source:Industry News release time:2022-04-11 Article author:sznbone Popular:pcb
PCB hard gold: Hard Gold; soft gold soft Gold
Electroplating soft gold is to precipitate nickel and gold on the circuit board by electroplating, and its thickness control is more flexible. Generally, it is used for making aluminum wires on COB (Chip On Board), or the contact surface of mobile phone buttons, and most of the electroplating gold used for gold fingers or other adapter cards and memory is hard gold, because it must be wear-resistant.
To understand the origin of hard gold and soft gold, it is best to first understand the process of electroplating gold. Leaving aside the previous pickling process, the purpose of electroplating is basically to electroplate "gold" on the copper skin of the circuit board, but if "gold" and "copper" are in direct contact, there will be a physical reaction of electron migration and diffusion (potential potential). Therefore, we must first electroplate a layer of "nickel" as a barrier layer, and then electroplate gold on top of nickel. Therefore, what we generally call gold electroplating should be called "electroplating nickel gold".
The difference between hard gold and soft gold is the composition of the gold that is finally plated. When gold plating, you can choose to electroplate pure gold or alloy. Because the hardness of pure gold is relatively soft, it is also called "soft gold". ". Because "gold" can form a good alloy with "aluminum", COB will specially require the thickness of this layer of pure gold when making aluminum wires.
In addition, if you choose to electroplate gold-nickel alloy or gold-cobalt alloy, because the alloy will be harder than pure gold, it is also called "hard gold".
Read recommendations:
Six-layer Immersion Gold Board (BGA)
Six-layer Immersion Gold Board (BGA)
Several problems in PCB circuit board design,Tantalum capacitor PCB Vendor
Popular recommended products
Six-layer Immersion Gold Board (BGA)
2021-05-24Six-layer Immersion Gold Board (BGA)
2021-05-27High frequency PCB
2021-04-27Computer card board (four layers)
2021-04-25Six-layer Immersion Gold Board (BGA)
2021-05-27Six-layer Immersion Gold Board (BGA)
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-04-27Single-sided double-layer AL base PCB
2021-04-27High frequency PCB
2021-04-27Silver oil perforated plate (double-sided)
2021-04-27Network communication board (sixth floor)
2021-04-29Six-layer Immersion Gold Board (BGA)
2021-05-27Aluminum substrate (double-sided)
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-05-27Six-layer Immersion Gold Board (BGA)
2021-04-27Laminate copper-based PCB after 4L (sample)
2021-04-27High frequency PCB
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-04-27High frequency PCB
2021-04-27Single copper base PCB
2021-04-27Mobile phone template (six layers)
2021-04-27Display board (six layers)
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-05-24Six-layer Immersion Gold Board (BGA)
2021-04-26Mobile phone board
2021-05-27Mobile phone board
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-04-26SMT stickers
2021-05-27DIP plugin
2021-05-27SMT stickers
2021-05-27Six-layer Immersion Gold Board (BGA)
2021-04-26DIP plugin
2021-05-27Six-layer Immersion Gold Board (BGA)
2021-04-26Six-layer Immersion Gold Board (BGA)
2021-04-26Related Information
Composition of PCB
2024-09-29What is the difference between PCB and PCBA
2024-09-10PCB usage tips
2024-08-20Why do the circuit boards are green
2024-08-12How to clean the aluminum substrate?
2024-08-06Maintenance of Chemical Copper Plating Solution on PCB Board
2024-07-22single-sided PCB board and double-sided PCB board
2024-07-15PCB board production process flow
2024-07-09PCB CTI level
2024-07-01Via technology in circuit board factory.Automotive Electronics PCB
2024-06-25The role of FPC flexible circuit board solder mask
2024-06-18Detailed explanation of PCB board sampling production process
2024-06-11pcb v-cut depth standard
2024-05-27Multilayer Printed Circuit Board.What is the eq of PCB
2024-05-20The relationship between PCB safety distance and voltage
2024-04-22SMT surface mount processing.Hybrid circuit board PCB
2024-04-15PCB enterprises should pay attention to SMT matters.Electronic components PCB
2024-04-03PCB - the core building block of electronic products.Automotive Electronics PCB
2024-03-25PCB - the bridge and link of the electronic world
2024-03-18How to define high-frequency and high-precision circuit boards.Industrial Electronics PCB
2024-03-11USB PCB interface layout and wiring requirements
2024-01-22Electrolytic capacitor PCB.Steps for using PCB pins
2024-01-15Automotive ElectronicWhat aspects should be considered when processing and manufacturing PCB boards?
2024-01-08Electrolytic capaciWhat is the difference between a gold-plated circuit board and a gold-plated one?
2023-12-25When grinding PCB boards, attention should be paid to.Oscillator (belonging to crystal) PCB
2023-12-18Industrial Electronics PCB!What precautions should be taken when copying and grinding PCB boards
2023-12-11Do you know who is more suitable for LED direct display, regarding the difference between PCB board
2023-12-05Aluminum electrolytic capacitor PCB.What are the standards for selecting PCB boards
2023-11-27Surface Mount Technology (SMT) Phase PCB
2023-11-20Oscillator (belonging to crystal) PCB.The main functions of PCB board
2023-11-13
CopyRight © 2007-2024
粤ICP备2021061255号
Address:
1205, Floor 12, Building 3, Chuangyi Office Building, No. 110, Ziheng West Road, Jinsha Community, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China
Tel:
+86-755-29662580
Email:
sales@victoriapcb.com
PCB
PCBA
Service
Process
Tel: +86-755-29662580
Email: sales@victoriapcb.com
中
current position:
