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BLM21BD421SN1D

EMIFIL (Inductor type) Chip Ferrite Bead BLM21B Series (0805 Size)

Partnumber Manufacturer Quantity Availability
BLM21BD421SN1D 4000 In Stock

Description and Introduction

EMIFIL (Inductor type) Chip Ferrite Bead BLM21B Series (0805 Size) The **BLM21BD421SN1D** is a surface-mount ferrite bead designed to suppress high-frequency noise in electronic circuits. As part of the **BLM21BD series**, this component is widely used in applications requiring effective electromagnetic interference (EMI) filtering, such as power supplies, communication devices, and digital circuits.  

With an impedance of **420Ω at 100MHz**, the BLM21BD421SN1D provides reliable noise suppression while maintaining minimal signal distortion. Its compact **0805 package** (2.0mm × 1.25mm) makes it suitable for high-density PCB designs. The component operates within a **temperature range of -55°C to +125°C**, ensuring stability in various environmental conditions.  

Constructed with a high-permeability ferrite core, it effectively attenuates unwanted high-frequency signals without significantly affecting DC or low-frequency currents. This makes it ideal for protecting sensitive circuits from interference while preserving signal integrity.  

Key features include:  
- **Rated current:** 200mA  
- **DC resistance (DCR):** 0.35Ω (max)  
- **RoHS compliance**  

Engineers often integrate the BLM21BD421SN1D into power lines, data buses, and RF circuits to enhance EMI performance. Its reliability and efficiency make it a preferred choice for modern electronic designs requiring robust noise suppression.

Partnumber Manufacturer Quantity Availability
BLM21BD421SN1D MURATA 4000 In Stock

Description and Introduction

EMIFIL (Inductor type) Chip Ferrite Bead BLM21B Series (0805 Size) The BLM21BD421SN1D is a ferrite bead manufactured by Murata. Here are its key specifications:

- **Part Number**: BLM21BD421SN1D  
- **Manufacturer**: Murata  
- **Type**: Ferrite Bead (Chip Bead)  
- **Impedance**: 420 Ω (at 100 MHz)  
- **Rated Current**: 500 mA  
- **DC Resistance (DCR)**: 0.25 Ω (max)  
- **Operating Temperature Range**: -55°C to +125°C  
- **Package Size**: 0805 (2.0 mm × 1.2 mm)  
- **Material**: Nickel-Zinc (NiZn) ferrite  
- **Application**: Noise suppression in electronic circuits  

This component is commonly used for EMI filtering in power lines and signal lines.

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