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ENIG Surface Finish: Process and Reliability

By Frank guo
2026年 9月 13日
PCB Assembly
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ENIG Surface Finish: Process and Reliability Electroless nickel immersion gold is the finish most often chosen when a board needs a flat, solderable and durable surface. It is also the finish most often blamed when a joint fails. The two facts are related, because ENIG is a two layer coating…

Mixed Technology PCBA Assembly

By Frank guo
2026年 9月 13日
PCB Assembly
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Mixed Technology PCBA Assembly Most production boards carry both surface mount and through-hole components, and that combination is called mixed technology. It is not a compromise but a deliberate arrangement, and the reason it persists is that each family does something the other cannot. What matters for assembly is the…

PCB Solder Mask: Purpose and Design Rules

By Frank guo
2026年 9月 13日
PCB Assembly
No Comments

PCB Solder Mask: Purpose and Design Rules Solder mask is the coloured coating on a finished board, and its appearance is the least important thing about it. The mask controls where solder can go, protects the copper from the environment and defines a set of spacing rules that a design…

Quick Turn PCB Prototyping: What Makes It Possible

By Frank guo
2026年 9月 13日
PCB Assembly
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Quick Turn PCB Prototyping: What Makes It Possible Quick turn fabrication is a scheduling service as much as a manufacturing one. The chemistry and the press cycles are unchanged, so the improvement comes from how the job is moved through the shop rather than from how fast the machines run.…

Designing a Heavy Copper PCB With 4 oz Copper

By Frank guo
2026年 9月 13日
PCB Assembly
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Designing a Heavy Copper PCB With 4 oz Copper Heavy copper boards exist because current has to go somewhere. When a design has to carry tens of amperes, the trace widths required on one-ounce copper become impractical: a 20 A trace at a 10 degree rise would be wider than…

PCB Minimum Order Quantity: Why It Exists and How to Work With It

By Frank guo
2026年 9月 13日
PCB Assembly
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PCB Minimum Order Quantity: Why It Exists and How to Work With It When a design is ready to be built, the first commercial question is usually how few boards can be ordered. The minimum order quantity is the smallest number a fabricator will accept for a single order, and…

PCB to Flex Circuit Connection: Five Techniques Compared

By Frank guo
2026年 9月 13日
PCB Assembly
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PCB to Flex Circuit Connection: Five Techniques Compared Connecting a rigid PCB to a flex circuit is one of the few places in electronics where the mechanical design and the electrical design are equally difficult. The joint must carry signals and power, survive bending and vibration, and remain manufacturable at…

AI and Smart Factory in PCB Manufacturing

PCB Assembly Cost: What Drives the Quote

By Frank guo
2026年 9月 13日
PCB Assembly
No Comments

PCB Assembly Cost: What Drives the Quote The question every project manager asks before a build is simple, and the answer is not. PCB assembly cost is the sum of the design, the parts, the process, the quantity, and the services attached to the order, and each of those has…

HDI PCB Advantages for Compact Electronics

By Frank guo
2026年 9月 13日
PCB Assembly
No Comments

HDI PCB Advantages for Compact Electronics Miniaturization is the force behind most HDI decisions. When a product has to shrink while carrying more function, the board runs out of room for routing long before it runs out of room for components, and the escape from a fine-pitch package becomes the…

Microsection showing pull-away between a plated barrel and laminate

PCBA Prototyping: How a Quick-Turn Service Works Step by Step

By Frank guo
2026年 9月 13日
PCB Assembly
No Comments

PCBA Prototyping: How a Quick-Turn Service Works Step by Step PCBA prototyping compresses the normal board and assembly flow into days rather than weeks, but it does not skip steps. Understanding the sequence helps a design team prepare the right data, avoid the delays that come from incomplete files, and…

ENIG Surface Finish: Process and Reliability

Mixed Technology PCBA Assembly

PCB Solder Mask: Purpose and Design Rules

Quick Turn PCB Prototyping: What Makes It Possible

Designing a Heavy Copper PCB With 4 oz Copper

PCB Minimum Order Quantity: Why It Exists and How to Work With It

PCB to Flex Circuit Connection: Five Techniques Compared

PCB Assembly Cost: What Drives the Quote

HDI PCB Advantages for Compact Electronics

PCBA Prototyping: How a Quick-Turn Service Works Step by Step

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