Knowledge Article for IP9217
IP9217 is a blue 850° C firing dielectric composition which produces an extremely dense, hermetic fired film. IP9217 is compatible with a wide variety of Au and Ag conductors and resistor systems. Its unique glass system eliminates blistering in multilayer applications.
Via Resolution: 200 μm (8 mil)
Dielectric Constant:8.5 – 11.5 at 1 KHz
Dissipation Factor: < 0.5 % at 1 KHz
Insulation Resistance: > 1011 Ω at 100 V DC
Breakdown Voltage: > 500 V DC per mi
Coverage: 100 cm2/g at 50 μm wet film thickness
Viscosity. 230 – 330 Kcps, Brookfield HBT, SC4-14 spindle with 6R utility cup at 10 rpm, 25 °C
Solids. 75.0 ± 1.0 %
Frequently Asked Questions and Answers
What are the recommended processing guidelines for IP9217?
Printing
280 mesh stainless steel screen
0.5 mil emulsion thickness
For via geometries < 15 mils, use a 325 mesh screen.
Three individually fired layers with a total thickness of at least 40 μm will be necessary to achieve the optimum performance level.
Allow wet prints to level at room temperature for 5 minutes.
Drying
150 ºC for 10 minutes
Firing
850 ºC peak temperature
Dwell time of 10 minutes
Thickness
Dried: 21 μm
Fired: 15 μm
> 40 μm (3 fired layers)
Thinner
RV-507
Warranty
Material guaranteed to meet specifications for 6 months from date of shipment.
Storage
Store in a dry location at 5 – 10 °C to ensure proper performance of shelf life.
Allow paste to come to room temperature prior to opening. Spatulate well before using.
What should IP9217 look like when properly fired?
IP9217 fires to a dark blue and should yield a dense smooth dielectric layer when properly fired.
What does the density of IP9217 look like under SEM?
This is how the density of IP9217 looks like under the scanning electron microscope.
What is the recommended firing profile for IP9217?
The recommended firing profile for IP9217 follows the 850°C firing profile air fireable conductors, resistors and dielectrics.
What conductors are recommended for IP9217?
C8728 Pb/Cd Free Silver Conductor Paste
C8727 is a lead, nickel and cadmium free fritless Ag conductor that yields a smooth, dense film. It exhibits high adhesion to alumina and IP9217 multilayer dielectric. C8727 can be multiple fired without any loss of performance.
This low cost silver material offers:
- inner layer for multilayer applications
- excellent conductivity
- outstanding adhesion to alumina and IP9217 multilayer dielectric
- good printability for fine lines and large area ground planes
- excellent properties at high print speeds
C5729 Pb/Cd Free Gold Conductor Paste
This is a lead and cadmium free gold conductor paste that has been formulated for easy bonding and fine line, multilayer applications, where high conductivity and high density are critical.
It offers:
- excellent Al and Au bondability
- high conductivity
- fine line printing resolution, 150 micron (6 mil) lines and spaces
C2160B or C2180 Pb/Cd Free Silver/Palladium Conductor Paste
This Pd/Ag conductor paste is used as a buffer layer to retard Ag migration between the dissimilar metallurgies.
These materials provide:
- outstanding via fill to dielectric adhesion
- excellent surface coplanarity
- good conductivity
- easy to process
- slows Ag migration
What resistors are recommended for IP9217?
R8900DG or R8900DB Series Air-Fired Resistor System
The Heraeus resistor system is designed for use on top of IP9217 dielectric as well as alumina, over a range of 1Ω/sq—1MΩ/sq.
- complete process and profile insensitivity
- excellent noise and STOL values
- outstanding post trim laser stability after long term storage
- TCRs of ±100ppm for 10Ω/sq—1MΩ/sq resistors
How fine of features can I screen print with IP9217?
Using a 325 mesh screen, a seasoned operator can print down to 125-150 microns using IP9217.
What is the CTE of IP9217?
The CTE of IP9217 is as follows: CTEHeating [50-600°C] = 8.5 – 9.5ppm/K
What are typical breakdown voltages and Insulation resistance for 2 and 3 layer constructions of IP9217 for standard conductors?
Breakdown Voltage (DC)
Insulation Resistance (Gohm)
What is the typical allowable operating temperature of IP9217?
The maximum operation temperature of IP9217 is 350°C
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