## Technical Analysis of LPS5030-154ML The **LPS5030-154ML** is a high-performance, shielded power inductor manufactured by **Coilcraft**. It belongs to the LPS5030 series, which is designed for applications requiring a low profile and high current handling in a small footprint. --- ### 1. Key Technical Specifications The part number itself follows a specific nomenclature that defines its electrical characteristics. | Parameter | Value | Details | | :--- | :--- | :--- | | **Inductance** | 150 µH | Measured at 100 kHz, 0.1 Vrms | | **Tolerance** | ±20% | Indicated by the 'M' suffix | | **DC Resistance (DCR)** | 1.15 Ohms (Max) | Affects power loss and efficiency | | **SRF (Self-Resonant Freq)** | 7.0 MHz (Typ) | Frequency at which it ceases to be inductive | | **Isat (Saturation Current)** | 0.44 A | 30% drop in inductance | | **Irms (RMS Current)** | 0.55 A | 40°C temperature rise from ambient | --- ### 2. Component Construction & Features * **Magnetic Shielding:** The "LPS" series uses a magnetic epoxy resin to shield the inductor. This minimizes Electromagnetic Interference (EMI) and prevents the inductor from affecting nearby sensitive components on the PCB. * **Form Factor:** * **Dimensions:** Approximately 5.0 x 5.0 mm square base. * **Height:** 3.0 mm (Low profile). * **Termination:** Matte tin over nickel over silver-platinum-glass frit. * **Ruggedness:** Designed to withstand high vibration and thermal shocks typical in industrial environments. --- ### 3. Application Use Cases Due to its high inductance value (150 µH) and moderate current rating, this part is typically found in: 1. **DC-DC Converters:** Used as a storage element in buck, boost, or SEPIC converters. 2. **LED Drivers:** Providing constant current for lighting applications. 3. **Battery Powered Devices:** Ideal for handheld electronics where space (3mm height) is at a premium. 4. **Filtering:** Used in Pi-filters to smooth out ripple voltage in power supplies. --- ### 4. Part Number Breakdown ```text LPS 5030 - 154 M L | | | | | | | | | └─ Termination Code (L = RoHS compliant) | | | └─── Tolerance (M = ±20%) | | └────── Inductance Code (154 = 15 + 4 zeros = 150,000 nH = 150 µH) | └──────────── Size Code (5.0mm x 5.0mm x 3.0mm) └───────────────── Series Name (Low Profile Shielded) ```