2331-ZX FLUX-PEN

Organic Water-Soluble Flux-Pen

for Lead-bearing and Lead-free Alloys

Product Description

Kester 2331-ZX Flux Pen

is designed for leaded and lead-free rework of conventional and surface mount circuit board

assemblies. 2331-ZX Flux Pen

is an innovation in organic acid water-soluble ux chemistry for soldering circuit board

assemblies. This unique, neutral pH chemistry ux provides the best ionic cleanliness of any organic watersoluble ux

available to the electronics industry. This popular ux has been used for soldering critical assemblies in the telecommu-

nications, computer and other industries. No offensive odors will be emitted during soldering. 2331-ZX Flux Pen

will

not create excessive foaming in standard water cleaning systems. 2331-ZX Flux Pen

has good soldering properties for

improved productivity ithout sacricing reliability of the assembly. This ux does not attack properly cured solder masks

or FR-4 epoxy-glass laminate. 2331-ZX Flux Pen

is not detrimental to the surface insulation resistance of the soldered

assembly. Use of this ux minimizes cleaning costs while complying with environmental regulations.

Reliability Properties

Copper Mirror Corrosion: High

Tested to J-STD-004, IPC-TM-650, Method

2.3.32

Corrosion Test: High

Tested to J-STD-004, IPC-TM-650, Method

2.6.15

Silver Chromate: Fail

Tested to J-STD-004, IPC-TM-650, Method

2.3.33

Chloride and Bromides: 2.2%

Tested to J-STD-004, IPC-TM-650, Method

2.3.35

Fluorides by Spot Test: Pass

Tested to J-STD-004, IPC-TM-650, Method

2.3.35.1

SIR, IPC (typical): Pass

Tested to J-STD-004, IPC-TM-650, Method

2.6.3.3

Blank 2331-ZX

Day 1 1.2 ×10

Ω 3.4 × 10

Day 4 8.7 ×10

Ω 1.4 × 10

Day 7 8.6 ×10

Ω 1.8 × 10

Physical Properties

Specic Gravity: 0.899 ± 0.005

Anton Paar DMA @ 25°C

RoHS Compliance

This product meets the requirements of the Restriction of Hazardous Substances (RoHS) Directive, 2011/65/EU for the

stated banned substances.

Percent Solids (theoretical): 33%

Tested to J-STD-004, IPC-TM-650, Method

2.3.34

Performance Characteristics:

■ High activity

■ Chemically compatible with most

solder masks and board laminates

■ pH Neutral Chemistry ■ Classied as ORH1 per J-STD-004

Global Headquarters: 800 West Thorndale Avenue, Itasca, IL USA 60143 ■ Phone: +1 800.2.KESTER ■ Fax: +1 630.616.4044

Asia-Paciﬁc Headquarters: 61 Ubi Avenue 1 #06-01 UB Point, Singapore 408941 ■ Phone: +65 6.449.1133 ■ Fax: +65 6.242.9036

European Headquarters: Ganghofer Strasse 45, 82216 Gernlinden, Germany ■ Phone: +49 (0) 8142 4785 0 ■ Fax: +49 (0) 8142 4785 61

Asia Manufacturing: Hengqiao Road, Wujiang Economic Development Zone ■ Suzhou, Jiangsu Province, China 215200 ■ Phone: +86 512.82060807 ■ Fax: +86 512.8206 0808

■ Website: www.kester.com ■

Technical Data SheetTechnical Data Sheet

Health and Safety

This product, during handling or use, may be hazardous to your health or the environment. Read the Safety Data Sheet

and warning label before using this product.

Storage, Handling and Shelf Life

2331-ZX Flux-Pen

is ammable. Store away from sources of ignition. Shelf life is 2 years from the date of manufacture

when handled properly and held at 10-25°C (50-77°F). The cap must be in place when not being used.

Cleaning

Flux residues after soldering must be removed as they are conductive and corrosive. No neutralizer, saponiers or

detergents are necessary in the water wash system for complete removal of ux residues. It is not recommended to use

high mineral content tap water. Otherwise, tap, deionized or softened water may be used for cleaning. The optimum water

temperature is 54-66°C (130-150°F), although lower temperatures may be sufcient.

Process Considerations

2331-ZX Flux-Pen

should only be applied to areas that will be fully heated by the soldering iron or other reow tool. Care

should be taken to avoid ooding the assembly. The surface tension has been adjusted to help the ux form a thin lm on

the board surface allowing rapid solvent evaporation.

Application Notes

Global Headquarters: 800 West Thorndale Avenue, Itasca, IL USA 60143 ■ Phone: +1 800.2.KESTER ■ Fax: +1 630.616.4044

Asia-Paciﬁc Headquarters: 61 Ubi Avenue 1 #06-01 UB Point, Singapore 408941 ■ Phone: +65 6.449.1133 ■ Fax: +65 6.242.9036

European Headquarters: Ganghofer Strasse 45, 82216 Gernlinden, Germany ■ Phone: +49 (0) 8142 4785 0 ■ Fax: +49 (0) 8142 4785 61

Asia Manufacturing: Hengqiao Road, Wujiang Economic Development Zone ■ Suzhou, Jiangsu Province, China 215200 ■ Phone: +86 512.82060807 ■ Fax: +86 512.8206 0808

■ Website: www.kester.com ■

Flux Application

2331-ZX Flux-Pen

is applied to circuit boards via Flux-Pen

for rework of printed wire assemblies.