PROTECTION PRODUCTS
1www.semtech.com
PROTECTION PRODUCTS
SL05 through SL24
Low Capacitance TVS Diode
For High Speed Data Interfaces
Features
Circuit Diagram Schematic & PIN Configuration
Revision 09/23/04
The SL series of TVS arrays are designed to protect
sensitive electronics from damage or latch-up due to
ESD, lightning, and other voltage-induced transient
events. They are available with operating voltages of
5V, 12V, 15V and 24V.
TVS diodes are solid-state devices designed specifically
for transient suppression. They offer desirable charac-
teristics for board level protection including fast re-
sponse time, low operating and clamping voltage, and
no device degradation. The SL series devices feature
a low capacitance, fast switching compensation diode
in series with a standard TVS diode. This effectively
reduces the overall capacitance of the device to less
than 5pF making it an integrated, low capacitance
solution for use on high-speed interfaces.
The SL series devices may be used to meet the immu-
nity requirements of IEC 61000-4-2, level 4. Applications
Mechanical Characteristics
High-Speed data lines
Cellular handsets AND accessories
Universal Serial Bus (USB) port protection
Portable instrumentation
LAN/WAN equipment
Peripherals
Transient protection for high-speed 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) 12A (8/20µs)
Small package for use in portable electronics
Two devices will protect one line
Low capacitance for high-speed data lines
Working voltages: 5V, 12V, 15V and 24V
Solid-state silicon avalanche technology
JEDEC SOT23 package
Molding compound flammability rating: UL 94V-0
Marking : Marking Code
Packaging : Tape and Reel per EIA 481
SOT23 Top View
1
2
3
(N.C.)
Description
22004 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
SL05 through SL24
Absolute Maximum Rating
Electrical Characteristics
50LS
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MWR
5V
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RB
I
t
Am1=6 V
tnerruCegakaeLesreveRI
R
V
MWR
C°52=T,V5=02Aµ
egatloVgnipmalCV
C
I
PP
,A1=
t
p
sµ02/8=
8.9V
egatloVgnipmalCV
C
I
PP
,A5=
t
p
sµ02/8=
11V
tnerruCesluPkaePI
PP
t
p
sµ02/8=71A
ecnaticapaCnoitcnuJC
j
2ot1niP
V
R
zHM1=f,V0=
5Fp
gnitaRlobmySeulaVstinU
t(rewoPesluPkaeP
p
)sµ02/8=P
kp
003sttaW
)2-4-00016CEIrepMBH(egatloVDSEV
DSE
52>Vk
erutarepmeTgniredloSdaeLT
L
).ces01(062C°
erutarepmeTgnitarepOT
J
521+ot55-C°
erutarepmeTegarotST
GTS
051+ot55-C°
21LS
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MWR
21V
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RB
I
t
Am1=3.31V
tnerruCegakaeLesreveRI
R
V
MWR
C°52=T,V21=1Aµ
egatloVgnipmalCV
C
I
PP
,A1=
t
p
sµ02/8=
91V
egatloVgnipmalCV
C
I
PP
,A5=
t
p
sµ02/8=
42V
tnerruCesluPkaePI
PP
t
p
sµ02/8=21A
ecnaticapaCnoitcnuJC
j
2ot1niP
V
R
zHM1=f,V0=
5Fp
32004 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
SL05 through SL24
Electrical Characteristics (Continued)
51LS
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MWR
51V
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RB
I
t
Am1=7.61V
tnerruCegakaeLesreveRI
R
V
MWR
C°52=T,V51=1Aµ
egatloVgnipmalCV
C
I
PP
,A1=
t
p
sµ02/8=
42V
egatloVgnipmalCV
C
I
PP
,A5=
t
p
sµ02/8=
03V
tnerruCesluPkaePI
PP
t
p
sµ02/8=01A
ecnaticapaCnoitcnuJC
j
2ot1niP
V
R
zHM1=f,V0=
5Fp
42LS
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MWR
42V
egatloVnwodkaerBesreveRV
RB
I
t
Am1=7.62V
tnerruCegakaeLesreveRI
R
V
MWR
C°52=T,V42=1Aµ
egatloVgnipmalCV
C
I
PP
,A1=
t
p
sµ02/8=
34V
egatloVgnipmalCV
C
I
PP
,A5=
t
p
sµ02/8=
55V
tnerruCesluPkaePI
PP
t
p
sµ02/8=5A
ecnaticapaCnoitcnuJC
j
2ot1niP
V
R
zHM1=f,V0=
5Fp
42004 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
SL05 through SL24
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
0
10
20
30
40
50
60
70
80
90
100
110
0 25 50 75 100 125 150
Ambient Temperature - TA (oC)
% of Rated Power or IPP
Power Derating Curve
Pulse Waveform
0
10
20
30
40
50
60
70
80
90
100
110
0 5 10 15 20 25 30
Time (µs)
Percent of IPP
e-t
td = IPP/2
Waveform
Parameters:
tr = 8µs
td = 20µs
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kaeP
tnerruC
)A(
kaeP
tnerruC
sn03ta
)A(
kaeP
tnerruC
sn06ta
)A(
tseT
egatloV
tcatnoC(
)egrahcsiD
)Vk(
tseT
egatloV
riA(
)egrahcsiD
)Vk(
15.748 2 2
25184 4 4
35.222166 8
403618 8 51
0.01
0.1
1
10
0.1 1 10 100 1000
Pulse Duration - tp (µs)
Peak Pulse Power - Ppk (kW)
IEC 61000-4-2 Discharge ParametersESD Pulse Waveform (Per IEC 61000-4-2)
52004 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
SL05 through SL24
SL Connection Options
Device Connection for Protection of One High-Speed
Data Line
The SL series devices are designed to protect high-
speed data lines. The SLxx utilizes a low capacitance
compensation diode in series with, but in opposite
polarity to a TVS diode in each line to achieve an
effective capacitance of less than 5pF per device.
