The **PCMB104T-R36MT** is a high-current, surface-mount (SMD) power inductor commonly used in DC-DC converter applications. It belongs to a class of "molded" inductors known for their high efficiency and compact size. ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the component's physical and electrical characteristics: | Code | Segment | Meaning | | :--- | :--- | :--- | | **PCMB** | Series | High stability power inductor series | | **104T** | Size Code | Approx. 11.5mm x 10.0mm x 4.0mm | | **R36** | Inductance | 0.36 Microhenries ($\mu H$) | | **M** | Tolerance | $\pm 20\%$ | | **T** | Packaging | Tape & Reel | --- ### 2. Key Technical Specifications Below are the typical electrical parameters for this specific component: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.36 $\mu H$ | | **DC Resistance (DCR)** | ~1.1 m$\Omega$ (Typical) / 1.3 m$\Omega$ (Max) | | **Saturation Current ($I_{sat}$)** | ~50.0 Amperes | | **Heating Current ($I_{rms}$)** | ~28.0 Amperes | | **Operating Temperature** | -55°C to +125°C | --- ### 3. Core Features and Construction * **Metal Powder Core:** Unlike traditional ferrite inductors, the PCMB series uses a magnetic metal powder core. This allows for a **soft saturation** characteristic, meaning the inductance drops gradually rather than abruptly when current increases. * **Magnetic Shielding:** The molded construction inherently shields the component, reducing Electromagnetic Interference (EMI) which is critical for densely packed circuit boards. * **Low DCR:** The extremely low DC resistance minimizes power loss through heat, making it ideal for high-efficiency power supplies. --- ### 4. Common Applications This part is typically found in high-demand electronic environments: 1. **Voltage Regulator Modules (VRMs):** Used in CPU and GPU power delivery on motherboards. 2. **Point of Load (POL) Converters:** Small, localized power supplies within laptops and servers. 3. **Battery Powered Devices:** Where high efficiency is required to extend battery life. 4. **DC-DC Converters:** Distributed power systems requiring high current handling. --- ### 5. Footprint (Mechanical Data) For PCB design (Layout), the following dimensions are standard for the 104T size: * **Length:** 11.5 mm (max) * **Width:** 10.0 mm (max) * **Height:** 4.0 mm (max)