professional gold finger pcb at discount fingers for wholesale

Why design gold finger

A unique PCBA needs to be interconnected with the motherboard, but it also needs to be easily replaced. Design a gold finger connected to socket, similar to the relationship between the power plug and socket.Because gold has good conductivity, inertia is strong, it can ensure the conductive effect while not oxidizing, at the same time, it can also ensure good enough conductivity after frequent insertion because gold is wear-resistant.

Generally speaking, the golden finger means that these fingers are plated with 5-30u”hard gold. Hard gold has better wear resistance, and can be guaranteed 20,000 times insertion without affecting the quality, it must be more than 5u”thick. However, the processing technology of hard gold is relatively complex, and the high thickness of gold consumes more gold salt, which directly results in high cost. In fact, many PCBs do not need frequent insertion, do not need to do thick gold, or even do not do hard gold, directly do immersion gold replacement (soft gold, gold thickness is generally 1-3 u”). It can effectively reduce the purchase price of PCB.

Some common applications of golden fingers are:

◪ Provide interconnection points for transmitting network data.
◪ Where a sub-board or dedicated adapter is attached
◪ Connect external components to the prototype PCB
◪Use as an audio adapter

professional gold finger pcb at discount fingers for wholesale-1

professional gold finger pcb at discount fingers for wholesale-2

Elctroplate process

ENIG: ENIG is more cost-effective and easier to solder than the electric gold plating. But its soft and thin (usually 2-5u ")composition makes the ENIG unsuitable for achieving the abrasion effect caused by the circuit board insertion and removal.
Electroplated Hard gold: This gold is solid (hard) and thick (usually 30u "), so it is more ideal for achieving the abrasive effects caused by constant PCB usage.

There are many meticulous steps involved in the process of plating gold fingers. To ensure that all of these fingers and slots fit, each PCB must pass a series of inspections and defect tests.

TYPES OF GOLD FINGER

Standard gold finger：Gold fingers are of equal length.
Staged gold finger PCB ：The etching pattern of the golden finger position needs to be realized by multiple film pasting, exposure and solder masking. The position and pattern need to be strictly and accurately controlled.
Long-short gold finger PCB：Its process is similar to the staged gold finger, which requires multiple exposure and electroplating to obtain the graphics of the long- short gold finger and requires the following design rules: plated holes, SMD and pads should not be placed within 1.0 millimeters of the gold finger; plated pads cannot exceed 40 millimeters in length.

As more and more technologies rely on gold fingers, it is vital that we have them plated and tested to meet the highest standard and to ensure the highest performance. Rocket PCB provides the PCB with the highest quality for customers from different industries with our extensive experience.

Staged gold finger production demo

professional gold finger pcb at discount fingers for wholesale-4

Key dimensions control

professional gold finger pcb at discount fingers for wholesale-5

Product compare

professional gold finger pcb at discount fingers for wholesale-6

Our advantages and services

◪ 24 hour real-time technical support
◪ Quick turnaround with 24 hours and instant quote
◪ Effective and flexible PCB engineering solutions save your cost
◪ State-of-the-art PCB including rigid, FPC, rigid-flex, metal base, RF/microwave, hybrid, HDI, embedded, LED, backplane, ceramic substrate, IC substrate
◪ Strong partnerships with different reputed material suppliers such as Rogers, Arlon, Nelco and Taconic can realize a fast service to a wide range of PCB applications
◪ Superb quality are guaranteed under the ISO9001, ISO14001, TS16949, OHSAS18001, ISO/IEC27001 system, insist on adopting 5S methods, Lean Six Sigma quality systems
◪ Complete service from free DFM, traceable manufacturing to complete after-sales service
◪ On time delivery more than 99%

Product application

professional gold finger pcb at discount fingers for wholesale-7

Consumer electronics

professional gold finger pcb at discount fingers for wholesale-8

Automotive electronics

professional gold finger pcb at discount fingers for wholesale-9

Communications

professional gold finger pcb at discount fingers for wholesale-10

Energy

professional gold finger pcb at discount fingers for wholesale-11

Industrial & Instrumentation

professional gold finger pcb at discount fingers for wholesale-12

IOT/Smart Home

professional gold finger pcb at discount fingers for wholesale-13

Medical electronics

professional gold finger pcb at discount fingers for wholesale-14

Security Industry

v******f

The new series of gold finger pcb mainly use gold finger pcb materials. It is granted with appearance design patents and utility model patents

g******h

All of our gold finger pcb are designed and customized as required including color, print, pattern and logo. The product itself has a heat-resisting property

q******u

gold finger pcb is developed for higher performance and gold finger pcb. It is very easy to install and use

w******e

Such material of gold finger pcb makes its colors more abundant. The product has the advantages of heavy tension and impact resistance

f******k

gold finger pcb selected by Rocket PCB Solution Ltd. are superior materials for gold finger pcb. With a firm and solid structure, it is anti-collision

z******f

gold finger pcb has long service life and many other technical superiorities, is especially suitable for gold finger pcb field. It is widely used in oil, transportation, auto, and other industries