EEWORLDEEWORLDEEWORLD

Part Number

Search

303140-796R00-QBT

Description
Fixed Resistor, Metal Foil, 0.3W, 796ohm, 127V, 0.02% +/-Tol, 0.2ppm/Cel, Surface Mount, 2917, CHIP
CategoryPassive components    The resistor   
File Size1MB,7 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Download Datasheet Parametric View All

303140-796R00-QBT Overview

Fixed Resistor, Metal Foil, 0.3W, 796ohm, 127V, 0.02% +/-Tol, 0.2ppm/Cel, Surface Mount, 2917, CHIP

303140-796R00-QBT Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
package instructionSMT, 2917
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresNON INDUCTIVE, ULTRA HIGH PRECISION
structureRectangular
JESD-609 codee0
Manufacturer's serial number303140
Installation featuresSURFACE MOUNT
Number of terminals2
Maximum operating temperature175 °C
Minimum operating temperature-55 °C
Package height2.79 mm
Package length7.29 mm
Package shapeRECTANGULAR PACKAGE
Package formSMT
Package width4.32 mm
method of packingTR
Rated power dissipation(P)0.3 W
Rated temperature125 °C
GuidelineMIL-PRF-55182
resistance796 Ω
Resistor typeFIXED RESISTOR
size code2917
surface mountYES
technologyMETAL FOIL
Temperature Coefficient.2 ppm/°C
Terminal surfaceTin/Lead (Sn/Pb)
Terminal shapeWRAPAROUND
Tolerance0.02%
Operating Voltage127 V
Base Number Matches1
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
msp430 about calculating phase difference.
Can we use two timers, timeA and timeB, to calculate separately? For example, timeA is used to find the period of the wave. timeB stops timing when the second wave detects a high level. Use this numbe...
Jiaoeeer Microcontroller MCU
Flexible integrated application of robots and machine tools enters the manufacturing industry in central China
[align=left][font=sans serif][color=#000]In recent years, the application of domestic robots in industrial intelligence has developed rapidly. In order to promote intelligent manufacturing in Henan an...
zzhaiming Robotics Development
STM8 can be debugged normally but cannot run after downloading the program
This is my first time using STM8. I wrote an STM8S003F program in IAR and it can be debugged normally after downloading it to the microcontroller, but it cannot run after downloading it through STVP. ...
liushikai stm32/stm8
The high-frequency noise test failed. How can I improve the anti-interference ability?
We recently developed a TFT-LCD for PDA, but it failed the customer's high-frequency noise test. How can we improve the anti-interference capability?...
javasy Embedded System
TI Power
When I was in school, I was always using linear power supplies such as 7805. This power supply was enough for the development board, and I didn't have to consider factors such as performance and power...
spring06 Analogue and Mixed Signal
Principle and Application of MOTOROLA 8-bit Enhanced Single-Chip Microcomputer M68HC11
Title: MOTOROLA 8-bit Enhanced MCU M68HC11 Principles and Applications Author: Gang Hanbing, Qi Qiuqun Publisher: Beijing Institute of Technology Press, 1993.2 Pages and Height: 404 pages; 26cm Introd...
wzt MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1352  2331  1870  331  1154  28  47  38  7  24 
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