Based on the model number **AISC-1210-R39**, this part belongs to a specific series of **Wire-Wound Ferrite Chip Inductors**. These are commonly used in power management and signal filtering circuits. Below is a detailed breakdown of its specifications and characteristics. --- ### 1. Part Number Deciphering The part number can be broken down into its technical attributes: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | AISC | High Current / General Purpose Wire-Wound Inductor | | **Size (Inch)** | 1210 | Dimensions: 0.12 x 0.10 inches (3.2 x 2.5 mm) | | **Inductance** | R39 | **0.39 µH** (R denotes the decimal point) | | **Tolerance** | (Variable) | Typically J (±5%), K (±10%), or M (±20%) | --- ### 2. Key Technical Specifications While specific values may vary slightly by manufacturer (such as Abracon), the standard parameters for the **AISC-1210-R39** are as follows: * **Inductance:** 0.39 µH * **DC Resistance (DCR):** Generally low, typically ranging between **0.10 Ω to 0.25 Ω**. * **Rated Current (Ir):** Usually capable of handling **450mA to 800mA**, depending on the specific sub-series. * **Self-Resonant Frequency (SRF):** Typically high (above **250 MHz**), making it suitable for high-frequency applications. * **Operating Temperature:** -40°C to +125°C. --- ### 3. Construction and Features * **Wire-Wound Technology:** Uses a copper wire wound around a ferrite core. This provides higher Q-factors and higher current handling compared to multilayer ceramic inductors. * **Ferrite Core:** Provides high magnetic permeability, allowing for a compact size while maintaining significant inductance. * **SMD Design:** The 1210 package is designed for automated surface-mount assembly (Pick-and-Place). --- ### 4. Common Applications Due to its balance of size and current capacity, the R39 (0.39 µH) inductor is used in: 1. **DC-DC Converters:** For voltage regulation in portable electronics. 2. **EMI Suppression:** Filtering high-frequency noise in power lines. 3. **RF Circuits:** Used in impedance matching and decoupling. 4. **Signal Conditioning:** Maintaining signal integrity in telecommunication equipment. ---