The **CTIHLP104F-R36M** is a high-current, low-profile surface-mount (SMD) power inductor. It is commonly used in DC-DC converters and high-frequency power supplies where efficiency and space-saving are critical. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electronic characteristics: | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.36 µH | The nominal inductance at 100kHz. | | **Tolerance** | ±20% (M) | The allowable variance in inductance. | | **DC Resistance (DCR)** | ~0.9 mΩ (Typ) | Ultra-low resistance to minimize power loss. | | **Isat (Saturation Current)** | ~40.0 A | The current at which inductance drops by ~20%. | | **Irms (Rated Current)** | ~28.0 A | The current that causes a 40°C temperature rise. | | **Dimensions** | 11.5 x 10.3 x 4.0 mm | Standard 1040 package size (LxWxH). | --- ### 2. Physical Construction The "HLP" series typically utilizes a **shielded molded construction**: * **Core Material:** Carbonyl iron powder or composite metal alloy. This allows for soft saturation (the inductance doesn't drop off instantly when current increases). * **Shielding:** The molded body provides magnetic shielding, reducing Electromagnetic Interference (EMI) with neighboring components. * **Lead Frame:** Heavy-duty copper terminals for high-current handling and robust soldering. --- ### 3. Key Electronic Features * **High Frequency Performance:** Designed to operate efficiently in switching frequencies ranging from 100 kHz to over 1.0 MHz. * **Low Core Loss:** The composite materials are engineered to reduce eddy current losses, which is vital for high-efficiency power stages. * **Thermal Stability:** It maintains consistent performance across a wide temperature range (typically -40°C to +125°C). --- ### 4. Common Applications This inductor is frequently found in the following circuits: 1. **Voltage Regulator Modules (VRMs):** Powering CPUs and GPUs. 2. **Point of Load (POL) Converters:** Step-down (Buck) converters for telecom and industrial equipment. 3. **Battery Powered Systems:** Where low DCR is required to extend battery life. 4. **Servers and Data Centers:** High-current power distribution rails.