We operate in one segment: the development, marketing, and sale of semiconductor products used in electronic devices and products. We generate our revenue from three broad product categories: the Mobile product market, the personal computing, or PC, product market, and the Internet of Things, or IoT, product market. We sell our products to original equipment manufacturers, or OEMs, and to contract manufacturers that provide manufacturing services to OEMs.

Net revenue within geographic areas based on our customers’ locations for the periods presented was as follows (in millions):

	Three Months Ended				Six Months Ended
	December 31,				December 31,
	2019		2018		2019		2018
China	$	138.2	$	251.7	$	315.0	$	479.5
Japan		149.5		78.0		212.7		146.5
Taiwan		56.4		61.0		121.6		137.4
South Korea		21.6		11.7		38.0		31.8
Other		20.5		13.9		37.0		29.3
United States		2.1		9.2		3.9		18.6
	$	388.3	$	425.5	$	728.2	$	843.1

Net revenue from our customers for each group of similar products was as follows (in millions):

	Three Months Ended				Six Months Ended
	December 31,				December 31,
	2019		2018		2019		2018
Mobile product applications	$	217.7	$	274.4	$	402.0	$	537.1
PC product applications		81.6		63.9		149.4		132.5
IoT product applications		89.0		87.2		176.8		173.5
	$	388.3	$	425.5	$	728.2	$	843.1

Net revenue from major customers as a percentage of total net revenue for the periods presented was as follows:

	Three Months Ended		Six Months Ended
	December 31,		December 31,
	2019	2018	2019	2018
Customer A	21%	*	15%	*
Customer B	13%	*	11%	*
Customer C	*	20%	*	19%
Customer D	*	14%	*	12%

We extend credit based on evaluation of a customer’s financial condition, and we generally do not require collateral. Major customer accounts receivable as a percentage of total accounts receivable were as follows:

	December 31,	June 30,
	2019	2019
Customer A	21%	*
Customer B	16%	*
Customer C	11%	25%
Customer D	*	16%