LC04-6.TB [SEMTECH]
Dual Low Capacitance TVS Array for Telecom Linecard Applications; 双低电容TVS阵列电信线卡应用
| 型号： | LC04-6.TB |
| 厂家： | 
SEMTECH CORPORATION |
| 描述： | Dual Low Capacitance TVS Array for Telecom Linecard Applications |
| 文件： | 总7页 (文件大小：167K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LC04-6
Dual Low Capacitance TVS Array for
Telecom Linecard Applications
PROTECTION PRODUCTS
Features
Description
The LC04-6 has been specifically designed to protect
sensitive components which are connected to high-
speed telecommunications lines from over voltages
caused by lightning, electrostatic discharge (ESD),
cable discharge events (CDE), and electrical fast
transients (EFT).
Transient protection for high-speed data lines to
Bellcore GR-1089 IPP=70A (10/1000µs)
Bellcore GR 1089 IPP=100A (2/10µs)
ITU K.20 IPP=100A (5/310µs)
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 100A (8/20µs)
Protects two tip and ring line pairs
Low capacitance for high-speed interfaces
High surge capability
The device is in a JEDEC SO-16 NB package. It is
designed to provide metallic surge protection for two
tip and ring line pairs. The low capacitance topology
means signal integrity is preserved on high-speed lines.
The high surge capability (1000W, tp=10/1000µs)
makes the LC04-6 suitable for telecommunications
systems operating in harsh transient environments.
Low clamping voltage
Solid-state silicon avalanche technology
Mechanical Characteristics
JEDEC SO-16 package
Molding compound flammability rating: UL 94V-0
Marking : Part number, date code, logo
Packaging : Tube or Tape and Reel per EIA 481
The LC04-6 is designed to meet the lightning surge
requirements of Bellcore GR-1089 (Intra-building) , FCC
Part 68, ITU K.20, and IEC 61000-4-5. The features of
the LC04-6 are ideal for protecting T1/E1 transceivers
in WAN applications.
Applications
T1/E1 Line Cards
Base Stations
WAN Equipment
CSU/DSU
Multiplexers
Routers
ISP Equipment
Customer Premise Equipment
Circuit Diagram
Schematic & PIN Configuration
Pin 1 - 4
TIP
RING
Pin 13 - 16
SO-16 (Top View)
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1
Revision 04/12/05
LC04-6
PROTECTION PRODUCTS
Absolute Maximum Rating
Rating
Peak Pulse Power (tp = 10/1000µs)
Peak Pulse Current (tp = 10/1000 µs)
Peak Pulse Current (tp = 8/20µs)
Peak Pulse Current (tp = 10/560µs)
Lead Soldering Temperature
Symbol
Ppk
IPP
Value
1000
Units
Watts
A
70
IPP
200
A
IPP
100
A
TL
260 (10 sec.)
-55 to +125
-55 to +150
°C
°C
°C
Operating Temperature
TJ
Storage Temperature
TSTG
Electrical Characteristics
LC04-6
Parameter
Symbol
Conditions
Minimum
Typical
Maximum
Units
V
Reverse Stand-Off Voltage
Reverse Breakdown Voltage
Reverse Leakage Current
VRWM
VBR
IR
6
It = 1mA
6.8
V
VRWM = 6V, T=25°C
15
µA
VRWM = 3V, T=25°C
2
µA
V
Clamping Voltage
Clamping Voltage
Clamping Voltage
Junction Capacitance
VC
VC
VC
Cj
IPP = 10A,
12.5
tp = 10/1000µs
IPP = 70A,
tp = 10/1000µs
15
20
15
V
V
IPP = 100A,
tp = 8/20µs
Each Line
pF
VR = 0V, f = 1MHz
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2005 Semtech Corp.
2
LC04-6
PROTECTION PRODUCTS
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
100
Power Derating Curve
110
100
90
80
70
60
50
40
30
20
10
0
10
1
0
25
50
75
100
125
150
0.1
1
10
100
1000
Ambient Temperature - TA (oC)
Pulse Duration - tp (µs)
Pulse Waveform
Clamping Voltage vs. Peak Pulse Current
110
100
90
80
70
60
50
40
30
20
10
0
14
12
10
8
Waveform
Parameter
tr = 8µs
td = 20µs
e-t
6
td = IPP/2
Waveform
Parameters:
tr = 10µs
4
2
td = 1000µs
0
0
10
20
30
40
50
60
70
80
0
5
10
15
20
25
30
Peak Pulse Current - IPP (A)
Time (µs)
Clamping Voltage vs. Peak Pulse Current
Capacitance vs. Reverse Voltage
25
20
15
10
5
14
12
10
8
6
Waveform
Parameters:
tr = 8µs
4
2
td = 20µs
f=1MHz
0
0
0
1
2
3
4
5
6
7
0
20
40
60
80
100
120
140
160
180
200
Reverse Voltage - VR (V)
Peak Pulse Current - IPP (A)
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2005 Semtech Corp.
