Guides for engineers and buyers sourcing semiconductor parts, jigs and fixtures in Vietnam.https://semivietnam.com/https://semivietnam.com/blog/drawing-mistakes-unquotable/https://semivietnam.com/blog/drawing-mistakes-unquotable/The dozen drawing problems that send an RFQ back with questions instead of a price, why each one stalls a shop and the one line fix for each of them in turn.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/nda-when-drawings-cross-borders/https://semivietnam.com/blog/nda-when-drawings-cross-borders/What an NDA can and cannot protect when a drawing goes to a foreign shop, the clauses that matter in practice and the process controls that do the real work.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/packing-and-shipping-to-a-fab/https://semivietnam.com/blog/packing-and-shipping-to-a-fab/The last mile is where clean parts get dirty. Packing levels, bag choice, desiccant, crating, export documents and what to write on the drawing so it is priced.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/price-changes-between-orders/https://semivietnam.com/blog/price-changes-between-orders/Material moves, finishers requote, quantities drop and drawings quietly change. The legitimate reasons a repeat price rises, and how to hold one steady.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/reading-a-machining-quote/https://semivietnam.com/blog/reading-a-machining-quote/What each line in a machining quote means, which lines hide the real risk, how to normalise two quotes that look far apart and the questions that close the gap.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/second-sourcing-a-critical-part/https://semivietnam.com/blog/second-sourcing-a-critical-part/When a second supplier is worth the qualification, how to pick which parts get one, what to transfer and how to keep two shops honest without playing them off.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/spares-and-consumable-planning/https://semivietnam.com/blog/spares-and-consumable-planning/Which machined parts to hold, how to size the buffer, why ordering a spare with the original is cheaper and how to keep a wear part quotable years later.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/tolerance-stack-up-fixtures/https://semivietnam.com/blog/tolerance-stack-up-fixtures/Why every part passes inspection and the assembly still misses position: stack up basics, where to spend tolerance and how to specify the assembly itself.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/vietnam-taiwan-malaysia-machined-parts/https://semivietnam.com/blog/vietnam-taiwan-malaysia-machined-parts/What each origin is structurally good at for machined semiconductor hardware, where each is thin and how to decide without a price comparison nobody can verify.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/weldments-and-machine-frames/https://semivietnam.com/blog/weldments-and-machine-frames/Large welded bases and frames: weld sequence, stress relief, finish machining, flatness over a long span and why Vietnam is structurally strong at this work.Thu, 24 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/aluminum-alloys-semiconductor-parts/https://semivietnam.com/blog/aluminum-alloys-semiconductor-parts/6061, 7075, 5052 and cast tooling plate compared for chamber parts, jigs and handling hardware, with notes on stress relief, anodize response and flatness.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/cleanroom-machining-requirements/https://semivietnam.com/blog/cleanroom-machining-requirements/Cleanroom machining is a process chain, not a room. What changes in deburring, cleaning, finishing and packing when a part goes into a fab or a test line.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/esd-materials-and-coatings/https://semivietnam.com/blog/esd-materials-and-coatings/When static matters, which materials and coatings are used, what surface resistance ranges mean in practice and how to write an ESD requirement a shop can meet.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/first-article-inspection-report/https://semivietnam.com/blog/first-article-inspection-report/How to specify an FAI so it proves something: ballooned drawings, measurement methods, sample size, certificates and where PPAP fits for machined parts.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/flatness-parallelism-gdt/https://semivietnam.com/blog/flatness-parallelism-gdt/Why a plate that passes every dimension still rocks on the fixture: datum schemes, free state versus constrained and how to measure and report them properly.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/gas-delivery-components-machining/https://semivietnam.com/blog/gas-delivery-components-machining/Manifold blocks, fittings and gas sticks: internal surface finish, electropolish, dead volume, cleanliness and the tests worth requiring before shipment.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/hard-anodize-vs-electropolish/https://semivietnam.com/blog/hard-anodize-vs-electropolish/When Type III hard anodize on aluminum is right, when electropolished stainless wins and what each finish does to your dimensions, lead time and price.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/lead-time-and-finishing-bottlenecks/https://semivietnam.com/blog/lead-time-and-finishing-bottlenecks/A realistic breakdown of machining lead time: material, programming, machine queue, finishing batches and inspection, plus four levers that compress it.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/outgassing-and-rga-testing/https://semivietnam.com/blog/outgassing-and-rga-testing/Why a clean looking part raises base pressure, what residual gas analysis shows, which materials and finishes outgas most and how to write a usable requirement.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/peek-vespel-torlon-parts/https://semivietnam.com/blog/peek-vespel-torlon-parts/Plastic parts for sockets, insulators and handling hardware: grade choice, moisture and heat movement, fixturing and the tolerance that is realistic to ask for.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/rfq-package-checklist/https://semivietnam.com/blog/rfq-package-checklist/The files, specs and terms that make machining quotes comparable, the eight things buyers leave out most often and how each omission moves the price you get.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/semiconductor-parts-vietnam-sourcing/https://semivietnam.com/blog/semiconductor-parts-vietnam-sourcing/A checklist for buyers qualifying Vietnam machine shops for semiconductor parts, jigs and fixtures: capability, finishing chain, inspection, packing and export.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/stainless-and-nickel-alloys/https://semivietnam.com/blog/stainless-and-nickel-alloys/When 304 is enough, when 316L is required and when a nickel alloy is the only answer, with notes on passivation, electropolish and local availability.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/supplier-audit-questions/https://semivietnam.com/blog/supplier-audit-questions/A practical audit script for qualifying a precision machine shop: capacity, finishing chain, inspection, cleaning, export and the answers that should worry you.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/surface-finish-ra-guide/https://semivietnam.com/blog/surface-finish-ra-guide/What Ra means, which surfaces need which number, how finish is measured and why a single blanket note on the drawing can double the price of a simple part.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/test-handler-change-kits/https://semivietnam.com/blog/test-handler-change-kits/Nests, pockets, socket plates and guides for IC test handlers: materials, tolerance on locating features, ESD requirements and how to manage kit lead time.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/test-jig-fixture-cost/https://semivietnam.com/blog/test-jig-fixture-cost/Where the money goes on probe plates, burn-in jigs and assembly fixtures: setup, flatness, hole count, finishing, inspection and what to change first.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/vacuum-chamber-parts-machining/https://semivietnam.com/blog/vacuum-chamber-parts-machining/Aluminum and stainless chamber parts: weld sequence, o-ring grooves, surface finish, leak testing and the documentation to require with every shipment.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/vietnam-semiconductor-buildout-2026/https://semivietnam.com/blog/vietnam-semiconductor-buildout-2026/Amkor, Intel, Hana Micron and Samsung are expanding test and packaging capacity in Vietnam. What that changes for buyers sourcing machined parts locally.Mon, 21 Sep 2026 00:00:00 GMThttps://semivietnam.com/blog/wafer-handling-end-effectors/https://semivietnam.com/blog/wafer-handling-end-effectors/End effectors, blades and carriers: material choice, flatness, edge and burr control, static handling and what to specify so parts do not shed particles.Mon, 21 Sep 2026 00:00:00 GMT