EEWORLDEEWORLDEEWORLD

Part Number

Search

302074-4ZTP78R700TB

Description
Fixed Resistor, Metal Foil, 1W, 78.7ohm, 500V, 0.01% +/-Tol, -.2,.2ppm/Cel,
CategoryPassive components    The resistor   
File Size115KB,6 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Environmental Compliance
Download Datasheet Parametric View All

302074-4ZTP78R700TB Overview

Fixed Resistor, Metal Foil, 1W, 78.7ohm, 500V, 0.01% +/-Tol, -.2,.2ppm/Cel,

302074-4ZTP78R700TB Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid979566552
Reach Compliance Codeunknown
ECCN codeEAR99
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 W
resistance78.7 Ω
Resistor typeFIXED RESISTOR
seriesHZ SERIES-OTHER
technologyMETAL FOIL
Temperature Coefficient0.2 ppm/°C
Terminal surfaceTin (Sn)
Tolerance0.01%
Operating Voltage500 V
HZ Series (Z-Foil) with Zero TCR
Vishay Foil Resistors
New Generation of Secondary Standards Hermetically Sealed Construction Ultra High
Precision Z-Foil Technology Resistors with TCR of ± 0.2 ppm/°C, Tolerance of ± 0.001 %
and Load Life Stability of ± 0.002 % (Metrology, Laboratory, Instrumentation, Industrial)
FEATURES
Temperature coefficient of resistance (TCR):
± 0.2 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 1.1 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 coefficient “ΔR due to self heating”:
5 ppm at rated power with the Z-Foil technology
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
Power rating: 0.3 W to 2.5 W at + 25 °C (depending on
model - see table 2)
Non-inductive, non-capacitive design
Non hot spot design
Rise time: 1 ns effectively no ringing
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
Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
Non-inductive: < 0.08 µH
Terminal finish available: lead (Pb)-free or tin/lead alloy
Impervious to harmful environments - oil filled
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishay.com
For better performances (values, TCR, tolerance, stability),
please contact us
INTRODUCTION
The Z-Foil based oil filled, hermetically sealed HZ Series
resistors represent an industry breakthrough. The hermetic
sealing eliminates the ingress of moisture and oxygen, while
the oil acts as a thermal conductor, thus eliminating
long-term degradation elements of unsealed resistors, while
at the same time allowing the device to accept short periods
of overload without degradation.
The Z-Foil technology provides a significant reduction of the
resistive components, sensitivity to ambient temperature
variations (TCR) and applied power changes (PCR). When
combined with the hermetic sealing and oil filling, the
HZ Series resistors become
the most precise and stable
resistors available.
They are used as the most precise
secondary standards for ultra precision metrology.
With accuracies of ± 0.001 % (10 ppm) and a resistance
range from 5
Ω
to 1.1 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 HZ 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)
TYPICAL TCR AND
MAX. SPREAD
(- 55 °C to + 125 °C, + 25 °C ref.)
(ppm/°C)
± 0.2 ± 2
± 0.2 ± 3
± 0.2 ± 4
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
100 to < 1M1
50 to < 100
5 to < 50
Note
• For maximum TCR < 1 ppm/°C, see VHP100 and contact
application engineering
Resistance Change (ppm)
Time (Days)
Document Number: 63120
Revision: 03-Dec-09
For any questions, contact:
foil@vishay.com
www.vishay.com
1
Received a great gift
Yesterday I received a gift from the forum. It was won by participating in an event a few days ago. I am going to show it off here. At the same time, I would like to thank EEWORLD. I hope that there w...
ddllxxrr Talking
Solicit opinions and organize a national DIY event!
:) I have been wanting to do a DIY recently, but I have never had any ideas. Today, I suddenly thought of an ancient thing - a breathing light, which is actually a light that turns on and off. I plan ...
小小白 51mcu
PIC18 return value problem
void read_ram(position_type *d) { INT24U r_point=d->read_ram_pointer; unsigned char recdata; TBLPTRL = r_point&0xFF; TBLPTRH = (r_point>>8)&0xFF; TBLPTRU = (r_point>>16)&0xFF; _asm TBLRD _endasm recda...
jialilv Microchip MCU
Schematic diagram data sheet and program code for 51 STM32 and other microcontrollers
[i=s] This post was last edited by paulhyde on 2014-9-15 02:58 [/i] NRF24L01 wireless module super complete information...
风灵 Electronics Design Contest
Where can I download the WINCE patch file?
Where can I download the WINCE patch file?...
ytpen Embedded System
Encountered a problem about EP2C35
Last week, when debugging, I encountered a problem. The same program behaved differently on two identical hardware. One worked fine, and the other did not. Why?...
eeleader FPGA/CPLD

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2218  2717  1654  2384  2058  45  55  34  48  42 
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