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SMR1D

Description
Bulk Metal Foil Technology Precision Molded Surface Mount Resistor
CategoryPassive components    The resistor   
File Size72KB,4 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
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SMR1D Overview

Bulk Metal Foil Technology Precision Molded Surface Mount Resistor

SMR1D Parametric

Parameter NameAttribute value
MakerVishay
package instruction,
Reach Compliance Codeunknow
Other featuresULTRA HIGH PRECISION, NON INDUCTIVE
Manufacturer's serial numberSMR1D
Installation featuresSURFACE MOUNT
Number of terminals2
Maximum operating temperature175 °C
Minimum operating temperature-55 °C
Package shapeRECTANGULAR PACKAGE
method of packingBULK; TR
Rated temperature70 °C
Resistor typeFIXED RESISTOR
surface mountYES
technologyMETAL FOIL
Terminal shapeWRAPAROUND
Operating Voltage73 V
SMR1D
Vishay Foil Resistors
SURFACE MOUNT
Bulk Metal
®
Foil Technology
Precision Molded Surface Mount Resistor
FEATURES
• Small footprint
• Temperature Coefficient of Resistance — Nominal TCR:
+ 0.6 ppm/°C (0°C 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)
• Value Range: 5Ω to 33KΩ
The SMR1D is a truly precision molded surface mountable
resistor offering all the elements of precision; including lowest
TCR, tight tolerances, long term stability, low noise, low thermal
EMF, and non-measurable voltage coefficient. It utilizes the
Bulk Metal
®
Foil technology for the resistive element with its
inherent and legendary low predictable TCR* and long term
stability. This surface mountable product affords similar
performance to the time tested S102 molded through-hole product.
Voltage division with tight tracking < 3ppm can be achieved
with 2 randomly selected units even with a large ratio between
the two values.
The molded SMR1D, while slightly larger and heavier than the
Bulk Metal
®
Foil VSM surface mountable chip resistor, has a
rugged construction capable of withstanding significant thermal
cycling and allows for board installation without concern for
tolerance shifts due to manufacturing processes or mechanical
stresses.
*Reference Reason 1 in “7 Technical Reasons to Specify BMF
Resistors.”
• Tight Tolerances available to
±
0.01 percent
• Power: 0.25 watts @ + 70°C
• Excellent Long Term Stability:
±
0.02% maximum
• Low Thermal EMF: 0.1 m V/°C maximum
• Low Noise, High Frequency Operation
• Matched Sets Available
Product may not
be to scale
TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE
VALUE
(
)
100Ω to 33KΩ
20Ω to < 100Ω
10Ω to < 20Ω
5Ω to < 10Ω
STANDARD TOLERANCE
(%)
±
0.01%
±
0.02%
±
0.05%
±
0.10%
FIGURE 1 - NOMINAL TCR
FIGURE 2 - POWER DERATING CURVE
–55
Percent of Rated Power @ +125°C
–50
+500
+400
+300
+200
+100
–25
0
+25
+50
+75
+100
+125
200%
175%
150%
125%
100%
75%
50%
25%
0
–55°C
+70°C
-5
+5
pp
m
pp
m
Nominal Resistance/
Temperature (RT) Curve
∆R
R
(ppm)
0
–100
–200
–300
–400
–500
Maximum
Spread
±2.3
ppm/°C
+2.2 ppm/°C
Nominal Chord
Slope (TCR)
–1.8 ppm/°C
Nominal Chord
Slope (TCR)
Standard
Spread
±2.0
ppm/°C
–55°C / +25°C / +125°C are the test points
with +25°C as the reference temperature
–50
–25
0
+25
+50
+75
+100 +125 +150 +175 +200
Ambient Temperature (°C)
VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31
• GERMANY +49.9287.710 FAX: +49 9287.70435
• ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
• ITALY + 39.2.300.11919 FAX: +39.2.300.11999
• JAPAN +81.3.5464.6411 FAX: +81.3.5464.6433
• SINGAPORE +65.788.6668 FAX: +65.788.0988
• SWEDEN +46.8.594.70590 FAX: +46.8.594.70581
• UK +44 191 514 8237 FAX: +44 1953 457 722
• USA +1 610 407-4800 FAX: +1 610 640-9081
www.vishay.com
18
Document Number: 63022
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