EMS MATERIALS SCIENCE & METROLOGY CATALOG 2019–20 EDITION SEM SUPPLIES
Colloidal Compounds & Conductive Adhesives (continued) EMS Conductive GOLD Paste
Certified Colloidal Compounds
Graphite Conductive Adhesive 154
Adhesive 154 is an easy-to-apply resistance coating designed to provide high lubricity, conductivity, and excellent release properties to many non- conductive substrates, including most plastics. It is made from a dispersion of colloidal graphite in an isopropanol base which quickly air-dries, forms an uniform thin film adherent layer. Air dries to touch in 5 minutes and is ready
for use in 30 minutes. After air drying, bake for 5 minutes at 167°F (75°C) to achieve optimum coating qualities in a shorter curing cycle.
Typical Properties (as supplied): Pigment Color
EMS Conductive Epoxy Gold-Paste
This EMS one part Epoxy Gold Paste is a gold-filled conductive bonding, exhibiting high electrical conductivity and bond strength. This Gold Paste is used in preference to silver-epoxy or other silver preparations to avoid silver migration problems, or when a higher signal is required.
This Gold Paste is well suited to all SEM work, and it bonds well to alumina ceramic substrate, phenolic circuit boards, and transistor headers. It is also useful in a variety of applications in solid state and hybrid circuits including attachment, bonding semiconductor devices, heat sinks, capacitor chips.
Properties : Composition: System:
Viscosity:
Pot Life (25°C): Cure:
Elec. Resist (Ohm-cm): Bond Shear Strength: Outgassing (postcure): Thinner:
Serv. Temp. Range: 12640
12685-25 RT 88% Gold
One-part epoxy 175,000 cps 6 months
15 hrs. @150°C, or 1 hr. @ 150°C plus 2 hrs. @200°C 4 x 104
1000 psi 0.70% 1000 hrs @125°C
Butyl carbitol acetate or butyl cellosolve acetate -65°C to +200°C
Gold Epoxy Paste EMS Conductive Gold-Paste
This EMS Conductive Gold-Paste is a one part adhesive. Fast drying – dries at room temperature. Maximum service temperature is 65°C. This adhesive is not for permanent use, useful for testing and temporary work where a high signal is required from the adhesive.
Gold content is ~75%, including sphere sizes < 2 µm, and flake size <10 µm, in organic binders and a solvent. Keep refrigerated for good shelf life.
Sheet resistance is 0.02 to 0.05 ohm-cm @ 1 mil thickness. 12642
12643
EMS Conductive Gold-Paste 2 gm Conductive Gold-Paste Extender 25ml
RT 2 g Gold Thinner( Butyl Carbitol Acetate) 25 ml
Binder Carrier Dilutent
Consistency Weight solids Volume solids Flash point Shelf life
Typical Properties (as cured): Color
Service temp. Sheet resistance 12691-30
Graphite Black
Cellulosic resin Isopropanol
Isopropanol or equivalent Liquid 20% 14%
52°F (11°C) 6 months under original seal
Matte black 150°F (65°C)
1.2 K ohms/sq inch @ 1 mil dry film Graphite Conductive Adhesive 154 30g
Graphite Conductive Adhesive 112 Adhesive 112 is an air drying graphite coating of unusually high conductivity. It provides excellent static bleed properties and acts as a protective energy absorbing layer. It also offers good shielding performance (30-50 db over 50-450 MHz) at a coating thickness of 2 mils. It is water based and useful in solvent prohibited applications.
To use: Air dry until all water has flashed off. Air dries to touch in 20 minutes, to handle in 25 minutes. It will continue to harden for 24 hours. It can be forced dried at temperatures up to 160°F (71°C).
Typical Properties (as supplied): Pigment Binder
Dilutent Color
Solid content Shelf life
Typical Properties (as cured): Color
Service temp. Sheet resistance:
Graphite Acrylic None Black 34%
6 months under original seal Black 350°F (190.8°C) 12693-30 Graphite Conductive Adhesive 112
20 ohms/square inch @ 1 mil dry film 30g
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