Metal film resistor, Physics

Assignment Help:

MANUFACTURING: Nickel film is deposited on ceramic substrate. This is done by electrolytic deposition of nickel in a chemical bath containing hypophosphate. The sheet resistance is controlled by the amount of nickel and Ni-P alloys depositing on substrate.

SPECIFICATIONS:

Ohm values                                                                         0.2 ohm/sq. Cm to 10000 ohm/sq. Cm

Tolerances                                                                           > 2%

Stability                                                                               2%

Temperature coefficient of resistance                                       <+200 ppm /0C

Working voltage                                                                    300 volts

Working temperature                                                             -40 to 1500C

APPLICATIONS: Photolithographic techniques are used to manufacture this type of resistor. Alloy of nickel and chromium in a ratio 80: 20 or 50: 50 are deposited on ceramic substrate by sputtering in vacuum. Then a resistive film pattern of predetermined length and width is etched out with the help of masks. This process is cost-effective for mass production. Very low mass production. Very low temperature coefficient of resistance and stability are attained by adding small quantities of copper, aluminium, or iron.

SPECIFICATIONS:

Ohm range                                                                           1 ohm/sq-cm to 5 kilns-ohms/sq-cm

Temperature coefficient of resistance                                                                    50 ppm /0C

APPLICATIONS: There are used in semi-precision and precision applications.


Related Discussions:- Metal film resistor

Intersections, about beam intersection in gama and alpha beam?

about beam intersection in gama and alpha beam?

Rocket observation, At a distance of 4,000 ft from the launch site, a spect...

At a distance of 4,000 ft from the launch site, a spectator is observing a rocket being launched. If the rocket lifts off vertically and is rising at a speed of 600 ft/sec when it

Electric charge and coulombs law., if two metal spheres are mounted on insu...

if two metal spheres are mounted on insulators then how will we give them equal charge by using a charged glass rod?

A, what is electron

what is electron

Current electricity, if electrons are moving from east to west in a conduct...

if electrons are moving from east to west in a conductor is there a flow of current?

Determine traveling of a ball, A ball falling vertically from rest for 3 se...

A ball falling vertically from rest for 3 seconds travels very nearly: a) 14.7 meters b) 29.4 meters c) 44.1 meters d) 88.2 meters Ans: A ball falling ve

Illustrate the newton s laws of motion, Q. Illustrate the Newton s laws of ...

Q. Illustrate the Newton s laws of motion? Answer:- 1. A body at rest will stay at rest and one in motion will remain in motion until and unless acted upon by an external

Filtering and image masking, Regarding filtering, image masking & convoluti...

Regarding filtering, image masking & convolution. Assume we have the following Infra-Red image:   What filter would you use to remove the impulsive noise in the first row o

Conservation of energy, CONSERVATION OF ENERGY 1.   Potential energy ...

CONSERVATION OF ENERGY 1.   Potential energy is, as the word suggests, the energy "locked up" up somewhere and which can perform work. Potential energy Potential energy can b

Estimate the kinetic energy of a proton, A cyclotron with dee radius 45.9 ...

A cyclotron with dee radius 45.9 cm is operated at an oscillator frequency of 12.9 MHz to accelerate protons. (a) What magnitude B of magnetic field is required to achieve resonanc

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd