The **AS30-R56K-RC** is a specialized electronic component, specifically a **Molded Unshielded RF Inductor** (Choke) from the AS30 series. These components are designed for high-frequency filtering and signal processing. ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's exact specifications: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **AS30** | Series Prefix | Molded Inductor Series (usually axial leaded) | | **R56** | Inductance Value | **0.56 µH** (R acts as a decimal point) | | **K** | Tolerance | **±10%** | | **RC** | Compliance | **RoHS Compliant** | --- ### 2. Technical Specifications The AS30-R56K-RC is characterized by its physical construction and electrical limits: * **Inductance:** 0.56 µH * **Tolerance:** ±10% * **Construction:** Phenolic or Ferrite core (depending on the specific sub-series) with a molded epoxy body for environmental protection. * **Form Factor:** Axial-leaded (through-hole mounting). * **Shielding:** **Unshielded**. This means it may radiate electromagnetic interference (EMI) or be susceptible to it if placed too close to other sensitive components. --- ### 3. Key Electrical Characteristics | Parameter | Typical Value | Description | | :--- | :--- | :--- | | **Q Factor (Min)** | 25 - 40 | Quality factor at a specific test frequency (usually 25.2 MHz). | | **SRF (Min)** | ~300+ MHz | Self-Resonant Frequency; the limit of its inductive behavior. | | **DCR (Max)** | ~0.15 - 0.35 $\Omega$ | DC Resistance; determines power loss and heating. | | **Rated Current** | ~500 - 800 mA | The maximum DC current the inductor can handle without overheating. | --- ### 4. Common Applications Due to its low inductance and high resonant frequency, this part is typically used in: 1. **RF Coupling/Decoupling:** Used to block high-frequency noise while allowing DC power to pass through in radio circuits. 2. **Filter Networks:** Part of LC (Inductor-Capacitor) filters in telecommunications equipment. 3. **Signal Conditioning:** Smoothing signals in high-speed data lines or oscillating circuits. 4. **Consumer Electronics:** Found in older TV tuners, radio receivers, and monitors. --- ### 5. Installation Note Since this is an **axial-leaded** part, it is intended for **Through-Hole Technology (THT)** assembly. If you are designing a modern, compact PCB, you might look for an equivalent **SMD (Surface Mount Device)** version, though the AS30 series specifically refers to the molded leaded type.