Gowanda’s SMRF1210S-391JLF is a high-quality molded shielded inductor designed for demanding applications. With a compact size of 3 × 2.16 × 2.06 mm and a weight of just 0.05 g, it is ideal for space-constrained environments. This surface-mount technology (SMT) component belongs to the SMRF1210S series and is suitable for COTS+ grade applications. It features an inductance of 3.9 µH, a direct current resistance (DCR) of 0.83 Ω, and a current rating of 0.441 A DC. The inductor operates effectively within a frequency range, with a self-resonant frequency (SRF) of 42 MHz and a test frequency of 7.9 MHz, ensuring a minimum quality factor (Q MIN) of 40. It offers a tolerance of ±5% and is RoHS compliant with Sn100 termination finish. The core is made of ferrite, and it operates reliably in temperatures ranging from -55°C to +125°C. The inductor is packaged in tape and reel (T&R) format, has a moisture sensitivity level (MSL) of 1, and is fungal inert, making it a robust choice for various electronic applications.