<h1>Semiconductor wafer fabrication notification governs specified business status, mandatory filing, and tax benefits under the prescribed form.</h1> Form 19 is the prescribed application for notification of a semiconductor wafer fabrication manufacturing unit as a specified business under section 46 of the Income-tax Act, 2025. It is required for assessee carrying on or proposing to carry on semiconductor wafer fabrication activity and is mandatory for claiming the associated tax benefits. The form seeks particulars of the assessee, the specified business, the proposed unit, commencement details, prescribed approvals, and confirmation that the unit is exclusively for semiconductor wafer fabrication, located in India, and operating under the required conditions.