M4T32-BR12SH6

Overview

The M4T32-BR12SH6 is a detachable SNAPHAT top component designed for STMicroelectronics serial real-time clock and non-volatile TIMEKEEPER surface-mount SOIC packages. It integrates a 120 mAh lithium coin cell battery with a crystal rated for an extended temperature range of -40 to +85 °C. This two-piece solution allows the power source to be snapped onto the printed circuit board after the SOIC package has been surface-mounted, thereby preventing thermal damage to the battery and crystal during reflow soldering.

Feature Summary

• Integrates a 120 mAh lithium battery with a wide-temperature crystal in a single detachable unit
• Enables post-reflow assembly to protect sensitive components from high soldering temperatures
• Features keyed insertion design to ensure correct orientation during installation

Applications

• Battery backup for serial real-time clocks
• Power supply for non-volatile TIMEKEEPER memory devices
• Backup power for supervisor devices in industrial environments

Procurement Notes

Verify that the specific suffix '6' denotes the -40 to +85 °C crystal variant, as other variants may lack this extended temperature rating. Confirm compatibility with the target 28-pin or 44-pin SNAPHAT SOIC package before procurement. Ensure the ordering documentation explicitly references the M4T32-BR12SH6 part number to distinguish it from standard capacity options.

Selection Notes

Select this component when an extended operating temperature range is required for the integrated crystal oscillator. The 120 mAh capacity provides longer backup duration compared to lower-capacity alternatives. It is suitable for applications where the main device must withstand surface-mount reflow processes without exposing the battery to heat.

Part Context

This part belongs to the SNAPHAT family of detachable power sources for ST's TIMEKEEPER and serial RTC products. It complements the M4T32-BR12SH by offering a wider temperature range for the internal crystal, addressing environmental constraints in harsher industrial settings while maintaining the same mechanical interface.

Replacement Considerations

The M4T32-BR12SH serves as a functional substitute but lacks the specified -40 to +85 °C crystal rating. Ensure any replacement maintains the 120 mAh capacity and keyed mechanical design to fit the target SOIC package securely.