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 : IR = 2 µA max
■
Holding current: IH = 150 mA min
■
Repetitive peak pulse current :
IPP = 50 A (10/1000 µs)
SMB
SMA
(JEDEC DO-214AC) (JEDEC DO-214AA)
SMTPA
SMP50
Main applications
Telecommunication equipment such as:
■
Analog and digital line cards (xDSL, T1/E1,
ISDN, ...)
■
Terminals (phone, fax, modem, ...) and central
office equipment
Description
DO-15
TPA
Order codes
Part Number
These Trisil series have been designed to protect
telecommunication equipment against lightning
and transient induced by AC power lines.
SMP50-xxx
TPAxxx
They are available in SMA, SMB and DO-15
packages.
Benefits
Marking
See Ordering Information
on page 9
SMTPAxxx
Schematic Diagram
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
June 2007
Rev 3
1/11
www.st.com
11
