Based on the identification code **MEH28ZBD-R**, this part is an **Electrolytic Capacitor**, specifically from the **MEH Series** manufactured by **Man Yue (Samxon)**. These are large-scale, snap-in terminal aluminum electrolytic capacitors designed for high-power industrial applications. --- ### 1. Part Number Breakdown The alphanumeric code follows a specific manufacturer nomenclature: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **MEH** | Series Name | High-reliability, snap-in type, 105°C rated. | | **28** | Voltage/Capacitance Code | Usually indicates voltage rating (e.g., 280V or a size code). | | **ZBD** | Case/Terminal Code | Refers to the physical dimensions (Diameter x Length). | | **-R** | Compliance | RoHS compliant (Lead-free). | --- ### 2. Technical Specifications While exact values can vary based on specific manufacturer datasheets for that sub-code, the **MEH Series** generally follows these parameters: * **Type:** Aluminum Electrolytic (Polarized). * **Terminal Type:** Snap-in (designed for PCB mounting with stability). * **Temperature Range:** -40°C to +105°C (Standard industrial high-temp rating). * **Load Life:** Typically 2,000 to 3,000 hours at 105°C (Equivalent to several years at room temperature). * **Voltage Range:** Often found between 160V and 450V. * **Tolerance:** ±20% (Standard for electrolytic caps). --- ### 3. Key Features & Applications #### Features: * **High Ripple Current:** Designed to handle significant AC components superimposed on the DC voltage. * **Compact Design:** High capacitance density relative to its physical footprint. * **Safety Vent:** Includes a pressure relief vent on the top or bottom to prevent explosion during failure. #### Typical Applications: 1. **Switch Mode Power Supplies (SMPS):** Used as a primary smoothing capacitor. 2. **Frequency Converters:** Used in the DC-link circuit. 3. **Uninterruptible Power Supplies (UPS):** Energy storage for power backup. 4. **Industrial Inverters:** Filtering and decoupling in motor drives. --- ### 4. Precautions for Use * **Polarity:** These are polarized components. Reversing the voltage will cause catastrophic failure. * **Derating:** For maximum longevity, it is recommended to operate the capacitor at 80% of its rated voltage. * **Heat:** Ensure adequate airflow, as these parts generate heat during high ripple current operation.