Littelfuse SP2502L Series - Manual

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/24/13
TVS Diode Arrays
(SPA ® Diodes)
TVS Diode Arrays
(SPA ® Diodes)
Lightning Surge Protection - SP2502L Series
Description
Applications
The SP2502L provides overvoltage protection for
applications such as 10/100/1000 Base-T Ethernet and T3/
E3 interfaces. This device has a low capacitance of only
5pF making it suitable for PHY side Ethernet protection
and the capability to protect against both longitudinal and
differential transients. Furthermore, the SP2502L is rated
up to 100A (tp=2/10µs) making it suitable for line side
protection as well against lightning transients as defined
by GR-1089 (intra-building), ITU, YD/T, etc. The application
schematic provides the connection information for a PHY
side protection scheme of a single differential pair.
Features
• Lightning protection,
IEC61000-4-5, 75A
(8/20µs)
• Low clamping voltage
• Low insertion loss, log-
linear capacitance
• Combined longitudinal
and metallic protection
• Clamping speed of
nanoseconds
• SOIC-8 surface mount
package (JEDEC MS-012)
• UL 94V-0 epoxy molding
• RoHS compliant
• T1/E1 Line cards
• 10/100/1000 BaseT
Ethernet
• T3/E3 and DS3 Interfaces
• STS-1 Interfaces
Functional Block Diagram
Pinout
Note: Pinout diagrams above shown as device footprint on circuit board.
SP2502L Series 3.3V 75A Diode Array
SOIC-8 (Top View)
1
2
3
5 4
6
7
8
Pin 1 and 8
Pin 4 and 5
Pin 2, 3, 6,
and 7
Line out
Line out Line in
Line in
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.
Application Example
The schematic shows protection for a single differential
pair as part of a larger high-speed data interface such as
Ethernet. The SP2502L provides both metallic (differential)
and longitudinal (common mode) protection from lightning
induced surge events as specified by regulatory standards
such as Telcordia’s GR-1089 CORE and ITU K.20 and 21.
The SP2502L protects against both positive and negative
induced surge events while the TeleLink fuse provides
overcurrent protection for the long term 50/60 Hz power
fault events.
to chipset
(Ethernet PHY,
T3/E3 PHY, etc.) TeleLink (0461 1.25)
SP2502L
1
2
3
4
8
7
6
5
RoHS Pb GREEN
Additional Information
Datasheet Samples Resources