The part number **HT-25V101MF80E-R2** refers to a Surface Mount (SMD) Aluminum Electrolytic Capacitor, typically manufactured by brands like **ChengX** or similar passive component specialists. These components are designed for high-density PCB mounting and general-purpose power filtering. ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the specific electrical characteristics: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **HT** | Series Code | High Temperature / Standard SMD Series | | **25V** | Voltage Rating | 25 Volts (DC) | | **101** | Capacitance Code | 100 µF (10 followed by 1 zero) | | **M** | Tolerance | ±20% | | **F80** | Case Size | 6.3mm (Diameter) x 7.7mm or 8mm (Height) | | **E-R2** | Packaging/Suffix | Tape & Reel packaging | --- ### 2. Technical Specifications Below are the typical operating parameters for this specific electronic part: * **Capacitance:** 100 microfarads (µF) * **Rated Voltage:** 25V DC (Maximum surge voltage is usually 32V) * **Operating Temperature:** -40°C to +105°C (Standard for automotive/industrial grade) * **Lifetime:** 2,000 hours at 105°C (Load life) * **Mounting Type:** Surface Mount Device (SMD/V-Chip) * **Polarity:** Polarized (Has a negative mark on the top of the cylinder) --- ### 3. Physical Dimensions (F80 Size) The case size "F80" corresponds to the physical footprint on the PCB: | Dimension | Measurement (Approx.) | | :--- | :--- | | **Diameter (D)** | 6.3 mm | | **Height (L)** | 7.7 mm to 8.0 mm | | **Pitch (P)** | 2.2 mm | --- ### 4. Common Applications This capacitor is generally used in circuits where space is limited and reliable power regulation is required: 1. **Power Supplies:** Filtering ripple current in DC-DC converters. 2. **Consumer Electronics:** Used in LED drivers, routers, and television mainboards. 3. **Industrial Boards:** Local decoupling for integrated circuits (ICs) operating at 12V or 18V rails. 4. **Telecommunications:** Signal smoothing in networking equipment. --- ### 5. Implementation Considerations * **Polarity:** Ensure the "minus" stripe on the top of the capacitor matches the PCB silkscreen. Reversing polarity can cause the component to fail or explode. * **Reflow Soldering:** As an SMD component, it is designed for lead-free reflow soldering profiles. * **Voltage Derating:** For long-term reliability, it is recommended to run the capacitor at 80% or less of its rated voltage (e.g., using a 25V capacitor for a 12V or 15V line).