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Indium Flux Coatings for Solder Preforms

Preforms are precise shapes of solder that are manufactured to tight tolerances to give repeatable, accurate solder amounts that are efficiently introduced into the manufacturing process.
Manufacturer: Indium
Description

Features

• Eliminates the need for a separate fluxing step
• Eliminates excessive flux residue
• Delivers flux precisely where it is needed
• Provides a uniform amount of flux ever y time

Introduction

Preforms are precise shapes of solder that are manufactured to tight tolerances to give repeatable, accurate solder amounts that are efficiently introduced into the manufacturing process.

Adding the flux directly onto the solder allows for an exact, correct amount of flux to properly complete the soldering process. It also puts the flux between the solder and the substrate where it is the most effective.

Flux coatings for preforms are available in no-clean and solvent cleanable chemistries, with a variety of activity levels to suit your substrate metallizations. Indium’s unique coating process can control the amount of flux to tight tolerances. Flux coatings are measured and applied by weight percentage. The standard weight percentage ranges from 1-3% +/-0.5%. The flux coating is applied after the dimensions of the preform have been verified.

Technical Support

Indium Corporation’s internationally experienced engineers provide in-depth technical assistance to our customers. Thoroughly knowledgeable in all facets of Material Science as it applies to the electronics and semiconductor sectors, Technical Suppor t Engineers provide exper t advice in solder proper ties, alloy compatibility and selection of solder preforms, wire, ribbon and paste. Indium Corporation’s Technical Suppor t engineers provide Rapid Response to all technical inquiries.

Additional Information

Please visit www.indium.com/techlibrary for more information
on solder preforms and flux coatings, or visit our blogs at www.indium.com/blogs

FLUX COATING

IPC CLASSIFICATION

SUBSTRATE FINISHES

RELIABILITY J-STD-004

NC-10HF

ROL0

Au, Ag, Pd, Pt, Cu, Ni, HASL, ENIG, Sn

Pass

NC-7

ROL0

Au, Ag, Pd, Pt, Cu, HASL, ENIG, Sn

Pass

NC-9

ROL1

Au, Ag, Pd, Pt, Cu, HASL, ENIG, Sn

Pass

R

ROL0

Au, Ag, Pd, Pt, Cu, HASL, ENIG, Sn

Pass

RMA

ROL0

Au, Ag, Pd, Pt, Cu, HASL, ENIG, Sn

Pass

RA

ROL1

Cu, Ni, Cu Alloys (Brass, Bronze)

Cleaning recommended

RSA

ROL1

Cu, Ni, Cu Alloys (Brass, Bronze)

Cleaning recommended

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Conro Electronics Ltd
Unit 7, Orbital 25, Dwight Road, Watford, Hertfordshire
WD18 9DA

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