Sierra Circuits Sierra Circuits (also known as Sierra Proto Express) is a company that manufactures and assembles printed circuit boards. | ![]() Advanced Circuits Advanced Circuits (also known as AdvancedPCB, 4PCB) is a company that provides printed circuit board manufacturing and assembly solutions. | |
Founding Date | Founding Date 1986 | Founding Date 1989 |
Type | Type Private | Type Subsidiary |
Tags | ||
Locations | Locations Sunnyvale, US HQ Delta, CA | Locations Aurora, US HQ Chandler, US Maple Grove, US Orange, US Placentia, US Santa Clara, US |
Employees | Employees 478 | Employees 1762% decrease |
Financial | ||
Revenue (est.) | Revenue (est.) $108m (Y, 2024) | Revenue (est.) $89.5m (FY, 2022) |
Operating ⚠ | ||
Capabilities | Capabilities 7 (Jun, 2024) | Capabilities 11 (May, 2024) |
Certifications and Compliance | Certifications and Compliance 10 (Jun, 2024) | Certifications and Compliance 16 (May, 2024) |

Advanced Circuits (also known as AdvancedPCB, 4PCB) is a company that provides printed circuit board manufacturing and assembly solutions.
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