Littelfuse SR05 Series User Manual
Tvs diode arrays, Sot143, Lightning surge protection- sr05 series
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/24/13
TVS Diode Arrays
(SPA
®
Diodes)
Lightning Surge Protection- SR05 Series
Description
Features
Applications
The SR05 consists of four, low capacitance steering diodes
and a low voltage TVS diode that provide protection against
ESD and lightning surge events. Each channel or I/O pin
can safely absorb up to 25A (tp=8/20μs) and repetitive ESD
strikes above the maximum level (Level 4) specified in the
IEC 61000-4-2 international standard without performance
degradation.
The low loading capacitance makes it ideal for protecting
high-speed telecommunication data lines.
• ESD, IEC61000-4-2 ,
±30kV contact discharge,
±30kV air discharge
• EFT, IEC61000-4-4, 80A
(t
p
=5/50ns)
• Lightning protection,
IEC61000-4-5, 25A
(t
p
=8/20µs)
• Low capacitance of 6.0pF
(TYP) per I/O
• Low clamp voltage
• Small SOT143 (JEDEC TO-
253) packaging
• T1/E1 IC/Secondary
Protection
• Ethernet 10BaseT
• WAN/LAN Equipment
• ISDN S/T Interface
• Video Lines
• Microcontroller Input
Protection
Pinout
Functional Block Diagram
GND (PIN 1)
PIN 4
PIN 2
PIN 3
Life Support Note:
Not Intended for Use in Life Support or Life Saving Applications
The products shown herein are not designed for use in life sustaining or life
saving applications unless otherwise expressly indicated.
RoHS
Pb
GREEN
Application Example
SR05 Series 5V 25A Diode Array
SOT143
GND
I/O 1
Vcc
I/O 2
V
CC
I/O
I/O
1
2
3
4
The SR05 integrates a TVS Diode between the Vcc and Gnd
pins. This allows the array to protect the power supply
against ESD and lighting surges when these pins are both
connected in the application.
Additional Information