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Silicon Protection Circuits
Surface Mount SurgectorTM Transient Voltage Suppressors
®
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 Nano2® 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.
Features
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.
• Rated for Telecom Industry Transient Surge Levels:
- Telcordia (Bellcore) GR-1089
- ITU CCITT K.20/.21
- FCC PART 68
- UL 60950
Ordering Information
• Low Profile Package, Compatible with PCMCIA Cards, UL-94V-0 Listed
V
BO (MAX)
IPP(MAX)
10 x 1000µs Pulse
(A)
IPP(MAX)
2 x 10µs Pulse
(A)
• Offered in the Most Common V
• Low On-State Voltage
Voltage Types
DRM
PART
NUMBER
ATIBO=800MA
(V)
B TYPES
• Cross to Common Industry Types
• High Minimum Holding Current
SGT0640SBT
SGT0720SBT
SGT2300SBT
SGT2900SBT
SGT3100SBT
C TYPES
77
88
50
50
50
50
50
320
320
200
200
200
AGENCY APPROVALS: Recognized under the components program of
Underwriters Laboratories.
260
330
350
AGENCY FILE NUMBERS: UL E135010.
Applications
• Secondary Protection for:
SGT0640SCT
SGT0720SCT
SGT1300SCT
SGT1500SCT
77
88
100
100
100
100
600
600
600
600
- DSL modem
- Set Top Box
- Telephone
- FAX
160
180
- Modem
- Line Cards
- SLIC
SGT2300SCT
SGT2900SCT
260
330
100
100
500
500
SGT3100SCT
SGT3500SCT
350
400
100
100
500
500
- TLPU Modules
• Alarm Systems
NOTE: T Suffix indicates Tape and Reel.
• CATV Lines
• Cable Modems
Symbol
236
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