Memory - Batteries

PDF	Mfr Part #	Quantity Available	UnitPrice	RFQ	Series	Packaging	Product Status	Function	Battery Chemistry	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
	M4Z32-BR00SH1 IC SNAPHAT BATTERY 120MAH 28SOIC STMicroelectronics	29	$11.97		Snaphat®	Tube	Active	Back-Up Management	Lithium	-40°C ~ 85°C	Snap-In	Snaphat®	Snaphat®
	M4Z28-BR00SH1 IC SNAPHAT BATTERY 48MAH 28-SOIC STMicroelectronics	100	$8.23		Snaphat®	Tube	Active	Back-Up Management	Lithium	-40°C ~ 85°C	Snap-In	Snaphat®	Snaphat®

What are Memory Batteries?

Memory Batteries

Memory batteries are specialized power sources designed to provide backup power to memory integrated circuits (ICs) to preserve data during power outages or when the main power supply is disconnected. These batteries ensure that volatile memory, such as SRAM, retains its stored information by supplying a continuous low-level current. Operating on the principle of maintaining a stable voltage output, memory batteries are crucial in applications where data integrity is paramount, preventing data loss and ensuring seamless operation upon power restoration.

Types of Memory Batteries

Lithium Coin Cell Batteries

Lithium coin cell batteries are compact, lightweight, and have a long shelf life, making them ideal for low-power applications. They are commonly used in small electronic devices due to their stable voltage output and ability to operate over a wide temperature range. Their primary use is in devices where space is limited, and long-term reliability is essential.

Nickel-Cadmium (NiCd) Batteries

Nickel-Cadmium batteries are known for their robustness and ability to deliver high discharge rates. They are often used in applications requiring frequent charge and discharge cycles. While they have a lower energy density compared to lithium batteries, their durability and resistance to overcharging make them suitable for industrial applications.

Nickel-Metal Hydride (NiMH) Batteries

Nickel-Metal Hydride batteries offer a higher energy density than NiCd batteries and are more environmentally friendly. They are used in applications where a balance between capacity and environmental impact is desired. NiMH batteries are often found in consumer electronics and portable devices.

How to choose Memory Batteries?

When selecting memory batteries, consider the following key parameters:

Voltage and Capacity: Ensure the battery's voltage matches the memory IC's requirements and that its capacity supports the desired backup duration.
Size and Form Factor: Choose a battery that fits within the physical constraints of the device.
Temperature Range: Select batteries that can operate efficiently within the environmental conditions of the application.
Cycle Life: Consider the number of charge-discharge cycles the battery can endure without significant capacity loss.
Environmental Impact: Opt for batteries with minimal environmental impact, such as those with recyclable materials.

To evaluate product quality and reliability, research supplier reputations, review product specifications, and consider certifications such as ISO standards. Additionally, assess the warranty and support services offered by suppliers. Installation requirements may include ensuring proper ventilation, securing the battery in place, and following manufacturer guidelines for optimal performance.

Applications of Memory Batteries

Consumer Electronics

In consumer electronics, memory batteries are used in devices like laptops, smartphones, and digital cameras to maintain system settings and user data during power interruptions. They ensure that user preferences and data are preserved, enhancing the user experience.

Industrial Automation

Memory batteries play a critical role in industrial automation systems by preserving configuration data and operational parameters in programmable logic controllers (PLCs) and other control systems. This ensures that production processes can resume without reconfiguration after power failures.

Telecommunications

In telecommunications, memory batteries are essential for maintaining network configurations and call data in switches and routers. They help prevent data loss and ensure continuous service availability, which is crucial for communication networks.

Medical Devices

Medical devices, such as patient monitors and infusion pumps, rely on memory batteries to retain critical patient data and device settings. This ensures that medical equipment operates reliably and maintains patient safety during power outages.

Automotive Industry

In the automotive industry, memory batteries are used in electronic control units (ECUs) to preserve vehicle settings and diagnostic data. They help maintain vehicle performance and facilitate troubleshooting by retaining error codes and system configurations.