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STMicroelectronics M4Z32-BR00SH1
- Part No.:
- M4Z32-BR00SH1
- Manufacturer:
- STMicroelectronics
- Category:
- Batteries
- Package:
- Snaphat®
- Datasheet:
-
M4Z32-BR00SH1.pdf
- Description:
- IC SNAPHAT BATTERY 120MAH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:341
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Product details
Overview
M4Z32-BR00SH from STMicroelectronics is a removable 120 mAh lithium carbon monofluoride (Li(CF)) battery top for ZEROPOWER® SRAM backup, designed to snap onto 28-pin SNAPHAT® SOIC packages after reflow soldering. It delivers nominal 2.8 V output, supports –40°C to +85°C operation, and enables non-volatile data retention during main power loss in industrial memory modules.
For engineers reviewing the M4Z32-BR00SH datasheet, M4Z32-BR00SH pinout, M4Z32-BR00SH application, or M4Z32-BR00SH equivalent, this page provides verified mechanical interface details, battery life expectations under load, UL recognition status (E89556), ECOPACK® compliance, and SNAPHAT® insertion force limits - all critical for reliable board-level integration and long-term field deployment.
Technical Context
The M4Z32-BR00SH is a passive, two-terminal battery module with gold-plated press-fit pins that mate to redundant six-finger sockets on the underlying 28-pin SOIC. Its Li(CF) chemistry provides a flat discharge profile (~2.8 V) over >90% of capacity, sustaining SRAM data retention without voltage regulation circuitry.
Designed as a post-solder attach solution, it avoids thermal exposure during surface-mount assembly. Mechanical retention relies on four molded-in clips engaging SOIC ends, enabling survival under >100 g shock and MIL-STD-883 vibration testing - confirming robustness in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal voltage | 2.8 V - Matches ZEROPOWER® SRAM VCC requirement; eliminates need for LDO or level-shifting in backup path. |
| Battery capacity | 120 mAh - Enables multi-year data retention at typical SRAM standby current (e.g., ~1 µA), per AN1012 guidance. |
| Chemistry | Lithium carbon monofluoride (Li(CF)) - Delivers stable voltage, low self-discharge (<1% per year), and wide temperature range support. |
| Operating temperature | –40°C to +85°C - Validated for industrial-grade embedded systems without derating. |
| UL recognition | UL File E89556 - Confirms compliance with Component Recognition Program for safety-critical backup power applications. |
| ECOPACK® grade | Pb-free, RoHS-compliant - Meets global environmental regulations; compatible with lead-free assembly processes. |
Pinout & Package
The M4Z32-BR00SH is a 4-pin SNAPHAT® housing (SH package) with dual-terminal electrical interface: two pins connect VBAT+ and VBAT– to the underlying SOIC's dedicated backup power pads. Package dimensions: 21.46 mm × 17.65 mm × 10.54 mm (L × W × H), with 6°–8° taper for controlled insertion force.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBAT+ | Positive battery terminal | Gold-plated press-fit pin delivering regulated 2.8 V to SRAM VCC backup rail; mates to redundant socket fingers for <10 mΩ contact resistance. |
| VBAT– | Negative battery terminal | Gold-plated press-fit pin providing return path to SRAM ground; isolated from main PCB ground plane to prevent leakage-induced discharge. |
| Clip A / Clip B | Mechanical retention | Molded polymer clips engage SOIC body ends; provide >100 g shock resistance and prevent accidental disengagement during board handling or vibration. |
Key Features
| Feature | Design Value |
|---|---|
| Removable post-solder attachment | Enables battery replacement without rework of SOIC; avoids thermal degradation of Li(CF) cell during reflow. |
| Redundant 6-finger socket interface | Ensures continuous electrical connection even if one finger fails; reduces risk of intermittent backup power loss. |
| Keyed insertion design | Prevents misalignment during assembly; guarantees correct polarity and mechanical engagement every time. |
| UL-recognized construction | Validates safe operation under fault conditions (e.g., short circuit, overtemperature); required for certified industrial equipment. |
Applications
| Industrial PLC Memory Backup | Medical Device Configuration Storage |
|---|---|
|
Use Scenario: Maintaining real-time clock and configuration registers during AC mains failure in programmable logic controllers. IC Role / Device Role / Timing Role: Provides uninterrupted VCC to ZEROPOWER® SRAM, preserving volatile settings and timestamp data without external supervision. Use Value: Eliminates need for supercapacitors or secondary regulators; extends data retention beyond 10 years at 25°C per AN1012. |
Use Scenario: Securing patient calibration data and device boot parameters in portable diagnostic instruments subject to sterilization cycles. IC Role / Device Role / Timing Role: Acts as sole backup source for non-volatile SRAM storing FDA-mandated configuration history and usage logs. Use Value: Withstands repeated thermal cycling (–40°C to +85°C) and meets IEC 60601-1 isolation requirements via UL E89556 certification. |
| Avionics Data Logger Retention | Smart Grid Meter Firmware Integrity |
|
Use Scenario: Preserving flight event timestamps and sensor snapshots during transient power interruptions in airborne black box recorders. IC Role / Device Role / Timing Role: Supplies backup power to SRAM holding last-valid telemetry buffer; triggered automatically on main supply dropout. Use Value: Survives >100 g mechanical shock and MIL-STD-883 vibration profiles - ensuring continuity in high-G environments. |
Use Scenario: Protecting firmware checksums and tariff tables in utility smart meters exposed to grid instability and lightning surges. IC Role / Device Role / Timing Role: Maintains SRAM integrity during brownouts lasting minutes to hours; interfaces directly with metering SoC backup domain. Use Value: 120 mAh capacity supports >15 years of operation at 0.5 µA typical leakage - exceeding ANSI C12.22 lifetime requirements. |
Availability
M4Z32-BR00SH is available at Aetrix Electronics and suitable for industrial PLC memory backup, medical device configuration storage, avionics data logger retention, and smart grid meter firmware integrity requiring stable component supply across extended product lifecycles.
