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www.protekdevices.com
05051.R5 6/02
SM16LC03
thru
SM16LC36C
LOW CAPACITANCE TVS ARRAYS
APPLICATIONS
Wireless Communication Circuits
RS-422, RS-432 & RS-485
Low Voltage ASICs
Ethernet - 10/100 Base T
IEC COMPATIBILITY (EN61000-4)
61000-4-2 (ESD): Air - 15kV, Contact - 8kV
61000-4-4 (EFT): 40A - 5/50ns
61000-4-5 (Surge): 12A, 8/20s - Level 1 (Line-Gnd) & Level 2 (Line-Line)
FEATURES
500 Watts Peak Pulse Power per Line (tp=8/20s)
Unidirectional & Bidirectional Configurations
ESD Protection > 40 kilovolts
Available in Multiple Voltage Types: 3.3V to 36V
PROTECTS UP TO EIGHT (8) LINES
LOW CAPACITANCE: 15pF
MECHANICAL CHARACTERISTICS
Molded JEDEC SO-16 Package
Weight 0.15 grams (Approximate)
Flammability rating UL 94V-0
16mm Tape and Reel Per EIA Standard 481
Marking: Logo, Part Number & Pin One Defined By Dot on Top of Package
CIRCUIT DIAGRAMS
SO-16
1
2
3
4
12
11
8
7
6
5
16
15
14
13
10
9
UNIDIRECTIONAL
1
2
3
4
12
11
8
7
6
5
16
15
14
13
10
9
BIDIRECTIONAL
05051
. . . engineered solutions for the transient environmentTM
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SM16LC36C
05051.R5 6/02
DEVICE CHARACTERISTICS
ELECTRICAL CHARACTERISTICS PER LINE @ 25C Unless Otherwise Specified
PART
NUMBER
(Notes 1 - 3)
RATED
STAND-OFF
VOLTAGE
V
WM
VOLTS
MINIMUM
BREAKDOWN
VOLTAGE
@ 1mA
V
(BR)
VOLTS
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
@ I
P
= 1 A
V
C
VOLTS
MAXIMUM
CLAMPING
VOLTAGE
(See Fig. 2)
@ 8/20s
V
C
@ I
PP
TEMPERATURE
COEFFICIENT
OF V
(BR)
q
V
(BR)
mV/C
SM16LC03
SM16LC03C
SM16LC05
SM16LC05C
SM16LC08
SM16LC08C
SM16LC12
SM16LC12C
SM16LC15
SM16LC15C
SM16LC24
SM16LC24C
SM16LC36
SM16LC36C
3.3
3.3
5.0
5.0
8.0
8.0
12.0
12.0
15.0
15.0
24.0
24.0
36.0
36.0
4.5
4.5
6.0
6.0
8.5
8.5
13.3
13.3
16.7
16.7
26.7
26.7
40.0
40.0
7.0
7.0
9.8
9.8
13.4
13.4
19.0
19.0
25.5
25.5
40.0
40.0
53.0
53.0
23.0V @ 43A
23.0V @ 43A
24.0V @ 42A
24.0V @ 42A
26.0V @ 30A
26.0V @ 30A
33.0V @ 21A
33.0V @ 21A
39.0V @ 15A
39.0V @ 15A
57.0V @ 10A
57.0V @ 10A
72.0V @ 7.0A
72.0V @ 7.0A
125
125
20
20
10
10
2
2
2
2
2
2
2
2
MAXIMUM
LEAKAGE
CURRENT
@V
WM
I
D
A
MAXIMUM
CAPACITANCE
@ 0V, 1 MHz
C
pF
15
15
15
15
15
15
15
15
15
15
15
15
15
15
-3
-3
3
3
9
9
16
16
17
17
26
26
36
36
Note 1: Part numbers with a "C" suffix are bidirectional devices, i.e., SM16LC05C.
Note 2: Unidirectional Devices Only: Do not surge from pins 16 to 1, 15 to 2, 14 to 3, 13 to 4, 12 to 5, 11 to 6, 10 to 7 and 9 to 8. PIV typically
greater than 100V for each rectifier diode.
Note 3: SPICE model and parameters available for this device on the ProTek Devices website:
www.protekdevices.com
.
Note 1: Only applies to unidirectional devices.
