Thailand Semiconductor OSAT Deep Dive
Thai OSAT β ASEAN #2 after Malaysia. HANA, KCE, DELTA, CCET, SMT, Sumco, Onsemi, Seagate, WD. Wirebond, QFN, BGA, flip-chip, SiP. BOI Cat 5/8. Advanced packaging frontier.
Key takeaways
- 1
Thailand is ASEAN's #2 OSAT (Outsourced Semiconductor Assembly, Test) hub after Malaysia. ~150-200 OSAT-adjacent facilities across Lamphun, Ayutthaya, Bang Pa-In, Phetchaburi, Rayong industrial clusters.
- 2
Listed operators: Hana Microelectronics (SET: HANA) is the scale leader β Lamphun, Ayutthaya campuses. KCE Electronics (SET: KCE) specialises in PCB, substrate, assembly. Delta Electronics Thailand (SET: DELTA) EMS, power electronics. Cal-Comp Electronics (SET: CCET) Phetchaburi. Stars Microelectronics (SET: SMT).
- 3
Foreign captives: Onsemi Thailand Bang Pa-In (Fairchild Semi-origin), Seagate Thailand HDD, component, Western Digital Thailand. SUMCO Rayong (Sumitomo Mitsubishi Silicon) wafer supply.
- 4
Package mix: Wirebond IC packaging (legacy, cost-sensitive) ~, QFN, BGA, flip-chip (mid-complexity) ~, Wafer, final test, burn-in ~, SiP, module (mixed-tech) ~, Advanced packaging (2.5D, 3D, chiplet, heterogeneous) ~ (emerging frontier).
- 5
Customer base: Onsemi, Infineon, NXP, Texas Instruments, STMicro, Analog Devices, Broadcom, Samsung, Renesas. BOI Category 5, Category 8 incentives. Competes with Malaysia (Carsem, Inari, ViTrox), Vietnam (Intel Vietnam), China, Taiwan.
Executive summary
Thailand operates ASEAN's #2 OSAT hub after Malaysia. Approximately 150-200 OSAT-adjacent facilities cluster in Lamphun (HANA North), Ayutthaya (HANA, KCE), Bang Pa-In (Onsemi), Phetchaburi (Cal-Comp), Rayong (SUMCO wafer supply, industrial estates), and Bangkok, Samut Prakan metropolitan cluster (Delta, smaller operators). OSAT services: IC packaging (wirebond, QFN, BGA, flip-chip, SiP, module), wafer test, final test, burn-in test.[, , , , ]
Listed operators: Hana Microelectronics (SET: HANA) is the scale leader with Lamphun, Ayutthaya campuses; FY2024 revenue ~. Services span IC packaging, optoelectronics, microelectronics modules. KCE Electronics (SET: KCE) specialises in PCB, substrate, assembly; strong automotive, telecom customer base. Delta Electronics Thailand (SET: DELTA) is the EMS, power electronics, substrate scale player; Delta's global parent (Delta Electronics, TPE: 2308) is one of the world's top power-electronics, EV charging OEMs. Cal-Comp Electronics (SET: CCET) Phetchaburi operates EMS, OSAT, system integration. Stars Microelectronics (SET: SMT) covers IC packaging, module specialty.[, , , , ]
Foreign captives: Onsemi Thailand Bang Pa-In operates IC packaging (Fairchild Semi origin post-Onsemi acquisition) β automotive, industrial, power IC focus. Seagate Thailand HDD, component manufacturing; Western Digital Thailand similarly. SUMCO (Sumitomo Mitsubishi Silicon) Rayong produces 300mm, 200mm silicon wafers for global semi customers. Package mix: wirebond IC packaging (legacy, cost-sensitive) ~; QFN, BGA, flip-chip (mid-complexity) ~; wafer, final test, burn-in ~; SiP, module (mixed-technology) ~; Advanced packaging (2.5D, 3D, chiplet, heterogeneous integration) ~ β emerging frontier. BOI Category 5 (electronics, electrical), Category 8 (advanced manufacturing) incentives support OSAT capex, scale. Competitors: Malaysia (Carsem, Inari, ViTrox), Vietnam (Intel Vietnam packaging, test hub), China (JCET, Tongfu, Huatian), Taiwan (ASE Technology, Siliconware, Powertech). Advanced packaging (2.5D, 3D, chiplet, CoWoS-equivalent, heterogeneous integration) is the strategic growth axis β requires substrate, bumping, thermal, substrate-advanced capability build-out.[, , , , , , , , , ]
Package, service mix (% of FY2024 Thai OSAT revenue)
Wafer, final test, burn-in
Share %
Operators
Bundled service across all operators
| Package / service | Share % | Operators |
|---|---|---|
| Wirebond IC packaging | 32% | HANA, KCE, Onsemi β legacy, cost-sensitive |
| QFN, BGA, flip-chip | 28% | HANA, KCE, CCET, SMT β mid-complexity |
| Wafer, final test, burn-in | 16% | Bundled service across all operators |
| SiP, module | 16% | Delta, SMT, CCET β mixed-technology |
| Advanced packaging (2.5D, 3D, chiplet) | 8% | HANA, KCE nascent capability build-out |
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Key figures
Selected anchors from the report evidence pack.
Thailand OSAT rank in ASEAN
SEMI SEA chapter, FTI OSAT working group
Hana Microelectronics FY2024 revenue
HANA 56-1, consolidated financial statements
Wirebond share of Thai OSAT revenue
TrendForce, Gartner, IC Insights
Advanced packaging share of Thai OSAT
SEMI, TrendForce, DEPA-NSTDA-NECTEC-TMEC
Intel Vietnam packaging, test hub investment
Intel disclosures, SEMI SEA
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