## Technical Overview of CTMC1008-R056M The **CTMC1008-R056M** is a surface-mount (SMD) wire-wound ceramic core inductor. It belongs to the 1008 (2520 metric) form factor family and is designed for high-frequency applications where high Q-factors and stable inductance are required. --- ### 1. Key Technical Specifications | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.056 µH (56 nH) | The nominal inductance value. | | **Tolerance** | ±20% (M) | The allowable variance from the nominal value. | | **Case Size** | 1008 (2520 Metric) | Dimensions: approx. 2.5mm x 2.0mm. | | **Core Material** | Ceramic | Provides high frequency stability and low loss. | | **DC Resistance (DCR)** | ~0.18 Ω (Max) | Internal resistance of the wire winding. | | **Rated Current** | ~700 mA | Maximum continuous current without overheating. | | **Self-Resonant Freq (SRF)** | > 1600 MHz | The limit beyond which it acts as a capacitor. | --- ### 2. Breakdown of the Part Number The nomenclature follows a standard industry pattern: * **CTMC**: Series prefix (typically indicating Ceramic Molded or Chip Inductor). * **1008**: Physical dimensions (Length 0.10" x Width 0.08"). * **R056**: Inductance value. "R" acts as the decimal point (0.056 µH). * **M**: Tolerance code (M = ±20%). --- ### 3. Core Features and Applications #### Features * **High Q Factor:** Ceramic cores provide excellent performance in RF (Radio Frequency) circuits. * **Wire-Wound Construction:** Offers significantly higher current carrying capacity and lower DCR compared to multilayer chip inductors. * **Small Footprint:** Ideal for high-density PCB layouts. #### Common Applications * **RF Transceivers:** Used in matching networks and filters for wireless communication. * **Broadband Systems:** Signal shaping in high-speed data transmission. * **Mobile Electronics:** Bluetooth, Wi-Fi modules, and cellular infrastructure. * **Decoupling:** Filtering high-frequency noise in sensitive power rails. --- ### 4. Part Comparison (Similar Components) | Part Number | Inductance | Material | Best For | | :--- | :--- | :--- | :--- | | **CTMC1008-R056M** | 56 nH | Ceramic | High-Freq / RF | | **CTMC1008-1R0M** | 1.0 µH | Ferrite/Ceramic | Power Filtering | | **CTMC1008-R056K** | 56 nH | Ceramic | Higher Precision (±10%) | ---