The **TP2-1R5-R** is a high-performance, surface-mount power inductor from the **TP series**, manufactured by **Eaton (formerly Cooper Bussmann/Coiltronics)**. This component is primarily designed for high-power density applications where space is limited but high current capability is required. --- ### 1. General Specifications The following table outlines the primary electrical and physical characteristics of the TP2-1R5-R: | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 1.5 µH | | **Tolerance** | ±20% | | **Rated Current (Irms)** | ~2.65 Amps (Typical) | | **Saturation Current (Isat)** | ~4.41 Amps (Typical) | | **DC Resistance (DCR)** | 0.038 Ohms (38 mΩ) Max | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Versa-Pac (Size 2) | | **Shielding** | Unshielded (High-frequency design) | --- ### 2. Key Features and Construction The "TP" series is known for its **Versa-Pac** design, which offers several engineering advantages: * **Toroidal Core Technology:** Uses a powdered iron or ferrite toroidal core, which provides excellent magnetic efficiency and lower electromagnetic interference (EMI) compared to standard open-core inductors. * **Pick-and-Place Compatible:** The flat top surface allows for high-speed automated assembly. * **Small Footprint:** Designed for high power density, allowing engineers to save PCB real estate in compact electronic devices. * **Robustness:** The "R" suffix indicates that the part is **RoHS compliant** (lead-free). --- ### 3. Applications The TP2-1R5-R is commonly found in power management circuits, specifically: * **DC-DC Converters:** Used in Buck, Boost, and SEPIC topologies. * **Voltage Regulator Modules (VRMs):** Providing stable current to CPUs and GPUs. * **Battery Powered Devices:** Ideal for handheld electronics due to the balance of size and efficiency. * **Filtering:** Used as an output filter inductor to smooth ripple current in switching power supplies. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: `TP 2 - 1R5 - R` 1. **TP:** Series Name (Versa-Pac Inductor). 2. **2:** Size/Frame code (Physical dimensions). 3. **1R5:** Inductance Value (1.5 microhenries; 'R' acts as the decimal point). 4. **R:** RoHS compliant.