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 “ΔR 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 Ω to 125 kΩ (for lower and higher
values, please contact us)
• Vishay 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@vishay.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
(Ω)
FIGURE 1 - POWER DERATING CURVE
+ 7ꢀ /C
- ꢁꢁ /C
1ꢀꢀ
7ꢁ
ꢁꢀ
2ꢁ
ꢀ
250 to 125K
100 to < 250
50 to < 100
25 to < 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
10 to < 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: 07-Jul-09
For any questions, contact: foil@vishay.com
www.vishay.com
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