M4T28-BR12SH1 CONTAINS LITHIUM CELL

Description

The M4T28-BR12SH1 is a specialized lithium SNAPHAT battery module with an integrated crystal oscillator, manufactured by STMicroelectronics. It is designed for real-time clock (RTC) and TIMEKEEPER® IC systems, where it provides backup power and clock stability for memory and timing functions.

Unlike a normal coin cell battery, this is a detachable top-mounted module that snaps onto compatible IC packages after PCB soldering. It is widely used in industrial electronics, embedded systems, and data logging devices.

Key Features

• Integrated lithium battery + 32.768 kHz crystal module
• Designed for RTC and TIMEKEEPER® memory backup systems
• Snap-on SNAPHAT® removable design for easy replacement
• Prevents heat damage during the PCB soldering process
• Stable long-term clock operation for embedded systems
• Keyed design ensures correct mounting orientation
• Industrial-grade reliability for continuous operation
• RoHS-compliant and service-friendly structure
• Supports easy battery replacement without board redesign

Specifications

1. Product Type: Lithium Battery + Crystal Module (SNAPHAT)
2. Model: M4T28-BR12SH1
3. Manufacturer: STMicroelectronics
4. Battery Chemistry: Lithium (BR series coin cell inside module)
5. Rated Voltage: 2.8V
6. Capacity: 48 mAh
7. Crystal Frequency: 32.768 kHz
8. Load Capacitance: 12.5 pF
9. Operating Temperature: 0°C to 70°C
10. Package Type: SNAPHAT (4-pin compatibility module)
11. Mounting Type: Through-hole / Snap-on top module
12. Application: RTC backup, embedded systems, industrial memory retention, clock/timekeeping ICs