VFC1206 Datasheet, PDF (1/2 Pages) Vishay Siliconix – High Precision Flip Chip, Patents Pending (Industrialized Countries)

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
Product may not
be to scale
• 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
The VFC1206 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 shown
below compares the new revolutionary “Z” Foil with its TCR of
< 0.5ppm/°C to the original Vishay “C” Foil. 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.
• Non Inductive: < 0.08µH
TABLE 1 - RESISTANCE VALUE VS
TOLERANCE AND TCR
VALUE
Ω
STANDARD
TOLERANCE (%)*
MAXIMUM
TCR**
100Ω to 30K
± 0.01%
± 2.0ppm/°C
50Ω to < 100Ω
± 0.05
± 3.0ppm/°C
25Ω to < 50Ω
± 0.1
± 4.0ppm/°C
10Ω to < 25Ω
± 0.25
± 5.0ppm/°C
*Tighter tolerances are available. Please contact Application
Engineering.
**Range: - 55°C to + 125°C, + 25°C reference
FIGURE 1 - NOMINAL TCR
COMPARISON OF Z FOIL TO C FOIL
+ 150
+ 100
+ 50
∆R
R
0
(PPM) _{- 50}
< 0.5PPM/°C
Z Alloy
- 100
- 150
< 2PPM/°C
C Alloy
- 200
- 50
- 55
- 25
0 + 25 + 50 + 75 + 100 + 125
Ambient Temperature (°C)
C Alloy 2PPM/°C
Z Alloy 0.5PPM/°C
The TCR for values < 100Ω are influenced by the termination
composition and result in a deviation from this curve.
TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS
TEST
MIL-PRF-55342 VFC1206
CHARACTERISTIC E MAXIMUM
∆R LIMITS*
∆R LIMITS**
Temperature Coefficient of
Resistance
± 25ppm/°C
See Table 1
Thermal Shock
± 0.10%
± 0.02%
Low Temperature Operation
± 0.10%
± 0.02%
Short Time Overload
± 0.10%
± 0.02%
High Temperature Exposure
± 0.10%
± 0.03%
Resistance to Bonding
± 0.20%
± 0.02%
Moisture Resistance
± 0.20%
± 0.03%
Life 2000hrs at + 70°C
± 0.50%
± 0.01%
NOTES:
* As shown + 0.01Ω to allow for measurement error.
**As shown + 0.01Ω to allow for measurement error for values less
than 100Ω.
VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: [phone]
• GERMANY +49.9287.710 FAX: [phone]
• ISRAEL +972.3.557.0945 FAX: [phone]
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• USA [phone] FAX: [phone]
Document Number: 63084
Revision 03-Jul-02
www.vishay.com
N1