EEWORLDEEWORLDEEWORLD

Part Number

Search

303140-665R-Q-B-L

Description
Fixed Resistor, Metal Foil, 0.6W, 665ohm, 127V, 0.02% +/-Tol, -.2,.2ppm/Cel, 2917
CategoryPassive components    The resistor   
File Size503KB,7 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Download Datasheet Parametric View All

303140-665R-Q-B-L Overview

Fixed Resistor, Metal Foil, 0.6W, 665ohm, 127V, 0.02% +/-Tol, -.2,.2ppm/Cel, 2917

303140-665R-Q-B-L Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerVishay
package instructionSMT, 2917
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
structureMolded Chip
Manufacturer's serial number303140
Number of terminals2
Maximum operating temperature175 °C
Minimum operating temperature-55 °C
Package height2.79 mm
Package length7.29 mm
Package formSMT
Package width4.32 mm
method of packingBulk
Rated power dissipation(P)0.6 W
GuidelineMIL-PRF-55182
resistance665 Ω
Resistor typeFIXED RESISTOR
series303140
size code2917
technologyMETAL FOIL
Temperature Coefficient-.2,.2 ppm/°C
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
Design of temperature acquisition module
[i=s] This post was last edited by paulhyde on 2014-9-15 09:51 [/i] My graduation project is a temperature acquisition module. The following is the requirement that the LCD display data can be modifie...
applezjm Electronics Design Contest
STM32 strange problem: PWM and UART1 fighting
For STM32, we have developed many products, but none of them are new. Even for functions that have been used, the code that can pass the previous product may not be able to pass this one. For example,...
zhaojun_xf stm32/stm8
How to view the registry of WIN CE?
How can I view the registry information of Windows CE like running regedit in XP? ? ? Thank you...
cxdao Embedded System
Design of a Chinese Speech Synthesis System Based on DSP
Abstract: This paper proposes a Chinese speech synthesis system based on TI 's TMS320 VC5402 . The whole system is designed with TMS320VC5402 as the core circuit, adopts a syllable-based neutral tone,...
pp22 DSP and ARM Processors
The company is urgently hiring part-time workers (3000 yuan/month, daily payment) suitable for working at home or at school
Job title: Part-time online text input worker. Job requirements: Ability to type on a computer, understand WORD software, and be relatively proficient in surfing the Internet. No restrictions on regio...
jordan11151985 Embedded System
Pocket PC 2003 Chinese display problem
After installing EVC 4.0 + PPC 2003 + PPC2003SE CHS, I can run the Chinese simulator, but when developing the program, the Chinese on the controls is displayed as garbled characters. Please tell me ho...
qewgqerr Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1483  267  539  2529  1506  30  6  11  51  31 
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