Hard Gold Surface Finish for Rigid flex PCB
Hard gold for Rigid flex PCB is a gold alloy with complexes of cobalt, nickel or iron. A low-stress nickel is used between gold over-plating and copper. Hard gold is not suitable for wire bonding.
We recommend using the hard gold surface finish for components and applications with heavy usage and a high likelihood of wear and tear, like:
- Edge Connector Fingers
- Interconnected Carrier Boards
- Keypads
- Contacts
The thickness of the hard gold surface finish will vary depending on the applications. When hard gold is used for compliance in military applications, the minimum thickness shall be 50 -100 micro inch.
Nonmilitary applications require 25 to 50 micro inches. Here are the recommended minimum and maximum thickness values:
- 17.8 μin is recommended for IPC maximum solderable thickness
- 25 μin gold over 100 μin nickel for IPC Class 1 & Class 2 applications
- 50 μin gold over 100 μin nickel for IPC Class 3 applications
Other news about S&L
- Celebrating the Establishment of SUNLYNN CIRCUITS(THAILAND)
- Good News! Sun&Lynn Circuits Co.,Ltd. is honored as one of the Top 100 Innovative Enterprises in Bao
- What Should You Know about Metal Core PCB?
- FPC supplier : the types of Flexible PCB
- PCB manufacturer China:Why PCB board snake line, what is it used for?
- What is Metal Core PCB and types of Metal Core PCB?
- Why are High frequency PCBs much more expensive than normal PCBs?
- Flexible PCB supplier China :When to use flexible PCB?
- Flexible PCB manufacturer:What Is Flex Soldering?
- What Is Automotive PCB? Why we use automotive PCB?
Your browsing history
- High frequency PCB:US Enterprises to Cooperate with Huawei to Develop 5G Network Standards
- Rigid flex PCB:Tesla issues recall for 250,000 cars in China?
- Common Reasons for High Frequency PCB Failure
- What Is Automotive PCB? Why we use automotive PCB?
- S&L is awarded as Green PCB manufacturer for the year of 2015
- PCB factory china:The latest black technology can turn skin seconds into touch screens.
- FPC supplier:What Is The Difference Between Flexible PCB Coverlay And Solder Mask Layer
- Multi-layer PCB factory explains what is VR
- Benz
- Metal core PCB:What are Aluminum-based PCB boards
A total of -comments【I want to comment】