The **CTMPC080605F-R68M** is a high-performance, surface-mount (SMD) power inductor. It is specifically designed for high-density power applications where space is limited and high efficiency is required. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. Key Technical Specifications | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.68 µH | The nominal inductance at 100kHz. | | **Tolerance** | ±20% (M) | The allowable variance from nominal inductance. | | **DC Resistance (DCR)** | ~18-22 mΩ | The internal resistance of the coil (Max/Typ). | | **Saturation Current (Isat)** | ~8.0 - 9.0 A | The current at which inductance drops by 30%. | | **Heating Current (Irms)** | ~5.5 - 6.5 A | Current that causes a 40°C temperature rise. | | **Operating Temp** | -40°C to +125°C | Safe operational thermal range. | --- ### 2. Part Number Deciphering Understanding the nomenclature helps in identifying the physical and electrical constraints of the component: * **CTMPC**: Series prefix (Molded Power Choke). * **080605**: Dimensions. This typically corresponds to metric dimensions (approx. 2.0 x 1.6 x 0.5 mm). * **F**: Lead-free / RoHS Compliant. * **R68**: Inductance value (R68 = 0.68 µH). * **M**: Tolerance (M = ±20%). --- ### 3. Construction and Material Features * **Molded Structure:** The coil is encapsulated in a metal iron powder composite. This provides "soft saturation" characteristics, meaning the inductance doesn't drop off sharply when the current increases. * **Magnetic Shielding:** Because it is a molded inductor, it is inherently shielded. This minimizes Electromagnetic Interference (EMI) with surrounding components. * **Low Profile:** The "05" in the dimensions often signifies a height of 0.5mm, making it ideal for ultra-thin electronics like smartphones or wearable tech. --- ### 4. Common Applications Due to its high current handling and small footprint, this part is commonly used in: 1. **DC-DC Converters:** Voltage regulation modules (VRM) for CPUs and GPUs. 2. **Portable Electronics:** Smartphones, tablets, and IoT devices. 3. **Battery Powered Systems:** Where low DCR is vital to maintain high energy efficiency. ---