Overview
Streamline Circuits is a PCB manufacturer owned by Summit Interconnect that focuses on time-critical, complex boards. It produces rigid, rigid-flex, and multilayer flex PCBs, including high-layer-count designs with blind and buried vias, and targets high-mix, low-volume production and rapid prototyping. The company combines engineering and design-for-manufacturability support with close ties to advanced chip makers to serve demanding sectors like communications, military/aerospace, industrial electronics, instrumentation, and medical equipment. Its goal is to help OEMs bring new products to market quickly by delivering high-quality, complex PCBs on short timelines, such as turnaround in about 10 days for many advanced technology boards.
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Simplify's take
What believers are saying
- The November 10, 2026 Mega Circuit acquisition expands RF and microwave PCB capability.
- Summit now markets eight plants, strengthening cross-selling into defense and communications accounts.
- Active hiring and 36 postings in 2026 show continued demand despite slower growth.
What critics are saying
- A 74-worker Santa Ana closure on March 31, 2025 signals site rationalization.
- Revelio data shows headcount fell to 829 in 2026, down 3.3% year over year.
- Integration of Mega Circuit can distract management and erode margins through 2027.
What makes Summit Interconnect unique
- Eight North American plants create one-stop rigid-flex, assembly, and RF PCB coverage.
- Summit’s 2025 rebrand unified Advanced Assembly under one PCB manufacturing platform.
- Defense, aerospace, and quick-turn complex boards remain Summit’s durable specialty.
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