8541.21.00 - With a dissipation rate of less than 1 W

This HTS category, 8541.21.00, specifically covers transistors with a dissipation rate of less than 1 Watt. These are semiconductor devices designed to amplify or switch electronic signals, and their low power dissipation is a key distinguishing characteristic. This classification is relevant within the broader scope of transistors, which are a fundamental component in modern electronics.

The primary sibling to this category is 8541.29.00, which encompasses "Other" transistors. The crucial distinction lies in the power dissipation rating. While 8541.21.00 is exclusively for transistors dissipating less than 1 Watt, 8541.29.00 includes all other transistors, regardless of their power dissipation capabilities, which would typically be 1 Watt or greater. Therefore, the decision between these two codes hinges directly on the specified dissipation rate of the transistor.

Within the subcategories of 8541.21.00, we find a further division based on the form of the transistor. "8541.21.00.40: Unmounted chips, dice and wafers" pertains to transistors in their raw, unprocessed state, before being integrated into a larger component or package. The subsequent subdivision, ": Other:", accounts for all other transistors fitting the < 1W dissipation criteria that are not in the unmounted form, including those that are mounted or assembled into various semiconductor packages.