PV tabbing wire for solar cell soldering, solar cell connection use

Features

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.

About Coating Alloy

The coating type is determined by the customer's design and demand. It is divided into leaded

and dead-free coating. At moment the leaded coating type is widely used, but in the future it will

be developed to lead-free coating type. Main coating alloy types and melting temperatures as follows:

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

Storage Conditions and Shelf Life

Tinned copper ribbon should be stored in diry and ventilated room, where sholud be no acid,

alkali, or harmful gas and the indoor relative humidity should not exceed 60%. Place it horizotally while stacking and avoid the carton extrusion, meanwhile, the stacking quality of same product should not exceed five layers or 1 ton. The shelf life can be up to six mounths since the production date.