Historical perspective: “conversion” from power
bipolar transistor to power MOSFET
Technology
1984 (HTE,
1991)
2015(IHS)
Bipolar Junction Transistor
$957 $881
MOSFET
$115 $6,034
Superjunction
MOSFET
$0 $895
IGBT
$0 $4,946
Total
(Less SJ MOSFET) $1,072
$11,861
1b
Power Transistor Market Size ($M)
› After 30 years of “conversion” the bipolar market is basically unchanged in
size (not accounting for inflation)
› New power transistor technologies nibbled at the edge of predecessor
technologies but basically established new markets enabled by higher
performance (frequency, power)
› Incumbent technologies are not easily “replaced”; rather a new technology
is adopted in new designs and new applications where it offers higher
overall efficiency , density or cost benefits (which vary greatly by market
segment)
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