3
LC04-6
PROTECTION PRODUCTS
Applications Information
Device Connection Options for Protection of Two
High-Speed Line Pairs
Figure 1 - Connection for Differential (Line-to-Line)
Protection of two Tip/Ring Line Pairs
The LC04-6 is designed to protect four high-speed data
lines (two differential pairs) from transient over-volt-
ages which result from lightning and ESD. Protection
of two line pairs is achieved by connecting the device
as follows: Pins 1-4 are connected to line 1 of the first
pair (i.e. Tip 1) and pins 13-16 are connected to line 2
of the first pair (i.e. Ring 1). Pins 5-8 are connected to
line 1 of the second pair (i.e. Tip 2) and pins 9-12 are
connected to line two of the second pair (i.e. Ring 2).
All pins should be connected for best results. Minimize
parasitic inductance in the protection circuit path by
keeping the trace length between the protected line
and the LC04-6 as short as possible.
TIP 1
RING 1
RING 2
TIP 2
T1/E1 Linecard Protection
A typical T1/E1 linecard protection circuit is shown in
Figure 2. The LC04-6 is connected between Tip and
Ring on the transmit and receive line pairs. It provides
protection to metallic (line-to-line) lightning and ESD
surges. It is designed to meet the intra-building re-
quirements of Bellcore GR-1089. This design takes
advantage of the isolation of the transformer to
suppress common mode surges. The LC04-6 may also
be configured to meet metallic surges of FCC Part68
when used in conjunction with a 5Ω (minimum) PTC or
line feed resistor (LFR). The PTC (or LFR + fuse) are
required to meet the AC power cross requirements, but
will also reduce the effective surge current to levels
within the capability of the LC04-6 (Table 1). To com-
plete the protection circuit, the SRDA05-4 (or
Matte Tin Lead Finish
Matte tin has become the industry standard lead-free
replacement for SnPb lead finishes. A matte tin finish
is composed of 100% tin solder with large grains.
Since the solder volume on the leads is small com-
pared to the solder paste volume that is placed on the
land pattern of the PCB, the reflow profile will be
determined by the requirements of the solder paste.
Therefore, these devices are compatible with both
lead-free and SnPb assembly techniques. In addition,
unlike other lead-free compositions, matte tin does not
have any added alloys that can cause degradation of
the solder joint.
SRDA3.3-4 for 3.3V supplies) is employed as the IC
side protection element. This device helps prevent the
transceiver from latching up by providing fine clamping
of transients that are coupled through the transformer.
The versatility of the LC04-6 makes it ideal for use with
combination long haul/short haul T1/E1 transceivers.
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2005 Semtech Corp.
4
LC04-6
PROTECTION PRODUCTS
Typical Applications
Figure 2 - T1/E1 Line Card protection
Immunity
Standard
Peak Open
Current
Circuit Surge Waveform
Voltage
Peak Short
Circuit
Surge
Current
(A)
Surge
Generator
Source
Resistance
(W)
Total Source
Resistance
(with 5W PTC or
LFC)
Effective
Short
Sircuit
Current
(A)
(V)
(µs)
(W)
Bellcore GR-1089
Intra-Building
800
2/10
100
8
13
61.5
FCC Part 68
1500
10/160
200
7.5
12.5
120
Table 1
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2005 Semtech Corp.
5
LC04-6
PROTECTION PRODUCTS
Outline Drawing - SO-16
h
DIMENSIONS
INCHES MILLIMETERS
A
DIM
A
MIN NOM MAX MIN NOM MAX
D
E
h
e
-
-
-
-
-
-
-
-
-
-
.053
.069 1.35
.010 0.10
.065 1.25
.020 0.31
.010 0.17
1.75
0.25
1.65
0.51
0.25
H
N
A1 .004
A2 .049
c
b
c
.012
.007
2X E/2
GAGE
PLANE
D
E1
E
.386 .390 .394 9.80 9.90 10.00
.150 .154 .157 3.80 3.90 4.00
E1
0.25
L
(L1)
.236 BSC
6.00 BSC
1.27 BSC
01
e
.050 BSC
-
-
h
L
.010
.020 0.25
0.50
DETAIL A
1
2
3
ccc C
.016 .028 .041 0.40 0.72 1.04
(.041)
(1.04)
2X N/2 TIPS
L1
N
e/2
B
16
16
-
-
01
aaa
0°
8°
0°
8°
.004
.010
.008
0.10
0.25
0.20
bbb
ccc
SEE DETAIL A
D
SIDE VIEW
aaa C
A2 A
SEATING
PLANE
C
A1
bxN
bbb
C A-B D
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H-
3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
4. REFERENCE JEDEC STD MS-012, VARIATION AC.
Land Pattern - SO-16
X
DIMENSIONS
DIM
INCHES
(.205)
.118
MILLIMETERS
(5.20)
3.00
1.27
0.60
2.20
7.40
C
G
P
X
Y
Z
(C)
G
Y
Z
.050
.024
.087
.291
P
NOTES:
1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
2. REFERENCE IPC-SM-782A, RLP NO. 304A.
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2005 Semtech Corp.
6
LC04-6
PROTECTION PRODUCTS
Ordering Information
Qty per
Reel
Part Number
Lead Finish
Reel Size
LC04-6.TB
LC04-6
SnPb
SnPb
500
7 Inch
N/A
48/Tube
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Rd., Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
www.semtech.com
2005 Semtech Corp.
7
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