The part number **RTD-25V222MKHT-R5** refers to a specific **Aluminum Electrolytic Capacitor**. Below is a detailed technical breakdown of its specifications and electronic characteristics. ### 1. General Specifications Based on standard industry nomenclature (common for manufacturers like Samyoung or similar series), here are the core parameters: | Parameter | Value | Description | | :--- | :--- | :--- | | **Capacitance** | 2200 µF | The charge storage capacity (222 = 22 x 10^2 pF/µF logic). | | **Rated Voltage** | 25V | The maximum DC voltage it can handle continuously. | | **Tolerance** | ±20% (M) | The allowable variance in capacitance. | | **Mounting Type** | Radial Lead | Through-hole mounting with leads on the same side. | | **Temperature** | -40°C to +105°C | Rated for high-temperature environments. | --- ### 2. Part Number Breakdown The alphanumeric code follows a specific sequence used to identify the component's physical and electrical properties: * **RTD**: Refers to the **Series Name**. RTD series are typically "Low Impedance" and "High Reliability" types designed for power supplies. * **25V**: The Working Voltage (WV). * **222**: The Capacitance code. The first two digits (22) are significant figures; the third (2) is the multiplier ($10^2$). Result: $2200$ µF. * **M**: Tolerance code ($M = \pm 20\%$). * **KHT**: Typically refers to the physical size (Case Code) and lead configuration (e.g., specific Diameter x Length). * **R5**: Usually indicates the Lead Pitch (e.g., 5.0mm) or specific packaging/taping style. --- ### 3. Electronic Characteristics & Applications #### Key Performance Features: * **Low ESR/Impedance:** Designed to minimize energy loss and heat generation during high-frequency operation. * **Ripple Current Handling:** These capacitors are built to withstand significant AC ripple currents common in DC-DC converters. * **Polarity:** As an electrolytic capacitor, it is **polarized**. The negative terminal must be connected to the lower potential to avoid component failure. #### Common Use Cases: 1. **Filtering:** Used in the output stage of Switching Mode Power Supplies (SMPS) to smooth out voltage ripples. 2. **Decoupling:** Placed near high-power integrated circuits to provide instantaneous current and reduce noise. 3. **Energy Storage:** Temporary power backup for circuit segments during voltage fluctuations. --- ### 4. Safety and Handling * **Voltage Margin:** It is best practice to operate the capacitor at roughly 80% of its rated voltage (e.g., 20V for this 25V part) to extend its lifespan. * **Orientation:** Ensure the "stripe" on the casing (indicating the negative lead) aligns with the PCB markings.