The golden line purity content of the golden lines when encapsulated LED lamp beads is more than 99.99%. The gold with this material is then produced by the brushed process. In addition to containing 99.99%of the gold elements, this gold also contains less than 1%of others. Trace elements. One of the components of the core of LED lamp beads is the golden line. The golden line is a bridge connecting the luminous chip and the welding point, which plays a decisive factor for the service life of LED lamp beads. So how to identify the purity of the golden line?

The identification of the LED gold wire can use the ICP purity detection method, the mechanical performance detection method, and the EDS component detection method to determine the purity of the LED gold wire

Using the ICP purity detection method can identify the purity level of the golden line and determine the added alloy element.

1. Looking at the appearance of the LED lanterns golden line, first look at the surface of the golden line without a cavity, pit, scratching, cracks, raised, discounts, and other despair of the service life of the device. In the process of pulling the golden line, the surface defects on the surface of the silk material will cause the current density to increase, make the damage parts easily burned, and the ability to resist mechanical stress will be reduced, resulting in a break at the internal lead damage. Secondly, the surface of the golden line should be no oil pollution, rust, and other adhesives, which will reduce the key convergence strength between the golden line and the LED lamp chip, the golden line and the bracket.

2. There is a diameter deviation between the dedicated golden line and the unqualified golden line for LED lamp beads. 1 gram of gold can draw a gold thread with a length of 26.37m and a diameter of 50 μm (2 mil). , Golden line of 25 μm (1 mil). The length of the golden line is fixed. If the diameter of the golden line is half of the original, the resistance of the golden wire of the match is a quarter of the normal. For the golden line supplier, the thinner the diameter of the golden line, the lower the cost, and the higher the profit when the price is unchanged.

For customers using the golden wire, the golden wire that reduces the ingredients of cornering materials on the purchase diameter will have the risk of rising gold wire resistance and a decrease in fuse current, which will greatly reduce the life of LED lamp beads. The golden line of 1.0mil must be shorter than the golden line of 1.2mil, but the simple test of the packaging factory cannot be tested. The precision instrument must be used to detect the diameter of the golden line.

3. LED lamp bead dedicated gold wires are brushed from the material with a golden purity of 99.99%or more. Through a reasonable design of alloy components, the gold silk has sufficient tensile and bonding strength, good ballistic, vibration and break rate Low advantage. Most of the alloy alloys should be a high -purity synergy wire with a purity of more than 99.99%, and the total amount of trace elements (AG/CU/Si/CA/Mg) remains below 0.01 to maintain the characteristics of gold.

Using mechanical performance detection, that is, the detection of loading and extension of the golden line load

The good golden thread that can withstand the impact generated during the resin packaging must have a prescribed stretch load and extension rate. At the same time, the broken force and extension of the golden line play a key role in the quality of the lead bond. The keyheed wire with a high break rate and the extension rate is more conducive to the keyhe.