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Updated by Gopal Radadia on Jul 27, 2018
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Types of PCBs

Sierra Assembly is one of the leading manufacturers of printed circuit boards in the US. Our advanced manufacturing capabilities and in-depth knowledge of best manufacturing practices have helped us become one of the most favored PCB assembly and manufacturing companies.



Single Sided PCBs

Single Sided PCBs feature one conductive layer, and are ideal for designs demanding low density. We have been delivering single sided PCBs across various industries.


Double Sided PCBs

As the name suggests, these PCBs comprise two conductive layers, which enable closer trace routing. These PCBs are ideal for higher technology applications.


Multilayered PCBs

These are the printed circuit boards featuring more than two layers. Most multilayer PCBs have three conductive layers, which offer high design flexibility to PCB designers.


Rigid PCBs

These PCBs are made from solid substrates that prevent it from twisting. These are one of the most popular types of PCBs manufactured by us. We use only industry-grade materials for PCB development. We can deliver these PCBs in a single layer, double-layer, and multilayer constructions.


Rigid Flex PCBs

These are hybrid printed circuit boards that feature a combination of both – rigid and flexible materials. Our rigid-flex PCBs are well-known for their weight and space reduction capabilities. Over the years, we have delivered rigid-flex circuit boards in a wide range of technologies, such as multilayer PCBs for various commercial applications to customized PCBs for specific applications.


Flexible PCBs

A flexible PCB is an arrangement of components and circuits that use various flexible based materials with flexible coverlay. Sometimes, these components and circuits are also assembled without flexible coverlay. These PCBs are popular among our customers because they find them easy to assemble, and are lightweight. The flexible PCBs are also ideal for applications that require flexible material. These circuit boards can be availed in single sided, double sided, and multilayer formats.


High-Density Interconnect (HDI) PCBs

Our advanced PCB technology capabilities have helped us win a recognition as one of the leading HDI PCB manufacturers in the market. These circuit boards have higher wiring densities per area than regular circuit boards. High density interconnects PCBs have finer spaces and lines, higher connection pad density, and smaller vias. HDI PCBs can be easily created from many high-performance materials.


Metal Core PCBs

These PCBs receive their name from metal bases, which serve as heat dissipaters. Base metals in PCBs are ideal alternatives to the regular CEM3 or FR4 circuit boards. These printed circuit boards have the ability to dissipate heat from the critical components, as well as from other less crucial areas such as metallic core, and metal heatsink backing. The metal core PCB can be made from aluminum (aluminum core PCB), copper (copper core PCB and heavy copper core PCB), and a mixture of several special alloys. The most common type of PCB is aluminum core PCB.


Mil Spec PCBs

We provide Mil Spec PCBs in MIL-PRF-55110, MIL-PRF-31032, and MIL-PRF-50884 specifications. We have delivered Mil Spec PCBs in rigid, flex, and rigid flex types. These PCBs are designed to withstand harsh working environments.


Radio Frequency (RF) PCBS

These printed circuit boards operate in high frequencies above 100 MHz. Sierra Assembly has developed RF PCBs for applications such as smart phones, sensors, security systems, and robotics. The demand for RF PCBs is on rise. We have built a reputation for ourselves as one of the leading RF PCB manufacturers in the US.


Burn in Boards

Burn in Process is usually performed on components of the printed circuit board. The components are electrically excited at 125°C to detect failure, as well as ensure their reliable performance. This process is facilitated by using burn-in circuit boards. Sierra Assembly provides one of the most reliable burn-in circuit boards in the USA.


Lead-Free PCBs

We have been providing a high-quality lead-free PCBs, since last many years. Our printed circuit boards doesn’t contain lead, hexavalent chromium compounds, lead and its compounds, PCDE (Polybrominated diphenyl ether) and PBB (Polybrominated biphenyl) compounds, and mercury. Also, we can provide printed circuit boards in lead-free finishes, such as 370 HR, 370 TURBO, FR406, GETEK, IS410, etc. Box Build Assemblies: We can provide simple and complex box build assemblies to clients.


Custom PCBs

If the printed circuit board requires specific dimensions, then it is ideal to opt for custom PCBs. We can create PCBs that meet your specific requirements. To know more about any of the above mentioned products, or PCB manufacturing capabilities, please feel free to contact us at the earliest.