The part number **HT-10V221MF80-R2** refers to a high-temperature, surface-mount (SMD) aluminum electrolytic capacitor. This component is designed for power management and filtering in electronic circuits. ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the component's key specifications: | Code Segment | Property | Value / Description | | :--- | :--- | :--- | | **HT** | Series | High Temperature (Low Impedance) | | **10V** | Voltage Rating | 10 Volts (DC) | | **221** | Capacitance | 220 µF (22 x 10^1) | | **M** | Tolerance | ±20% | | **F80** | Case Size | ~6.3mm x 7.7mm or 8mm (varies by mfgr) | | **R2** | Packaging | Tape & Reel (Usually) | --- ### 2. Technical Specifications This specific capacitor is typically used in automotive or industrial applications due to its "HT" (High Temperature) designation. * **Type:** Aluminum Electrolytic Capacitor (V-Chip/SMD). * **Capacitance:** 220 Microfarads (µF). * **Voltage:** 10V DC (Maximum surge usually 1.15x rated). * **Operating Temperature:** Generally rated up to **105°C** (Standard HT) or **125°C** depending on the specific manufacturer (e.g., Lelon or CapXon). * **Impedance:** Low ESR (Equivalent Series Resistance) for better ripple current handling. --- ### 3. Common Applications Due to its form factor and electrical characteristics, this part is found in: 1. **DC-DC Converters:** Filtering input/output noise. 2. **Automotive Electronics:** Sensors and infotainment systems requiring heat resistance. 3. **LED Lighting Drivers:** Smoothing the current to avoid flicker. 4. **Motherboards/Peripherals:** Localized power decoupling. --- ### 4. Comparison with Alternatives If you are looking for a replacement, ensure the following parameters match or exceed the original: ```markdown 1. Capacitance: Must be 220µF. 2. Voltage: Must be at least 10V (16V or 25V is safe to use). 3. Footprint: The "F80" size must match the PCB pad layout. 4. ESR: If used in a switching power supply, do not use a "General Purpose" cap; use "Low ESR". ```