Double-Sided Aluminum PCB with Immersion Gold

This printed circuit board (PCB) features a double-sided sandwich aluminum substrate configuration, specifically engineered for high-heat-dissipation applications. It adheres to strict dimensional and performance criteria to fulfill the operational requirements of high-reliability electronic systems.

PCB Specifications

What is a Metal Core Printed Circuit Board (MCPCB)?

A Metal Core Printed Circuit Board (MCPCB) is a specialized type of PCB that utilizes a metal substrate—most commonly aluminum, though copper or iron may also be used—as its core, replacing the traditional FR-4 insulating substrate. Its primary function is to enhance heat dissipation, addressing the issue of heat buildup in high-power electronic components such as LEDs and power amplifiers. Acting as a heat conductor, the metal core efficiently transfers heat generated by components to an external heat sink, thereby improving component reliability and extending their service life. In comparison to conventional PCBs, MCPCBs offer superior thermal conductivity, mechanical strength, and electromagnetic shielding capabilities.

Differences Between Double-Layer Sandwich Aluminum Substrate and Double-Layer Single-Side Aluminum Substrate

Double-Layer Sandwich Aluminum Substrate

Structural Features: The core of this substrate is a layer of aluminum. Insulating layers (e.g., PP, PI) are attached to both the upper and lower surfaces of the aluminum core, with a layer of copper foil pressed onto the outer side of each insulating layer to form two separate upper and lower circuit layers.

Simple Understanding: The aluminum core is positioned in the middle, with circuit layers on both sides—similar to a "sandwich cookie," where the aluminum serves as the filling and the two copper layers act as the cookie layers. Both sides can conduct heat to the aluminum core, enabling uniform heat dissipation across the entire board.

Double-Layer Single-Side Aluminum Substrate

Structural Features: Unlike the sandwich structure, this type of substrate only has an aluminum substrate on one side to serve as the heat dissipation layer, while the other side is made of ordinary insulating materials such as FR-4. Although it has two copper foil layers (located on the top first and second layers), only the side with the aluminum substrate can effectively conduct heat to the aluminum core.

Simple Understanding: Aluminum is only present on one side of the board, and the opposite side does not contribute to heat dissipation. It can be visualized as a "double-layer board with aluminum on one side," where the heat dissipation effect is limited to the side containing the aluminum core.

Company Profile

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd is an established high frequency PCB supplier and exporter in Shenzhen China, severing cellular base station antenna, satellite, high frequency passive components, microstrip line and band line circuit, millimeter wave equipment, radar systems, digital radio frequency antenna and other fields worldwide for 18 years. Our high frequency PCBs are mainly built on 3 high frequency material brands: Rogers Corporation, Taconic and Wangling. Dielectric constant ranges from 2.2 to 10.2 etc.

Bicheng PCB is headquartered in Shenzhen, a city with great economic vitality. Based in China, we adhere to the philosophy of servicing small and medium sized companies offering variety of circuit boards to meet the demands of market.

Main Business & PCB Applications

We maintain the highest standards which support products that exhibit exceptional quality, performance and reliability. We also have divisions of FR-4 circuit board, flexible circuits and metal core PCBs featured as prototypes, small runs to mass production. We actively research and build such high value added PCB projects as HDI, quick turn, impedance control, heavy copper and backplane board etc. This has made our PCB products generate an effective prolongation and complementation, as well as formation of integrated products line ranging from low-end to high-end.The circuit boards are used in the industries of home appliances, portable and consumable electronics, medical filed, aerospace as well as telecommunications etc.

Main Material Partners