Exhibit 99.1

Contact:	Uzi Sasson
	Chief Financial Officer
	IXYS Corporation
	3540 Bassett Street
	Santa Clara, California 95054
	(408) 982-0700

IXYS CORPORATION ANNOUNCES 44.3% PROFIT INCREASE FOR ITS SECOND QUARTER OVER PRIOR YEAR’S QUARTER

SANTA CLARA, CA. November 1, 2005 — IXYS Corporation (NASDAQ:SYXI) today announced that, for the second fiscal quarter ended September 30, 2005, IXYS reported net revenues of $63.4 million, an increase of 3.3% as compared with net revenues of $61.4 million for the same period in the prior fiscal year.

Gross profit was $21.2 million, or 33.5% of net revenues, for the quarter ended September 30, 2005, as compared to gross profit of $19.5 million, or 31.8% of net revenues, for the same quarter in the prior fiscal year. Net income for the quarter was $5.5 million, or $0.16 per diluted share, as compared to a net income of $3.8 million or $0.11 per diluted share, in the same quarter for the prior fiscal year, an increase of 44.3%.

For the six month period ended September 30, 2005, IXYS reported net revenues of $126.7 million, an increase of 4.4% as compared with net revenues of $121.3 million for the same period in the prior fiscal year. Gross profit for the six month period ended September 30, 2005 was $42.4 million, or 33.4% of net revenues, as compared to gross profit of $36.7 million, or 30.2% of net revenues, for the same period in the prior fiscal year. Net income for the six month period was $10.7 million, or $0.30 per diluted share, an increase of 87.3% as compared to net income of $5.7 million or $0.16 per diluted share, in the same period for the prior fiscal year.

“We continued growth in our profitability for the interim period’s year over year. Our cash position has grown significantly even as we continue to invest in our proprietary technology and our business. We see continued demand in our power and telecommunication sectors, with overall book-to-bill ratio of 1.06 for the quarter, which is an improvement from that of last quarter,” said Dr. Nathan Zommer, Chief Executive Officer.

“We are cautiously optimistic about our next quarter and expect revenues for the December quarter to be relatively flat, as compared to our September quarter,” stated Uzi Sasson, Chief Financial Officer.

IXYS develops and markets primarily high performance power and RF semiconductors and control ICs that are used in controlling and converting electrical power efficiently in power systems for telecommunication infrastructure, motor drives, medical systems and transportation. IXYS also serves emerging markets with digital and analog ICs that control flat panel displays, medical instruments and telecommunication products.

Safe Harbor Statement

The foregoing press release contains forward-looking statements, including those related to our continuing investment in our proprietary technology and business; demand in our power and telecommunications sectors, our book-to-bill ratio, our cautious optimism and expectations for revenues in the December quarter. Actual results may vary materially from those contained in the forward-looking statements, due to changes in customer delivery schedules, the cancellation of orders, an unanticipated decline in our business, an unexpected increase or leveling of our costs or reduced cash flows, among other things. Further information on other factors that could affect IXYS is detailed and included in IXYS’ Form 10-Q for the fiscal quarter ended June 30, 2005, as filed with the Securities and Exchange Commission. IXYS undertakes no obligation to publicly release the results of any revisions to these forward-looking statements.

Additional information may be obtained by visiting IXYS’ website at http://www.ixys.com, or by contacting the company directly.

IXYS CORPORATION
CONDENSED CONSOLIDATED BALANCE SHEETS
(in thousands, except share data)
(unaudited)

	September 30,			March 31,
	2005			2005
ASSETS
Current assets:
Cash and cash equivalents	$	75,688		$	58,299
Accounts receivable, net		38,362			41,388
Inventories, net		48,082			51,411
Prepaid expenses		5,084			4,134
Deferred income taxes		6,776			6,649
Total current assets		173,992			161,881
Plant and equipment, net		39,114			27,814
Other assets		26,329			27,409
Deferred income taxes		2,543			2,787
Total assets	$	241,978		$	219,891
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of capitalized lease obligations	$	2,262		$	2,733
Accounts payable		12,713			12,962
Accrued expenses and other liabilities		28,855			22,123
Total current liabilities		43,830			37,818
Long term obligations, net of current portion		14,730			4,566
Pension liabilities		11,006			12,230
Total liabilities		69,566			54,614
Common stock, $0.01 par value:
Authorized: 80,000,000 shares; 33,970,685 issued and 33,491,683 outstanding on September 30, 2005 and 33,586,196 issued and 33,359,194 outstanding on March 31, 2005		340			336
Additional paid in capital		151,456			151,820
Notes receivable from stockholders		(57	)		(355	)
Retained earnings		16,175			5,492
Accumulated other comprehensive income		4,498			7,984
Total stockholders’ equity		172,412			165,277
Total liabilities and stockholders’ equity	$	241,978		$	219,891

IXYS CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF
OPERATIONS
(in thousands, except per share data)
(unaudited)

	Three Months Ended					Six Months Ended
	September 30,					September 30,
	2005		2004			2005		2004
Net revenues	$	63,385	$	61,385		$	126,726	$	121,339
Cost of goods sold		42,154		41,874			84,350		84,653
Gross profit		21,231		19,511			42,376		36,686
Operating expenses:
Research, development and engineering		4,083		5,071			8,239		9,623
Selling, general and administrative		9,903		8,151			19,162		17,527
Total operating expenses		13,986		13,222			27,401		27,150
Operating income		7,245		6,289			14,975		9,536
Other income (expense), net		785		(14	)		1,211		(217	)
Income before income tax provision		8,030		6,275			16,186		9,319
Income tax provision		2,486		2,434			5,503		3,615
Net income	$	5,544	$	3,841		$	10,683	$	5,704
Net income per share — basic	$	0.17	$	0.12		$	0.32	$	0.17
Weighted average shares used in per share calculation — basic		33,525		33,007			33,470		32,980
Net income per share — diluted	$	0.16	$	0.11		$	0.30	$	0.16
Weighted average shares used in per share calculation — diluted		35,758		34,484			35,871		34,773