Flux-Coated Preforms

Accurate
Flux-coated preforms are manufactured with the exact amount of flux required for the specific application, providing a high degree of consistency from one bond to another.

For applications other than active device manufacture, flux can be incorporated as an integral part of the preform design to meet customer needs for the precise amounts of flux, easy automation, and elimination of costly separate flux applications.

Flux coatings are measured and applied by weight percentage.

Coatings can be applied to most shapes and sizes of preforms.

Flux Coatings for Preforms are available in no-clean and rosin-based chemistries with a variety of activity levels to suit your substrate metallizations.

In general, fluxes should be avoided in active device assembly due to the difficulty in removing the flux residue after soldering. If care is taken to ensure the joining surfaces and the preforms are thoroughly clean, and if a reducing atmosphere at 350°C is used, flux coating is usually not necessary.

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DETAILED INTRODUCTION

PRODUCT LIST

Features & Benefits

· Good oxidation resistance

· Exact amount of flux

· Simplify production process, save cost, increase output

PRODUCT LIST

Model
Flux-Coated Preforms

Halogen Content	Specific Gravity of flux	Sheet Composition	Shape
0.08±0.03	（0.5-3.5）%	SAC305, Sn63Pb37, In52Sn48, Bi58Sn42, Bi57Sn42Ag1, Sn96.5Ag3.5, Pb92.5Sn5Ag25, etc.	Ribbon,Silk,Sheet,Ring,Block

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