## SD14-221-R Electronic Component Overview The **SD14-221-R** is a high-power, low-profile inductor part of the **SD14 Series** manufactured by **Eaton (formerly Cooper Bussmann/Coiltronics)**. It is primarily designed for high-density surface mount applications where space and efficiency are critical. --- ### 1. Technical Specifications The following table summarizes the core electrical and physical characteristics of the SD14-221-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 220 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 0.283 Amps | | **Saturation Current (Isat)** | 0.354 Amps | | **DC Resistance (DCR)** | 1.95 Ohms (Max) | | **Shielding** | Magnetically Shielded | | **Operating Temperature** | -40°C to +125°C | | **Dimensions** | 5.2mm x 5.2mm x 1.45mm | --- ### 2. Key Features * **Low Profile:** With a maximum height of only 1.45mm, it is ideal for ultra-thin electronic devices. * **Magnetic Shielding:** The construction minimizes Electromagnetic Interference (EMI), making it safe for use near sensitive circuits. * **Ferrite Core:** Utilizes a high-performance ferrite core material for low core losses and high efficiency. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and compliant with environmental regulations. --- ### 3. Common Applications Due to its small footprint and specific inductance value, the SD14-221-R is commonly found in: 1. **DC-DC Converters:** Used as an energy storage element in buck or boost regulators. 2. **Portable Electronics:** Integrated into smartphones, tablets, and wearables. 3. **LED Drivers:** Provides stable current regulation for backlighting or lighting modules. 4. **Battery Powered Systems:** Ideal for low-power handheld devices requiring efficient power management. --- ### 4. Part Number Breakdown ```text SD 14 - 221 - R | | | | | | | +-- RoHS Compliant | | +------- Inductance Code (221 = 22 * 10^1 = 220 µH) | +------------ Size/Series Identifier (14) +--------------- Series Prefix (Shielded Drum Inductor) ```