2026-07-03 15

Tenting Vias: The Standard Approach to Solder Mask Coverage and Its Limitations

Tenting Vias: The Standard Approach to Solder Mask Coverage and Its Limitations Introduction    Printed circuit board manufacturing has evolved significantly over the past several decades, driven by the rapid advancement of consumer electronics, telecommunications, automotive electronics, aerospace systems, industrial automation, and medical devices. As electronic assemblies become smaller, denser...

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2026-07-01 16

PTFE-Based Laminates: Ultra-Low Dielectric Loss for mmWave Applications

PTFE-Based Laminates: Ultra-Low Dielectric Loss for mmWave Applications Introduction    The rapid expansion of wireless communication technologies has dramatically transformed the performance expectations placed on printed circuit boards. Fifth-generation (5G) infrastructure, automotive radar, satellite communication, aerospace electronics, advanced imaging systems, and emerging sixth-generation (...

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2026-06-26 40

Rogers 4000 Series: Low-Loss Laminates for RF and Microwave Circuits

Rogers 4000 Series: Low-Loss Laminates for RF and Microwave Circuits Introduction    The continuous evolution of wireless communication has fundamentally reshaped printed circuit board technology. Applications that once operated comfortably at several hundred megahertz are now routinely designed for frequencies extending into tens of gigahertz. Fifth-generation cellular networks, automotive radar,...

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2026-06-24 30

Polyimide: Flexible and High-Temperature Performance for Aerospace and Medical

Polyimide: Flexible and High-Temperature Performance for Aerospace and Medical Introduction    As electronic systems continue evolving toward miniaturization, higher reliability, and operation under extreme environmental conditions, conventional substrate materials are increasingly reaching their performance limitations. Aerospace satellites, implantable medical devices, advanced military electron...

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2026-06-17 41

High-Tg FR-4: Thermal Reliability for Lead-Free Assembly and High-Temperature Environments 

High-Tg FR-4: Thermal Reliability for Lead-Free Assembly and High-Temperature Environments Introduction    As electronic products continue to evolve toward higher power density, miniaturization, and longer service life, the thermal demands placed on printed circuit boards (PCBs) have increased significantly. Modern electronic systems are no longer limited to simple consumer devices operating at ro...

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2026-06-12 100

FR-4: The Workhorse Laminate for Mainstream PCB Applications

FR-4: The Workhorse Laminate for Mainstream PCB Applications Introduction    Printed circuit boards form the foundation of nearly every modern electronic product, from smartphones and computers to industrial automation systems and automotive control modules. While numerous laminate materials are available in the PCB industry, one material has consistently maintained its position as the dominant ch...

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2026-06-10 52

Via Tenting with LPI Solder Mask: Process Control for Bubble-Free Coverage

Via Tenting with LPI Solder Mask: Process Control for Bubble-Free Coverage Introduction    As printed circuit boards continue to evolve toward higher density, smaller form factors, and greater functional integration, the requirements placed upon solder mask technology have increased significantly. Among the numerous techniques used to protect printed circuit boards, via tenting has become one of t...

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2026-06-05 56

Solder Mask Defined (SMD) vs. Non-Solder Mask Defined (NSMD) Pads for BGA Reliability

Solder Mask Defined (SMD) vs. Non-Solder Mask Defined (NSMD) Pads for BGA Reliability Introduction    Ball Grid Array (BGA) packaging has become one of the most important interconnection technologies in modern electronics. From smartphones and servers to automotive control systems and aerospace electronics, BGA components provide exceptional input/output density while maintaining compact package d...

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2026-06-03 64

Photoimageable Solder Mask: LPI Technology for Fine Feature Definition

Photoimageable Solder Mask: LPI Technology for Fine Feature Definition Introduction    Printed circuit boards have evolved dramatically over the past several decades. As electronic devices continue to become smaller, faster, and more complex, PCB manufacturing technologies must keep pace with increasingly demanding requirements. Among the many innovations that have enabled modern electronics, Phot...

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2026-05-29 83

Nickel-Palladium-Gold (NiPdAu): The Direct Bonding Finish for Semiconductor Packages

Nickel-Palladium-Gold (NiPdAu): The Direct Bonding Finish for Semiconductor Packages Introduction    As semiconductor packages continue to shrink while performance expectations continue to rise, surface finish technology has become one of the most critical factors in advanced PCB manufacturing and packaging reliability. Traditional surface finishes such as HASL, ENIG, OSP, and immersion silver eac...

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2026-05-27 79

Selective ENIG: Combining Gold Fingers with OSP on the Same Board

Selective ENIG: Combining Gold Fingers with OSP on the Same Board Introduction    Modern electronic products are moving toward higher integration, faster signal transmission, smaller form factors, and stricter cost targets. As a result, PCB manufacturers and design engineers must continuously optimize not only circuit layout and material selection, but also surface finish strategies. One increasin...

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2026-05-22 131

Hard Gold (Electrolytic Gold): Wear-Resistant Surface for Edge Connectors and Gold Fingers

Hard Gold (Electrolytic Gold): Wear-Resistant Surface for Edge Connectors and Gold Fingers Introduction    Printed circuit board surface finishes play a decisive role in the reliability, durability, conductivity, and long-term operational stability of electronic products. Among all available finishes, Hard Gold stands out as one of the most durable and wear-resistant solutions for demanding applic...

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