During a transient event, the internal rectifier must be
forward biased (TVS is reversed biased). Therefore,
each device will only suppress transient events in one
polarity. To achieve protection in both positive and
negative polarity, a second device is connected in anti-
parallel to the first. On unidirectional lines, a fast
switching steering diode may be used as an alternative
to using two SL devices.
The options for connecting the devices are as follows:
zz
zz
zLow capacitance protection of one high-speed
line: Protection of one unidirectional or bidirec-
tional high-speed line is achieved by connecting two
devices in anti-parallel. Pin 1 of the first device is
connected to the line and pin 2 is connected to
ground (or to a second line for differential protec-
tion). Pin 2 of the second device is connected to
line 1 and pin 1 is connected to ground (or line 2)
as shown. Pin 3 is not connected. During positive
duration transients, the first device will conduct
from pin 1 to 2. The steering diode conducts in the
forward direction while the TVS will avalanche and
conduct in the reverse direction. During negative
transients, the second device will conduct in the
same manner. For optimum protection, the ground
connections should be made directly to the ground
plane for best results. The path length is kept as
short as possible to reduce the effects of parasitic
inductance in the board traces. The path length
between the TVS and the protected line should
also be minimized.
zz
zz
zConnection Option for Unidirectional Lines Only:
An optional method for protecting unidirectional
(normal signal polarities above ground) lines is to
add a fast switching steering diode in parallel to the
SL TVS. Input/outputs are connected to pin 1 of
the SL device and the cathode of the rectifier. The
anode of the diode and pin 2 of the SL TVS are
connected to ground.
Two Devices : Bidirectional or Unidirectional Line
One Devices with Steering Diode : Unidirectional Line
I/O Line Protection
Applications Information
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.
62004 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
SL05 through SL24
Outline Drawing - SOT23 3L
Land Pattern - SOT23 3L
e
e1
D
E1 E
bxN
12
3
A1
A2
A3X
A
bbb C A B
B
C
SEATING PLANE
aaa C
1.401.20
N3 3
0-8°0°8°0° -
.055.047
bbb .008 0.20
aaa .004 0.10
INCHES
.114
L1
E
D
b
e
c
.012
.003
.082
A1
DIM
A
MIN
.000
.035
0.51
0.18
2.64
0.30
0.08
2.10
.022
-
.075
-
.093
.020
.007
.104
(0.55)
1.90 BSC
-
-
2.37
2.90
MILLIMETERS
MAX
0.10
1.12
MIN
DIMENSIONS
0.01
MAXNOM
-
-.004
.044
NOM
0.89
-
-
3.042.80.110 .120
e1 .037 0.95 BSC
L .015 .020 0.500.40.024 0.60
A2 .035 .037 0.950.88.040 1.02
E1 .051 1.30
SEE DETAIL A
SIDE VIEW
DATUMS AND TO BE DETERMINED AT DATUM PLANE
-A- -B-
2.
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
NOTES:
OR GATE BURRS.
DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
3.
1.
-H-
H
DETAIL A
0.25
C
SEATING
PLANE
GAUGE
PLANE 0c
L
L1
REFERENCE IPC-SM-782A.
2.
E .037 0.95
Y
Y
G
ZC
E
X
E1
E1 .075 1.90
NOTES:
1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
DIM
Y
Z
G
X
C
MILLIMETERSINCHES
(2.20)
.055
.141
.039
.031
(.087)
1.40
3.60
1.00
0.80
DIMENSIONS
72004 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
SL05 through SL24
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
Ordering Information
rebmuNtraP daeL
hsiniF leeRrepytQeziSleeR
CT.50LSbPnS000,3hcnI7
CT.21LSbPnS000,3hcnI7
CT.51LSbPnS000,3hcnI7
CT.42LSbPnS000,3hcnI7
TCT.50LSeerFbP000,3hcnI7
TCT.21LSeerFbP000,3hcnI7
TCT.51LSeerFbP000,3hcnI7
TCT.42LSeerFbP000,3hcnI7
Marking Codes
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edoC
50LS50L
21LS21L
51LS51L
42LS42L