SMP50 / SMTPA / TPA
Trisil™ for telecom equipment protection
Features
■ Bidirectional crowbar protection ■ Voltage rang...
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)
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).
SMA
SMB
(JEDEC DO-214AC) (JEDEC DO-214AA)
SMP50
SMTPA
DO-15 TPA
Order codes
Part Number SMP50-xxx
TPAxxx SMTPAxxx
Marking
See Ordering Information on page 9
Schematic Diagram
TM: TRISIL is a trademark of STMicroelectronics
June 2007
Rev 3
1/11
www.st.com
11
Characteristics
1 Characteristics
SMP50 / SMTPA / TPA
Table 1. Compliant with the following standards
Standard
Peak Surge
Voltage (V)
Waveform Vol...