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60A to 100A SMD Fuses Replace Multiple Parallel Fuses In UPSs

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60A to 100A SMD Fuses Replace Multiple Parallel Fuses In UPSs

Littelfuse has announced new series of high current SMD fuses which are designed for applications hat require both a compact footprint and protection from ultra-high currents. The new fuses rated from 60A to 100A avoid need to parallel multiple fuses or over-spec industrial-type fuses which designers commonly use to handle high currents.

Typical applications for the 881 Series in the data center market include blade servers, server chassis, backplane boards and line cards. Additional applications in the power system market include uninterruptible power supplies (UPSs), base station power supplies, high power battery systems and power factor correction (PFC) in high-wattage power supplies.

The Nano2 881 Series offers a single fuse solution up to 75VDC and are available in current ratings from 60A to 100A. The series includes the first 100A SMD fuse available on the market.

The fuses are available in a small footprint (12.5mm x 10mm) and low profile (6.8mm) which makes an ideal compact, single fuse solution for high current application requirements. The products reduce the amount of board space required for protection circuits in high wattage equipment.

The 881 Series is said to have minimal voltage drop and low temperature rise, which enhances power efficiency by optimizing thermal performance and minimizing power loss.

Further benefit of these fuses is an operating range from -55°C to 100°C making them suitable for use in existing operating environments. Their robust design enhances reliability and reduces susceptibility to temperature cycling and vibration effects, claims the company.

“The 881 Series Fuse offers circuit designers a single fuse alternative for higher current applications where board space is extremely limited,” said Daniel Wang, director, Global Product Management, Electronics Business Unit at Littelfuse. “Designers can conserve board space by replacing two parallel lower-rated fuses with just one 881 Series fuse.”

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Other beneficial features include a high interrupting rating at [email protected] making the products suitable for a wide variety of applications. They are also claimed to offer a faster opening time at 200% overload current (60 seconds max) than other industry solutions (typically 120 seconds), to ensure protection against overload and short circuit events.

The Nano2 881 Series Fuse is available in surface mount packages in 24mm tape and reel format in quantities of 500. Sample are available through authorized Littelfuse distributors worldwide.

For full Press release, click here.

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