BLM21BD102SN1D

The BLM21BD102SN1D is a type of ferrite bead manufactured by Murata Electronics, designed primarily for use in electronic circuits to suppress high-frequency noise. Here’s a detailed description of its features and specifications:

General Description:

• Type: Ferrite Bead
• Series: BLM21
• Part Number: BLM21BD102SN1D

Physical Characteristics:

• Package Size: The component is typically housed in a compact 0805 (2.0mm x 1.25mm) surface-mount package, making it suitable for space-constrained applications.
• Material: The ferrite material used in the bead is designed to provide effective impedance at high frequencies while maintaining low DC resistance.
• Color: The bead usually has a dark color, often black or dark brown, which is typical for ferrite components.

Electrical Specifications:

• Impedance: The BLM21BD102SN1D has a nominal impedance of 1,000 ohms at a frequency of 100 MHz, making it effective for filtering out high-frequency noise in various applications.
• DC Resistance (DCR): The DC resistance is low, typically around 0.15 ohms, which minimizes power loss in the circuit.
• Rated Current: The component can handle a rated current of up to 300 mA, making it suitable for a variety of electronic devices, including mobile phones, tablets, and other consumer electronics.

Performance Characteristics:

• Frequency Range: The ferrite bead is effective in a wide frequency range, particularly in the RF (radio frequency) spectrum, which is crucial for applications involving signal integrity.
• Temperature Range: The operating temperature range is typically from -55°C to +125°C, allowing it to function reliably in various environmental conditions.

Applications:

• Noise Suppression: The primary application of the BLM21BD102SN1D is in noise suppression for power lines and signal lines in electronic circuits.
• Consumer Electronics: It is commonly used in smartphones, tablets, laptops, and other portable devices to enhance performance by reducing electromagnetic interference (EMI).
• Automotive: The component can also be found in automotive electronics, where reliable performance under varying conditions is essential.

Compliance and Standards:

• The BLM21BD102SN1D typically complies with various industry standards, ensuring it meets the necessary requirements for safety and performance in electronic applications.

Conclusion:

The BLM21BD102SN1D from Murata Electronics is a versatile and efficient ferrite bead that plays a crucial role in maintaining signal integrity and reducing noise in electronic circuits. Its compact size, high impedance at RF frequencies, and robust performance characteristics make it an ideal choice for a wide range of applications in modern electronics.