Semtech Corp. has requested a hearing on whether the company will be delisted from the Nasdaq National Market, the semiconductor manufacturer announced Tuesday. Camarillo-based Semtech was notified by Nasdaq that it would be delisted because it had not complied with filing required reports on its fiscal quarter that ended April 30. The company wants a Nasdaq Listing Qualifications Panel to review the staff determination to remove Semtech from the Nasdaq National Market. Semtech is late in filing Form 10-Q because of an internal review of its stock option practices in light of an informal Securities and Exchange Commission inquiry, the company said. Semtech is a leading supplier of analog and mixed-signal semiconductors used in a wide range of computer, industrial and communications applications.