VSM1206 Datasheet, PDF (1/2 Pages) Vishay Siliconix – Bulk Metal® Foil Technology Discrete High Precision Surface Mount Chip Resistor

VSM1206
Vishay Foil Resistors
Bulk Metal^® Foil Technology
Discrete High Precision Surface Mount Chip Resistor
Product may not
be to scale
The VSM1206 Precision Surface Mount Chip Resistor utilizes
Ultra Precision Bulk Metal^® Z Foil (BMZF) for the resistive
element.
The BMZF technology provides inherently an extremely low
and predictable Temperature Coefficient of Resistance
(TCR), remarkable load life stability, low noise and availability
of tight tolerance.
The TCR is a process capability not a selection process and
for most of the range is independent of ohmic value and lot
related variations. The TCR curve on Fig. 1 demonstrates
the new revolutionary Z Foil with its TCR nominal of
0.5ppm/°C.
A voltage divider can be fashioned by using two arbitrarily
selected VSM1206s with a resultant tracking specification
of < 3ppm/°C. Extremely low tracking of < 1ppm/°C can be
supplied upon request.
The VSM1206 has a conventional full wrap around robust
termination which insures safe handling during manufacturing
process, as well as providing stability during the multiple
thermal cyclings it will see over its service life.
The availability of tight absolute tolerance provides a good
cost solution for the variability of other components when
compiling the total error budget. BMZF offers the best
stability available; and is more than an order of magnitude
better than thin film technology. The noise generated by
the resistor is non measurable and its design and
construction make it well suited for high frequency
applications. The BMZF is the ultimate resistor component
for analog applications.
FEATURES
• High Precision: Tolerance to ± 0.01% (see table 1)
• Low Temperature Coefficient of Resistance:
Nominal TCR: + 0.5ppm/°C (- 55°C to + 125°C)
• Resistance Range: 10Ω to 30KΩ
• Load Life Stability: ± 0.01% maximum ∆R under full
rated power at + 70°C for 2000 hours.
• Shelf Life Stability: 50ppm/year (0.005%) maximum ∆R
non-hermetically sealed
• Power Rating at + 70°C: 125mW
• Maximum Working Voltage: 61V
• Maximum Weight: 11mg
• Voltage Coefficient: < 0.00001%/volt (< 0.1ppm/V)
• Current Noise: < 0.01µV(rms)/volt of applied voltage
• Non Inductive: < 0.08nH
TABLE 1 TOLERANCE AND TCR VS
RESISTANCE VALUE
VALUE
(Ω)
STANDARD
TOLERANCE* (%)
MAXIMUM
TCR**
100Ω to 30KΩ
± 0.01
± 2ppm/°C
50Ω to < 100Ω
± 0.05
± 3ppm/°C
25Ω to < 50Ω
± 0.1
± 3ppm/°C
10Ω to < 25Ω
± 0.25
± 4ppm/°C
*Tighter tolerances are available. Please contact Vishay Application Engineering.
**Over MIL range (- 55°C to + 125°C, + 25°C reference)
FIGURE 1 - NOMINAL TCR CURVE
∆R
R
Z Foil 0.5PPM/°C
+ 150
(PPM)
+ 100
+ 50
0
- 50
- 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
composition and result in a deviation from this curve.
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Document Number: 63090
Revision 21-May-03