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WHD solder wire

Products are widely used in printed circuit board (PCB), assembly plug-in (THT), surface mount (SMT), etc., enjoying a good reputation in related fields, and has a number of stable high-quality customer groups, including many world-famous PCB and PCBA enterprises, covering it, automobile, electronics, power supply, electrical manufacturing and many other industries.

WHD solder wire

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Overview parameter

1,Description：

WHD lead-free Solder wire is a low residue cored solder designed for cleanless welding applications. The unique blend of rosin and proprietary activators provides rapid wetness while leaving a minimal, transparent, completely inert residue with minimal and transparent residues, conforming to JIS Z 3283-86.

Model No.	W305	W0307	W307	W4258
specifications	Sn96.5Ag3.0Cu0.5	Sn99.0Ag0.3Cu0.7	Sn99.3Cu0.7	Sn42Bi58
Level	A	A	A	A
Dia (mm)	0.2mm~3.0mm	0.2mm~3.0mm	0.2mm~3.0mm	0.2mm~3.0mm
Content of Sn（wt%）	Balance	Balance	Balance	42%
Content of Other mental c（wt%）	Ag：3.0±0.2 Cu：0.5±0.2	Ag：0.3±0.1 Cu：0.7±0.2	Cu：0.7±0.2	BI：58
Flux(wt%)	2.5±0.5	2.5±0.5	2.5±0.5	2.5±0.5
Dryness	Qualified	Qualified	Qualified	Qualified
Content0f Halogen	Qualified	Qualified	Qualified	Qualified
WATER SOLUTION RESISTANT (Ω cm)	50,000Above	50,000Above	50,000Above	50,000Above
INSULATION RESISTANT (Ω)	1×10¹¹　Above	1×10¹¹　Above	1×10¹¹　Above	1×10¹¹　Above
EXPANSION RATE %	＞75	＞75	＞75	＞75
Copper Plate Corrosion	Qualified	Qualified	Qualified	Qualified
Melting point (℃)	217	217～227	227℃		138℃

2,Production Information

3,Alloy composition

LEVEL

Mental Content(wt%)

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WHD solder wire

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