Datasheet

June 2007 Rev 3 1/11
11
SMP50 / SMTPA / TPA
Trisil™ for telecom equipment protection
Features
Bidirectional crowbar protection
Voltage range from 62 V to 320 V
Low capacitance from 12 pF to 20 pF @ 50 V
Low leakage current : I
R
= 2 µA max
Holding current: I
H
= 150 mA min
Repetitive peak pulse current :
I
PP
= 50 A (10/1000 µs)
Main applications
Telecommunication equipment such as:
Analog and digital line cards (xDSL, T1/E1,
ISDN, ...)
Terminals (phone, fax, modem, ...) and central
office equipment
Description
These Trisil series have been designed to protect
telecommunication equipment against lightning
and transient induced by AC power lines.
They are available in SMA, SMB and DO-15
packages.
Benefits
Trisils are not subject to ageing and provide a fail
safe mode in short circuit for a better protection.
They are used to help equipment to meet various
standards such as UL1950, IEC950 / CSA C22.2,
UL1459 and FCC part 68.
Trisils have UL94 V0 approved resin.
SMA and SMB packages are JEDEC registered
(DO-214AC and DO-214AA).
Trisils are UL497B approved (file: E136224).
TM: TRISIL is a trademark of STMicroelectronics
Order codes
Schematic Diagram
Part Number Marking
SMP50-xxx
See Ordering Information
on page 9
TPAxxx
SMTPAxxx
SMA
(JEDEC DO-214AC)
SMP50
SMB
(JEDEC DO-214AA)
SMTPA
DO-15
TPA
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Summary of content (11 pages)