The **LSML-321611-R56M-B** is a high-frequency multilayer chip inductor. It is a surface-mount device (SMD) commonly used for power management and signal filtering in compact electronic circuits. Below is a detailed breakdown of its specifications and part numbering logic. --- ### 1. Specification Overview | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.56 µH (560 nH) | The nominal inductance value. | | **Tolerance** | ±20% | Indicated by the "M" suffix. | | **Case Size** | 3216 (Metric) / 1206 (Imperial) | Physical dimensions of the component. | | **Current Rating** | ~250mA - 450mA | Typical saturation/rated current (varies by manufacturer). | | **DC Resistance (DCR)** | ~0.30 - 0.50 Ω | Typical internal resistance. | | **Material** | Ferrite | Multilayer ferrite construction for high-frequency stability. | --- ### 2. Part Number Breakdown Most manufacturers (such as Taiyo Yuden, TDK, or Sunlord) follow a similar naming convention for this specific part: * **LSML**: Product Series (Multilayer Chip Inductor, often for power or signal lines). * **321611**: Dimensions. * Length: 3.2 mm * Width: 1.6 mm * Thickness: 1.1 mm * **R56**: Inductance value. "R" acts as the decimal point. (R56 = 0.56 µH). * **M**: Tolerance code (M = ±20%). * **B**: Packaging code (usually refers to Bulk or specific Reel types). --- ### 3. Key Applications Because of its multilayer ferrite structure, this inductor is ideal for: 1. **Mobile Devices:** Used in smartphones and tablets for DC-DC converter circuits. 2. **Noise Suppression:** Filtering high-frequency electromagnetic interference (EMI) on power lines. 3. **Signal Conditioning:** Decoupling and oscillating circuits where space is limited. --- ### 4. Characteristics Comparison | Feature | Multilayer Inductor (LSML) | Wire-Wound Inductor | | :--- | :--- | :--- | | **Size** | Very Small / Low Profile | Larger | | **Cost** | Lower | Higher | | **Q-Factor** | Moderate | High | | **Shielding** | Self-shielded (Magnetic) | Often unshielded | ---