Low Temperature Co-fired
Ceramic System
A6M
High Frequency, High Reliability
LTCC Tape System
APPLICATION
TYPICAL FIRED PROPERTIES
Ferro’s industry leading A6M LTCC tape system
combines stable low dielectric constant and unique
low loss over a large frequency range, making it the
material of choice in a myriad of advanced
packaging applications up to 110 GHz.
Thermal Coefficient of Expansion:
A6M tape is available in standard thickness of 5 mil
(127 μm) and 10 mil (254 μm) in 8 inch (20 cm) or
14 inches (35cm) widths.
(Laminate to Fired)
Ferro A6M LTCC tape is also available in custom
widths and thicknesses as well as blanks to
accommodate
special
processing
and
RF
requirements.
The A6M system is Pb and Cd free and co-fireable
in air with specially matched Au or Au-Ag mixed
metal system.
7 ppm/°C
Tape Shrinkage:
X, Y (Laminate to fired)
15.4%
Z (Green to Fired)
28.0%
Fired Density:
14.3%
> 2.45 g/cm
Flexural Strength (3 pt. bend):
3
170 MPa
Young’s Modulus:
92 GPa
Shear Modulus:
32 GPa
Thermal Conductivity:
2 W/mK
Dielectric Constant (1-100GHz)*:
Dissipation Factor (1-100GHz)*:
5.9
< 0.2 %
> 10 /cm
12
Bulk Resistivity:
Breakdown Voltage:
> 5000 V/layer
Electrolytic Leakage Current:
< 1μA/c
Electrical Test Methods:
• Split-Post Resonator (1-10 GHz)
• Split-Cylinder Resonator (5–30 GHz)
• Fabry-Perot Resonator (30–100 GHz
This data represents typical properties and is not intended to be used as specification limits
Reasonable care has been taken in the preparation of this information; All statements, technical information and recommendations contained herein are based on Seller’s or
Manufacturer’s test and the test of others, and are believed to be accurate, but no guarantee of accuracy is made. Judgment as to the suitability of information herein or the user’s
purposes are necessarily the user’s responsibility. Users shall determine the suitability of the products for their own intended application. Statements concerning the possible use of
these products are not intended as recommendation to use these products in infringement of any third-party intellectual property or patent rights anywhere in the world.
Page 1 of 2
Ferro Electronic Material
www.ferro.com
Rev: 02/13
Low Temperature Co-fired
Ceramic System
A6M
High Frequency, High Reliability
LTCC Tape System
ALL GOLD BASED SYSTEM
TYPICAL PROCESSING GUIDELINES*
Inner Conductor: CN30-025JH, Co-Fire
Lamination: Iso-static 3000 psi (21MPa) @70°C for
10 minutes.
Via Fill: CN30-078, Co-Fire
Surface Conductors:
Wire Bondable: CN30-080, Co-Fire
Solderable: CN36-020, Co-Fire
Solderable: FX31-014/FX31-017, Post-Fire
Aluminum Wire Bondable: 3068, Post-Fire
Brazable High Temp:
Adhesion Layer: CN30-025JH, Co-Fire
Au/Ge Solder: 4007, Post-Fire
Brazable Low Temp:
Adhesion Layer: CN30-065, Post-Fire
Bi/Sn Solder: CN30-079, Post-Fire
Resistor: FX87 series, Co-Fire
Furnace Type: Box (preferred) or Belt Furnace with
controlled air-flow capability.
Burnout: Room Temp to 450°C @ ≤ 2°C/min, hold
at peak for 2 hours.
Firing: 450°C to 850°C @ 6-8°C/min, Hold at peak
temperature for 10 - 15 mins.
Airflow: 100 SCFM
Setters: Fused quartz for typical applications or
Zirconia Felt for Hi-metallization parts. Bare alumina
setters should not be used
MIXED METAL SYSTEM
Inner Conductor: CN33-398, Co-Fire
Via Fill: CN33-407, Co-Fire
Storage: Sealed bags, 20 – 25 °C @ 40 – 50% RH
in clean room environments.
Transition Via Fill: CN39-005, Co-fire
Shelf-life: 1 year under recommended storage
conditions.
Surface Conductors:
Wire Bondable: CN30-080, Co-Fire
Solderable: CN36-020, Co-Fire
Solderable: FX31-014/FX31-017, Post-Fire
Aluminum Wire Bondable: 3068, Post-Fire
* Refer to Ferro LTCC Design Guide for specific
processing parameters and specifications
Brazable High Temp:
Adhesion Layer: CN30-025JH, Co-Fire
Au/Sn Solder: 4007, Post-Fire
Brazable Low Temp:
Adhesion Layer: CN30-065, Post-Fire
Bi/Sn Solder: CN30-079, Post-Fire
Resistor: FX87 series, Co-Fire
This data represents typical properties and is not intended to be used as specification limits
Reasonable care has been taken in the preparation of this information; All statements, technical information and recommendations contained herein are based on Seller’s or
Manufacturer’s test and the test of others, and are believed to be accurate, but no guarantee of accuracy is made. Judgment as to the suitability of information herein or the user’s
purposes are necessarily the user’s responsibility. Users shall determine the suitability of the products for their own intended application. Statements concerning the possible use of
these products are not intended as recommendation to use these products in infringement of any third-party intellectual property or patent rights anywhere in the world.
Page 2 of 2
Ferro Electronic Material
www.ferro.com
Rev: 02/13