STMicroelectronics M4T28-BR12SH1, Battery Backup IC, 2.8 V 4-Pin, SNAPHAT
- RS Stock No.:
- 189-1239
- Mfr. Part No.:
- M4T28-BR12SH1
- Brand:
- STMicroelectronics
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Subtotal (1 unit)*
£7.57
(exc. VAT)
£9.08
(inc. VAT)
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In Stock
- 209 unit(s) ready to ship
- Plus 207 unit(s) ready to ship from another location
- Plus 105 unit(s) shipping from 20 October 2025
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Units | Per unit |
|---|---|
| 1 - 4 | £7.57 |
| 5 - 9 | £7.12 |
| 10 - 24 | £6.75 |
| 25 - 49 | £6.37 |
| 50 + | £6.07 |
*price indicative
- RS Stock No.:
- 189-1239
- Mfr. Part No.:
- M4T28-BR12SH1
- Brand:
- STMicroelectronics
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | STMicroelectronics | |
| Battery Type | Lithium-CF | |
| Mounting Type | Through Hole | |
| IC Type | Battery Backup IC | |
| Package Type | SNAPHAT | |
| 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 | |
Select all | ||
|---|---|---|
Brand STMicroelectronics | ||
Battery Type Lithium-CF | ||
Mounting Type Through Hole | ||
IC Type Battery Backup IC | ||
Package Type SNAPHAT | ||
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.
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