Wholesale Four-Layer Double-Sided Greenened Gold Semi-Hole Plate

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Four-Layer Double-Sided Greenened Gold Semi-Hole Plate

A four-layer double-sided PCB board, employing advanced half-hole (half-buried hole) technology and green solder mask combined with electroless gold plating (ENIG) surface treatment, is specifically designed for high-end electronic products with strict requirements for space and reliability. Its core advantages lie in: The half-hole design achieves precise electrical connections at the module edges, significantly enhancing assembly density and integration; The electroless gold plating surface provides excellent flatness, weldability, and oxidation resistance for the pads, ensuring long-term reliability; The four-layer structure provides a stable power layer and a complete ground plane, effectively optimizing signal integrity and suppressing electromagnetic interference. This board is an ideal choice for communication modules, industrial control motherboards, high-end consumer electronics, and portable medical equipment, among others.

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Material

 FR-4, aluminium-based, ceramic, metal, copper-based, high-frequency, rigid-flex combined, halogen-free

Board thickness

 0.3 - 6mm

Copper thickness

 0.5oz - 5oz

Number of layers

 1 - 32 layers

Origin

 Anhui, China

Surface treatment

 Ordinary tin plating, lead-free tin plating, OSP, nickel/gold plating, blue tape, silver plating, tin plating

Minimum hole diameter

 0.25mm

Minimum line width

 3mil (0.075mm)

Minimum line spacing

 0.075mm

Ratio of board thickness to hole diameter

 10:3

Product Overview

Four-Layer Double-Sided Greenened Gold Semi-Hole Plate is a 4-layer FR-4 multilayer PCB with green solder mask and ENIG electroless nickel immersion gold surface finish. It adopts half-hole (semi-hole) edge-plating technology, whose half-hole copper edges work as module contact pins for direct soldering connection. Stack-up, semi-hole dimension, copper thickness and gold thickness shall be validated through Gerber review and engineering assessment to match modular assembly requirements.

Typical Applications

  • Communication modular products
  • Industrial control motherboards
  • High-end consumer electronic modules
  • Portable medical equipment
  • IoT wireless transceiver modules

Key Features

  • Special semi-hole process forms edge contact pins for compact modular soldering, eliminating extra connectors
  • Four-layer stack-up provides independent power and ground planes to optimize signal integrity and suppress EMI
  • Green solder mask fits automated SMT vision positioning and AOI inspection
  • ENIG finish delivers flat pads, good oxidation resistance and stable long-term solderability
  • Substrate grade, semi-hole size and copper weight can be customized per project specifications

FAQ

Q: What special points need attention for semi-hole PCB design?
A: Semi-hole dimension, hole-wall copper thickness and layout shall be confirmed in engineering review; improper design may bring burr or assembly-related risks.

Anhui Hongxin Electronic Technology Co., Ltd. is located in the China PCB Industrial Park, Guangde Economic Development District, Anhui Province. Established in October 2013, our factory occupies 20,000 square meters and employs 110 staff members, including over 7 professional engineers with more than 15 years of experience. The company's PCB products include 1-32 layer boards, high-Tg boards, thick copper boards, rigid-flex boards, high-frequency boards, hybrid dielectric laminated boards, buried via boards, metal-based boards, and halogen-free boards. High-precision PCB rapid prototyping is available, with bulk orders for single- and double-sided boards delivered within 6-7 days, 4-8 layer boards within 9-20 days, 10-16 layer boards within 20-25 days, 16-32 layer boards within 25-45 days, HDI boards within 25 days, and double-sided prototyping deliverable as quickly as 24 hours. We are committed to providing high-quality products and professional services to global customers, and we have the capability to deliver both large quantities and small batches. The surface treatment processes of our products are complete. The base material types include FR-1, 22F, CEM-1, CEM-3, FR-4 (with high Tg, halogen-free, etc.), high-frequency boards, and metal substrates. All product types have passed ISO9001, ISO14001, ISO45001, IATF16949 international quality management system certifications, as well as UL safety certifications. Our sales network extends from inland areas to Southeast Asia, Europe, and America. In the fierce market competition, we have always received high praise from customers.
About
Anhui Hongxin Electronic Technology Co., Ltd.
Anhui Hongxin Electronic Technology Co., Ltd.
Anhui Hongxin Electronic Technology Co., Ltd. is China Four-Layer Double-Sided Greenened Gold Semi-Hole Plate Suppliers and Wholesale Four-Layer Double-Sided Greenened Gold Semi-Hole Plate Factory. It is located in China P C B Industrial Park, Guangde Economic Development District, Anhui Province. Established in October 2 0 1 3, our factory occupied 8, 413 square meters and employs 110 staff members, including over 7 professional engineers with more than 15 years of experience. The company's P C B products include 1- 32 layer boards, high Tg boards, thick copper boards, rigid-flex boards, high- frequency boards, hybrid dielectric laminated boards, buried via boards, metal-based boards, and halogen- free boards. High-precision P C B rapid prototyping is available, with bulk orders for single and double -sided boards delivered within 6 - 7 days, 4 - 8 layer boards within 9 - 20 days, 10 - 16 layer boards within 20 - 25 days, 16 - 32 layer boards within 25 - 45 days, H D I boards within 25 days, and double- sided prototyping deliverable as quickly as 24 hours. We are committed to providing high-quality products and professional services to global customers, and we have the capability to deliver orders of both large quantities and small batches. The surface treatment processes of our products are complete. The base material types include FR-1, 22F, CEM-1, CEM-3, FR-4 (with high Tg, halogen-free, etc.), high-frequency boards, and metal substrates. All product types have passed ISO9001, ISO14001, ISO45001, IATF16949 international quality management system certifications and UL safety certifications. Our sales network extends from inland areas to Southeast Asia and Europe and America. In the fierce market competition, we have always received high praise from customers.
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