Exhibit 99.1

               Semtech Names Tony Giraudo Chief Operating Officer

    CAMARILLO, Calif.--(BUSINESS WIRE)--April 19, 2004--Semtech Corp.
(Nasdaq:SMTC), a leading supplier of analog and mixed-signal
semiconductors for communications, portable devices, computers and
industrial equipment, announced today that Anthony E. Giraudo has
joined the Company as Chief Operating Officer. The position was last
held in October 2003 by Jason Carlson, now Semtech's President and
Chief Executive Officer.
    As the company's Chief Operating Officer, Mr. Giraudo will oversee
all day-to-day operational activities and play a key role in new
product development. He will have responsibility for Semtech's six
product line business units and the operations group. The sales and
corporate marketing, finance, quality assurance, human resources and
business development groups will continue to report to Mr. Carlson.
    "Tony has a strong background in dealing with operational issues
and managing new product development," commented Jason Carlson. "I
expect that he will have an immediate impact on the organization and
will allow me more time to focus on growth opportunities for our
business."
    Mr. Giraudo has 26 years of experience in the semiconductor
industry, having started his career as an analog design engineer with
IBM Corporation. Most recently, he served as Chief Executive Officer
of TelASIC Communications, a spin-off from Raytheon based in El
Segundo, California. He has also held positions with Atmel, Honeywell
and NCR. Mr. Giraudo has both undergraduate and graduate level
technical degrees from the University of New Mexico.
    As an inducement to joining the Semtech team, the Company granted
Mr. Giraudo an option to purchase 200,000 shares of the Company's
common stock at an exercise price of $22.88, the closing price of the
stock on April 16, 2004, the trading date immediately preceding
today's grant date. This non-qualified stock option has a ten year
term, vests in four equal annual installments beginning April 19,
2005, and was granted in accordance with NASDAQ Marketplace Rule
4350(i)(1)(A)(iv).

    About Semtech

    Semtech Corporation is a leading supplier of high-quality analog
and mixed-signal semiconductor products. The company is dedicated to
providing customers with proprietary solutions and breakthrough
technology in power management, protection, advanced communications,
human interface, test and measurement, and high-speed clock/logic
products. Publicly traded since 1967, Semtech is listed on the NASDAQ
National Market under the symbol SMTC. For more information, contact
Semtech Corp. at 200 Flynn Road, Camarillo, CA 93012-8790; phone (805)
498-2111; email to info@semtech.com; or visit its Web site at
www.semtech.com.

    CONTACT: Semtech Corporation
             John Baumann, 805-480-2010 (Investor Relations)