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STMicro M4T32-BR12SH6 Clock/Timing - IC Batteries

04 May,2023
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M4T32-BR12SH6 Description

STMicro M4T32-BR12SH6 is a battery backup power supply device for real-time clock, non-volatile TIMEKEEPER®, and supervisor devices. It comes in a 28- or 44-pin SNAPHAT® SOIC package, which includes a removable battery that provides backup power. The device is designed to avoid the heat associated with the surface-mount process and snaps directly onto the surface-mounted SNAPHAT SOIC. The device has a choice of battery capacities, with the M4T32-BR12SH6 model having a capacity of 120 mAh.

 

 

 

 

 

M4T32-BR12SH6 Features

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

 

M4T32-BR12SH6 Logic Diagram

 

Mechanical information

Electrical connection to the SOIC is made through four pins that connect to the four press fitted sockets at each end of the SOIC. Critical contact points between the pins and sockets are gold-plated to resist oxidation. Internally, each socket contains six independent contact fingers to form redundant connections between the two components. These sockets were designed with high point contact force to provide the lowest possible contact resistance. The SNAPHAT® top also incorporates four molded-in retaining clips which hold onto the ends of the SOIC ensuring mechanical and electrical connection even under severe mechanical shock and vibration. The combined SOIC and SNAPHAT assembly can sustain shock levels in excess of 100 g without separating. This package also passes variable frequency testing in accordance with MIL-STD-883, method 2007.2, condition A.

Figure 2 illustrates the affect of repeated insertion and extraction of the SNAPHAT top to the SOIC. The force required to extract the SNAPHAT, and then to re-insert it, reduces each time. After four or five extractions, the reduction starts to become unnoticeable and the force required remains at a fairly constant figure. Typically, though, the SNAPHAT will only needto be extracted and re-inserted once in its lifetime.

 

SNAPHAT® insertion/extraction forces

M4T32-BR12SH6 Product Parameter

Manufacturer

STMicroelectronics

Manufacturer's Part #

M4T32-BR12SH6

Categories

Integrated Circuits (ICs)

Sub-Categories

Clock/Timing - IC Batteries

Series

Timekeeper®, Snaphat®

Part Status

Active

Type

Battery and Crystal

Battery Chemistry

Lithium

Capacity

120mAh

Voltage - Rated

2.8V

Frequency

32.768kHz

Load Capacitance

12.5pF

Operating Temperature

-40°C~85°C TA

Factory Lead Time

12 Weeks

Lifecycle Status

ACTIVE (Last Updated: 7 months ago)

Contact Plating

Gold

Mount

Through Hole

Package / Case

SOIC

Number of Pins

4

Weight

1.8g

Packaging

Bulk

Number of Terminations

4

Termination

SMD/SMT

Technology

CMOS

Terminal Position

DUAL

Terminal Form

PIN/PEG

Peak Reflow Temperature (Cel)

260

Supply Voltage

2.8V

Depth

21.84mm

Reflow Temperature-Max (s)

40

Base Part Number

M4T32

Pin Count

4

Output Voltage

2.8V

Lead Length

2.29mm

Operating Supply Voltage

3V

ESR (Equivalent Series Resistance)

60kOhm

Supply Voltage-Max (Vsup)

3V

Lead Diameter

560 μm

Frequency Tolerance

0.0035%

Number of Timers

1

Rechargeability

Non-Rechargeable

Ambient Temperature Range High

85°C

Height

8.51mm

Length

21.84mm

Width

18.03mm

Radiation Hardening

No

RoHS Status

ROHS3 Compliant

Lead Free

Lead Free

 

M4T32-BR12SH6 Manufacturer

STMicroelectronics is the largest European semiconductor contract manufacturing and design company. The company provides a wide range of semiconductor products including microcontrollers, analog devices, digital signal processors, sensors, power semiconductors, and wireless communication solutions. Its customers come from various industries including automotive, consumer electronics, industrial automation, and telecommunications.

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