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SMR3D Datasheet(PDF) 1 Page - Vishay Siliconix

No. de pieza SMR3D
Descripción Electrónicos  High Precision Bulk Metal짰 Foil Molded Surface Mount Resistor
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Fabricante Electrónico  VISHAY [Vishay Siliconix]
Página de inicio  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SMR3D Datasheet(HTML) 1 Page - Vishay Siliconix

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SMR1D/SMR3D
Vishay Foil Resistors
High Precision Bulk Metal® Foil Molded Surface Mount Resistor
with TCR down to ± 2 ppm/°C, Flexible Terminations,
and Load Life Stability of ± 0.005 % (50 ppm)
Document Number: 63102
For any questions, contact: foil@vishay.com
www.vishay.com
Revision: 14-Nov-07
1
Any value at any tolerance available within resistance range
INTRODUCTION
The SMRxD is a precision molded surface mountable
resistor offering all the elements of precision; including low
TCR, tight tolerance, 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 low and predictable TCR and long
term stability. This surface mountable product affords similar
performance to the time tested S series molded through-hole
product.
The flexible terminations of this product also reduce
stress transference from the PCB to the resistor.
Voltage division with tight tracking < 3 ppm/°C can be
achieved with 2 randomly selected units even with a large
ratio between the two values.
Our Application Engineering Department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us.
Note
1. Tighter performances are available
FEATURES
• Temperature coefficient of resistance (TCR):
± 2 ppm°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
• Tolerance: to ± 0.01 %
• Flexible terminations ensure minimal stress
transference from the PCB due to a difference
in thermal coefficient of expansions (TCE)
• Electrostatic discharge (ESD) above 25 000 V
• Load life stability: ± 0.005 % (70 °C, 2000 h at rated power)
• Resistance range: 5 Ω to 80 kΩ (for higher and lower
values, please contact us)
• Power rating: to 600 mW at 70 °C
• Non inductive, non capacitive design
• Current noise: - 40 dB
• Voltage coefficient: < 0.1 ppm/V
• Non inductive: < 0.08 µH
• Non hot spot design
• Terminal finishes available:
lead (Pb)-free
tin/lead alloy
• Matched sets with TCR tracking are available upon request
• Any value available within resistance range (e.g. 1K234)
• Prototype samples available from 48 h. For more
information, please contact foil@vishay.com
• For better performances please review SMRxDZ datasheet
APPLICATIONS
• Military, airborne and space
• Precision amplifiers
• High precision instrumentation
• Medical
• Automatic test equipment (ATE)
• Industrial
• Audio (high end stereo
equipment)
• EB application
• Pulse application
• Measurement instrumentation
* Pb containing terminations are not RoHS compliant, exemptions may apply
TABLE 1 - THE SMRxD SERIES IS LISTED
IN
THE
FOLLOWING
DSCC
SPECIFICATIONS
MODEL
DSCC
MIL SPEC
SMR1D
06020
MIL-PRF-55182
SMR3D
06021
MIL-PRF-55182
TABLE 2 - TOLERANCE AND TCR VERSUS
RESISTANCE VALUE
(- 55 °C to + 125 °C, + 25 °C Ref.)
VALUE
STANDARD
TOLERANCE1)
TYPICAL TCR AND
MAX. SPREAD1)
(ppm/°C)
50
Ω to 80 kΩ
± 0.01 %
± 2 ± 3
20
Ω to < 50 Ω
± 0.02 %
± 2 ± 4
10
Ω to < 20 Ω
± 0.05 %
± 2 ± 6
5
Ω to < 10 Ω
± 0.1 %
± 2 ± 8
FIGURE 1 - POWER DERATING CURVE
Available
Pb-free
RoHS*
COMPLIANT
R
1
R
2
V
in
V
out
-
+
SMRxD
200
175
150
125
100
75
50
25
0
- 75
- 25
+ 25
+ 75
+ 125
+ 175
Ambient Temperature (°C)
- 55 °C
+ 70 °C


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