Shares of International Rectifier Corp. sank as much as 19 percent to a new one-year low Tuesday after the company warned that first-quarter results would come up short of previous guidance due to an unexpected shift in the mix of product orders.

Shares of the El Segundo-based maker of power semiconductors fell 15.6 percent to settle at $34.37 on Tuesday. Shares of the company had slumped as low as $33.09, beating its one-year low of $33.71 from November of last year. Trading volume was nearly nine times the average volume.

Late Monday, International Rectifier announced that its revenue for its current first quarter is expected to be approximately $273 million, down about 3 percent from its fourth quarter revenue of $281.8 million, and its gross margin is expected to be 40.5 percent, compared with 43.5 percent in the previous quarter

The company said first-quarter earnings are anticipated to be 35 cents to 37 cents per diluted share. Adjusted earnings per diluted share not including charges from restructuring and severance activities are expected to be 40 cents to 42 cents per share.

Analysts, on average, had expected earnings of 51 cents per share on revenues of $288.1 million.

On July 28, International Rectifier said its first-quarter revenue was expected to be flat to up 4 percent and that gross margin was forecast to be flat to down 2 percentage points from the fourth quarter.

International Rectifier will release its first-quarter financial results on Oct. 27.