STMicroelectronics M4T28-BR12SH1, Battery Backup IC, 2.8 V 4-Pin, SNAPHAT

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Subtotal (1 tube of 23 units)*

£144.739

(exc. VAT)

£173.696

(inc. VAT)

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  • 115 unit(s) ready to ship
  • Plus 69 unit(s) ready to ship from another location
  • Plus 161 unit(s) shipping from 31 October 2025
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Per unit
Per Tube*
23 - 23£6.293£144.74
46 - 69£6.123£140.83
92 - 207£5.962£137.13
230 - 437£5.809£133.61
460 +£5.664£130.27

*price indicative

RS Stock No.:
920-6358
Mfr. Part No.:
M4T28-BR12SH1
Brand:
STMicroelectronics
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Brand

STMicroelectronics

Battery Type

Lithium-CF

Mounting Type

Through Hole

Package Type

SNAPHAT

IC Type

Battery Backup IC

Pin Count

4

Typical Operating Supply Voltage

2.8 V

Dimensions

21.84 x 14.99 x 7.75mm

Length

21.84mm

Width

14.99mm

Height

7.75mm

Maximum Operating Temperature

+70 °C

Minimum Operating Temperature

0 °C

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.

M4Txx-BR12SH SNAPHAT


The M4Txx-BR12SH SNAPHAT®top is a detachable lithium power source for ST’s serial real-time clock and non-volatile TIMEKEEPER®surface-mount SOIC package (28- and 44-pin).

The SNAPHAT top contains both the battery and crystal and is designed to be “snapped on” after the SOIC is surface mounted on the PC board. Thus the two-piece solution prevents the battery and crystal from being exposed to the high temperatures of the surface-mount process.

Features and Benefits


  • Provides battery backup power for serial real-time clock, non-volatile TIMEKEEPER®and supervisor devices in the 28- or 44-pin SNAPHAT®SOIC package

  • Removable battery avoids heat associated with surface-mount process

  • Snaps directly onto surface-mounted SNAPHAT SOIC

  • Choice of battery capacities:

- M4T28-BR12SH = 48 mAh
- M4T32-BR12SH = 120 mAh
  • Keyed insertion to ensure proper assembly

  • Removable for replacement and proper disposal

  • Pb-free package

  • Available in Ecopack®packages, tubes

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