Custom Industrial High Reliability PCB | High-Frequency PCB

Industrial High-density interconnect (HDI) Printed Circuit Board
	Base Material	FR4
	Layers	4
	Dimensions	92*72
	PCB Thickness	1.6 mm
	Board Solder Mask Color	Black
	Silkscreen	White
	Surface Finish	ENIG 2U"
	Material Type	FR4 TG135
	Special Technics	4-Layer PCB impedance control, BGA packaging, ENIG Process Control, microvia

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Engineered for compact and high-reliability electronics, this 4-Layer FR4 TG135 with black solder mask and ENIG surface finish HDI board is fabricated through advanced industrial PCB manufacturing. The multilayer HDI PCB fabrication adopts a carefully controlled 4-layer stack-up structure to maintain dielectric thickness consistency and impedance matching across signal layers, ensuring stable signal integrity while minimizing crosstalk and attenuation in industrial electronic systems.

The HDI circuit board integrates BGA packaging support and fine-pitch routing, where dense routing channels and extremely small trace widths demand high etching precision, accurate layer registration, and reliable via quality during industrial PCB manufacturing to prevent open or short circuit risks. To ensure solderability and long-term reliability, the ENIG surface finish (2U") requires strict control of nickel and gold thickness uniformity, preventing issues such as incomplete plating, gold diffusion, or poor solder joints during assembly.

Additionally, the high-density PCB panelization design utilizes a 6-unit panelized layout to improve manufacturing efficiency, requiring careful management of material expansion, stress distribution, and depanelization processes to avoid warpage or dimensional variation between units. As a high-density bare PCB, the board is well suited for industrial automation modules, embedded control systems, and communication equipment requiring compact HDI structures.

With advanced industrial PCB manufacturing at our core, KnownPCB produce custom industrial HDI PCBs and complete PCB box build assembly services for compact, high-reliability electronics, strictly following your specified design.