VFC1206
Vishay Foil Resistors
High Precision Flip Chip,
Patents Pending (Industrialized Countries)
FEATURES
• Nominal TCR: 0.5ppm/°C (- 55°C to + 125°C)
• Resistance Range: 10Ω to 30K
• Tolerance: to ± 0.01%
• Load Life Stability: ± 0.01% maximum ∆R under full rated
power at + 70°C for 2000 hours
• Shelf Life Stability: 50ppm (0.005%) over several years
• Voltage Coefficient: < 0.00001%/volt (< 0.1ppm/V)
• Current Noise: < 0.010µV (rms)/volt of applied voltage
• Non Inductive: < 0.08µH
• Terminal Finishes Available:
Product may not
be to scale
Lead (Pb)-free (Sn 99.3% Cu 0.7%)
Tin/Lead Alloy (Sn 62% Pb 36% Ag 2%)
The VFC1206 is a surface mountable flip chip resistor that
TABLE 1 - RESISTANCE VALUE VS
TOLERANCE AND TCR
utilizes Ultra Precision Bulk Metal® “Z” Foil. This product
differs from other Vishay Bulk Metal® Foil surface mount
devices in as much as it is installed with the foil side facing
the PCB providing better power handling capabilities. The
Foil element is isolated from the PCB by a protective
overcoating. This overcoating plus the overall product
design isolates the resistor from handling and installation
stresses.
VALUE
STANDARD
MAXIMUM
TCR**
Ω
TOLERANCE (%)*
100Ω to 30K
50Ω to < 100Ω
25Ω to < 50Ω
10Ω to < 25Ω
± 0.01%
± 0.05
± 0.1
± 2.0ppm/°C
± 3.0ppm/°C
± 4.0ppm/°C
± 5.0ppm/°C
The temperature coefficient of resistance (TCR) curve below
shows the new revolutionary “Z” Foil with its TCR of
< 0.5ppm °C. The Bulk Metal® Foil characteristics of
excellent long term stability, low noise and availability of tight
tolerance are maintained in this Flip Chip configuration. The
VFC1206 is available in any value within the specified
resistance range. The flip chip configuration is more
economical for high volume, anolog applications where high
precision is required.
± 0.25
*Tighter tolerances are available. Please contact Application
Engineering.
**Range: - 55°C to + 125°C, + 25°C reference
FIGURE 1 - NOMINAL TCR Z FOIL
TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS
TEST
MIL-PRF-55342
VFC1206
Z Alloy 0.5PPM/°C
CHARACTERISTIC E MAXIMUM
+ 150
∆R LIMITS*
± 25ppm/°C
∆R LIMITS**
+ 100
Temperature Coefficient of
Resistance
+ 50
See Table 1
∆R
R
0
- 50
Thermal Shock
± 0.10%
± 0.10%
± 0.10%
± 0.10%
± 0.20%
± 0.20%
± 0.50%
± 0.02%
± 0.02%
± 0.02%
± 0.03%
± 0.02%
± 0.03%
± 0.01%
(PPM)
Low Temperature Operation
Short Time Overload
High Temperature Exposure
Resistance to Bonding
Moisture Resistance
Life 2000hrs at + 70°C
- 100
- 150
- 200
- 50
- 55
- 25
0
+ 25
+ 50
+ 75 + 100 + 125
Ambient Temperature (°C)
The TCR for values < 100Ω are influenced by the termination
NOTES:
composition and result in a deviation from this curve.
* As shown + 0.01Ω to allow for measurement error.
**As shown + 0.01Ω to allow for measurement error for values less
than 100Ω.
SALES
• ISRAEL: foilsales.israel@vishay.com
• FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com
• AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDANAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
Document Number: 63084
Revision 13-Aug-04
www.vishay.com
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