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Silicon Protection Circuits
Surface Mount Surgector TM Transient Voltage Suppressors
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Surgector Thyristors For Telecom Protection
Designed to suppress lightning and other transients, Surgector suppressors
are primarily intended for operation on the telephone line “ tip and ring ”
environment in order to protect telecommunications CPE and COE
products in conjunction with the Littelfuse 461 series Telecom Nano 2 ? fuse.
These devices provide secondary protection for telecommunication
equipment such as telephone, MODEM, line card and other devices
subject to damage from transient over voltage events. Surgectors can be an
integral part of a Telephone Line Protector Unit, meeting AC Power Cross
criteria when used in association with properly selected resistor/ PTC/ fuse
combinations such as the Littelfuse 461 series fuse. Littelfuse Surface
Mount Surgectors are manufactured using a silicon thyristor technology,
offering bidirectional voltage clamping for transients of either polarity
?
from a single chip.
The Surgector devices described in this data sheet are manufactured
with the DO-214AA low profile case style and are second source
equivalent parts to industry “ SIDAC ” types. Surface Mount Surgector
Suppressors are supplied in embossed carrier tape on 330mm
(13in) reels.
Ordering Information
Features
? Rated for Telecom Industry Transient Surge Levels:
- Telcordia (Bellcore) GR-1089
- ITU CCITT K.20/.21
- FCC PART 68
- UL 60950
? Low Profile Package, Compatible with PCMCIA Cards, UL-94V-0 Listed
PART
NUMBER
V BO (MAX)
ATI BO =800MA
(V)
I PP (MAX)
10 x 1000 μ s Pulse
(A)
I PP (MAX)
2 x 10 μ s Pulse
(A)
? Offered in the Most Common VDRM Voltage Types
? Low On-State Voltage
B TYPES
? Cross to Common Industry Types
SGT0640SBT
SGT0720SBT
SGT2300SBT
SGT2900SBT
SGT3100SBT
77
88
260
330
350
50
50
50
50
50
320
320
200
200
200
? High Minimum Holding Current
AGENCY APPROVALS: Recognized under the components program of
Underwriters Laboratories.
AGENCY FILE NUMBERS: UL E135010.
C TYPES
Applications
SGT0640SCT
SGT0720SCT
SGT1300SCT
SGT1500SCT
SGT2300SCT
SGT2900SCT
SGT3100SCT
SGT3500SCT
77
88
160
180
260
330
350
400
100
100
100
100
100
100
100
100
600
600
600
600
500
500
500
500
? Secondary Protection for:
- DSL modem
- Set Top Box
- Telephone
- FAX
- Modem
- Line Cards
- SLIC
- TLPU Modules
? Alarm Systems
NOTE: T Suf ? x indicates Tape and Reel.
236
? CATV Lines
? Cable Modems
Symbol
w w w. l i t t e l f u s e . c o m
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