The PFAF250E128MPSTEAS is a supercapacitor, also known as an ultracapacitor or electric double-layer capacitor (EDLC), manufactured by NEC (formerly NEC-TOKIN). Supercapacitors bridge the gap between conventional capacitors and batteries, offering higher energy density than capacitors and higher power density than batteries. They are characterized by their ability to rapidly store and release energy, making them suitable for applications requiring bursts of power or energy harvesting.

Applications

• Energy harvesting systems: Supercapacitors can store energy generated from renewable sources like solar or wind.
• Hybrid vehicles: Used in regenerative braking systems to capture and reuse energy during deceleration.
• Backup power systems: Provides short-term power backup in case of power outages.
• Power tools: Delivers bursts of power for demanding applications.
• Portable electronic devices: Extends battery life in smartphones, tablets, and laptops.

Features

• High power density: Delivers large amounts of power quickly.
• Long cycle life: Can withstand hundreds of thousands or even millions of charge/discharge cycles.
• Fast charging: Charges much faster than batteries.
• Wide operating temperature range: Functions reliably in various environmental conditions.
• Environmentally friendly: Does not contain hazardous materials like lead or cadmium.

Benefits

• Improved energy efficiency: Recaptures and reuses energy, reducing overall energy consumption.
• Extended product lifespan: Long cycle life minimizes the need for replacements.
• Enhanced performance: Provides bursts of power for demanding applications.
• Reduced maintenance costs: Requires minimal maintenance compared to batteries.
• Environmentally responsible solution: Contributes to a greener and more sustainable future.

Additional Details

While precise specifications require referencing the official NEC datasheet, supercapacitors of this type typically feature a voltage rating around 2.5V to 2.7V. The capacitance value, indicated by the '250' in the part number, is likely around 250 Farads, although this should be confirmed with the official documentation. The 'E128MPSTEAS' portion likely indicates specific packaging, terminal type, and other performance characteristics. These devices generally have a low Equivalent Series Resistance (ESR), which contributes to their high power density. They are typically constructed using activated carbon materials and an organic electrolyte. Consult the manufacturer's datasheet for detailed information on voltage limits, temperature ranges, ESR, and other critical parameters.