BS1220 SMD is the single cell holder, designed for lithium button cell CR1220 and ML1220, easy battery replacement.
Wide usage in memory back-up systems like CMOS,desktop and laptop applications,industrial and commercial security and alarm systems, communications power sources and main boards.
Operating temperature range:-55 degree C to 85 degree C
For your reference models: Keystone 1056, BK-5058
