The **TCDA0707-R80M** is a high-performance, surface-mount (SMD) power inductor typically used in automotive and industrial electronics. This specific part number follows the naming conventions of manufacturers like **Pulse Electronics** (specifically their automotive-grade power inductor series). --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Code Segment | Description | Specific Value | | :--- | :--- | :--- | | **TCDA** | Series Identifier | Automotive grade, shielded power inductor | | **0707** | Dimensions | Approx. 7.5mm x 7.5mm footprint | | **R80** | Inductance Value | 0.80 µH (Microhenries) | | **M** | Tolerance | ±20% | --- ### 2. Key Technical Specifications While exact values can vary slightly by brand, the **0707-R80M** profile generally matches these parameters: * **Inductance:** 0.80 µH. * **DCR (DC Resistance):** Very low, typically ranging from 1.5mΩ to 3.0mΩ to minimize power loss. * **Isat (Saturation Current):** The current at which inductance drops by a specific percentage (usually 30%). For this size, it is typically around **20A - 30A**. * **Irms (Heating Current):** The continuous current that causes a 40°C temperature rise. Usually rated between **15A - 25A**. * **Operating Temperature:** Typically -40°C to +125°C or +150°C (AEC-Q200 qualified). --- ### 3. Core Features and Construction The TCDA series is designed for rugged environments: 1. **Molded Construction:** The coil is embedded in a metal alloy powder body. This provides "soft saturation" characteristics (inductance drops gradually rather than abruptly). 2. **Magnetic Shielding:** The molded body acts as a natural shield, reducing Electromagnetic Interference (EMI) to surrounding components. 3. **AEC-Q200 Compliance:** These parts are tested for high vibration, thermal shock, and moisture resistance, making them suitable for under-the-hood automotive applications. --- ### 4. Common Applications Due to its high current handling and low profile, the TCDA0707-R80M is used in: * **DC/DC Converters:** Voltage regulation in automotive infotainment or ADAS systems. * **Power Supplies:** High-efficiency Point-of-Load (POL) converters. * **Motor Drives:** Small BLDC motor control circuits. * **Battery Management Systems (BMS):** Filtering and energy storage. ---