LED lamp bead package gold wire, palladium-plated copper wire, copper wire, advantages and disadvantages.

Gold wire, palladium-plated copper wire, copper wire These wires refer to the wires connecting the LED chip (also called the wafer) and the external pins. Once the wire is faulty, the whole LED is scrapped. The importance of the wire. So the question is, what is the difference between gold wire, palladium-plated copper wire and copper wire?

Gold wire: packaged in gold wire

No need to introduce more, stable performance, high price, in the high-end packaging field forever tall, the main function of LED is bright, discoloration, etc., gold is generally used for anti-oxidation to ensure contact stability.

Palladium-plated gold and copper wire: packaged in palladium-plated gold and copper wire

Palladium-plated gold and copper wire is a product that replaces traditional gold wire in the LED industry. In recent years, the price of gold has been rising, and the price of gold wire used for Led packaging has also increased. At the same time, the price of Led products has been declining. Therefore, the cheap substitute, palladium-plated gold and copper wire, has emerged from time to time. 1. The price is cheaper, lower than the price of the gold wire, and higher than the price of the copper wire.

2. Solderability is better when soldering with copper brackets.

Copper wire: packaged in copper wire

1. The price of copper wire is low, and the copper wire of various specifications used in wire bonding has a cost of only 1/3-1/10 of gold wire, and has great application potential in reducing cost.

2. The high stiffness of the copper wire relative to the gold wire makes it more suitable for fine wire bonding.

3. The copper wire is easily oxidized and the bonding process is unstable.

4. Physical parameters such as hardness and yield strength of copper wire are higher than gold and aluminum.