The **MLP331M400EB0A** is a high-reliability, flatpack aluminum electrolytic capacitor manufactured by **Cornell Dubilier (CDE)**. It is part of the MLP (Flatpack) series, known for its ultra-low profile and high energy density. --- ## 1. Technical Specifications The part number encodes specific electrical and physical characteristics: | Parameter | Specification | | :--- | :--- | | **Capacitance** | 330 µF (Microfarads) | | **Tolerance** | ±20% (indicated by 'M') | | **Voltage Rating** | 400 VDC | | **Temperature Range** | -55°C to +85°C | | **Service Life** | 10,000 Hours @ 85°C | | **Package Type** | Case EB (Flatpack Aluminum) | | **ESR (120Hz, 25°C)** | ~450 mΩ (Typical) | --- ## 2. Key Design Features ### Physical Structure * **Flatpack Case:** Unlike standard cylindrical capacitors, this uses a rectangular, flat aluminum housing. This design provides a large surface area for heat dissipation. * **Vibration Resistance:** The internal windings are compressed within the flat case, making it exceptionally rugged (up to 50g vibration resistance). ### Performance Advantages * **High Energy Density:** It offers significantly more energy storage per unit of height compared to standard snap-in or screw-terminal capacitors. * **Low Profile:** The "EB" case code refers to specific dimensions (approximately 1.75" x 1.5" x 0.5"), making it ideal for thin power supplies or aerospace modules. --- ## 3. Part Number Breakdown The nomenclature for **MLP331M400EB0A** is structured as follows: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | MLP | Military/Industrial Flatpack | | **Capacitance** | 331 | 33 + one zero = 330 µF | | **Tolerance** | M | ±20% | | **Voltage** | 400 | 400 Volts DC | | **Case Code** | EB | 1.75" Length x 1.5" Width | | **Insulation** | 0 | No sleeve (Standard) | | **Lead Style** | A | Standard 2-lead configuration | --- ## 4. Typical Applications Due to its high voltage rating and flat form factor, this part is commonly found in: 1. **Aerospace & Defense:** Power hold-up in cockpit displays or flight control systems. 2. **Medical Equipment:** High-voltage pulse circuits where space is restricted. 3. **Power Supplies:** DC link capacitors in slim-line AC/DC converters.