40A (5/310s)
ITU K.41 50A (8/20s)
IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 100A (8/20s)
!
Low capacitance for high-speed interfaces
!
Low operating voltage (3.3V)
!
Low clamping voltage
!
Integrated structure saves board space and
increases reliability
Description
Features
Circuit Diagram
Schematic & PIN Configuration
Revision 04/15/03
Applications
Mechanical Characteristics
SO-8 (Top View)
The LC03-3.3WTDK transient voltage suppressor is
designed to protect components which are connected
to high speed data and telecommunication lines from
voltage surges caused by lightning, electrostatic
discharge (ESD), and electrical fast transients (EFT).
Transient Voltage Suppressors (TVS) are ideal for use
as board level protection of sensitive semiconductor
components. The LC03-3.3WTDK combines a TVS
diode with a rectifier bridge to provide low capacitance
transient protection without signal degradation. The
LC03-3.3WTDK utilizes Semtech's EPD technology for
superior electrical characteristics at 3.3 volts.
The LC03-3.3WTDK meets the short-haul (intra-build-
ing) transient immunity requirements of Bellcore 1089
and the lightning immunity requirements of ITU K.20,
ITU K.41, and IEC 61000-4-5.
The LC03.3.3WTDK has been tested for signal integrity
and transient protection TDK's family of line interface
units (LIU's).
!
JEDEC SO-8 package
!
Molding compound flammability rating: UL 94V-0
!
Marking : Part number, date code
!
Packaging : Tube or Tape and Reel per EIA 481
!
TDK STM-1e / E4 LIU Protection
78P2253
78P2254
78P2351
78P2352
!
TDK DS3/E3/STS1 LIU Protection
78P7200L
78P2241B
78P2341JAT
78P2342JAT
78P2343JAT
78P2344JAT
1
2
3
4
5
6
7
8
Pin 1 and 8
Pin 4 and 5
Pin 2, 3,
6, and 7
Ground
2
2003 Semtech Corp.
www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
LC03-3.3WTDK
Absolute Maximum Rating
Electrical Characteristics
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3
2003 Semtech Corp.
www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
LC03-3.3WTDK
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
Power Derating Curve
Clamping Voltage vs. Peak Pulse Current
0
10
20
30
40
50
60
70
80
90
100
110
0
5
10
15
20
25
30
Time (s)
P
e
rcen
t
o
f

I
PP
e
-t
td = I
PP
/2
Waveform
Parameters:
tr = 8s
td = 20s
Pulse Waveform
Capacitance vs. Reverse Voltage
0
10
20
30
40
50
60
70
80
90
100
110
0
25
50
75
100
125
150
175
Ambient Temperature - T
A
(
o
C)
% of Rated Power or I
PP
0
5
10
15
20
0
20
40
60
80
100
Peak Pulse Current - I
PP
(A)
Cl
amp
i
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g
V
o
l
t
ag
e -
C
j
(V)
Waveform
Parameters:
tr = 8s
td = 20s
Line-To-G
Line-To-Line
7
7.5
8
8.5
9
9.5
10
0
0.5
1
1.5
2
2.5
3
3.5
Reverse Voltage - V
R
(V)
C
a
p
aci
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a
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ce -
C
j
(pF)
0.1
1
10
100
0.1
1
10
100
1000
Pulse Duration - t
p
(s)
P
e
a
k
Pu
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e
Po
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e
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-

P
pk
(k
W
)
Insertion Loss S21
(Line to Ground)
CH1
S21
LOG
3 dB/
REF 0 dB
START
.
030
MHz
3
STOP
000
.
000
000
MHz
4
2003 Semtech Corp.
www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
LC03-3.3WTDK
Connection for Differential (Line-to-Line) and Com-
mon Mode Protection (Line-to-Ground)
Device Connection Options for Protection of Two
High-Speed Data Lines
The LC03-3.3WTDK is designed to protect two high-
speed data lines (one differential pair) from transient
over-voltages which result from lightning and ESD. The
device can be configured to protect in differential (Line-
to-Line) and common (Line-to-Ground) mode. Data line
inputs/outputs are connected at pins 1 to 8, and 4 to
5 as shown. Pins 2, 3, 6, and 7 are connected to
ground. These pins should be connected directly to a
ground plane on the board for best results. The path
length is kept as short as possible to minimize parasitic
inductance. In applications where high common mode
voltages are present, differential protection is achieved
by leaving pins 2, 3, 6, and 7 not connected.
Connection for Differential Protection
(Line-to-Line)
Applications Information
DS3/E3/STS-1 Protection
Typical Applications
LC03-3.3WTDK
LC03-3.3WTDK
5
2003 Semtech Corp.
www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
LC03-3.3WTDK
Land Pattern
Outline Drawing
6
2003 Semtech Corp.
www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
LC03-3.3WTDK
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
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Note:
(1) No suffix indicates tube pack.
Ordering Information