C4740S
- Paste Type: Conductor
- Substrate: Alumina (Al2O3)
- Application Method: Screen Printing
- Application: Hybrid IC
Details
Description
C4740S is a general-purpose Ag/Pt conductor for use on alumina and BeO substrates. C4740S is suitable as a termination for all Heraeus air fireable resistor systems and also performs well as an inner layer conductor in mutilayer applications. C4740S can be printed at speeds up to 12 inches per second and is capable of resolving fine lines as narrow as 5 mils.
Key Features
Outstanding adhesion to alumina and beryllium oxide substrates
Excellent performance at high print speeds
Excellent solderability
Excellent performance at high print speeds
Excellent solderability
Metal
AgPt
Viscosity
90 – 140 kcps, Brookfield HBT, SC4-14 spindle & 6R utility cup @10 rpm, 25°C
Coverage
106 cm2
/g at 14 microns fired film thickness
/g at 14 microns fired film thickness
Coverage
106 cm2
/g at 14 microns fired film thickness
/g at 14 microns fired film thickness
Storage and Paste Preparation
Store in a dry location at 5 – 25°C. DO NOT REFRIGERATE. Allow paste to come to room temperature prior to opening. Spatulate well before using, as settling may occur during storage.
Warranty
Material guaranteed to meet specifications for 6 months from date of manufacturing with proper storage.
Printing Parameters
280 stainless steel mesh screen
0.5 mil emulsion.
0.5 mil emulsion.
Drying Temperature
Allow parts to level at room temperature for 5 minutes 150°C for 10 minutes
Process Temperature (TDS)
850 °C peak temperatureDwell time of 10 minutes
Film Thickness
11– 15 μm