The **0618CDMCCDS-R22MC** is a high-performance, surface-mount (SMD) power inductor. It is part of the CDMCCDS series manufactured by **Sumida**, specifically designed for automotive and high-reliability industrial applications. --- ## 1. Part Number Breakdown Understanding the alphanumeric code helps identify the component's physical and electrical characteristics: | Code | Meaning | Description | | :--- | :--- | :--- | | **0618** | Case Size | Approx. 6.0mm x 6.0mm with a 1.8mm height. | | **CDMC** | Series Type | Metal composite mold type inductor. | | **R22** | Inductance Value | **0.22 µH** (R denotes the decimal point). | | **M** | Tolerance | **±20%** (Standard for power inductors). | | **C** | Automotive Grade | Indicates compliance with **AEC-Q200** standards. | --- ## 2. Key Technical Specifications This inductor is built using a metal powder core, which provides superior saturation characteristics compared to traditional ferrite cores. * **Inductance:** 0.22 µH * **DC Resistance (DCR):** Extremely low (typically in the range of 3.0 to 4.5 mΩ). * **Saturation Current (Isat):** The current at which inductance drops by 30%. For this specific model, it is typically very high (approx. 18A - 22A). * **Temperature Range:** -55°C to +155°C (includes self-heating). * **Construction:** Magnetically shielded, low acoustic noise. --- ## 3. Applications and Features ### Primary Applications * **Automotive Systems:** ECU, ADAS, LED lighting drivers, and Infotainment. * **DC/DC Converters:** Used in high-frequency switching regulators. * **Power Modules:** Ideal for CPU/GPU power supply in compact electronics. ### Key Features 1. **Metal Composite Technology:** Offers "soft saturation," meaning the inductance doesn't drop abruptly when current increases. 2. **AEC-Q200 Qualified:** Tested for mechanical shock, vibration, and extreme thermal cycling. 3. **Low Profile:** The 1.8mm height is ideal for space-constrained PCB designs. 4. **Low EMI:** The molded construction minimizes magnetic flux leakage. --- ## 4. Comparison Table: 0.22µH vs Others | Feature | 0618CDMCCDS-R22MC | Standard Ferrite Inductor | | :--- | :--- | :--- | | **Saturation Profile** | Soft (Gradual) | Hard (Sudden drop) | | **Shielding** | Excellent (Magnetic Mold) | Variable | | **Heat Resistance** | Up to 155°C | Typically 125°C | | **Footprint** | 6.0 x 6.0 mm | Variable |