- Paste Type: Disc Termination
- Application Method: Screen Printing
- Substrate: PZT, NTC Ceramics, Alumina (Al2O3), Steatite, Porcelain
- Metal: Ag
- Application: Piezo, Component Metallization
- Description: 3255 is a silver conductor paste designed to screen print solderable electrodes onto a variety of electrical ceramic component devices. The fired film forms a highly adherent bond to many types of substrates, including piezoelectric transducers (PZTs), NTC thermistors, alumina, steatite and porcelain. The metalized electrode is solderable for external lead attachments.
- Key features: Excellent adhesion
Excellent solderability
Compatible on piezoelectric transducers (PZTs), NTC thermistors, alumina, steatite and porcelain
- Printing Parameters: 150 – 250 stainless steel mesh screen
0.3 – 1.0 mil emulsion
- Process Temperature: 725 – 850 ºC peak temperature
Dwell time 8 – 12 minutes at peak
Cycle time of 45 – 60 minutes
Larger parts may require a longer firing profile
- Film Thickness : 8 – 14 μm
- Viscosity: 110 – 130 kcps Brookfield RVT spindle #7,
at 20 rpm, 25 °C
- Conductivity: ≤ 3.0 milliohms/square
at 25 um fired film thickness
- Alloy Ratio: 100
- Resistivity (Ohm/sq.): ≤ 3.0 mΩ/
at 25 μm fired film thickness