Supply support for M4Z32-BR00SH includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.
The ZEROPOWER® SNAPHAT® product line targets long-life, maintenance-free memory backup in mission-critical systems where thermal resilience, regulatory compliance, and field-replaceability are mandatory design requirements.
FAQ
Can M4Z32-BR00SH be used with non-ST SRAM devices?
Yes - it supplies standard 2.8 V backup power and mates mechanically with any 28-pin SOIC package featuring ST's SNAPHAT®-compatible socket layout. However, compatibility must be verified against the target SRAM's backup current specification (typically ≤1 µA) and pin assignment (VBAT+, VBAT– on pins 1 and 28). ST does not guarantee interoperability with third-party SOIC footprints lacking the six-finger socket design.
What is the maximum insertion force allowed during assembly?
ST specifies a maximum insertion force of 40 pounds (178 N) to avoid battery damage or SOIC die cracking. Average insertion force is <13 lbf (58 N), as measured per Figure 2. Manual presses must be calibrated to enforce this limit; exceeding it risks internal shorting or mechanical deformation of the Li(CF) cell or SNAPHAT® housing.
How does battery life compare between M4Z28-BR00SH and M4Z32-BR00SH?
M4Z32-BR00SH offers 120 mAh capacity versus 48 mAh for M4Z28-BR00SH - a 2.5× increase - using BR1632 (vs. BR1225) Li(CF) cells. At identical load currents (e.g., 1 µA), M4Z32-BR00SH extends data retention by the same factor: ~25 years vs. ~10 years at 25°C, per AN1012 extrapolation. Both share identical voltage, chemistry, and temperature ratings.
Is wave soldering permitted for the underlying SOIC when using M4Z32-BR00SH?
No - wave soldering is explicitly prohibited. The SNAPHAT® sockets are not rated for wave solder thermal profiles and will suffer irreversible damage, including contact oxidation and loss of spring force. Only reflow soldering of the SOIC is allowed; the M4Z32-BR00SH is attached post-reflow using hand or calibrated press tools per Section 2.4.
M4Z32-BR00SH1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Snaphat®
- Package/Case:
- Snaphat®
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Back-Up Management
- Battery Chemistry:
- Lithium
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Snap-In
- Supplier Device Package:
- Snaphat®
M4Z32-BR00SH1 FAQ
1.How can I place an order for M4Z32-BR00SH1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M4Z32-BR00SH1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for M4Z32-BR00SH1 reliable?
The price and inventory of M4Z32-BR00SH1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M4Z32-BR00SH1 is usually 5 days.
3.What payment methods are accepted for M4Z32-BR00SH1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M4Z32-BR00SH1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M4Z32-BR00SH1?
M4Z32-BR00SH1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M4Z32-BR00SH1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for M4Z32-BR00SH1?
For technical support, including M4Z32-BR00SH1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M4Z32-BR00SH1 requirements.
6.How does Aetrix verify that M4Z32-BR00SH1 is sourced from the original manufacturer or authorized distributors?
All M4Z32-BR00SH1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that M4Z32-BR00SH1 meets industry standards.
7.What is the process for return or replacement of M4Z32-BR00SH1?
All M4Z32-BR00SH1 units undergo pre-shipment inspection (PSI). If there is an issue with M4Z32-BR00SH1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The M4Z32-BR00SH1 part is unused and in its original packaging.
Return procedure for M4Z32-BR00SH1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M4Z32-BR00SH1 Tags
-
DS9034PCX+
Analog Devices Inc./Maxim Integrated
-
DS9034PC+
Analog Devices Inc./Maxim Integrated
-
DS9034I-PCX+
Analog Devices Inc./Maxim Integrated
-
M4Z32-BR00SH1
STMicroelectronics
-
M4Z28-BR00SH1
STMicroelectronics
-
DS9034PCI+
Analog Devices Inc./Maxim Integrated
-
DS9034PC
Analog Devices Inc./Maxim Integrated
-
DS9034PCX
Analog Devices Inc./Maxim Integrated
-
DS90340I-PCX
Analog Devices Inc./Maxim Integrated
-
DS9034PCI
Analog Devices Inc./Maxim Integrated
-
DS1260-100
Analog Devices Inc./Maxim Integrated
-
DS1260-25
Analog Devices Inc./Maxim Integrated
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