The **CTMPH100805F-R33M** is a high-performance **surface-mount (SMD) power inductor** manufactured by Central Technologies. It belongs to the CTMPH series, which utilizes molded power technology to provide high current density and low magnetic interference. --- ### 1. Technical Specifications The following table outlines the key electrical and physical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±20% (M) | | **DCR (Direct Current Resistance)** | 3.5 mΩ (Max) | | **Isat (Saturation Current)** | 23.0 A | | **Irms (Rated Current)** | 16.0 A | | **Operating Temperature** | -40°C to +125°C | | **Dimensions (LxWxH)** | 2.5 x 2.0 x 1.2 mm (Approx. 1008 case) | | **Construction** | Shielded, Molded Iron Powder Core | --- ### 2. Breakdown of the Part Number Understanding the nomenclature helps in identifying variants within the same family: * **CTMPH**: Series code (Central Technologies Molded Power High-current). * **100805**: Physical dimensions (approx. 0.10 x 0.08 inches, with a height of 0.05 inches). * **F**: RoHS compliant / Lead-free. * **R33**: Inductance value (R33 = 0.33 µH). * **M**: Inductance tolerance (M = ±20%). --- ### 3. Key Features & Advantages * **High Current Handling:** Due to the metal powder core, it can handle high saturation currents without a sharp drop in inductance. * **Magnetic Shielding:** The molded construction naturally shields the component, reducing Electromagnetic Interference (EMI) with surrounding components. * **Low Profile:** The "05" height designation indicates a very thin profile, making it ideal for compact mobile electronics. * **Low DCR:** Minimizes power loss (heat) during operation, increasing overall power supply efficiency. --- ### 4. Common Applications These inductors are typically found in high-efficiency power regulation circuits, including: 1. **DC-DC Converters:** Used in "Buck" (step-down) converters for smartphones and tablets. 2. **GPU/CPU Power Supply:** Providing stable current to high-speed processors. 3. **IoT Devices:** Where space is limited and battery efficiency is critical. 4. **SSD Drives:** Managing power rails in high-speed storage devices.