The part number **398LMB035M2AE** refers to a high-performance **Aluminum Electrolytic Capacitor** manufactured by **Illinois Capacitor** (now part of Cornell Dubilier/CDE). This specific component is part of the **LMB series**, which is designed for high ripple current and long life in power supply applications. --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical and physical properties: | Property | Value | Description | | :--- | :--- | :--- | | **Capacitance** | 3900 µF | The storage capacity of the component. | | **Voltage Rating** | 35 VDC | Maximum continuous DC voltage it can handle. | | **Tolerance** | ±20% | Standard manufacturing variance (M code). | | **Termination Style** | Snap-In | 2-pin configuration for PCB mounting. | | **Operating Temp** | -40°C to +105°C | Designed for high-temperature environments. | | **Lifetime** | 3000 Hours | Rated at 105°C (exponentially longer at lower temps). | --- ## 2. Physical Dimensions The "M2AE" suffix in the part number provides information regarding the case size: * **Diameter:** 22 mm * **Length:** 30 mm * **Lead Spacing:** 10 mm (Standard Snap-in) --- ## 3. Key Features & Applications The **LMB Series** is characterized by its "Large Can" design, which allows for better heat dissipation and higher energy density. ### Key Features: * **High Ripple Current:** Capable of handling significant AC components riding on the DC signal without overheating. * **Low ESR:** Reduced Equivalent Series Resistance improves efficiency and reduces heat generation. * **Polarized:** This is an electrolytic capacitor; it must be installed with correct polarity. ### Common Applications: 1. **Switching Power Supplies (SMPS):** Used for output filtering and smoothing. 2. **Motor Drives:** Provides energy storage for industrial motor controllers. 3. **Audio Amplifiers:** Acts as a reservoir for power stages to handle peak demands. 4. **UPS Systems:** Used in DC link circuits for backup power. --- ## 4. Part Number Breakdown `398` | `LMB` | `035` | `M` | `2AE` ---|---|---|---|--- 39 + 8 zeros (pF) = **3900µF** | Series Name | **35 Volts** | ±20% Tolerance | Case Size Code (22x30mm)