4 LINE TVSarray ™
SMDA/B
Microsemi
Scottsdale Division
Page 1
Copyright © 2005
11-11-2005 REV R
WWW.Microsemi .COM
SCOTTSDALE DIVISION
SMDA03 thru SMDA24C, e3
and SMDB03 thru SMDB24C, e3
DESCRIPTION APPEARANCE
This TRANSIENT VOLTAGE SUPPRESSOR (TVS) array is packaged in an SO-8
configuration giving protection to 4 unidirectional or bi-directional data or interface
lines. It is designed for use in applications where protection is required at the board
level from voltage transients caused by electrostatic discharge (ESD) as defined in
IEC 61000-4-2, electrical fast transients (EFT) per IEC 61000-4-4 and effects of
secondary lightning. These TVS arrays have peak pulse power ratings of 300 watts
(SMDA) and 500 watts (SMDB) for an 8/20 µsec pulse. They are suitable for
protection of sensitive circuitry consisting of TTL, CMOS, DRAM’s, SRAM’s,
HCMOS, HSIC and low-voltage interfaces from 3.3 volts to 24 volts
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES PACKAGING
• Protects 3.0/3.3 volt up to 24 volt components
• Protects 4 unidirectional or bidirectional lines
• Provides electrically-isolated protection
• RoHS Compliant devices available by adding “e3” suffix
• Tape & Reel per EIA Standard 481
• 13 inch reel; 2,500 pieces (STANDARD)
• Carrier tubes; 95 pcs (OPTIONAL)
MAXIMUM RAT ING S MECHANICAL
• Operating Temperature: -55°C to +150°C
• Storage Temperature: -55°C to +150°C
• SMDA Peak Pulse Power: 300 watts (Fig. 1 and 2)
• SMDB Peak Pulse Power: 500 watts (Fig. 1 and 2)
• Pulse Repetition Rate: <.01%
• CASE: Void-free transfer molded thermosetting epoxy
compound meeting UL 94V-0 flammability classification
• TERMINALS: Tin-Lead or RoHS Compliant annealed
matte-Tin plating solderable per MIL-STD-750 method
2026
• WEIGHT: 0.066 grams (approximate)
• MARKING: MSC Logo, device marking code*, date code
• Pin #1 defined by dot on top of package
ELECTRICAL CHARACTERISTICS PER LINE @ 25oC Unless otherwise specified
STAND OFF
VOLTAGE
VWM
VOLTS
BREAKDOWN
VOLTAGE
VBR
IBR = 1 mA
VOLTS
CLAMPING
VOLTAGE
VC
IPP = 1 A
(Figure 2)
VOLTS
CLAMPING
VOLTAGE
VC
IPP = 5 A
(Figure 2)
VOLTS
STANDBY
(LEAKAGE)
CURRENT
ID
@VWM
µA
CAPACITANCE
f =1 MHz
C
@0V
pF
TEMPERATURE
COEFFICIENT
of VBR
αVBR
mV/°C
PART
NUMBER
DEVICE
MARKING
CODE *
MAX MIN MAX MAX MAX TYP TYP
SMDA03 SDK 3.3 4 7 9 200 600 -3
SMDA03C SDL 3.3 4 7 9 400 300 -5
SMDB03 PDK 3.3 4 7 9 200 600 -3
SMDB03C PDL 3.3 4 7 9 400 300 -5
SMDA05 SDA 5.0 6 9.8 11 20 400 3
SMDA05C SDB 5.0 6 9.8 11 40 200 1
SMDB05 PDA 5.0 6 9.8 11 20 400 3
SMDB05C PDB 5.0 6 9.8 11 40 200 1
SMDA12 SDC 12.0 13.3 19 24 1 185 10
SMDA12C SDD 12.0 13.3 19 24 1 95 8
SMDB12 PDC 12.0 13.3 19 24 1 185 10
SMDB12C PDD 12.0 13.3 19 24 1 95 8
SMDA15 SDE 15.0 16.7 24 30 1 140 13
SMDA15C SDF 15.0 16.7 24 30 1 70 11
SMDB15 PDE 15.0 16.7 24 30 1 140 13
SMDB15C PDF 15.0 16.7 24 30 1 70 11
SMDA24 SDG 24.0 26.7 43 55 1 90 30
SMDA24C SDH 24.0 26.7 43 55 1 45 28
SMDB24 PDG 24.0 26.7 43 55 1 90 30
SMDB24C PDH 24.0 26.7 43 55 1 45 28
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. Part numbers with a C suffix are bi-directional devices.
* Device marking has an e3 suffix added for the RoHS Compliant options, e.g. SDKe3, SDLe3, SDCe3, SDEe3, PDHe3, etc.
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
4 LINE TVSarray ™
SMDA/B
Microsemi
Scottsdale Division
Page 2
Copyright © 2005
11-11-2005 REV R
WWW.Microsemi .COM
SCOTTSDALE DIVISION
SMDA03 thru SMDA24C, e3
and SMDB03 thru SMDB24C, e3
SYMBOLS & DEFINITI ONS
Symbol Definition
VWM 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: Minimum voltage the device will exhibit at a specified current
VCClamping Voltage: Maximum clamping voltage across the TVS device when subjected to a given current at a
pulse time of 20 µs.
IDStandby Current: Leakage current at VWM.
C Capacitance: Capacitance of the TVS as defined @ 0 volts at a frequency of 1 MHz and stated in picofarads.
GRAPHS
10.0
1.0
0.1
0.01
Figure 1 Figure 2
Peak Pulse Power vs Pulse Time Pulse Wave Form
OUTLINE AND SCHEMATIC
PAD LAYOUT
INCHES MILLIMETERS
DIM MIN MAX MIN MAX
A 0.188 0.197 4.77 5.00
B 0.150 0.158 3.381 4.01
C 0.053 0.069 1.35 1.75
D 0.011 0.021 0.28 0.53
F 0.016 0.050 0.41 1.27
G 0.050 BSC 1.27 BSC
J 0.006 0.010 0.15 0.25
K 0.005 0.008 0.10 0.20
L 0.189 0.206 4.80 5.23
P 0.228 0.244 5.79 6.19
8
7
6
5
2
4
3
1 8
7
6
5
2
4
3
1
Unidirectional Bidirectional
OUTLINE SCHEMATIC
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
