The **CTMPH080503F-R24M** is a high-performance, surface-mount (SMD) power inductor. This specific part belongs to the molded power inductor category, designed for high-density power supply circuits. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **CTMPH** | Series Type | Metal Alloy Molded Power Inductor | | **0805** | Case Size (Inch) | 2.0 x 1.2 mm (Standard 0805 footprint) | | **03** | Height Code | Approximately 1.0 mm to 1.2 mm thickness | | **F** | Environmental | RoHS Compliant / Halogen Free | | **R24** | Inductance Value | 0.24 µH (Microhenries) | | **M** | Tolerance | ±20% | --- ### 2. Technical Specifications The electrical behavior of this inductor is optimized for high switching frequencies and high current efficiency. | Parameter | Value (Typical) | | :--- | :--- | | **Inductance** | 0.24 µH | | **DC Resistance (DCR)** | ~18 - 25 mΩ (Max) | | **Saturation Current (Isat)** | ~4.5A - 5.5A (Current where inductance drops 30%) | | **Temperature Rise Current (Irms)** | ~3.5A - 4.2A (Current causing 40°C rise) | | **Operating Temperature** | -40°C to +125°C | | **Construction** | Metal Powder (Iron Alloy) | --- ### 3. Key Electronic Features * **Molded Construction:** The coil is encapsulated in a metallic powder mixture. This provides excellent magnetic shielding, reducing Electromagnetic Interference (EMI) compared to traditional wire-wound unshielded inductors. * **High Saturation:** Unlike ferrite inductors, the metal alloy core has a "soft saturation" curve. This means it doesn't lose its inductance suddenly when current spikes, providing a safety margin for the circuit. * **Low DCR:** The use of flat or heavy-gauge copper wire inside the small 0805 footprint ensures minimal power loss through heat. --- ### 4. Common Applications Due to its small size and high current capability, the CTMPH080503F-R24M is typically found in: 1. **DC-DC Converters:** Specifically Point-of-Load (POL) converters for CPUs and GPUs. 2. **Smartphones/Tablets:** Used in power management integrated circuits (PMICs) where space is extremely limited. 3. **SSD Drives:** Providing stable power to high-speed flash controllers. 4. **Wearable Tech:** IoT devices requiring high efficiency in a tiny form factor. --- ### 5. Equivalent/Alternative Search If you are looking for alternatives, you should search for the following series from other manufacturers: * **TDK:** VLS or TFM Series (2012 / 0805 size). * **Murata:** DFE2012 series. * **Vishay:** IHLP-1212 series (though footprints may vary slightly).