Hard Gold Surface Finish for Rigid flex PCB
Article source：Editor：Sun&Lynn
Mobile
phone view
Sweep!
Sweep!
Popularity：1487Dated ：09-15-2021 10:07【big well Small】
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.
.jpg)
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：Flexible rigid PCB ApplicationsOther news：PCB supplier china：Bare Boards PCB Tests
Other news about S&L
- Scan to Discover Your Past Life? See How PCB Factories Use Traceability Systems to Create a Quality
- Joining Hands with AI to Forge the New Future of Smart Manufacturing at Sun&Lynn Circuits
- Sun&Lynn Circuits CO., Ltd. was invited to attend the Sixth Global Customs AEO Conference!
- 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?
Your browsing history
- What is the difference between an Aluminum PCB and a Metal Core PCB
- Lamination machine
- PCB factory china：how to fix PCB warpage
- PCB manufacturer China：What’s the type of PCB surface treatment?
- Flexible PCB manufacturer：What are the classifications of dry film photoresists in FPC board
- What are the benefits and advantages of the rigid-flex PCB board
- Health care PCB manufacture environment
- Ruipu Beiguang
- "Softening the Hardness" Helps to Connect All Things
- How to corerct solder balls before occurrence for Health care PCB
A total of -comments【I want to comment】