EEWORLDEEWORLDEEWORLD

Part Number

Search

303139U-54R2-D-B-L

Description
Fixed Resistor, Metal Foil, 0.25W, 54.2ohm, 47V, 0.5% +/-Tol, -.2,.2ppm/Cel, 2412
CategoryPassive components    The resistor   
File Size503KB,7 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Download Datasheet Parametric View All

303139U-54R2-D-B-L Overview

Fixed Resistor, Metal Foil, 0.25W, 54.2ohm, 47V, 0.5% +/-Tol, -.2,.2ppm/Cel, 2412

303139U-54R2-D-B-L Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerVishay
Reach Compliance Codecompliant
ECCN codeEAR99
structureMolded Chip
Manufacturer's serial number303139
Number of terminals2
Maximum operating temperature125 °C
Minimum operating temperature-55 °C
Package height2.49 mm
Package length5.99 mm
Package formSMT
Package width3.2 mm
method of packingBulk
Rated power dissipation(P)0.25 W
resistance54.2 Ω
Resistor typeFIXED RESISTOR
series303139
size code2412
technologyMETAL FOIL
Temperature Coefficient-.2,.2 ppm/°C
Tolerance0.5%
Operating Voltage47 V
303139, 303140
Vishay Foil Resistors
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)
“ΔR 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) up to 25 000 V
Load life stability: ± 0.005 % (70 °C, 2000 h at rated power)
Resistance range: 5
Ω
to 40 kΩ
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 typical
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@vishaypg.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
Ω
to 40 kΩ
50
Ω
to < 250
Ω
20
Ω
to < 50
Ω
10
Ω
to < 20
Ω
5
Ω
to < 10
Ω
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-Jul-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
1
After Tornado2.2 creates a hard disk boot disk, the display prints a + sign and then stops responding
At first, it was normal to boot from the hard disk, and we could ping, telnet, and FTP. After we switched to vxWorks files, it repartitioned the hard disk when it started, and then it could not start,...
powerding Embedded System
Optimizing DSP Power Budget by Adjusting Voltage Regulators
[align=left][color=rgb(85, 85, 85)][font="][size=4] System-level power conservation and power budget optimization are key in many applications. For example, data center operators strive to control ene...
Jacktang DSP and ARM Processors
position2Go Review 3. Resources
All available resources for Position2Go are available in the Infineon Toolbox, which can be downloaded from https://www.infineon.com/cms/en/tools/landing/infineontoolbox.html .After downloading and in...
freebsder Special Edition for Assessment Centres
If FPGA and MCU are combined on a circuit board, what would you choose?
In an electronic design competition, if you need to use FPGA and MCU to solve a problem, what is your best combination? What is your reason? For example: EP2C8Q208C8+STC12C5A60S2 MCU is used for butto...
Leo417love FPGA/CPLD
How do engineers deal with the “half-life of engineering knowledge”?
Once, I was searching for some training materials online and came across a website that claimed that the half-life of engineering knowledge is about two years. This means that as an engineer, half of ...
凯哥 Talking about work
I don't have any relevant knowledge, but I'm very interested in PLC. How can I learn it?
I have no relevant electrical knowledge, but I am very interested in PLC. As a rookie who knows nothing about it, how should I start learning? I hope the teachers can give me some pointers so that I c...
cjrvu Microchip MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 851  1610  980  1268  1628  18  33  20  26  47 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号