## CM453232-R10ML: Component Analysis The **CM453232-R10ML** is a surface-mount (SMD) wire-wound chip inductor. It is commonly used in high-frequency circuits for signal filtering and impedance matching. --- ### 1. Part Number Breakdown The part number follows a standard nomenclature used by manufacturers like Bourns or TDK: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **CM** | Series Type | Chip Inductor, Molded type (Wire-wound) | | **453232** | Case Size | Metric dimensions: 4.5mm x 3.2mm x 3.2mm (1812 EIA) | | **R10** | Inductance Value | **0.10 µH** (R denotes decimal point) | | **M** | Tolerance | **±20%** | | **L** | Lead-Free/RoHS | Compliant with environmental standards | --- ### 2. Technical Specifications Below are the typical electrical characteristics for this specific component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.10 µH | | **Tolerance** | ±20% | | **Q Factor (Min)** | 30 (at test frequency) | | **Test Frequency** | 25.2 MHz | | **Self-Resonant Frequency (SRF)** | ~450 MHz (Min) | | **DC Resistance (DCR)** | ~0.18 Ω (Max) | | **Rated Current (Idc)** | ~800 mA | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Key Construction Features * **Core Material:** Usually Ferrite or Ceramic, depending on the specific frequency requirements. * **Molded Shielding:** The "molded" construction provides better mechanical strength and environmental protection compared to open-wire inductors. * **Termination:** Tin-plated copper electrodes for reliable soldering. ### 4. Typical Applications 1. **Telecommunications:** Used in mobile phones, base stations, and modems. 2. **Power Supplies:** Low-current DC-DC converters and voltage regulators. 3. **EMI Suppression:** Filtering high-frequency noise in signal lines. 4. **Audio/Video:** Signal processing in televisions and professional cameras. --- ### 5. Soldering Footprint (1812 Metric) When designing a PCB for this part, use the following standard **1812** land pattern dimensions: ```text <-- 4.5mm --> +-------------+ ^ | [ Pad 1 ] | --- 3.2mm | | | 3.2mm | (Spacer) | | | | v | [ Pad 2 ] | +-------------+ ```