VFC1506
Vishay Foil Resistors
High Precision Flip Chip,
(Patents Pending in Industrialized Countries)
FEATURES
• Nominal TCR: 0.5ppm/°C (- 55°C to + 125°C)
• Resistance Range: 10Ω to 40kΩ
• 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: < 0.08
Product may not
be to scale
• Terminal Finishes Available:
Lead (Pb)-free (Sn 99.3% Cu 0.7%)
Tin/Lead Alloy (Sn 62% Pb 36% Ag 2%)
The VFC1506 is a surface mountable flip chip resistor that
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.
The temperature coefficient of resistance (TCR) curve below
shows the new revolutionary “Z” Foil with its nominal 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
VFC1506 is available in any value within the specified
resistance range. The flip chip configuration is more
economical for high volume, analog applications where high
precision is required.
TABLE 1 - RESISTANCE VALUE VS
TOLERANCE AND TCR
VALUE
(Ω)
STANDARD
TOLERANCE (%)*
MAXIMUM
TCR**
100Ω to 40kΩ
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
± 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
VFC1506
Z Foil 0.5PPM/°C
CHARACTERISTIC E MAXIMUM
+ 150
+ 100
∆R LIMITS*
± 25ppm/°C
∆R LIMITS**
Temperature Coefficient of
Resistance
See Table 1
+ 50
∆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
- 25
0
+ 25
+ 50
+ 75 + 100 + 125
- 55
Ambient Temperature (°C)
The TCR for values < 100Ω are influenced by the termination
NOTES:
* As shown + 0.01Ω to allow for measurement error.
**As shown + 0.01Ω to allow for measurement error for values less
than 100Ω.
composition and result in a deviation from this curve.
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: 63083
Revision 13-Aug-04
www.vishay.com
N1
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