A kan sandunan ƙwaƙwalwar kwamfuta da katunan zane -zane, za mu iya ganin jere na faranti na taɓa zinare, waɗanda ake kira “yatsun zinare”. In PCB design and production industry, Gold Finger, or Edge Connector, is used as the outlet of the board through the Connector Connector. Next, let’s understand the processing method and some details of the gold finger in PCB.

Goldfinger PCB surface jiyya

1, electroplating nickel gold: thickness up to 3-50U “, because of its excellent conductivity, oxidation resistance and wear resistance, is widely used in the need to often plug and pull out of the goldfinger PCB or need to often carry out mechanical friction ON the PCB board, but because of the high cost of gold plating, only used in the local gold plating process such as goldfinger.

2, heavy metal, thickness of conventional 1 u “, up to 3 u “because of its superior electrical conductivity, smoothness and weldability, are widely used in such as buttons, binding IC, BGA design of high precision PCB, goldfinger PCB for wear-resisting performance requirements is not high, also can choose the whole plate zedoary process, and the process cost is electric gold process cost is much lower. Launin gindin zinariya shine launin ruwan zinari.

PCB yatsa zinare cikakkun bayanai

1) Don haɓaka juriya na yatsun zinare, yatsun zinare galibi suna buƙatar a rufe su da zinare mai wuya.

2) Yatsa na zinare yana buƙatar juyawa, yawanci 45 °, wasu kusurwoyi kamar 20 °, 30 °, da sauransu. Idan babu chamfering a cikin ƙira, akwai matsala; An nuna 45 ° chamfering a cikin PCB a ƙasa:

3) Golden finger needs to do the whole block blocking welding window opening process, PIN does not need to open the steel net;

4) Mafi qarancin tazara tsakanin kwanon rufi da kwanon kwanon azurfa da saman yatsa shine 14mil; It is recommended that the pad should be more than 1mm away from the finger, including the through-hole pad;

5) Do not lay copper on the surface of the finger;

6) All layers of the inner layer of gold finger need to be coppered, usually with a width of 3mm; Can do half finger coppers and whole finger coppers.

D: Shin “zinare” na yatsin zinariya ne?

Da farko, bari mu fahimci manufofi guda biyu: zinare mai taushi da zinare mai wuya. Zinariya mai taushi, yawanci taushi mai laushi. Hard zinariya, yawanci mahadi na gwal mai wuya.

The main role of gold finger is to connect, so it must have good electrical conductivity, wear resistance, oxidation resistance, corrosion resistance.

Because pure gold (gold) is relatively soft, gold fingers generally do not use gold, but just a layer of “hard gold (gold compound)”, which can not only get good electrical conductivity of gold, but also can make it wear resistance, oxidation resistance.

Don haka PCB bai yi amfani da “zinare mai taushi” ba? Tabbas ana amfani da amsar, kamar farfajiyar lambar wasu maɓallan wayar hannu, waya ta aluminium akan COB (Chip On Board). Amfani da zinare mai taushi gabaɗaya shine ruwan hakar zinari na nickel a cikin electroplating akan allon da’irar, sarrafa kaurin ya fi na roba.