| Parte NO. | Fabricante | Descripción | Serie | Caja de paquete |
|---|---|---|---|---|
| M4T28-BR12SH1 | STMicroelectronics | SNAPHAT BATT/CRYSTAL FOR SOIC | Timekeeper®, Snaphat® | |
| M4T32-BR12SH1 | STMicroelectronics | SNAPHAT BATT/CRYSTAL FOR SOIC | Timekeeper®, Snaphat® | |
| M4T32-BR12SH6 | STMicroelectronics | SNAPHAT BATT/CRYSTAL FOR SOIC | Timekeeper®, Snaphat® |