EEWORLDEEWORLDEEWORLD

Part Number

Search

303139U-2K94-A-B-L

Description
Fixed Resistor, Metal Foil, 0.25W, 2940ohm, 47V, 0.05% +/-Tol, -.2,.2ppm/Cel, 2412
CategoryPassive components    The resistor   
File Size503KB,7 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Download Datasheet Parametric View All

303139U-2K94-A-B-L Overview

Fixed Resistor, Metal Foil, 0.25W, 2940ohm, 47V, 0.05% +/-Tol, -.2,.2ppm/Cel, 2412

303139U-2K94-A-B-L Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerVishay
Reach Compliance Codecompli
ECCN codeEAR99
structureMolded Chi
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
resistance2940 Ω
Resistor typeFIXED RESISTOR
series303139
size code2412
technologyMETAL FOIL
Temperature Coefficient-.2,.2 ppm/°C
Tolerance0.05%
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
About the connection between microcontroller and GPRS module
I want to make a system where a single-chip microcomputer controls a GPRS module, and the single-chip microcomputer outputs information to the GPRS and sends it to the client.... I have never been inv...
herosw Embedded System
[ST NUCLEO-H743ZI Review] (4) Modbus porting test (RTU)
The development board ST NUCLEO-H743ZI evaluated in this event is provided by STMicroelectronics. Thanks to STMicroelectronics for supporting EEWorld's evaluation! [/url] [url=https://www.stmcu.com.cn...
dsjsjf stm32/stm8
【EEWORLD TI Classroom】 About the exam
This certification exam mainly tests some functional features of 430. If it is used as a certification exam, some experiments should be added to avoid some people taking shortcuts and simply pursuing ...
sfeifei Microcontroller MCU
[Construction Monitoring and Security System] 8. Kaluga Test SD_SPI
School has started and I'm busy again, filling out various forms, filing documents, and preparing lessons. I finally find some time on weekends to continue my research on the competition project. My p...
sonicfirr DigiKey Technology Zone
Trend discussion: What will be popular in the 5G era?
I recently saw a statement: "Websites were popular in the 2G era, social software was popular in the 3G era, live streaming and short videos were popular in the 4G era, so what will be popular in the ...
EEWORLD社区 RF/Wirelessly
DIY rechargeable three-speed small fan
DIY rechargeable three-speed small fan Author: @Blue AngelDesign ideasDesign goal: Design a simple, small-sized fan control system with power management and gear control.System FrameworkConsidering th...
okhxyyo Power technology

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2899  435  1210  1652  1819  59  9  25  34  37 
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