South Korea dominates global DRAM and NAND flash supply through Samsung and SK Hynix. Korean-origin memory and semiconductors face only the 10% Section 122 surcharge, a 50-point advantage over China-origin semiconductor ICs (60% total). For memory-heavy applications — servers, workstations, AI hardware — the COO difference between Korean and Chinese memory is a significant cost factor.
On a $100,000 BOM, China incurs $60,000 in duty vs $10,000 from South Korea — a difference of $50,000 per order.
| Source | Duty Rate | Duty Amount | Landed Cost |
|---|---|---|---|
| 🇨🇳 China | 60% | $60,000 | $160,000 |
| 🇰🇷 South Korea | 10% | $10,000 | $110,000 |
| Savings from South Korea | $50,000 | $50,000 | |
* Estimate for electronics HTS chapters 8541–8542. Actual duty depends on specific HTS code, MPF, HMF, and customs value.Calculate exact duty →
No. Samsung and SK Hynix primarily manufacture DRAM and NAND in South Korea, which is not subject to Section 301. Only Samsung products assembled in China (e.g., some NAND at Xi'an Jiaotong facility) face the additional 50% Section 301 rate.
YMTC is on the US Entity List (added October 2022), restricting direct sales to US companies without a license. Most US buyers of NAND flash must use Samsung, SK Hynix, Kioxia, Micron, or Western Digital sources. This effectively eliminates YMTC as a procurement option regardless of tariff rates.
HBM3E from SK Hynix and Samsung is essential for AI accelerators (NVIDIA H100/H200/B200). At $3,000–10,000 per HBM stack, the 10% Section 122 duty adds $300–1,000 per unit. For a system with 8 HBM stacks, that's $2,400–8,000 in additional duty cost per server — material for large AI cluster deployments.
Samsung Electro-Mechanics (SEMCO) is a Samsung subsidiary that manufactures MLCCs, camera modules, and advanced PCB substrates in South Korea. SEMCO competes with Murata and TDK in MLCCs. Korean-origin SEMCO MLCCs face only 10% Section 122, versus 35% for Chinese MLCC makers.
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