### CM453232-R12ML Technical Overview The **CM453232-R12ML** is a high-frequency **Surface Mount Device (SMD) Wire-wound Chip Inductor**. It is part of a standard series commonly used in telecommunications and consumer electronics for signal filtering and impedance matching. --- ### 1. Part Number Breakdown The part number follows a specific nomenclature used by manufacturers like **Bourns**: | Segment | Meaning | Description | | :--- | :--- | :--- | | **CM** | Series | Wire-wound Chip Inductor | | **453232** | Case Size | 4.5mm x 3.2mm x 3.2mm (Metric) / 1812 (Imperial) | | **-R12** | Inductance | 0.12 µH (R denotes decimal point) | | **M** | Tolerance | ±20% | | **L** | Lead-Free | RoHS Compliant / Tin-plated terminals | --- ### 2. Key Specifications The following table summarizes the typical electrical characteristics for this component: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.12 µH | | **Tolerance** | ±20% | | **Q Factor (Min)** | 30 (@ 25.2 MHz) | | **Self-Resonant Frequency (SRF)** | 500 MHz (Min) | | **DC Resistance (DCR)** | 0.22 Ω (Max) | | **Rated Current (Idc)** | 450 mA | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Physical Construction The "453232" refers to the dimensions in millimeters: * **Length:** 4.5 mm * **Width:** 3.2 mm * **Height:** 3.2 mm * **Mounting:** SMD (Surface Mount Device) * **Core Material:** Usually a Ferrite core or Non-magnetic core depending on the specific sub-series frequency requirements. --- ### 4. Common Applications Due to its high Q-factor and stable inductance, this part is frequently found in: 1. **RF Circuits:** Impedance matching and tuning. 2. **Filtering:** Low-pass or high-pass filters for signal integrity. 3. **Power Decoupling:** Removing high-frequency noise from power lines in mobile devices. 4. **Telecommunications:** Base station equipment and networking hardware. ---