Considerations for Gold Finger Bevel Design
2 min
- Technical Guidance
In our daily lives, we often come across products with a row of contacts on the PCB edge used for connections, which are known as PCB gold fingers. They are also referred to as "edge connectors", typically serving as the external connection interface for a PCB board when inserted into a slot.
Technical Guidance
So, what should you keep in mind when designing PCBs with gold fingers?
Excessive beveling of PCB gold fingers can result in the fingers not making proper contact with the mating equipment during assembly, leading to poor connectivity and potential usage issues.
Therefore, during the design phase, it's crucial to ensure that the length, width, position, bevel angle, and depth requirements of the gold fingers match the length of the fingers themselves. Be careful not to make the fingers too short or the bevel too thin, rendering them unusable. Additionally, make sure there is a sufficient safety margin between the gold fingers' edge and the board edge. In cases where this margin is insufficient, our engineering team will optimize the design.
Design Optimation
Here are the details:
The length and width dimensions after beveling a single board or a panel should not be less than 50mm.
Keep Learning
The Ultimate Guide to OSP Surface Finish in PCB Manufacturing: Advantages, Process, and Selection
Key Takeaways OSP (Organic Solderability Preservative) is a water-based, cost-effective PCB surface finish that deposits a 0.2-0.5μm organic film directly onto copper pads. Unlike metallic finishes such as ENIG or HASL, OSP provides superior surface flatness for fine-pitch SMT components at no extra process charge, making it ideal for high-density consumer electronics. However, OSP requires controlled handling and a limited assembly window (24-48 hours after opening vacuum packaging). It is best suite......
Optimizing Plating Thickness for Superior PCB Durability and Performance
Key Takeaways Plating thickness directly determines PCB durability, via reliability, and current-carrying capacity. Minimum hole wall copper: 20 µm (Class 2) / 25 µm (Class 3) per IPC-6012. Thicker copper (2 oz) significantly improves thermal performance and mechanical strength. Uniform plating requires good aspect ratio and process control to prevent cracking. Proper surface finish selection and reliable manufacturing are essential for long-term performance. Why do two boards that are the same act di......
Conformal Coating in PCB Technology: Benefits, Challenges, and Future Developments
If you're searching for conformal coating, you're likely looking for a reliable way to protect your PCB from moisture, dust, chemicals, or harsh environments. Choosing the right coating directly affects product reliability, performance, and lifespan. In this guide, you'll learn what conformal coating is, the main types available, and how to select the best option for your application. We'll also cover key benefits, application methods (manual, automated, and selective), as well as inspection, rework, ......
Preventing Black Pad Defects: Ensuring Reliable ENIG Finish in Professional PCB Manufacturing
Key Takeaways Black Pad is caused by excessive nickel corrosion during the ENIG immersion gold step, leading to brittle solder joints and hidden BGA/QFN failures. Key prevention methods: tight chemistry control (temperature, pH, time), consistent phosphorus content, and regular bath monitoring. High-reliability alternatives: ENEPIG (lowest risk) or nickel-free finishes like Immersion Silver and OSP. Always source ENIG from manufacturers with strict process controls. Ever get a great-looking board, wor......
Solder Mask Colors: Boost Your PCB Performance, Style & Reliability
Key Takeaways Solder mask color directly impacts AOI accuracy, thermal performance, and PCB reliability — it is not purely cosmetic. Green remains the industry benchmark for the highest manufacturing yields and fastest turnaround at no extra cost. White maximizes light reflection for LED applications, while black offers a premium aesthetic for high-end consumer products. Red and yellow provide superior visual contrast for prototyping, debugging, and safety-critical inspections. JLCPCB offers all seven......
Why Copper Oxidation Matters in PCB Design & How to Prevent It
Key Takeaways Copper oxidation is a critical concern in PCB design that directly impacts solderability, contact resistance, and long-term reliability. By understanding how oxidation forms and damages copper surfaces, designers can effectively prevent it through appropriate surface finishes (such as HASL, ENIG, and OSP), strategic solder mask application, and strict adherence to proper storage and handling practices per IPC-1601 guidelines. Protecting copper from oxidation ensures better assembly yield......