The part number **HT-6V221MF61E-R2** refers to a high-temperature, surface-mount (SMD) Aluminum Electrolytic Capacitor. Below is a detailed breakdown of its electronic characteristics and specifications. ### 1. General Specifications This component is designed for power management and decoupling applications where high reliability and heat resistance are required. | Parameter | Specification | | :--- | :--- | | **Capacitance** | 220 µF (Microfarads) | | **Voltage Rating** | 6.3V DC | | **Tolerance** | ±20% (M) | | **Operating Temperature** | -55°C to +105°C (Standard for HT series) | | **Mounting Type** | Surface Mount (SMD / V-Chip) | | **Packaging** | Tape and Reel (R2 suffix usually denotes reel size) | --- ### 2. Part Number Breakdown The nomenclature follows the standard coding for electrolytic capacitors: * **HT**: High-Temperature Series (often implies a specific longevity rating at 105°C). * **6V**: Rated working voltage (6.3V). * **221**: Capacitance code. The first two digits are significant figures, the third is the multiplier ($22 \times 10^1 = 220$). * **M**: Tolerance code (±20%). * **F61**: Case Size code (Refers to the diameter and height of the aluminum can). * **E-R2**: Revision and Packaging (Reel) information. --- ### 3. Key Electronic Characteristics Aluminum electrolytic capacitors like this one have specific performance metrics to consider: * **ESR (Equivalent Series Resistance):** At 220µF/6.3V, these typically have a moderate ESR suitable for general filtering but are not "Ultra-Low ESR" unless specified. * **Ripple Current:** This part is rated to handle a specific amount of AC current superimposed on the DC voltage. Exceeding this causes internal heating. * **Polarity:** As an electrolytic capacitor, it is **polarized**. The negative terminal is usually marked with a black stripe on the top of the SMD can. * **Shelf Life:** Electrolytic capacitors have a limited shelf life due to the evaporation of the liquid electrolyte over time, especially in high-heat environments. ### 4. Typical Applications * **DC-DC Converters:** Smoothing output ripples. * **Consumer Electronics:** General purpose bypass and decoupling in laptops or peripherals. * **Automotive/Industrial:** Used in modules where temperatures might reach 105°C. --- ### 5. Mechanical Dimensions (F61 Code) While exact dimensions can vary slightly by manufacturer, the **F61** code generally follows these approximate dimensions: | Dimension | Value (Approx.) | | :--- | :--- | | **Diameter (Ø)** | 6.3 mm | | **Height (L)** | 5.8 mm to 6.1 mm | ---