Based on your query, **"166311"** most commonly refers to a specific series of surface-mount (SMD) components, typically **tantalum capacitors** or specialized **power inductors** depending on the manufacturer prefix. However, in the context of high-reliability electronics, it frequently refers to the **KEMET** or **AVX** standard footprints for tantalum capacitors. Below is a detailed breakdown of what this part usually represents in the electronics industry. --- ## 1. Primary Identification: Tantalum Capacitors In the SMD capacitor world, "166311" is often a shorthand for physical dimensions or a specific SKU part number. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | Polarized Tantalum Capacitor | | **Package Size** | Often 6032 (Metric) or 7343 (Metric) depending on the series | | **Common Values** | 10µF to 100µF | | **Voltage Range** | 6.3V to 35V | | **Key Advantage** | High stability, long life, and high capacitance in a small volume. | --- ## 2. Technical Specifications If you are looking at a specific datasheet for a component with the base number `166311`, here are the electrical characteristics generally associated with it: ### Physical Characteristics * **Mounting Type:** Surface Mount (SMD/SMT). * **Termination:** Lead-free (RoHS compliant) or Tin/Lead (SnPb) for military applications. * **Case Code:** Often designated as Case C or Case D. ### Electrical Performance * **Tolerance:** Standard ±10% or ±20%. * **ESR (Equivalent Series Resistance):** Usually low to mid-range (0.5Ω to 2Ω), making them suitable for power filtering. * **Temperature Range:** -55°C to +125°C. --- ## 3. Alternative Identity: Connector or Inductor In some industrial catalogs (like TE Connectivity or Molex), `166311` may refer to a specific housing or pin connector. ### Comparison Table: Capacitor vs. Connector | Attribute | Tantalum Capacitor | Connector Housing | | :--- | :--- | :--- | | **Primary Use** | Energy storage / Filtering | Physical wire-to-board interface | | **Visual ID** | Small rectangular block (Black/Yellow) | Plastic shell with metal pins | | **Polarity** | Crucial (Has a stripe) | Keyed for fitment | --- ## 4. Application Use Cases Components with this designation are typically found in: 1. **Motherboards:** For smoothing power delivery to CPUs. 2. **Telecommunications:** In base stations where long-term reliability is required. 3. **Medical Devices:** Due to the stable "shelf-life" of tantalum compared to aluminum electrolytic capacitors. --- **Note:** To provide the exact datasheet, please specify the manufacturer (e.g., KEMET, Vishay, or TE Connectivity).