Littelfuse PGBSOT23 Series - Manual

Surface Mount Polymeric ESD Suppressors
PulseGuard ® Suppressors
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PGB Series SOT23 ESD Suppressor
Product Overview
PulseGuard ESD Suppressors help protect sensitive electronic
equipment against electrostatic discharge (ESD). They supplement the
on-chip protection of integrated circuitry and are best suited for low-
voltage, high-speed applications where low capacitance is important.
Data ports utilizing such high-speed protocols as USB 2.0, IEEE1394
and InfiniBand
SM can benefit from this new technology. PulseGuard
suppressors use polymer composite materials to suppress fast-rising
ESD transients (as specified in IEC 61000-4-2 and MIL-STD-883E).
Features
• Ultra-low capacitance
• Low leakage current
• Fast response time
• 2-lines of protection
• Bi-directional
• Withstands multiple ESD strikes
• Standard JEDEC SOT23 outline
• Compatible with pick-and-place processes
• Available in 3,000 piece reels
Typical Applications
• Servers
• Laptop/Desktop Computers
• Network Hardware
• Computer Peripherals
• Digital Cameras
• External Storage
Ordering Information
CATALOG NUMBER PIECES PER REEL
PGB002ST23WR 3,000
Design Consideration
Because of the fast rise-time of the ESD transient, placement of
PulseGuard suppressors is a key design consideration. To achieve
optimal ESD suppression, the devices should be placed on the circuit
board as close to the source of the ESD transient as possible. Install
PulseGuard suppressors directly behind the connector so that they are
the first board-level circuit component encountered by the ESD transient.
They are connected from signal/data line to ground.
Reflow
Solder
Note: For wave solder, increase the spacing
in both the horizontal and vertical dimensions by
0.254 (.010") where denoted by an asterisk (*)
2.24 (.088")
Reference Dimensions:
1.27
(.050")
1.27
(.050")
1.01 (.040")
2.032 (.080")*
0.51
(.020")
0.635
(.025")
2.29
(.090")
1.01 (.040")*
1.01 (.040")
0.076
(.003") MIN (TYP)
0.81
(.032") REF
1.01 (.040") 2.032
(.080")
2.997
(.118")
0.762
(.030")
Sn
Equivalent Circuit
3
2 1