By Kristin Jones 
 

Silicon Motion Technology Corp.'s (SIMO) fourth-quarter profit fell 35% as the semiconductor-products maker said its sales of LTE transceivers decreased.

The company's American depositary shares fell 11% to $13.05 as results fell short of Street expectations, and Silicon Motion gave a downbeat revenue outlook for the current quarter. Through the close Monday, the ADS were down 5.1% over the past six months.

For the first quarter, the company expects revenue to fall 15% to 25% from the fourth quarter, indicating a range of $53 million to $60 million. Analysts polled by Thomson Reuters recently projected revenue of $68 million.

Silicon Motion makes controllers used in mobile-storage media like flash-memory cards and flash drives, as well as multimedia systems on chips used in MP3 players and cameras. The company's income has mostly grown over the past year, thanks to double-digit revenue growth.

Chief Executive Wallace Kou said the latest quarter's revenue was negatively impacted as the third quarter saw accelerated sales of LTE transceivers for Samsung Electronics Co. (SSNHY, 005930.SE) smartphones.

Mr. Kou said LTE sales will decrease sequentially in the first quarter, "as Samsung's flagship smartphone and tablet models are in transition."

He added that a large customer is "rebalancing its card and wafer sales, and this will negatively affect sales temporarily in the first quarter."

Sales are expected to pick up in the second quarter, Mr. Kou said.

For the fourth quarter, the company reported a profit of $7.9 million, or 23 cents an ADS, down from $12.2 million, or 37 cents an ADS, a year earlier. Excluding stock-based compensation and other items, per-ADS earnings fell to 36 cents from 47 cents.

Revenue rose 5.1% to $70.6 million.

Analysts were expecting per-ADS earnings of 39 cents on revenue of $72.5 million.

Gross margin narrowed to 43% from 49.7%.

Looking ahead to the full year, Silicon Motion expects revenue to grow 10% to 20% from 2012, indicating $309.5 million to $337.6 million and bracketing consensus estimates of $319 million.

Write to Kristin Jones at kristin.jones@dowjones.com

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