VFCP Series (ꢀ8ꢀꢁ, 12ꢀ6, 1ꢁꢀ6, 2ꢀ1ꢀ, 2ꢁ12) (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Z-Foil Flip Chip Resistor with TCR
of ꢀ0ꢀꢁ ppꢂm/C, 3ꢁ % Space Saving vs0 Wraparound Design
and PCR of ꢁ ppꢂ at Rated Power
FEATURES
Temperature coefficient of resistance (TCR):
0.05 ppm/°C typical (0 °C to + 60 °C)
0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
Tolerance: to 0.01 % (100 ppm)
Power coefficient “R due to self heating”
5 ppm at rated power
Bottom View
Load life stability (70 °C for 2000 h): 0.005 % (50 ppm)
Power rating to: 600 mW at + 70 °C
Electrostatic discharge (ESD) up to 25 000 V
Resistance range: 10 to 125 k(for lower and higher
values, please contact us)
Foil resistors are not restricted to standard values; specific
“as required” values can be supplied at no extra cost or
delivery (e.g. 1K2345 vs. 1K)
Non-inductive, non-capacitive design
Short time overload 0.005 % (50 ppm)
Non hot spot design
Rise time: 1 ns effectively no ringing
Current noise: - 40 dB
INTRODUCTION
One of the most important parameters influencing stability is
the temperature coefficient of resistance (TCR). Although the
TCR of Bulk Metal® Foil resistors is considered extremely
low, this characteristic has been further refined over the
years.
The VFCP Series utilizes ultra precision Bulk Metal® Z-Foil.
The Z-Foil technology provides a significant reduction to the
resistive element’s sensitivity to ambient temperature
variations (TCR) and to self heating when power is applied
(power coefficient).
Voltage coefficient < 0.1 ppm/V
Non-inductive: < 0.08 µH
Terminal finishes available: lead (Pb)-free, tin/lead alloy
Compliant to RoHS directive 2002/95/EC
Matched sets are available per request
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishaypg.com
Along with the inherently low PCR and TCR, Z-Foil
technology also provides remarkably improved load life
stablility, low noise and availability of tight tolerance.
The flip chip configuration provides a substantial PCB space
saving of more than 35 % vs. a surface mount chip with
wraparound terminations. The VFCP is available in any
value within the specified resistance range.
For better performances please contact us
APPLICATIONS
Automatic test equipment (ATE)
High precision instrumentation
Laboratory, industrial and medical
Audio
Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us.
EB applications (electron beam scanning and recording
equipment, electron microscopes)
Military and space
Airborne
Down hole instrumentation
Communication
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
TYPICAL TCR AND
RESISTANCE
TOLERANCE
(%)
MAX0 SPREAD
(- ꢁꢁ /C to + 12ꢁ /C,
+ 2ꢁ /C Ref0)
VALUE
()
FIGURE 1 - POWER DERATING CURVE
+ 7ꢀ /C
- ꢁꢁ /C
1ꢀꢀ
7ꢁ
ꢁꢀ
2ꢁ
ꢀ
250to 125K
100to < 250
50to < 100
25to < 50
0.01
0.02
0.05
0.1
0.2 1.6
0.2 1.6
0.2 1.8
0.2 2.8
0.2 2.8
10to < 25
0.25
- 7ꢁ - ꢁꢀ - 2ꢁ
ꢀ
+ 2ꢁ + ꢁꢀ + 7ꢁ + 1ꢀꢀ + 12ꢁ + 1ꢁꢀ + 17ꢁ
Aꢂbient Teꢂperature (/C)
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63106
Revision: 25-Mar-10
For any questions, contact: foil@vishaypg.com
www.foilresistors.com
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