MASTER BOND CONFORMAL COATING APPLICATION SELECTOR GUIDE

Selected Products Specially Formulated for High Performance Protection of Electronic Assemblies and Devices

Partial Listing Only –— Other Grades Available


Conformal coatings are essential materials for enhancing the long term reliability and  performance of electronic assemblies, particularly when exposed to harsh conditions such as high humidity, corrosive chemicals and extreme temperatures.  Master Bond Inc. offers a complete line of conformal coatings that are easy to apply and provide superior protection for printed circuitry.  These conformal coatings include very fast, one part,  UV curing formulations, one and two part epoxies, one and two part silicones and a unique, cost effective latex system.  These coatings can be applied by spraying, dipping,  flow coating and other conventional processing techniques.  Master Bond Inc. will be glad to recommend specific products for your particular application.


Two Component Epoxies —


Master Bond Grade


Color Code

Mix Ratio
by weight

Viscosity
RT, cps

Set-Up Time
Minutes, RT

Cure Schedule
Temp/Time, °F

Service Temp Range, °F


Applications

EP21LV-1

“A” clear
“B” amber

100/100

4,000-6,000

60-90

24-48 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Excellent physical properties & chemical resistance profile.  Offers convenient mix ratio and working life.   Easy to apply by brushing or dip coating.

EP21LSCL

“A” clear
“B” clear

100/60

1,000-1,500

30-35

24 hrs @ RT
1 hr @ 250°F

-65 to +250°F

Transparent, non-yellowing coating.  Good electrical insulation properties.  For optical, opto-electronic and display applications.  Sprayable.

EP30-4

“A” clear
“B” clear

100/50

2,000

4-10

8-12 hrs @ RT

-60 to +250°F

Transparent.  Very fast curing.  Low viscosity.  Excellent electrical insulation and non-yellowing properties.  Applied by spraying or flow coating.

EP30AO

“A” off white
“B” clear

100/10

15,000-20,000

30-40

24-36 hrs @ RT
1-2 hr @ 200°F

-60 to +250°F

Low viscosity, thermally conductive coating. Excellent electrical insulation properties.  Superior dimensional stability.  Applied by brushing or dip coating.

EP30DP

“A” light amber
“B” clear

100/10

3,000-4,000

60-90

48 hrs @ RT
2-3 hrs @ 200°F

4°K to +250°F

Toughened system.  Offers repairability.  Superb electrical insulation properties.  Applied by brushing, dipping or spraying.

EP30FL

“A” amber
“B” clear

100/25

2,000-3,000

25-30

24 hrs @ RT
1-2 hrs @ 200°F

4°K to +250°F

Low viscosity.  Flexible.  For high performance coating.  Applied by spraying or dipping.  Superior thermal and mechanical shock resistance.  Cryogenically serviceable.

EP30HT

“A” clear
“B” clear

100/25

35,000-45,000

25-35

24 hrs @ RT
1-2 hrs @ 200°F

-60 to +400°F

High temperature resistant coating.  Outstanding chemical resistance. Excellent optical transmission properties.  Easily applied by brushing or dipping.

EP30LV

“A” clear
“B” clear

100/20

200-300

35-40

24-36 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Low viscosity, clear.  Excellent electrical insulation properties &  chemical resistance.  Applied by spraying or flow coating.

EP37-3FLF


“A” clear
“B” clear

100/100

1,500-1,800

120-150

48-72 hrs @ RT
3 hrs @ 200°F

4°K to +250°F

Highly flexible system.  Outstanding resistance to thermal cycling.  Offers repairability.  Excellent optical properties.  Applied by dipping or spraying.

EP41S-4


“A” black
“B” clear

100/25

3,000-4,000

15-20

24 hrs @ RT
1-2 hrs @ 200°F

-60 to +300°F

Special high security coating with outstanding resistance to organic solvents and acids.  Easily applied by brushing, flow coating or dipping.

EP62-1


“A” clear
“B” tan

100/5 or
100/10

8,000-10,000

8-10 hrs

4-6 hrs @ 150°F or
2-3 hrs @ 200°F

-60 to +300°F

High temperature, high chemical resistance.  Long working life at room temperature.  Applied by brushing or dip coating.  Requires heat cure at 150-200°F.


