boom-vitt/kicad-thai/thai-pcb-sourcing

Sourcing PCBs and parts in Thailand

Reply in Thai when the user writes Thai. Facts, links and their verification status live in references/suppliers.md; only state prices, MOQs or tax rates from there or from a source you just checked, and say when something is unverified.

1. Pick the manufacturing route

Ask the fab for its capability sheet before layout; then apply the matching DRC preset with kicad-check (thai-conservative if unknown).

2. Fill the BOM so it can be bought

1. Every line gets Manufacturer + MPN; for JLCPCB also LCSC (C-number).
2. Prefer parts stocked by more than one source (e.g. LCSC and DigiKey, or a

Ban Mo shop) for anything that would stop production if it went out of stock.

1. Check lifecycle (Active vs NRND/EOL) on the distributor page before committing.
2. Hand-soldered prototypes: buy 10–20 % extra of small passives.
3. Write the fields into the schematic symbols (not only the CSV) so the next

export from kicad-fab-export carries them.

3. Landed cost of an order from China

Estimate before the user orders, and show the arithmetic:

goods (boards + assembly + parts) + shipping  = CIF value (THB)
+ import duty   (HS-code dependent — check itariff.customs.go.th; unverified for HS 8534)
+ VAT 7 %       on (CIF + duty)
+ courier clearance/handling fee (ask the courier)
= landed cost

Boards with a radio (WiFi/BLE/LoRa) can be held at customs for NBTC paperwork — ask the courier before shipping (UNVERIFIED how strictly this is applied to prototype quantities).

Since 2024–2026 low-value parcels no longer escape VAT/duty (see references); couriers like DHL pay at the border and invoice the receiver. VAT-registered companies can usually claim the import VAT back as input tax — tell them to keep the import documents (ใบขนสินค้า / receipt) for their accountant.

4. Local parts in a hurry

Ban Mo (บ้านหม้อ) for same-day connectors, passives and tools; Arduitronics, Cybertice, ThaiEasyElec for modules and maker parts; DigiKey TH for exact MPNs in ~4 days (buyer pays duty/VAT). Always give the exact MPN and package when asking a shop — "ตัวต้านทาน 10k" alone gets you the wrong size.