Wirewound Resistors

Posted by doEEEt Media Group
On April 2, 2024
0

The general derating that is recommended is based on the author’s experience and analysis of relevant information within the subject field. One source of information ought to be mentioned: MIL-HDBK-979. More severe environments and important applications may justify a harder derating.

PASSIVES

Resistors Pulse Load, Power and Voltage Derating

Posted by doEEEt Media Group
On April 2, 2024
0

The article discuses key electrical resistor pulse load, power and voltage derating parameters that are important for proper selection guide and reliable operation of these passive components.

EEE Components, PASSIVES

Potentiometers, Rheostats and Trimmers

Posted by doEEEt Media Group
On July 5, 2023
0

Variable resistors include Potentiometers, Rheostats and Trimmers that will be discussed in details in the following article. Variable resistors are electromechanical components and therefore exposed not only to the weaknesses of fixed resistors but also to all the failure possibilities of electromechanics. Thus the reliability is comparatively poor. The total resistance seldom is critical and usually follows the European E3 series or 1-2-5-10 (USA).

EEE Components, PASSIVES

Highest Q factors in 0603 Size Chip Inductors in the industry

Posted by doEEEt Media Group
On June 23, 2021
0

Coilcraft’s 0603DC Series achieves the industry’s highest Q factors in 0603 sizes for super low loss in high-frequency circuits. They also feature wire-wound construction for extremely high self-resonance – up to 11.4 GHz – and achieve DCR as low as 29 mΩ, significantly lower than other inductors this size.

EEE Components, PASSIVES

High-Temperature Applications Resistor Guidelines

Posted by doEEEt Media Group
On May 5, 2021
0

Resistors have traditionally been manufactured by a variety of methods and technologies, including metal and metal-oxide film, metal foil, carbon, wirewound, and thick-film methods. Each has specific characteristics that make them more or less suitable for high-temperature applications. Resistor degradation at a high temperature can vary from a small resistance change over time to a catastrophic change in resistance, exhibited by either becoming open circuit or, in some cases, a short circuit.

EEE Components, PASSIVES

KOA Introduces High Power Ceramic Cased Resistors for Automotive Pre-Charge / Discharge

Posted by doEEEt Media Group
On March 9, 2021
0

KOA is introducing a new range of wire wound and metal oxide high power resistors in a ceramic case, dedicated to automotive pre-charge/discharge applications.

EEE Components, PASSIVES

Performance of AEC-Q200 rated power resistors

Posted by doEEEt Media Group
On December 23, 2020
0

Wirewound power resistors are usually rated with respect to continuous power, which can be insufficient for some applications where the pulse-handling capability of the resistor is also very important

EEE Components, PASSIVES

Shielded Flat-Wire High-Current Inductor for Automotive Electronics

Posted by doEEEt Media Group
On August 4, 2020
0

The characteristic features of this flat-wire coil with its MnZn core are its high rated current (IR 38-47 A) and a high saturation performance. At an RDC value of 0.6 to 1.1 Ω, its resistance is lower than that of comparable coils on the market.

ABC of CLR, EEE Components, PASSIVES

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.

ACTIVES, EEE Components, ENDURANCE, ENVIRONMENTAL & RADIATION, MANUFACTURER NOTIFICATION, TESTING

Shipment Release Notification, Vishay Military Type RER Resistors, MIL-PRF-39009

Posted by doEEEt Media Group
On November 27, 2019
0

Effective November 25, 2019 all Mil-PRF-39009, Military type RER resistors manufactured in Columbus, Nebraska and Juarez, Mexico are released for Shipment.

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