These general
parameters and specifications are intended to help manufacturing
engineers and designers to create a circuit layout by utilizing the
most effective metalization solutions while designing products with
REMTEC's PCTF® technology in mind.
PCTF ® Technology is based on plating copper on Thick
Films on a ceramic substrate, in single or multiple up image arrays.
Copper is plated to the required thickness and configuration. Basic
rules developed for design and manufacturing with air fireable thick
film hybrids are applicable with some additions and modifications as
described in REMTEC's Design Guidelines.
Design Specifications
Outline
|
Base
Material
|
Alumina,
Beryllia or Aluminum Nitride
|
|
Line
Resolution (Signal)
|
0.004"
Lines and Spaces*
|
|
Line
Resolution (Power)
|
0.008"
Lines and Spaces*
|
|
Conductor
Thickness
|
Available
from 0.001"- 0.010"
|
|
Conductor
Resistance
|
From
0.6 to 0.07 milliohms/square
|
|
Temperature
Range
|
-
55°C to +200°C
|
|
Solderability
|
Complete
wetting with Sn62 @ 230°C
|
|
Leach
Resistance
|
No
solder leaching or line reduction after 10, ten second dips in
Sn62 @ 230°C
|
|
Moisture
Resistance
|
No
failures after 1,000 hours @ 85°C, 85% RH and 50 VDC
|
|
Wire
Bondability
|
Excellent
for Au and Al
|
* Note: For better
line/spacing resolution, please contact the factory.
Designing with PCTF:
Application Notes
Plated Copper Line Resistance
|
Line
Thickness
|
Resistivity
|
|
.001"
|
0.65
mohms/sq
|
|
.002"
|
0.35
mohms/sq
|
|
.003"
|
0.26
mohms/sq
|
|
.005"
|
0.14
mohms/sq
|
|
.007"
|
0.10
mohms/sq
|
|
.010"
|
0.06
mohms/sq
|
Printed Thru Hole (PTH) &
Copper Plated Thru Hole (CPTH) Resistance
|
Ceramic
thickness
|
Through
Hole Diameter
|
PTH
Resistance mohms
|
CPTH
Resistance mohms
|
|
0.015"
|
.008"
|
2.5
|
0.40
|
|
.0.025"
|
.010"
|
4.0
|
0.52
|
|
0.040"
|
0.012"
|
8.0
|
0.70
|
PowerPlugs: Copper Plated Plugged Via holes in Ceramic
Resistance
|
Ceramic
thickness
|
Plugged
Via
Size
|
Resistance-mohms
(PCTF)
|
Resistance
(mohms)
Au
|
|
0.010"
|
.005"
|
0.5
|
1.5
|
|
0.015"
|
.008"
|
0.42
|
1.3
|
|
.0.020"
|
.010"
|
0.38
|
1.14
|
|
0.025"
|
0.010"
|
0.47
|
1.4
|
Thermal Conductivity
|
Via
Plug Material
|
Thermal
Conductivity, W/°CxM
|
|
PCTF
|
200
|
|
Au
|
65
|
Printed Resistors
Plated Cu and
Printed Resistors: Wide range 50 mohms to 10 Mohms, ratio matched,
power = 100 W, small geometry (.010” x .010”).
- Standard air fireable thick film resistors, from 50
mohms up to 1 Mohms per square.
- Minimum resistor size .010”x .010” with .003”
minimum overlap.
- Power rating: consult factory for rating and required
geometry.
- Tolerances: +/- 1% typical.
- Matching: +/- 0.5% typical.
- TCR: 50- 200 ppm/°C typical.
Detailed Design Guidelines and a graphical representation of
the design rules and recommendations may be obtained by filling the
Additional Information Request Form.
Please
See our Technology-Features
Page or contact our Sales for More info
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