Import Castellated Holes Pcb — Buy in Bulk from Supplier in China

King Sun Pcb Technology Co., Ltd. offers a 4‑layer printed circuit board featuring castellated half‑wall holes, built on a FR4 High Tg (S1000‑2) substrate with a board thickness of 1.8 mm. Each layer carries 1 oz copper and the surface finish is ENEPIG, providing excellent solderability and corrosion resistance. The design incorporates buried routed channels between layers 3 and 4, and partial‑depth holes to accommodate high‑density routing. Minimum order quantities are not disclosed in the listing and should be confirmed with the supplier.

In the PCB industry, FR4 High Tg material typically exhibits a dielectric constant (Dk) of about 4.5 and a glass transition temperature near 210 °C, supporting reliable operation in high‑temperature environments. Standard trace width and spacing of 2.7 mil are common for fine‑pitch designs, while a minimum via diameter of 0.15 mm enables dense interconnects. ENEPIG finish is often chosen for its flat copper surface and ability to support wire‑bonding and gold‑finger applications. Typical copper weight ranges from 1 oz to 10 oz, allowing designers to balance current‑carrying capacity and board thickness.

These boards are used in IoT devices, telecommunications equipment, medical instruments and automotive electronics where compact size and reliable high‑frequency performance are required. King Sun’s quick‑turn capability can produce a 4‑layer board within two business days, supporting fast‑prototype cycles. Importers should verify the exact MOQ, lead time and any special handling requirements directly with the supplier. Trade terms, Incoterms and payment conditions are to be negotiated on a case‑by‑case basis.

King Sun Pcb Technology Co., Ltd. is situated in Zone B3, Huayuan Science Park, Bao‑an District, Shenzhen, China. The company is listed under the harbour trust tier, indicating a verified business profile, although public response statistics are not available. Their manufacturing focus includes high‑density interconnector multilayer PCBs, HDI boards, metal‑core PCBs and specialised products such as castellated‑hole assemblies.

Since its expansion in 2005 into metal‑core PCBs, King Sun has supplied boards for LED lighting, automotive electronics and a broad range of hi‑tech industries. The catalogue highlights capabilities such as blind and buried vias, impedance control and heavy‑copper options, positioning the firm as a versatile partner for both prototype and mass‑production projects.