Radiation Characterisation for New Tantalum Polymer Capacitors

Posted by doEEEt Media Group
On June 14, 2019
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Polymer tantalum capacitor technology was developed in response to demands from the market to lower the ESR of tantalum capacitors while preserving their small case size and high reliability. The technology is promising in several aspects. The higher quality interface between the dielectric and the polymer cathode increases the breakdown voltage of the device, as well as reducing its DC leakage current, even at extreme radiation exposure conditions.

Shipment Hold Notification, Vishay Military type RNR55 resistors, MIL-PRF-55182

Posted by doEEEt Media Group
On June 14, 2019
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Shipment Hold Notification- Mil-PRF-55182, VISHAY Style HDN55, Military type RNR55, Columbus, Nebraska Product

AVX CDR11 to 14 with BG Dielectric no longer offered

Posted by José Francisco Largaespada
On June 14, 2019
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AVX will cease to manufacture MIL-PRF-55681/4 styles CDR11, CDR12, CDR13, and CDR14 with the BG dielectric. (90 ± 20ppm). AVX will continue to support same styles with BP dielectric (0±30ppm).

Electromagnetic Radiation of Power Inductors

Posted by doEEEt Media Group
On June 13, 2019
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Electromagnetic (EM) radiation from inductors in DC/DC converters is no triviality — especially when considering the type and proximity of surrounding components and their susceptibility to magnetic coupling. In this post, we will discuss EM radiation as it pertains to unshielded, semi-shielded, and shielded inductors. We will also cover how EM radiation changes according to different influences.

Assembled Resistors. Incomplete wetting

Posted by Mari Carmen López
On June 12, 2019
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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).

What is a Conical Inductor?

Posted by doEEEt Media Group
On June 12, 2019
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Off-the-shelf “flying lead” and surface mount broadband conical inductors, Figure 1 and Figure 2, are a special type of broadband RF choke that are used to filter radio frequency (RF) and microwave frequency interference from electronic circuits. At high frequency, the RF choke becomes a high impedance element used to isolate noise or DC from desired signals.

Pulse Transformers and More Reliable Wired LANs

Posted by doEEEt Media Group
On June 12, 2019
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Over the past decade, innovations in technology have helped wireless connections become more prevalent and more reliable, allowing for shared connections across devices and across greater distances. Wireless definitely has its place. However, wired LANs have many benefits that are critical to the design of most networks. They include speed, less electromagnetic interference (EMI), better security, more stability, and greater reliability. With new technological advances, the advantages of wired LANs are exponentially increasing.

NTC Thermistors for Inrush Current Limiting

Posted by doEEEt Media Group
On June 12, 2019
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NTC thermistors are temperature-dependent resistors that employ special semiconductor ceramics with a negative temperature coefficient (NTC). They have high resistance at room temperature, and when they are energized, they generate heat by themselves and the resistance falls as their temperature rises.

DC-DC Converters

Posted by Tomáš Zedníček
On June 7, 2019
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Today, one can hardly find a consumer, industrial or high-reliability electronic device that does not make use of a voltage regulator. Designers basically use two types of regulators, linear LDO (low dropout) and step-down switch-mode DC/DC regulators to convert the voltage to lower level. Switching DC/DC regulators are preferred for applications that require a greater difference between input and output voltages because they are more efficient in such operating conditions.

Capacitor Selection for Coupling and Decoupling Applications

Posted by doEEEt Media Group
On June 7, 2019
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