As reported by IC Insights, power transistors – the 12 billion dollar growth engine in the 21 billion dollar discrete semiconductor market – have faced a choppy uphill climb since surging in the 2010 recovery from the 2008-2009 economic recession. “Worldwide revenues for power transistors continue to increase by a compound annual growth rate (CAGR) of about 4%, but sales in the largest discrete products category have fallen in three out of the last five years because of ongoing economic uncertainty and quick cancellation of purchase orders by systems makers whenever they see signs of demand weakening for end-use electronic products”, said IC Insights’“2016 O-S-D Report: a market analysis and forecast for Optoelectronics, Sensors/Actuators, and Discretes”. After dropping 7% in 2015 to 12.3 billion dollar, power transistor sales are expected to stabilize and begin a modest recovery in 2016, growing by a little over 1% to 12.4 billion, according to the report. The research shows power transistor sales slowly regaining strength in the next few years, rising 3% in 2017 to 12.8 billion followed by 5% growth in 2018 to about 13.5 billion. Between 2015 and 2020, power transistor sales are projected to grow by a CAGR of 3.9% to 14.8 billion. The annual growth rate in the second half of this decade essentially matches the CAGR of 4% recorded in the last 10 years (2005-2015), but IC Insights anticipates much less volatility in the power transistor market because worldwide demand will continue to climb for greater energy efficiency in home appliances, battery-operated portable electronics, data center computers, industrial systems, automobiles and the explosion of connections to the Internet of Things. Worldwide shipments of power transistors are now forecast to rise by a CAGR of 6.5%, reaching 71.1 billion units in 2020 compared to about 52 billion in 2015. Among the power transistor product categories, sales growth is expected to be the strongest in high voltage field-effect transistors (FETs) and insulated-gate bipolar transistor (IGBT) modules during the second half of this decade. The report shows sales of high-voltage (over 200V) FETs growing by a CAGR of 4.7% to 2.4 billion dollar in 2020 while IGBT modules are expected to increase by an annual rate of 4% to 3.2 billion in five years. Other projected 2015-2020 CAGR growth rates for power transistor product categories are: 3.7% for low-voltage FETs (under 200V) to 5.6 billion; 3.8% for discrete IGBT transistors to 1.1 billion; and 3.1% for bipolar junction transistors to 886 million in 2020.