02/04/05
S0705AF High Frequency Thin Film Chip Resistor
Standard Grade, Surface Mount, Top Surface Terminations
PRODUCT FEATURES
• Frequency Range to 20GHz
with excellent VSWR
characteristics
• Produced with the same
stringent quality and reliability
standards as our QPL S level
Mil-PRF-55342 and space level
products
• High stability thin film resistor
element, 99.5% alumina
substrate
•
Tight tolerance and low TCR
availability
MECHANICAL
Length
Width
Thickness
Top Term
Gap
Approx. Weight
INCHES
MILIMETERS
FREQUENCY PERFORMANCE
State of the Art thin film high frequency chip resistors are produced with a
tantalum-nitride based resistor element that is extremely stable with time,
temperature, and frequency. The chips perform well over a wide frequency
range, exhibiting low VSWR response from DC to 20 Ghz and higher.
Solderable terminations allow the chips to be reflowed or hand soldered into
microwave circuits easily while maintaining excellent return loss
characteristics. Parasitic reactance is very low for these chips with
capacitance being typically less than 0.1 pF.
The frequency response data plotted below shows an example of VSWR
obtained for 50 ohm resistors tested (resistor element down) in pressure
contact fixtures. Data for chips which are solder attached to matched circuit
traces may exhibit even better performance.
.077 (.075 -.083)
.048 (.046 -.050)
.025 (.023 -.033)
.017 (.012 -.022)
.041 (.037 -.045)
.004 grams
1.96
1.22
0.64
0.44
1.04
(1.91 - 2.11)
(1.17 - 1.27)
(0.59 - 0.84)
(0.31 - 0.56)
(0.94 - 1.14)
CHARACTERISTICS
Resistance (others available)
Tolerance (others available)
Maximum Power
Frequency Range
TCR (-55° / + 125°C)
50, 75,100, 200 ohms
0.1,1, 2, 5 %
200 milliwatts
DC to 20 GHz
25, 50, 100 ppm/ °C
2.0
1.9
1.8
1.7
VSWR
1.1
1.2
1.3
1.4
1.5
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
Return
Loss
26.4 dB
20.8 dB
17.7 dB
15.6 dB
14.0 dB
VSWR
1.6
1.5
1.4
1.3
1.2
1.1
1.0
ENVIRONMENTAL PERFORMANCE*
Thermal Shock
Low Temperature Operation
Short Time Overload
Resistance to Bonding Exposure
Moisture Resistance
High Temperature Exposure
±0.03 %
±0.03 %
±0.03 %
±0.03 %
±0.05 %
±0.05 %
Frequency ( GHz )
* Typical percent resistance change -test methods and
actual specification limits are in accordance with Mil-PRF-55342.
TYPICAL LIFE PERFORMANCE
Absolute Percent
Resistance Change
Parts are solder mounted on Fr4
board and tested at 70°C. Power
is applied for 90 minutes on and
30 minutes off at a rate that
achieves a film temperature 30°C
above ambient.
0.5
0.4
0.3
0.2
0.1
0.0
0
250 500 1K 2K 4K 6K 8K 10K
Thin film 0705 high frequency chip resistors are also available in other
terminations styles and material finishes for attachment to circuit boards by
soldering, bonding, or epoxy mounting. High power chip designs on BeO
can be provided for increased heat dissipation. Custom chip designs are
available to provide optimum solutions for specific high frequency
applications.
ADS and Characterization files are available upon request.
Test Duration in Hours
Consult our engineering department for specific performance needs.
PART NUMBERING
S0705AF 50R0 F H B
RESISTANCE VALUE
Three digits (>1% tolerance) or four
digits (1% and lower) are used with all
leading digits significant. The last digit
specifies the number of zeros to add.
The letter “R” is used to represent the
decimal for fractional ohmic values.
B: Solderable W: Wire Bondable
K: SN 62 bump M:80/20 Au/Sn bump
TEMPERATURE COEFFICIENT
E: 25
ppm
H
:
50
ppm
K: 100
ppm
TOLERANCES
B
: 0.1
% F
: 1%
G
: 2%
J
: 5%
PACKAGING
Two packaging options are available:
Waffle Pack - 170 per tray maximum
Tape & Reel - 5000 per 7 inch reel maximum
OPTIONS
• Optional high reliability screening or custom testing
or other special requirements can also be furnished.
Consult our factory with your special needs.
• Also available on fused silica, product code: T
STATE OF THE ART, INC.
2470 Fox Hill Road State College, PA 16803-1797 Phone (814)355-8004 Fax (814)355-2714
TOLL FREE 1-800-458-3401
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