1. Copper welding wire 2. High quality 3. Good price 4. Advanced tech manufacture 5. Certification: ISO,ROHS,MSDS,Reach

   

Copper bonding wire is a kind of material for inner lead with excellent electrical, thermal, mechanical properties and excellent chemical stability, mainly for key materials of semiconductor packaging( molding compound, solder ball, high-desity packaging substrate, conducting resin).

Features of products:

 1. material costs: low

 2. electronical conductivity: 5.88 10E7/Ohm

 3. thermal conductivity: 39.5KW/m2k 

 4. mechanical properties: good

 5. stability: stable

 6. solder joint: relatively better

Diameter(mm)

0.018

0.020

0.023

0.025

0.028

0.030

0.032

0.033

0.038

0.050

special order avaliable

Copper Wire Physical Properties:

Resistivity	1.690*10-6 Ω.cm
Density	8.9g/cm3
Purity	5N
Pull(Φ25μm)	>7cN
Arc height	8mil
Fusing current	Same as usual copper bonding wire

Copper Bonding Wire Advantage:

1. Material costs: Low

2. Conductivity: 5.88 10 E7/Ohm Much thinner bonding wires during fine pitch packaging,  

                         excellent performance of fine pitch(much smaller bonding pad), improving  

                         current capacity and property of power regulating device.

3. Thermal conductivity: 39.5 KW/m2K

4. Mechanical properties: High mechanical property, larger tensile strength, better elongation,  

                                         excellent ball collar strength and higher arc stability.

5. Stability: Stable-slow inter-metallic growth rate, improving mechanical stability  

                   and decreasing incremental resistance: moderate IMC growth enables  

                   bonding strength to be improved.

6. Solder joint: Significantly reduced inter-metallic growth rate of solder joints. Resistance  

                        reduced, heat production decreased, bonding reliability and device performance  

                        improved. As the new products have their inter-metallic growth rate, resistance  

                        and heat production lower than gold wire, the amount of resistance increase with  

                        time and aging rete also is reduced.  

Double flange spool:

Spool  type	Material	Flange  diameter	Core  diameter	Wall  thickness	Internal  diameter	Overall  width	Width over windings
AL-2	Aluminum	mm	mm	mm	mm	mm	mm
		Φ58.5±1.0	Φ50.3±0.01	Φ0.75±0.1	Φ48.8±0.2	Φ28±0.5	Φ26.5±0.5
AL-4		Φ58.5±1.0	Φ50.3±0.01	Φ0.75±0.1	Φ48.8±0.2	Φ47.3±0.5	Φ45.5±0.5