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. | ![]() AdvancedPCB AdvancedPCB (also known as APCT) is a company that manufactures printed circuit boards (PCBs). | Hughes Circuits Hughes Circuits Inc (HCI) is a company that provides electronics manufacturing solutions. | ||
Founding Date | Founding Date 1986 | Founding Date 2008 | Founding Date 1989 | Founding Date 1977 | Founding Date 1999 |
Type | Type Private | Type Subsidiary | Type Subsidiary | Type Private | Type Private |
Tags | |||||
Locations | Locations Sunnyvale, US HQ Delta, CA | Locations San Jose, US HQ Shanghai, CN Shinjuku City, JP | Locations Aurora, US HQ Chandler, US Maple Grove, US Orange, US Placentia, US Santa Clara, US | Locations Aurora, US HQ Chandler, US Maple Grove, US Orange, US Placentia, US Santa Clara, US | Locations San Marcos, US HQ San Marcos, US San Marcos, US San Marcos, US San Marcos, US |
Employees | Employees 478 | Employees 3334% increase | Employees 1762% decrease | Employees 750 | Employees 250 |
Financial | |||||
Revenue (est.) | Revenue (est.) $108m (Y, 2024) | Revenue (est.) N/A | Revenue (est.) $89.5m (FY, 2022) | Revenue (est.) N/A | Revenue (est.) N/A |
Operating ⚠ | |||||
Capabilities | Capabilities 7 (Jun, 2024) | Capabilities N/A | Capabilities 11 (May, 2024) | Capabilities N/A | Capabilities N/A |
Certifications and Accreditations | Certifications and Accreditations N/A | Certifications and Accreditations N/A | Certifications and Accreditations N/A | Certifications and Accreditations 12 (May, 2024) | Certifications and Accreditations 5 (Dec, 2023) |
Certifications and Compliance | Certifications and Compliance 10 (Jun, 2024) | Certifications and Compliance N/A | Certifications and Compliance 16 (May, 2024) | Certifications and Compliance N/A | Certifications and Compliance N/A |
Industries Served | Industries Served 8 (Jun, 2024) | Industries Served N/A | Industries Served N/A | Industries Served 5 (May, 2024) | Industries Served N/A |
Manufacturing Space, sq. ft. | Manufacturing Space, sq. ft. 70 k (Jun, 2024) | Manufacturing Space, sq. ft. N/A | Manufacturing Space, sq. ft. N/A | Manufacturing Space, sq. ft. 390 k (May, 2024) | Manufacturing Space, sq. ft. N/A |
Product Categories | Product Categories 3 (Jun, 2024) | Product Categories 4 (Sep, 2023) | Product Categories N/A | Product Categories N/A | Product Categories N/A |

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