By now, I'm sure you've read about Infineon's (IFX: sentiment, chart, options) poor earnings report and equally weak guidance. What you might not have read about is that some of the company's weakness could be due to slowing production of Apple's (AAPL: sentiment, chart, options) iPhones. Specifically, Infineon produces the HSDPA wireless data chip used in the wildly popular smartphone.

According to Eric Savitz at Barron's "Tech Trader Daily" blog, "Buried in the long, confessional press release from Infineon about its woeful outlook is a tidbit that appears to confirm recent reports that Apple has slowed production of the iPhone." Savitz dug up the following from the report: "...revenues in the Wireless Solutions segment" in the December quarter "are anticipated to be strongly negatively impacted by the weakening of global demand and, in addition, by a reduction in demand at one specific customer." One specific customer? If you were wondering who, analysts at Citigroup and Dresdner Kleinwort have fingered Apple as the culprit.

Technically speaking, the poor report and abysmal guidance cost IFX 41% of its value today, with the shares blowing past former short-term support at the 2 level. IFX closed the session down 84 cents at $1.19 per share, after rebounding from a 52-week low of $1.16.