EEWORLDEEWORLDEEWORLD

Part Number

Search

302074-5T121R00QB

Description
Fixed Resistor, Metal Foil, 1.25W, 121ohm, 500V, 0.02% +/-Tol, -2,2ppm/Cel,
CategoryPassive components    The resistor   
File Size451KB,6 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Environmental Compliance
Download Datasheet Parametric View All

302074-5T121R00QB Overview

Fixed Resistor, Metal Foil, 1.25W, 121ohm, 500V, 0.02% +/-Tol, -2,2ppm/Cel,

302074-5T121R00QB Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid850612961
Reach Compliance Codecompliant
Country Of OriginIsrael
ECCN codeEAR99
YTEOL10
structureHermetically Sealed
JESD-609 codee3
Lead diameter0.64 mm
Lead length25.4 mm
Number of terminals4
Maximum operating temperature125 °C
Minimum operating temperature-55 °C
Package diameter12.7 mm
Package length25.4 mm
Package form4 Terminals
method of packingBulk
Rated power dissipation(P)1.25 W
resistance121 Ω
Resistor typeFIXED RESISTOR
seriesH(OTHER)
technologyMETAL FOIL
Temperature Coefficient2 ppm/°C
Terminal surfaceTin (Sn)
Tolerance0.02%
Operating Voltage500 V
H Series
Vishay Foil Resistors
New Generation of Secondary Standards Hermetically Sealed High Precision Bulk
Metal
®
Foil Technology Resistors with TCR of ± 2 ppm/°C, Tolerance of ± 0.001 % and
Load Life Stability of ± 0.005 % (Metrology, Laboratory, Instrumentation, Industrial)
FEATURES
Temperature coefficient of resistance (TCR):
± 2 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C
ref.).
For
ultra
high
performances
(instrumentation and metrology) please refer to
the last page
Resistance range: 5
Ω
to 1.84 MΩ (higher or
lower values of resistance available)
Vishay Foil resistors are not restricted to standard values;
specific “as required” values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
Power rating: 0.3 W to 2.5 W at + 25 °C (depending on
model - see table 2)
Tolerance: to ± 0.001 % (10 ppm)
Load life stability to ± 0.002 % (20 ppm) at 25 °C, 2000 h
at rated power
Load life stability can be considerably improved
through in-house stabilization
Shelf life stability: ± 2 ppm for at least 6 years
(unaffected by humidity)
Electrostatic discharge (ESD) up to 25 000 V
Rise time: 1 ns effectively no ringing
Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
Current noise: 0.010 µV
RMS
/V of applied voltage (< - 40 dB)
Thermal EMF: 0.05 µV/°C typical
Voltage coefficient: < 0.1 ppm/V
Non-inductive: < 0.08 µH
Non-inductive, non-capacitive design
Non hot spot design
Terminal finish available: lead (Pb)-free or tin/lead alloy
Impervious to harmful environments - oil-filled
Compliant to RoHS directive 2002/95/EC
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishaypg.com
For better performances (values, TCR, tolerance, stability),
please see the HZ series
INTRODUCTION
The H series resistors are oil-filled, hermetically sealed ultra
precision resistors and are used as secondary standards for
metrology applications.
The hermetic sealing eliminates the ingress of moisture and
oxygen, while the oil acts as a thermal conductor, thus
eliminating the long-term degradation elements of unsealed
resistors, while at the same time allowing the device to
accept short periods of overload without degradation.
Vishay’s Bulk Metal
®
Foil outperforms all other resistor
technologies available today for applications that require
precision and stability. When combined with the hermetic
sealing and oil filling, the H series resistors become
the most
precise and stable resistors available.
With accuracies of 0.001 %, a resistance range from 5
Ω
to 1.84 MΩ, and long term shelf life of less than 2 ppm,
these devices are virtually secondary standards that can be
carried in sets for daily or periodic calibration of factory
measurement equipment.
The H series is available with laboratory and metrology
level precision and long-term stability with additional
in-house oriented processes such as: chip stabilization,
special TCR plotting, additional treatments for ultra
stability and special post manufacturing operations
(PMO). (Please refer to the last page)
TABLE 1 - TCR VS. RESISTANCE VALUE
RESISTANCE
VALUE (Ω)
100 to < 1M84
50 to < 100
5 to < 50
TYPICAL TCR AND MAX. SPREAD
(- 55 °C to + 125 °C, + 25 °C ref.)
(ppm/°C)
± 2 ± 2.5
± 2 ± 3.5
± 2 ± 4.5
FIGURE 1 - SHELF LIFE - VHA518-11
12K9 VS. QHE
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
- 0.1
0
100 200 300 400 500 600 700 800 900 1000
Note
• For maximum TCR < 1 ppm/°C, see VHP100 and contact
application engineering
* Pb containing terminations are not RoHS compliant, exemptions may apply
Resistance Change (ppm)
Time (Days)
Document Number: 63006
Revision: 23-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
1
Good material for MSP430 for industrial control reliability
This technical document introduces three different ESD aspects, mainly to help provide suggestions for system-level robustness during the design process.The three aspects are:1. Device-level ESD testi...
wstt Microcontroller MCU
Pingtouge RVB2601 board-GPIO
For embedded applications, the simplest test is to light up the LED. Now I will do an experiment to light up the LED using GPIO. From the limited information, CH2601 uses the E906 core and the system ...
bigbat Domestic Chip Exchange
I have encountered a problem in learning TM4C123GH6PM, ADC, please help! !
TM4C123GH6PM, ADC learning encountered a problem, that is, the voltage data cannot be collected, the program is as follows SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |SYSCTL_XTA...
wycong Microcontroller MCU
[TI recommended course] #DC/DC switching regulator packaging innovation#
//training.eeworld.com.cn/TI/show/course/5640...
朝哥Carry TI Technology Forum
[LaunchPad] 【TI's First Low Power Design Competition】Signal Generation for Wireless Charging
It has been a while since I got the team! I am really sorry, I am dizzy with so many things to do, but it is still good, I hope you can do your best! Let me talk about some humble experience. There ar...
童云飞 Microcontroller MCU
Comparison of values assigned between signals, variables, and constants
Please help me find the following code compilation error, I can't find the problem, thank you for your advice library ieee ;use ieee.std_logic_1164.all ;use ieee.std_logic_arith.all ;use ieee.std_logi...
gz475514589 FPGA/CPLD

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 910  1817  1237  1078  627  19  37  25  22  13 
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