Littelfuse B61089BDR Single-Port SLIC Protectors

Littelfuse B61089BDR Single-Port Subscriber Line Interface Circuit (SLIC) Protectors are battery tracking protectors that protect the SLIC against lightning-induced surges and power fault events. Littelfuse B61089BDR SLIC Protectors consist of a pair of identical protection thyristors integrated with two anti-series diodes. These gated thyristor protectors have a crowbarring function, providing tracking battery protection down to -170V. The anti-series diode provides protection of positive surge events by diverting the surge energy to the ground. B61089BDR has a robust surge current capability, helping telecom and datacom products comply with different surge standards, such as Telcordia GR-1089, ITU-T K.20, K.21, and YD/T950.

Features

Single port negative voltage tracking programmable component
Supports battery voltages down to -170V
5mA maximum gate triggering current
Fails in short circuit condition when surged in excess of ratings to protect all downstream equipment
Surge capability does not degrade after multiple surge events within its ratings

-150mA minimum high holding current
Specified 2/10 limiting voltage
Integrated diodes for positive surge protection
MSL Level 1 – unlimited
RoHS compliant and lead-free

Applications

Wireless in the Local Loop (WLL)
Voice applications requiring regenerated POTS
VoIP
PBX

FXS
Digital Pair Gain (DPG) systems and Digital Loop Carrier (DLC) systems
Small Office Home Office (SOHO)

Littelfuse B61089BDR Single-Port SLIC Protectors

Features

Applications

Schematic

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