Silicon Protection Circuits

236

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Surface Mount Surgector

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

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

• Offered in the Most Common VDRM Voltage Types

• Low On-State Voltage

• Cross to Common Industry Types

• High Minimum Holding Current

Underwriters Laboratories.

Applications

• Secondary Protection for:

- DSL modem

- Set Top Box

- Telephone

- FAX

- Modem

- Line Cards

- SLIC

- TLPU Modules

• Alarm Systems

• CATV Lines

• Cable Modems

Symbol

PART

NUMBER

V

ATI

I

10 x 1000

µs Pulse

SGT0640SBT

SGT0720SBT

SGT2300SBT

SGT2900SBT

SGT3100SBT

SGT0640SCT

SGT0720SCT

SGT1300SCT

SGT2300SCT

SGT2900SCT

SGT3100SCT

SGT3500SCT

SGT1500SCT

B TYPES

C TYPES

77

88

260

330

350

77

88

160

260

330

350

400

180

50

50

50

50

50

100

100

100

100

100

100

100

100

(V)

(A)

I

2 x 10

µs Pulse

(A)

320

320

200

200

200

600

600

600

500

500

500

600

NOTE: T Suffix indicates Tape and Reel.

500

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