Construction and Types of Wirewound Resistors

Posted by Tomáš Zedníček
On March 6, 2020
0

As the name indicates wire-wound resistors consist of a resistive wire wound on a bobbin and supplied with a protective coating. Since the resistance wire never can serve as a termination wire because of solderability requirements, it has to be connected to the terminal leads or the like, usually by welding or brazing. The higher the resistance value the thinner the wire that has to be used and thus the greater the risk of open circuits due to deficient weldings, damage from corrosion or from mechanical handling. Below a diameter, Φ, of 0.1 mm (4 mils) the failure rate grows rapidly.

ABC of CLR, EEE Components

Talking about Non-Wirewound Resistors: Carbon, SMD and Network

Posted by Tomáš Zedníček
On March 5, 2020
0

Carbon film resistors sometimes are called surface layer resistors. Better qualities are classified as “stable” with a ΔR/R that will stop at ≤1%. Their role has, to a great extent, been taken over by the metal film but they still have a market, especially as cheap 5 percent E 24 components. At new designs, one should yet consider replacing them with metal film resistors that also are offered in E 24, 5 percent.

EEE Components, PASSIVES

Electronic Products has announced the finalists for the 2019 Product of the Year Awards

Posted by doEEEt Media Group
On February 6, 2020
0

Electronic Products has announced the finalists for the 2019 Product of the Year Awards. The annual awards, now in its 44th year, recognizes outstanding products that represent any or all of the following qualities: a significant advancement in a technology or its application, an exceptionally innovative design, a substantial achievement in price/performance, improvements in design performance, and the potential for new product designs/opportunities.

EEE Components, PASSIVES

Ohmite Releases Thick Film Resistors on Ceramic Heatsink

Posted by doEEEt Media Group
On February 6, 2020
0

Ohmite TRH Thick Film Resistors combine two products in one by using advanced thick film printing processes to place a resistor onto a ceramic heatsink.

ABC of CLR, EEE Components, PASSIVES

Basic Principles of Potentiometers/Variable Resistors

Posted by Tomáš Zedníček
On January 30, 2020
4

POTENTIOMETERS Concepts and Definitions Potentiometers are electromechanical components and therefore exposed not only to the weaknesses of fixed resistors but also to all the failure possibilities of electromechanics. The reliability is comparatively poor. It will be even lower if we try to tool the shafts for our own special applications!!

EEE Components, PASSIVES

Ohmcraft High-Voltage Resistors Mitigate Tin Whisker Growth

Posted by doEEEt Media Group
On January 29, 2020
0

High-Voltage Resistors Mitigate Tin Whisker Growth. “In military electronics, spacecraft and medical devices, long term reliability is absolutely critical,”

EEE Components, PASSIVES

VPG foil options: DSCC drawing vs. EEE-INST-002 testing

Posted by Manuel Sánchez Ruiz
On January 27, 2020
0

VPG Foil Resistors offers for some of its series, three different manufacturing flow options: the standard, the DLA drawing and the EEE-INST-002

EEE Components, ENDURANCE, ENVIRONMENTAL & RADIATION, PASSIVES, TESTING

Ohmcraft Designs Custom Resistors for NASA’s 2020 Mission to Jupiter

Posted by doEEEt Media Group
On January 26, 2020
0

It is necessary to ensure that any EEE component withstands the extreme environmental conditions in outer space

Microsectioning - Short Technical Notes, PASSIVES, PHYSICAL, MECHANICAL & ASSEMBLY, TESTING

Assembled Resistors. Incomplete wetting

Posted by Mari Carmen López
On January 15, 2020
0

Resistors assembled to a PCB have been submitted to the ECSS verification program. Metallographic analysis allows us to check the status of such devices after performing the environmental tests (Vibration & Thermal Cycling).

ABC of CLR, EEE Components, PASSIVES

Potentiometers type 2

Posted by doEEEt Media Group
On January 8, 2020
0

Power potentiometers are as a rule wirewound. They are wound on a ceramic body and lack, due to heat dissipation concerns, encapsulation in casings or housings.

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