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303139-32R000-DBT

Description
Fixed Resistor, Metal Foil, 0.25W, 32ohm, 47V, 0.5% +/-Tol, -.2,.2ppm/Cel, 2412,
CategoryPassive components    The resistor   
File Size2MB,7 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Download Datasheet Parametric View All

303139-32R000-DBT Overview

Fixed Resistor, Metal Foil, 0.25W, 32ohm, 47V, 0.5% +/-Tol, -.2,.2ppm/Cel, 2412,

303139-32R000-DBT Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
Reach Compliance Codecompliant
ECCN codeEAR99
structureRectangular
JESD-609 codee0
Number of terminals2
Maximum operating temperature175 °C
Minimum operating temperature-55 °C
Package height2.49 mm
Package length5.99 mm
Package shapeRECTANGULAR PACKAGE
Package formSMT
Package width3.2 mm
method of packingTR
Rated power dissipation(P)0.25 W
GuidelineMIL-PRF-55182
resistance32 Ω
Resistor typeFIXED RESISTOR
size code2412
technologyMETAL FOIL
Temperature Coefficient-.2,.2 ppm/°C
Terminal surfaceTin/Lead (Sn/Pb)
Tolerance0.5%
Operating Voltage47 V
303139, 303140
Models # 303139 and 303140 - Molded Surface Mount Space and Military
Grade Resistors SMRxDZ with Screen/Test Flow in Compliance with
EEE-INST-002, (Tables 2A and 3A, Film/Foil, Level 1) and MIL-PRF-55182
FEATURES
Temperature coefficient of resistance (TCR):
± 0.2 ppm°C typical (- 55 °C to + 125 °C, + 25 °C ref.)
Tolerance: to ± 0.02 %
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 a difference in thermal coefficient of
expansions (TCE)
Electrostatic discharge (ESD): at least to 25 kV
Load life stability: ± 0.005 % (70 °C, 2000 h at rated power)
Resistance range: 5
to 40 k
Vishay Foil resistors are not restricted to standard values;
specific “as requested” values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
Maximum power: 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 finish: tin/lead alloy
Matched sets with TCR tracking are available upon
request
For oriented performances please contact us
For prototype units, append a “U” to the model number
(example: 303139U). These units pass all tests per table 3
(page 4) with no destructive qualification testing required
(table 4, page 4). For more information, please contact
foil@vpgsensors.com
INTRODUCTION
The 303139, 303140 are ultra high precision molded surface
mountable resistors offering all the elements of precision;
including low TCR, tight tolerance, long term stability, low
noise, low thermal EMF, and non-measurable voltage
coefficient. One of the important parameters influencing
stability is the temperature coefficient of resistance (TCR).
Although the TCR of foil resistors is considered extremely
low, this characteristic has been further refined over the
years. These resistors utilize ultra high precision Bulk Metal
®
Z-Foil.
The Z-Foil technology provides a significant reduction of
the resistive element’s sensitivity to ambient temperature
variations (TCR) and to self heating when power is applied
(power coefficient).
Voltage division with tight tracking < 2 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.
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
(- 55 °C to + 125 °C, + 25 °C ref.)
VALUE
250
to 40 k
50
to < 250
20
to < 50
10
to < 20
5
to < 10
ABSOLUTE
TOLERANCE
± 0.02 %
± 0.05 %
± 0.1 %
± 0.2 %
± 0.5 %
TYPICAL TCR AND
MAX. SPREAD
(ppm/°C)
± 0.2 ± 1.8
± 0.2 ± 1.8
± 0.2 ± 2.8
± 0.2 ± 4.8
± 0.2 ± 6.8
FIGURE 1 - POWER DERATING CURVE
200
175
Rated Power (%)
150
125
100
75
50
25
0
- 75
- 25
+ 25
+ 75
+ 125
Ambient Temperature (°C)
+ 175
- 55 °C
+ 70 °C
Document Number: 63165
Revision: 27-May-15
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
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