Overview
The Murata Electronics BLM21PG221SN1D is a ferrite bead designed for noise suppression in various electronic circuits. It belongs to the BLM series, which is known for its effectiveness in reducing electromagnetic interference (EMI) and radio-frequency interference (RFI). This component is particularly useful in circuits without stable ground lines and is suitable for high-current applications.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | BLM21PG221SN1D |
| Manufacturer | Murata Electronics |
| Package Size | 0805 |
| DC Resistance | 45mΩ ±25% |
| Impedance at 100MHz | 220Ω |
| Current Rating | Up to 2A (depending on the specific model variant) |
| RoHS Compliance | Yes |
Key Features
- Designed to function as a resistor at noise frequencies, reducing the possibility of resonance and leaving signal waveforms undistorted.
- No need for a connection to ground, making it suitable for circuits without stable ground lines.
- Nickel barrier structure of the external electrodes provides excellent solder heat resistance.
- Low DC resistance, making it suitable for high-current circuits up to 6A DC.
Applications
The BLM21PG221SN1D is used in a variety of applications, including:
- Consumer equipment: Such as cellular phones, smartphones, tablets, digital cameras, and other portable electronics.
- Medical equipment: Except for implantable, surgical, and auto-injector devices.
- Industrial equipment: Except for transportation, facility, and energy equipment.
Q & A
- What is the primary function of the BLM21PG221SN1D? The primary function is to suppress noise and reduce electromagnetic interference (EMI) in electronic circuits.
- What is the package size of the BLM21PG221SN1D? The package size is 0805.
- What is the DC resistance of the BLM21PG221SN1D? The DC resistance is 45mΩ ±25%.
- At what frequency does the BLM21PG221SN1D have an impedance of 220Ω? The impedance is 220Ω at 100MHz.
- Is the BLM21PG221SN1D RoHS compliant? Yes, it is RoHS compliant.
- What types of circuits is the BLM21PG221SN1D suitable for? It is suitable for circuits without stable ground lines and high-current circuits.
- What is the maximum current rating for the BLM21PG221SN1D? The maximum current rating can be up to 2A, depending on the specific model variant.
- What are the common applications of the BLM21PG221SN1D? Common applications include consumer electronics, medical equipment (except implantable and surgical devices), and industrial equipment (except transportation and energy equipment).
- Does the BLM21PG221SN1D require a connection to ground? No, it does not require a connection to ground.
- What is the benefit of the nickel barrier structure in the BLM21PG221SN1D? The nickel barrier structure provides excellent solder heat resistance.
