Semiconductors in TO 220 and TO 218 enclosure designs are usually secured to the selected heatsink by means of a screwed connection for the requisite cooling, which results in spot contact pressure in the area of the securing flap. On the other hand, the contact pressure on the underside of the semiconductor, ie, where the primary heat is emitted, is lower. This in turn gives rise to an increased heat transmission resistance from the semiconductor to the heatsink in this area – creating so-called ‘hot spots’.
The new contact pressure heatsinks in Alutronic’s AK 350 and AK 352 ranges are designed in such a way that when screw-connected, they distribute the contact pressure to the main heatsink across the entire surface of the underside of the semiconductor. Dimensional tolerances on the part of the semiconductor enclosure are largely offset by the design of the heatsinks. In addition to optimising the contact pressure and reducing the contact resistance, these contact pressure heatsinks also provide additional cooling of the components across the top where the heatsinks can also be mounted as individual heatsinks. The main application is however in areas where safe assembly and optimised heat transmission from the semiconductor to the heatsink are required. The new heatsinks in the AK 350 and AK 352 ranges are designed for individual assembly as standard. Special dimensions are also available on request, eg, for multiple assembly.
Clearing the Static: Understanding the significance of ESD audits Actum Electronics
Circuit & System Protection
An ESD (Electrostatic Discharge) audit is the first step in establishing an ESD plan, and it is important to include all areas where ESD-sensitive components are being handled.
Read more...Microchip introduces ECC608 TrustMANAGER Altron Arrow
Circuit & System Protection
To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.
Read more...Varistors for automotive applications Future Electronics
Circuit & System Protection
TDK Corporation has announced the addition of two new varistors to its AVRH series for automotive applications where both are characterised by the high electrostatic discharge-withstanding voltage demanded to ensure the safe operation of safety-critical automotive functions.
Read more...Single-phase EMC filters RS South Africa
Circuit & System Protection
TDK Corporation has expanded its portfolio of single-phase EMC filters for AC and DC applications up to 250 V and rated currents from 6 to 30 A.
Read more...Clearing the Static: ESD protective packaging Actum Group
Circuit & System Protection
The primary objective of ESD protective packaging is to prevent ESD incidents within the packaging and facilitate the dissipation of charges from the outer surface.
Read more...New NeoMesh protocol stack version CST Electronics
Circuit & System Protection
NeoCortec has released an updated NeoMesh protocol stack version 1.6 firmware for its NC2400 and NC1000 module series, which now supports the new Sensirion SHT4xA temperature and humidity sensor series.
Read more...NewFeed feeder protection relay NewElec Pretoria
Circuit & System Protection
The NewFeed Feeder Protection Relay has been designed to protect the connection between solar farms and conventional power grids in both low voltage (LV) and medium voltage (MV) distribution settings.