High frequency PCB Manufacturer-Shenzhen Chengchi Circuit Technology Co., Ltd.

PCBA Functional Testing Items and Standards

PCBA functional testing is a critical quality control step that verifies whether the assembled printed circuit board assembly (PCBA) performs its intended electrical and functional operations according to the design specifications. Unlike online testing (which focuses on assembly defects), functiona

Apr 21, 2026 70

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Dimensional Control—Key Technologies and Practical Strategies for PCB Loss Management

Dimensional Control—Key Technologies and Practical Strategies for PCB Loss ManagementWith the widespread adoption of 5G, artificial intelligence, and high-speed data transmission technologies, PCB operating frequencies continue to rise, with some scenarios entering the millimeter-wave frequency rang

Apr 21, 2026 258

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Impedance Control and Material Selection Techniques for Multilayer PCB Lamination Stack-up

Impedance Control and Material Selection Techniques for Multilayer PCB Lamination Stack-upIn high-speed/high-frequency PCB design, impedance control is the core objective of stack-up design, and the selection of lamination dielectric materials along with thickness design are the keys to achieving pr

Apr 20, 2026 487

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PCBA Soldering Quality Inspection Points

PCBA soldering quality is the core guarantee of electronic product reliability, and its inspection needs to cover the entire soldering process, focusing on the appearance, structure and electrical performance of solder joints. First of all, the appearance inspection of solder joints is the most basi

Apr 18, 2026 289

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PCB Layout: Short, Straight, and Isolated Traces for Controlled Impedance

PCB Layout: Short, Straight, and Isolated Traces for Controlled ImpedanceIn the debugging of high-speed circuits and RF circuits, issues like signal reflection, crosstalk, and excessive radiation are common and often difficult to trace to their root causes. These problems mostly originate from the n

Apr 18, 2026 458

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The Deep Impact of PCB Parasasitic Parameters on Load Capacitance and Crystal Oscillator Frequency Accuracy

The Deep Impact of PCB Parasasitic Parameters on Load Capacitance and Crystal Oscillator Frequency AccuracyThe root cause lies in PCB parasitic parameters (parasitic capacitance, parasitic inductance, and trace resistance), which alter the actual load capacitance and indirectly affect crystal oscill

Apr 17, 2026 46