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Document Number: 63061
Revision 17-Aug-04
www.vishay.com
22
VSM0805
Vishay Foil Resistors
S
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
SALES
Bulk Metal
Foil Technology
Discrete Surface Mount Chip Resistors
MIL-PRF-55342G
CHARACTERISTIC. E
R LIMITS
VSM
TEST
MAXIMUM
R LIMITS*
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%
±
0.05%
Resistance to Bonding
±
0.20%
±
0.05%
Moisture Resistance
±
0.20%
±
0.10%
Life 2000 hours @ + 70
°
C
±
0.50%
±
0.025%
The VSM0805 represents the latest addition and smallest size
to the Precision Bulk Metal
Foil (BMF) technology surface
mount chip resistor series. The VSM0805 has a conventional
full wrap around termination.
The BMF technology offers designers the lowest and most
predictable absolute Temperature Coefficient Resistance
available. The TCR is a process capability not a selection
process and for the most part is independent of ohmic value
and lot related variations.
The availability of tight absolute tolerance provides a good cost
solution for the variability of other components when compiling
the total error budget. BMF offers the best stability available;
and is 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 BMF is the ultimate resistor component for
analog applications.
VALUE
(
)
TIGHTEST
TOLERANCE (%)*
250
to 12K
±
0.01
100
to < 250
±
0.02
50
to < 100
±
0.05
25
to < 50
±
0.1
10
to < 25
±
0.25
5.5
to <10
±
0.5
FEATURES
Nominal TCR: + 0.6ppm/
°
C (0 to 25
°
C)
- 0.6ppm/C
°
(+ 25
°
C to + 60
°
C)
+ 2.2ppm/
°
C (- 55
°
C to + 25
°
C)
- 1.8ppm/
°
C (+ 25
°
C to + 125
°
C)
Absolute Tolerance: to
±
0.01%
Resistance Range: 5.5
to 12K
Load Life Stability:
±
0.025% (2000 hours @ 70
°
C)
Shelf Life Stability:
0.005% Maximum
R
Voltage Coefficient: < 0.00001%/volt (< 0.1ppm/V)
Current Noise: < - 40dB
Non Inductive: < 0.08
μ
H
Terminal Finishes Available:
Lead (Pb)-free (Sn 99.3% Cu 0.7%)
Tin/Lead Alloy (Sn 62% Pb 36% Ag 2%)
*As shown + 0.01 Ohms to allow for measurement errors at low values.
The TCR for values < 100
are influenced by the termination
composition and result in a deviation from this curve. Contact our
application engineering department for detailed specification on low
values
TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE
*Tighter tolerances are available. Please contact Application
Engineering. Soldering temperatures used during installation may
cause resistance to shift up to 0.05%.
TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS
FIGURE 1 - NOMINAL TCR CURVE
Product may not
be to scale
Maximum
2.3 ppm/
±
°
C
+125
–55
–50
–25
0
+25
+50
+75
+100
+500
+400
+300
+200
+100
0
–100
–200
–300
–400
–500
Standard
±
2.0 ppm/
°
C
+2.2 ppm/
C
Nominal Chord
°
C
–1.8 ppm/
–55
°
C / +25
°
C / +125
°
C are the test points
with +25
°
C as the reference temperature
R
R
(ppm)
Nominal Resistance/
Temperature (RT) Curve
+5ppm
-5ppm