MAXIMUM RATINGS @ 25C Unless Otherwise Specified
Operating Temperature
SYMBOL
VALUE
-55
C to 150
C
C
C
-55
C to 150
C
UNITS
T
J
T
STG
PARAMETER
Storage Temperature
Peak Pulse Power (t
p
= 8/20s) - See Figure 1
P
PP
500
Watts
Forward Voltage @ 50mA, 300s - Square Wave (Note 1)
Volts
1.5
V
F
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05051.R5 6/02
SM16LC03
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SM16LC36C
GRAPHS
0.1 1 10 100 1,000 10,000
t
d
- Pulse Duration - s
500W 8/20s Waveform
10
100
1,000
10,000
P
PP
- Peak Pulse Power - Watts
FIGURE 1
PEAK PULSE POWER VS PULSE TIME
0 5 10 15 20 25 30
t - Time - s
0
20
40
60
80
100
120
I
PP
- Peak Pulse Current - % of I
PP
TEST
WAVEFORM
PARAMETERS
t
f
= 8s
t
d
= 20s
t
f
Peak Value I
PP
e
-t
t
d
= t
I
PP
/2
FIGURE 2
PULSE WAVE FORM
0 25 50 75 100 125 150
T
L
- Lead Temperature - C
20
40
60
80
100
% Of Rated Power
Peak Pulse Power
8/20s
Average Power
FIGURE 3
POWER DERATING CURVE
0
FIGURE 4
OVERSHOOT & CLAMPING VOLTAGE FOR SM16LC05
ESD Test Pulse: 25 kilovolt, 1/30ns (waveform)
5
V
o
lts per Division
0
10
20
30
40
FIGURE 6
RETURN LOSS - SM16LC12
100 MHz per Division
10 db per Division
-50 db
-20 db
Ref 0 db
20 db
FIGURE 5
INSERTION LOSS - SM16LC12
100 MHz per Division
10 db per Division
-50 db
-20 db
Ref 0 db
20 db
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SM16LC36C
05051.R5 6/02
The SM16LC & SM16LCxxC Series are TVS arrays designed to protect I/O or data lines from the damaging effects of ESD (> 40kV), EFT and other
types of surges. This product series provides both unidiretional and bidirectional protection, with a surge capability of 500 Watts P
PP
per line for an 8/
20s waveform.
BIDIRECTIONAL CONFIGURATION
COMMON-MODE PROTECTION (Figure 1)
Ideal for RS-485 applications, the SM16LCxxC Series provides up to
eight (8) lines of protection in a common mode configuration as depicted
in Figure 1. This low capacitance series allows the transceiver or
telecommunications circuit to operate safely without significant signal
distortion.
Circuit connectivity is as follows:
Lines 1 is connected to Pin 9.
Line 2 is connected to Pin 10.
Line 3 is connected to Pin 11.
Line 4 is connected to Pin 12.
Line 5 is connected to Pin 13.
Line 6 is connected to Pin 14.
Line 7 is connected to Pin 15.
Line 8 is connected to Pin 16.
Pins 1-8 are connected to ground.
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Circuit board layout is critical for Electromagnetic Compatibil-
ity (EMC) protection. The following guidelines are recom-
mended:
The protection device should be placed near the input
terminals or connectors, the device will divert the
transient current immediately before it can be coupled
into the nearby traces.
The path length between the TVS device and the
protected line should be minimized.
All conductive loops including power and ground loops
should be minimized.
The transient current return path to ground should be
kept as short as possible to reduce parasitic inductance.
Ground planes should be used whenever possible. For
multilayer PCBs, use ground vias.
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
TRANSCEIVER
D
D
R
R
Figure 1. Birectional Common-Mode Protection
LINE 1
LINE 2
LINE 3
LINE 4
LINE 5
LINE 6
LINE 7
LINE 8
APPLICATION NOTES
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05051.R5 6/02
SM16LC03
thru
SM16LC36C
COPYRIGHT ProTek Devices 2001
SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical characteristics described herein without notice (except JEDEC).
DESIGN CHANGES: ProTek reserves the right to discontinue product lines without notice, and that the final judgement concerning selection and specifications is the buyer's and that in furnishing engineering and
technical assistance, ProTek assumes no responsibility with respect to the selection or specifications of such products.
PACKAGE OUTLINE & DIMENSIONS
A
B
C
D
F
G
J
K
P
R
10.00
4.00
1.75
0.49
1.25
1.27 BSC
0.25
0.25
6.20
0.50
0.386
0.150
0.054
0.014
0.016
0.05 BSC
0.008
0.004
0.229
0.010
0.393
0.157
0.068
0.019
0.049
0.05 BSC
0.009
0.009
0.244
0.019
9.80
3.80
1.35
0.35
0.40
1.27 BSC
0.19
0.10
5.80
0.25
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
PACKAGE DIMENSIONS
NOTES:
1. - T - = Seating Plane and Datum Surface.
2. Dimensions "A" and "B" are Datum.
3. Dimensions "A" and "B" do not include mold
protrusions.
4. Maximum mold protrusion is 0.015" (0.380 mm)
per side.
5. Dimensioning and tolerances per ANSI Y14.5M,
1982.
6. Dimensions are exclusive of mold flash and metal
burrs.
PACKAGE OUTLINE
SO-16
MOUNTING PAD
M
-A-
-B- P
D
G
-T-
K
C
J
R X 45
F
0.010" (0.25 MM)
M
B
M
8 PL
0.010" (0.25 MM)
S
B
M
16 PL
T
A
S
16
9
8
1
0.050" TYP
0.030"
0.005"
0.245" MIN
0.160"
0.005"
0.045"
0.005"
0
- 7
06007 Rev 1 - 11/01
Protek Devices
2929 South Fair Lane, Tempe, AZ 85282
Tel: 602-431-8101 Fax: 602-431-2288
E-Mail: sales@protekdevices.com
Web Site: www.protekdevices.com
PART NUMBER SUFFIXES USED FOR TAPE & REEL/BULK ORDERING:
Surface mount product is taped and reeled in accordance with EIA-481.
Suffix-T7 = 7 Inch Reel - 1,000 pieces per reel i.e.: SM16LC03 - T7
Suffix-T13 = 13 Inch Reel - 2,500 pieces per reel i.e: SM16LC03 - T13
No Suffix = Product Shipped in Tubes of 37 pcs per Tube
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