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SMR3P124R00TCR0.2FST

Description
RES,SMT,METAL FOIL,124 OHMS,180WV,1% +/-TOL,-2,2PPM TC,2917 CASE
CategoryPassive components    The resistor   
File Size443KB,5 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Environmental Compliance
Download Datasheet Parametric View All

SMR3P124R00TCR0.2FST Overview

RES,SMT,METAL FOIL,124 OHMS,180WV,1% +/-TOL,-2,2PPM TC,2917 CASE

SMR3P124R00TCR0.2FST Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Reach Compliance Codeunknown
ECCN codeEAR99
Manufacturer's serial numberSMR3P
Number of terminals2
Resistor typeFIXED RESISTOR
Base Number Matches1
SMR3P (Z1-Foil)
Vishay Foil Resistors
Ultra High Precision Industrial Grade with the Second Generation of Z-Foil (Z1-Foil)
Molded Surface Mount Resistor with TCR down to ± 0.5 ppm/°C Maximum, PCR of ± 5 ppm
at Rated Power, Flexible Terminations, and Load Life Stability of ± 0.005 % (50 ppm)
FEATURES
Temperature coefficient of resistance (TCR):
± 0.5 ppm/°C maximum (+ 25 °C to + 125 °C)
Tolerance: to ± 0.01 %
Power coefficient of resistance (PCR)
“R due to self heating”: 5 ppm at rated power
Flexible terminations ensure minimal stress transference
from the PCB due to load induced temperature gradients
and a difference in thermal coefficient of expansions (TCE)
Electrostatic discharge (ESD) up to 25 000 V
Load life stability: ± 0.005 % (70 °C, 2000 h at rated power)
Resistance range: 100
to 15 k
Vishay Foil resistors are not restricted to standard values;
specific “as-required” values can be supplied at no extra
cost or delivery (e.g. 1K0002 vs. 1K)
Power rating: to 600 mW at 70 °C
Non-inductive, non-capacitive design
Current noise: 0.010 µV
RMS
/V of applied voltage (< - 40 dB)
Voltage coefficient: < 0.1 ppm/V
Non-inductive: < 0.08 µH typical
Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
Pattern design minimizing hot spots
Terminal finish: lead (Pb)-free or tin/lead alloy
Matched sets with TCR tracking are available upon request
For better performances please contact us
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishaypg.com
Compliant to RoHS directive 2002/95/EC
Flexible Termination
INTRODUCTION
Flexible Terminations with Zero TCR
Vishay’s new flexible termination resistor with the second
generation of Z-Foil (Z1-Foil) features new orders of accuracy,
stability and speed in a size small enough for permanent
assembly in operational equipment.
It is well known that chips of 1206 and larger dimensions
occasionally delaminate from the printed circuit board or develop
cracks. This is due to stresses introduced into the chip by handling
of the PC board and stress due to thermal shock.
Vishay has introduced a chip in a molded package with flexible
terminations which does not change due to the above, i.e. no
cracks and no separation from the board.
The SMR3P is the industry’s lowest absolute TCR, thus reducing
a major source of uncertainty in precision circuits. The SMR3P
can withstand unconventional environmental conditions,
including the extremely high temperatures and radiation-rich
environments of down-hole oil exploration and well logging, or the
deep-sea underwater repeaters in cross-ocean communications.
The exceptionally-low TCR of the new Z-Foil Bulk Metal
®
Foil
resistor derives from an elegant balance of metallurgical resistivity
and temperature-induced compressive force.
The SMR3P comes with a Load Life Stability certificate:
The Bulk Metal Z-Foil resistor has documented the most precise
load-life stability of any resistor. That’s because the resistance
element is a Bulk Metal Z-alloy that has been applied to a
substrate with a unique formation of a resistive pattern that is
maintained stress-free through the balance of the process,
including termination welding, encapsulation, marking, curing,
etc. Coatings between the element and the external case isolate
the element from external stresses. The flat planar foil very
efficiently transmits heat to the substrate and dissipates it through
the leads and through the package body. The SMR series of
surface-mounts has the further advantage of flexible terminations
to isolate the element from repetitive expansions and contractions
of the board, thereby assuring even better long-term stability.
Moreover, all Vishay Bulk Metal Foil resistors are rated to
maintain rated stability at full rated power and temperature. So it
is not necessary to de-rate the foil resistors in application.
Application includes:
1. Secondary standards
2. Feedback devices for operational amplifiers
3. Precision voltage dividers
4. Precision bridge resistors
5. Decade voltage dividers
Our application engineering department is available to advise
and make recommendations. For non-standard technical
requirements and special applications, please contact us.
APPLICATIONS
Precision amplifiers
High precision instrumentation
Medical
Automatic test equipment (ATE)
Industrial
Audio (high end stereo equipment)
EB application
Pulse application
Measurement instrumentation
R
2
R
1
-
+
V
in
V
out
SMR Pair
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
(1)
VALUE
100
to 15 k
MAXIMUM
MAXIMUM
TIGHTEST TCR (ppm/°C) TCR (ppm/°C)
TOLERANCE
(+ 25 °C to
(- 55 °C to
+ 125 °C)
+ 25 °C)
± 0.01 %
± 0.5
±2
Note
(1)
Tighter performances are available
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63185
Revision: 29-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
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