The part number **HTK-25V331MH10BX-R2** refers to a high-performance **Aluminum Electrolytic Capacitor**, typically designed for surface mount (SMD) applications. These components are commonly used in automotive electronics, industrial power supplies, and telecommunications due to their durability and high temperature resistance. --- ### 1. Technical Specifications Table | Feature | Description | | :--- | :--- | | **Capacitance** | 330 µF (Microfarads) | | **Voltage Rating** | 25V DC | | **Tolerance** | ±20% | | **Temperature Range** | -55°C to +125°C (High Temperature Grade) | | **Mounting Type** | Surface Mount Device (SMD/V-Chip) | | **Case Size** | 10.0mm (Diameter) x 10.5mm (Height) | | **Series** | HTK Series (High Temperature, Low ESR) | | **Packaging** | Tape & Reel (R2 suffix usually denotes reel size/quantity) | --- ### 2. Breakdown of the Part Number The alphanumeric code follows a specific logic used by manufacturers (often associated with brands like CapXon or similar high-reliability manufacturers): * **HTK**: Indicates the series. This series is characterized by high temperature endurance (often up to 125°C) and low ESR (Equivalent Series Resistance). * **25V**: The maximum working voltage (25 Volts). * **331**: The capacitance code. "33" followed by "1" zero = 330µF. * **M**: The tolerance code (M = ±20%). * **H10**: Refers to the physical dimensions (Case code for 10x10.5mm). * **BX**: Internal manufacturing/material revision code. * **R2**: Packaging type (Tape and Reel). --- ### 3. Key Electronic Characteristics #### High Temperature Stability Unlike standard electrolytic capacitors rated for 85°C or 105°C, the **HTK** series is rated for **125°C**. This makes it ideal for environments with poor ventilation or proximity to heat-generating components like CPUs or power MOSFETs. #### Low ESR (Equivalent Series Resistance) This part is designed to have low internal resistance. In electronic circuits, low ESR ensures: * Lower heat generation during operation. * Better efficiency in filtering high-frequency noise. * Higher ripple current capability. #### Application Use-Cases * **DC-DC Converters:** Used for smoothing output voltage. * **Automotive Modules:** Ideal for under-the-hood electronics where temperatures fluctuate. * **LED Drivers:** Provides stable power filtering to prevent flickering. --- ### 4. Schematic Representation In a circuit diagram, this component is polarized. ```text (+) ---| |--- (-) 330uF 25V ``` *Note: During installation, the dark marking on the top of the "V-Chip" indicates the negative terminal.*