Catalog > Semiconductors > IC - Voltage Regulators M4T28-BR12SH1 Battery Backup IC Lithium Battery Backup IC Lithium 2,8V 4 Pin SOIC Part No: M4T28-BR12SH1 201.25 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Additional Information Notes SNAPHAT® Lithium Coin Cell Battery with Crystal, STMicroelectronics These Battery and Crystal Option devices are detachable lithium power sources housed in special top called SNAPHAT®. The SNAPHAT is snapped on the top of the surface-mounted IC in the Printed Circuit board. Also compatible with the non-volatile TIMEKEEPER® package by STMicroelectronics. SRAM & NVRAM Accessories