PV Ribbon Busbar Wire for Solar Cells Soldering/ Solar Cell Connection

Electrolytic flat copper wire of high purity 99.95%, smooth, brilliant, cleaning. Out of scales and strokes, plated by dipping with tin and lead, or other lead-free chemicals compositions:

Mechanical Property:

Elongation: E-Soft>=20% U-Soft>=15%

Tensile strength:>=170MPa

Side camber: L<=7mm/1000mm

Soldering tin melting point: 180~230°C

Electric Resistivity of Copper:

TU1<=0.0618Ω·m m2/m; T2<=0.01724 Ω·m m2/m

Core Copper of TU1 Off-Cu or ETP1:

Copper Purity >=99.97%, Oxygen<=10ppm

Resistivity: ρ20<=0.017241Ω·m m2/m

Electric Resistivity of Ribbon:

(2.1~2.5)X10-2Ω·mm2/m

The scope of Product specification:

1) Thickness Min: 0.04mm Max: 0.60mm

2) Width Min: 0.80mm Max: 20.00mm

Plated Thickness:

1) Hand-Soldering: 0.02-0.03mm per side

2) Machine-Soldering: 0.01-0.02mm per side

Composition of Plated Material:

1) Lead series products:

A.Sn 60%, Pb 40%

B.Sn 63%, Pb 37%

C.Sn 62%, Pb 36%, Ag 2%

D.Sn 60%, Pb 39.5%, Ag 0.5%

2) Lead-free series products:

A.Sn 96.5%, Ag 3.5%(Bi)

B.Sn 97%, Ag 3% and so on

About PV Ribbon

PV ribbon is composed of Copper and coating alloys, and divided into Tabbing Ribbon and Bus bar ribbon.

1,Tabbing Ribbon

Tabbing Ribbon commonly connects the positive and negative sides of the cells in series.

2,Bus bar Ribbon

Bus bar Ribbon concentrates the cell stringing into junction box and channels electrical current.

The Core Technology

1,Forming of round wires to flat wires through drawing and rolling

2,Heat tretment

3,Hot-dip tinning

4,Precise spooling

Quality Assurance

1,Technology and Equipment

1) Advanced technology and equipment from German

2) Advanced measuring technology

3) Stability and reliability of products

2,Management: ISO9001:2000

3,Certificate: SGS, TUV

Specifications