Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page
1
Copyright 2000
MSC1685.PDF 02-22 2000 REV B
WWW.
Microsemi
.COM
SMS03C thru SMS24C
4 LINE BIDIRECTIONAL TVSarray ™
PRODUCT PREVIEW
SCOTTSDALE DIVISION
DESCRIPTION
This 6 pin 4 line bi-directional array is designed for use in applications where
protection is required at the board level from voltage transients caused by
electrostatic discharge (ESD) as defined by IEC 61000-4-2, electrical fast
transients (EFT) per IEC 61000-4-4 and effects of secondary lighting.
These arrays are used to protect 4 discrete lines utilizing pins (1,3,4,6) with a
common (pin 5) configuration. The SMS03C thru SMS24C product provides
board level protection from static electricity and other induced voltage surges that
can damage sensitive circuitry.
These Transient Voltage Suppressor (TVS) diode arrays protect 3.0/3.3 volt
components such as DRAM’s SRAM’s CMOS, HCMOS, HSIC, and low voltage
interfaces up to 24 volts. Because of the physical size, weight and protection
capabilities, this product is ideal for use in but not limited to miniaturized
electronic equipment such as hand held instruments, computers, computer
peripherals and cell phones.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless otherwise specified
STAND
OFF
VOLTAGE
VWM
VOLTS
BREAKDOWN
VOLTAGE
VBR
@1 mA
VOLTS
CLAMPING
VOLTAGE
VC
@ 1 Amp
(FIGURE 2)
VOLTS
CLAMPING
VOLTAGE
VC
@ 5 Amp
(FIGURE 2)
VOLTS
STANDBY
CURRENT
ID
@ VWM
µA
CAPACITANCE
(f=1 MHz)
@0V
C
pF
TEMPERATURE
COEFFICIENT
OF VBR
áVBR
mV/°C
PART
NUMBER DEVICE
MARKING
MAX MIN MAX MAX MAX TYP MAX
SMS03C S3C 3.3 4 7.5 11.5 100 100 -3
SMS05C S5C 5.0 6.0 11 14.5 10 75 3
SMS12C S12C 12.0 13.3 21 27 1 35 10
SMS15C S15C 15.0 16.7 26 33 1 30 13
SMS24C S24C 24.0 26.7 45 56* 1 20 30
* CLAMPING VOLTAGE @3.6 Amps
Note: Transient Voltage Suppressor (TVS) product is normally selected based on its stand off voltage VWM. Product selected
voltage should be equal to or greater than the continuous peak operating voltage of the circuit to be protected.
TVSarray™ SERIES
APPLICATIONS
• EIA-RS232 data rates
19.6kbs
• EIA-RS422 data rates
10Mbs
• EIA-RS423 data rates
100kbs
FEATURES
• Protects 3.0/3.3 up through 24 volt components
• Protects 4 bi-directional lines
• Provides electrically isolated protection
• SOT 23-6L Packaging
MAXIMUM RATINGS
• Operating Temperature: -55°C to +150°C
• Storage Temperature: -55°C to +150°C
• Peak Pulse power 200 watts (8/20 µs Figure 1)
• SOT 23-6L Packaging
MECHANICAL
• Molded SOT23-6L Surface Mount
• Weight .014 grams (approximate)
• Body Marked with device number
• Pin one defined by DOT on top of package
PACKAGING
• Tape & Reel per EIA Standard 481
• 3,000 pieces per 7 inch
SMS03C thru SMS24C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page
2
Copyright 2000
MSC1685.PDF 02-22 2000 REV B
WWW.
Microsemi
.COM
SMS03C thru SMS24C
4 LINE BIDIRECTIONAL TVSarray ™
PRODUCT PREVIEW
SCOTTSDALE DIVISION
SYMBOLS & DEFINITIONS
Symbol DEFINITION
VWM Rated stand off voltage: Maximum dc voltage that can be applied over the operating temperature range. Vwm
must be selected to be equal or be greater than the operating voltage of the line to be protected
VBR Minimum Breakdown Voltage: The minimum voltage the device will exhibit at a specified current
VC Clamping Voltage: Maximum clamping voltage across the TVS device when subjected to a given current at a
pulse time of 20 µs.
ID Standby Current: Leakage current at VWM.
C Capacitance: Capacitance of the TVS as defined @ 0 volts at a frequency of 1 MHz and stated in Pico Farads.
GRAPHS
PACKAGING AND SCHEMATIC
8/20µs 200W Pulse
10
1
.01
0.001
GRAPHS PACKAGE
DATA
.1 1 10 100 1000
FIGURE 1
Peak Pulse Power Vs Pulse Time t=µsec
FIGURE 2
Pulse Wave Form
Ppp Peak Pulse Power (Kw)
DIMENSIONS MILLIMETERS DIMENSIONS INCHES
DIM MIN NOM MAX MIN NOM MAX
A 2.70 2.90 3.10 .106 .114 .127
A1 0.00 0.10 .000 .004
A2 1.00 1.10 1.30 .039 .043 .051
B 0.35 0.40 0.50 .014 .016 .020
C 0.10 0.15 0.25 .004 .006 .010
D 1.50 1.60 1.80 .059 .063 .071
E 1.70 1.90 2.10 .067 .075 .083
F 2.60 2.80 3.00 .102 .110 .118
G 0.20 .008
