BLM21AG102SH1D

The BLM21AG102SH1D 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: BLM21AG102SH1D

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, which helps in noise suppression.
• Color: The bead usually has a dark color, often black or dark brown, which is typical for ferrite components.

Electrical Specifications:

• Impedance: The BLM21AG102SH1D has an impedance of 1,000 ohms at a frequency of 100 MHz, making it effective for filtering out unwanted high-frequency signals.
• Rated Current: It can handle a rated current of up to 300 mA, which allows it to be used in various applications without overheating or degrading performance.
• DC Resistance (DCR): The DC resistance is typically low, around 0.15 ohms, which minimizes power loss in the circuit.
• Operating Temperature Range: The component is designed to operate within a temperature range of -55°C to +125°C, ensuring reliability in various environmental conditions.

Applications:

• Use Cases: The BLM21AG102SH1D is commonly used in power supply circuits, audio equipment, and RF applications where noise reduction is critical. It is also suitable for use in consumer electronics, telecommunications, and automotive applications.
• Functionality: By placing the ferrite bead in series with the signal line, it effectively attenuates high-frequency noise while allowing lower-frequency signals to pass through, thus maintaining signal integrity.

Compliance and Standards:

• RoHS Compliance: The component is compliant with RoHS (Restriction of Hazardous Substances) standards, making it environmentally friendly and suitable for use in modern electronic devices.

Summary:

The BLM21AG102SH1D from Murata Electronics is a high-performance ferrite bead that provides excellent noise suppression capabilities in a compact package. Its high impedance at RF frequencies, low DC resistance, and robust construction make it an ideal choice for a wide range of electronic applications where signal integrity is paramount.