One Component Epoxies —


Master Bond Grade


Color Code

Storage Stability, RT

Viscosity
RT, cps

Cure Schedule
Temp/Time, °F

Service Temp Range, °F


Applications

EP3FL

yellow to
amber

3 months@75°F
6 months@40°F

60,000-70,000

5-10 min @ 300°F
20-30 min @ 250°F

4°K to +250°F

Toughened coating.  Good electrical properties.  Outstanding thermal cycling and thermal shock resistance.  Cryogenically serviceable.  Easily applied by dip coating or brushing.

EP19HT

amber
clear

4 months

600

60 min @ 250°F
45 min @ 300°F

-60 to +400°F

Low viscosity.  Good mechanical & electrical insulation properties.  Superior chemical resistance.  Applied by spraying or flow coating.

EP101HTX-3

clear with fluorescent
dye

6 weeks

1,000-1,500

2-6 hrs @ 250°F followed by
6-10 hrs @ 300°F

-60 to +500°F

Unsurpassed dielectric properties.  Very low dissipation factor.  Excellent temperature resistance. Superb optical clarity. Used in high voltage applications.  Easily applied by spraying or flow coating.

UV Curable Systems —


Master Bond Grade


Color Code

Viscosity
RT, cps

Set-Up Time
Minutes, RT

Cure Schedule
Temp/Time, °F

Service Temp Range, °F


Applications

UV10LV

light amber
clear

200

not applicable              5-30 secs

depends on depth of cure & light intensity

-60 to +250°F

Ultra-low viscosity coating.  Wickable.  Outstanding electrical properties.  Ideal for specialized conformal coatings.  Sprayable.

UV15

slight amber
clear

120-150

not applicable              5-30 secs

depends on depth of cure & light intensity

-60 to +350°F

Excellent heat & chemical resistance. Post curing by heat enhances properties.  Optional fluorescent dye available.  Sprayable.

UV15-7

transparent

1,400-1,800

not applicable              5-30 secs

depends on depth of cure & light intensity

-60 to +300°F

Superb non-yellowing properties.  Outstanding physical strength and electrical insulation profile.  Applied by spraying or flow coating.

UV15-7SP4

transparent

800-1,500

not applicable              5-30 secs

depends on depth of cure & light intensity

-80 to +250°F

Highly flexible.  Excellent non-yellowing properties.  Great thermal shock & impact resistance.  Superb thermal cycling capabilities.

UV15X-5LV

transparent

80,000

not applicable              5-30 secs

depends on depth of cure & light intensity

-80 to +250°F

High flexibility.  Outstanding abrasion resistance.  Superb mechanical & thermal shock resistance.  Best applied by brushing or dip coating.

Specialty Systems —


Master Bond Grade


Type of System

Mix Ratio
by weight

Viscosity
RT, cps

Set-Up Time
Minutes, RT

Cure Schedule
Temp/Time, °F

Service Temp Range, °F


Applications

MasterSil 713

1 part silicone

1 part

3,000

        15-20                18-24 hrs @ RT

depends on depth of cure & humidity

-75 to +400°F

Highly flexible, easily repairable system.  Non corrosive &  fast curing.  Applied by brushing, dip coating or spraying.

MasterSil 773

1 part silicone

1 part

60-70

            5                       2-4 hrs @ RT

depends on humidity

-75 to +400°F

Ultra low viscosity.  Superb humidity & heat resistance. Applied by spraying, dipping, brushing or flow coating.

MasterSil 151

2 part silicone

100/10

1,200-1,500
(mixed)

4-5 hrs

24-48 hrs @ RT
2-3 hrs @ 200°F

-75 to +400

Addition type curing system.  Optically clear.  Low outgassing.  Cures at ambient or elevated temperatures.

EP56

water based urethane

1 part

300-400

50-60

12-24 hrs @ RT

-75 to +250°F

Easily processable, low cost system.  Excellent electrical properties.  Best applied by brushing or dip coating.

Master Bond Inc.

Adhesives, Sealants & Coatings • 154 Hobart Street • Hackensack, N.J.  07601 • Tel: 201-343-8983 • Fax: 201-343-2132

Notice:  Master Bond believes the information on the data sheets are reliable and accurate as is technical advice provided by the company.  Master Bond makes no warranties (expressed or implied) regarding the accuracy of the information, and assumes no liability regarding the handling and usage of this product.                                                                                                                                                     D079