South Korea’s semiconductor exports have surged to a historic high, delivering a major boost to Asia’s fourth-largest economy while simultaneously raising questions about long-term stability.
Semiconductor exports jumped 209% year-over-year to a record $46.65 billion in August, accounting for 47.5% of the country’s total goods exports of $98.25 billion that month.
The Ministry of Trade, Industry and Resources attributed the surge primarily to AI infrastructure demand, as large cloud providers including Google and Amazon expanded their capital spending programmes.
Jeff Ng, head of Asia macro strategy at Sumitomo Mitsui Banking Corporation, told CNBC that chips were overwhelmingly behind the headline growth figures for the month.
“In my estimate, semiconductor exports accounted for nearly 80% of export growth in August,” Ng said, adding that “overall export growth was driven by chips, computers, and higher petroleum product prices.”
While such growth is broadly welcomed, the pace of expansion has prompted concern among economists about the consequences of any sudden reversal in chip demand.
Dave Chia, an economist at Moody’s Analytics, cautioned that the underlying structure of the South Korean economy makes it particularly vulnerable to a rapid shift in semiconductor fortunes.
“A gradual slowdown would be manageable. An abrupt stall is a different matter, because the economy already runs at two speeds, and the sectors that would need to take up the slack are the ones under pressure today,” Chia said.
Monetary policy adds another layer of risk to the outlook, with the Bank of Korea raising its base rate to 3% in August, its second consecutive hike, as core inflation remained elevated.
Chia warned that if chip demand cools while policy is still tightening, “the windfall fades when domestic demand isn’t strong enough to take over.”
Traditional export sectors are already showing signs of strain, with automobile exports falling 29.8% year-over-year in August, though the trade ministry attributed much of the decline to summer-holiday timing and partial strikes.
Persistent headwinds including US tariffs and a structural shift toward production in American plants pose additional challenges for South Korea’s automotive sector beyond the short-term disruptions.
Not all indicators point to vulnerability, however, with the Bank of Korea noting in its August monetary policy decision that the recovery in consumption is gradually accelerating.
The Ministry of Trade, Industry and Resources data also showed that non-semiconductor exports climbed 20% in August, suggesting some breadth to the overall export recovery.
Homin Lee, senior macro strategist at Swiss private bank Lombard Odier, said South Korea could still sustain annual real growth of around 2% to 3% even if semiconductor momentum faded, provided other cyclical sectors held up.
SMBC’s Ng expects overall export growth to remain positive over the next 12 months, though he acknowledged it could moderate because of base effects and stabilising prices.
Lee said he would not characterise South Korea’s technology export dependence as “over-reliance” given the country’s other cyclical sectors that tend to perform well when the broader global economy is healthy.
SK Hynix and Samsung Electronics, two of the country’s most prominent chip producers, remain central to the semiconductor story as South Korea’s stock market increasingly serves as a bellwether for global AI sentiment.