0805USBF-262MRC

Updated: 2026-09-11

Overview

The 0805USBF-262MRC is a surface-mount ferrite bead belonging to the 0805 package series (2.0mm × 1.25mm). These components are passive devices that suppress high-frequency noise in electronic circuits by converting electromagnetic interference into heat. The '262' designation indicates its nominal impedance of 262 ohms at a specified test frequency, typically 100MHz. As a two-terminal device, it functions as a frequency-dependent resistor, offering low resistance to DC signals while attenuating unwanted AC noise. The component finds extensive use in modern electronics where board space is at a premium and EMI compliance is mandatory. Its compact size makes it particularly suitable for high-density PCB layouts in consumer electronics and telecommunications equipment.

Structure and Working Principle

The 0805USBF-262MRC consists of a ferrite ceramic core wrapped with conductive electrodes, encapsulated in a multilayer construction. The ferrite material's magnetic properties create impedance to high-frequency signals through a combination of resistive and inductive effects. When high-frequency noise passes through the bead, the ferrite's complex permeability causes energy dissipation as heat. The component's effectiveness peaks at its self-resonant frequency, with the 262 ohm rating representing its impedance at the manufacturer-specified test conditions. The surface-mount design features nickel barrier layers and tin plating for reliable solderability, complying with standard reflow processes.

Key Features

This ferrite bead offers several distinctive characteristics. The 0805 package provides a balance between compact size and handling ease during automated assembly. Its impedance curve is optimized for suppressing noise in the MHz range, particularly effective for digital circuit applications. The component maintains stable performance across a typical temperature range of -55°C to +125°C, with minimal variation in impedance characteristics. It exhibits low DC resistance (typically <1 ohm) to minimize voltage drop in power lines. The construction provides good mechanical strength and thermal shock resistance, meeting standard reliability requirements for commercial electronics.

Application Areas

Primary applications include power supply filtering in switching regulators, noise suppression on data lines, and EMI reduction in high-speed digital circuits. The 0805USBF-262MRC is commonly found in smartphones, tablets, IoT devices, and computer peripherals. In power management systems, it filters switching noise from DC-DC converters. For signal integrity applications, it prevents electromagnetic interference from propagating along cables or between circuit sections. The component also serves in RF circuits to suppress parasitic oscillations while allowing DC bias currents to pass unaffected.

Maintenance and Precautions

Proper handling ensures optimal performance and longevity. During PCB assembly, maintain recommended soldering profiles with peak temperatures not exceeding 260°C for lead-free processes. Avoid mechanical stress during placement that could crack the ceramic body. Designers should consider the bead's current rating to prevent saturation effects, which reduce filtering effectiveness. In high-vibration environments, additional mechanical support may be necessary. Storage should be in dry conditions to maintain solderability, with typical shelf life of 12 months when kept in original packaging.

B2B Procurement Guide

Industrial buyers should specify tape-and-reel packaging for automated assembly, typically with 4,000-10,000 units per reel. Minimum order quantities vary by supplier but often start at 10,000 pieces for competitive pricing. Key procurement considerations include verifying AEC-Q200 compliance for automotive applications when required, checking lead-time availability (commonly 8-12 weeks for custom orders), and confirming RoHS/REACH compliance documentation. Some suppliers offer value-added services like kitting with other passive components or custom taping configurations for specific pick-and-place machines.