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. . . engineered solutions for the transient environment™
SM16LC36C
LOW CAPACIT
ANCE TVS ARRA
YS
APPLICA
TIONS
✔
Wireless Communication Circuits
✔
RS-422, RS-432 & RS-485
✔
Low Voltage ASICs
✔
Ethernet - 10/100 Base T
IEC COMPA
TIBILITY
(EN61000-4)
✔
61000-4-2 (ESD): Air - 15kV, Contact - 8kV
✔
61000-4-4 (EFT): 40A - 5/50ns
✔
61000-4-5 (Surge): 12A, 8/20µs - Level 1 (Line-Gnd) & Level 2 (Line-Line)
FEA
TURES
✔
500 Watts Peak Pulse Power per Line (tp=8/20µs)
✔
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
SO-16
CIRCUIT DIAGRAMS
UNIDIRECTIONAL
BIDIRECTIONAL
1
16
1
16
2
15
2
15
3
14
3
14
4
13
4
13
5
12
5
12
6
11
6
11
7
10
7
10
8
9
8
9
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SM16LC36C
DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25°C Unless Otherwise Specified
PARAMETER
Peak Pulse Power (t
p
= 8/20µs) - See Figure 1
Operating Temperature
Storage Temperature
Forward Voltage @ 50mA, 300µs - Square Wave (Note 1)
Note 1:
Only applies to unidirectional devices.
SYMBOL
P
PP
T
J
T
STG
V
F
VALUE
500
-55°C to 150°C
-55°C to 150°C
1.5
UNITS
Watts
°C
°C
Volts
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified
PART
NUMBER
(Notes 1 - 3)
RATED
STAND-OFF
VOLTAGE
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)
@ 8/20µs
V
C
@ I
PP
MAXIMUM
LEAKAGE
CURRENT
@V
WM
I
D
µA
MAXIMUM TEMPERATURE
CAPACITANCE COEFFICIENT
OF V
(BR)
@ 0V, 1 MHz
C
pF
V
WM
VOLTS
qV
(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
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.
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SM16LC36C
GRAPHS
FIGURE 1
PEAK PULSE POWER VS PULSE TIME
I
PP
- Peak Pulse Current - % of I
PP
10,000
P
PP
- Peak Pulse Power - Watts
120
100
80
60
40
20
0
t
f
FIGURE 2
PULSE WAVE FORM
Peak Value I
PP
TEST
WAVEFORM
PARAMETERS
t
f
= 8µs
t
d
= 20µs
1,000
500W 8/20µs Waveform
e
-t
100
t
d
= t I /2
PP
0
5
10
15
t - Time - µs
20
25
30
10
0.1
1
10
100
t
d
- Pulse Duration - µs
1,000
10,000
FIGURE 3
POWER DERATING CURVE
100
80
% Of Rated Power
FIGURE 4
OVERSHOOT & CLAMPING VOLTAGE FOR SM16LC05
40
Peak Pulse Power
8/20µs
5 Volts per Division
30
60
20
40
20
Average Power
0
0
25
50
75
100
125
T
L
- Lead Temperature - °C
150
10
0
ESD Test Pulse: 25 kilovolt, 1/30ns (waveform)
FIGURE 5
INSERTION LOSS - SM16LC12
FIGURE 6
RETURN LOSS - SM16LC12
20 db
10 db per Division
10 db per Division
20 db
Ref 0 db
Ref 0 db
-20 db
-20 db
-50 db
100 MHz per Division
-50 db
100 MHz per Division
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SM16LC36C
APPLICA
TION NOTES
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/
20µs 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.
TRANSCEIVER
D
LINE 1
LINE 2
LINE 3
D
LINE 4
LINE 5
R
LINE 6
LINE 7
R
LINE 8
16
15
14
13
12
11
10
9
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Circuit board layout is critical for Electromagnetic Compatibil-
ity (EMC) protection. The following guidelines are recom-
mended:
1
2
3
4
5
6
7
8
✔
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.
Figure 1. Birectional Common-Mode Protection
✔
✔
✔
✔
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SM16LC36C
PACKAGE OUTLINE & DIMENSIONS
PACKAGE OUTLINE
-A-
SO-16
16
9
-B- P
1
8
0.010” (0.25 MM)
M
B
M
8 PL
PACKAGE DIMENSIONS
DIM
MILLIMETERS
MIN
MAX
9.80
3.80
1.35
0.35
0.40
1.27 BSC
0.19
0.10
5.80
0.25
INCHES
MIN
MAX
G
C
0º - 7º
-T-
K
16 PL
0.010” (0.25 MM)
M
T B
S
M
R X 45º
D
A
S
F
J
A
B
C
D
F
G
J
K
P
R
0.386
10.00
0.393
0.150
4.00
0.157
0.054
1.75
0.068
0.014
0.49
0.019
0.016
1.25
0.049
1.27 BSC 0.05 BSC 0.05 BSC
0.008
0.25
0.009
0.004
0.25
0.009
0.229
6.20
0.244
0.010
0.50
0.019
MOUNTING PAD
0.050” TYP
0.030”
±
0.005”
0.160”
±
0.005”
0.245” MIN
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.
0.045”
±
0.005”
06007 Rev 1 - 11/01
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
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.
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
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