BV301S12010 is a sealed power transformer from Zettler Magnetics' EI30-10.5 series, engineered for low-power applications requiring galvanic isolation between primary and secondary circuits. The transformer features a 12V ±10% secondary output with a rated capacity of 1VA and a maximum secondary current of 83 mA, delivering a no-load voltage of 19.9V. It incorporates a split bobbin design with isolated primary and secondary windings, self-extinguishing UL94V-0 plastics, and a dielectric strength of 4200Vrms, ensuring safety and reliability in harsh environments. The compact design with a maximum height of 22.3 mm, combined with inherent short-circuit protection and vacuum-sealed resin Class B construction, makes it ideal for consumer electronics, industrial control systems, and medical device applications where space efficiency and safety compliance are essential.