EEWORLDEEWORLDEEWORLD

Part Number

Search

303139-777R-A-B-T

Description
Fixed Resistor, Metal Foil, 0.25W, 777ohm, 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

303139-777R-A-B-T Overview

Fixed Resistor, Metal Foil, 0.25W, 777ohm, 47V, 0.05% +/-Tol, -.2,.2ppm/Cel, 2412

303139-777R-A-B-T Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerVishay
package instructionSMT, 2412
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
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 packingTR
Rated power dissipation(P)0.25 W
GuidelineMIL-PRF-55182
resistance777 Ω
Resistor typeFIXED RESISTOR
series303139
size code2412
technologyMETAL FOIL
Temperature Coefficient-.2,.2 ppm/°C
Tolerance0.05%
Operating Voltage47 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
Intel wants to fight with everyone by using Curie's name.
[i=s]This post was last edited by fyaocn on 2016-3-11 12:13[/i] 1.The hot topic recently is the Go game between AlphaGo and Baidu. But there is nothing interesting about it. It is just that we are not...
fyaocn RF/Wirelessly
Zigbee Serial Communication
Zigbee: UART0 can use position 1 (i.e. P0_2, P0_3) and position 2 (i.e. P1_4, P1_5), but how to set it if the serial port is initialized with position 2? My setting is not correct, I don’t know where ...
zhou935524 RF/Wirelessly
The navy reported to work on the first day
Today is my first day at work. My 5-month decadent jobless life is finally over. I got up early at 6 o'clock, washed up, went to the toilet, and went out at 6:30. I went to the breakfast shop to eat s...
lcofjp Talking
There are two new questions
Hello, I have already fixed the screen rotation and automatic operation, thank you very much for your help. Now I have two questions. The first one is how to burn a .TXT file into the kernel (in the W...
daniel_zhang Embedded System
ArmLinux BOOTLOADER full explanation
There are many articles about Linux BOOTLOADER on the Internet, but most of them are large programs such as vivi and blob, which are not easy to read. The compiled files are also large, and most of th...
绿茶 Linux and Android
I finally got the development board I applied for.
I saw a post on the forum about applying for the LPC1114 development board, so I applied for it. I never thought that I would get it. It was winter vacation at that time, and suddenly one day the cour...
季夏木槿 NXP MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 639  70  2763  594  1744  13  2  56  12  36 
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