Advertorials


New, HBB High Power Circular Connectors from Smiths Interconnect – now assembled by Aerco Ltd


Piezoceramics provide precision and reliability to medical technologies


Piezoceramic materials are commonly used in actuation and sensing applications across a variety of markets and are key to some of the leading-edge


technologies now used in the medical sector. From laboratory diagnostics and microdosing to ultrasonics and even tartar removal from teeth, medical technologies require components that are fast, reliable and energy saving.


Piezoceramics combine these characteristics, giving much higher accuracy and precision – and requiring less power – compared to traditional mechanical actuators and sensors, and are friction free, so are less susceptible to wear and tear, keeping costs down to a minimum. They do not create and are not affected by magnetic fields, and work reliably under extreme conditions, for example under cryogenic temperatures and in vacuums, making them easily adaptable to different environments for such diverse functions as non-destructive testing, therapy and imaging.


Ruggedized High Performance Circular Power Connectors for Harsh Environments. The newly re-launched HBB series of single pole high power 300A and 500A circular


connectors from Smiths Interconnect offer a compact, lightweight and ruggedized heavy duty connector designed for use in all types of harsh environment applications, including electric vehicle drive systems, rail transport and industrial applications. Now assembled by Aerco, they are available with no MOQ and two week lead-times. Available in a RoHs compliant Black Zinc Nickel finish, the durable HBB delivers a more


efficient, higher current transmission in a more compact and lighter connector compared to similar sized 38999 style products and has a superior endurance of 5000 mating cycles. Meeting design SWaP goals of high power within a small size and minimal weight interconnect solution, the 300A connector is achieved in a size 17 shell and the 500A connector in a size 21 shell, with current specified at 100°C. The robust aluminium shell is available in three different shell polarizations, fully sealed to IPx7 ingress protection and featuring 360° EMI/RFI shielding via a customer serviceable conductive ‘O’ ring, which is fitted as standard to receptacles. The HBB series is rated for surge/inrush currents of 6 kA for the 300A and 10kA for the


500A for 1 sec, making it suitable for deployment in applications like induction motors and power converters.


The connectors assemble using a straight push on procedure to fully mate with a traditional quick release bayonet un-mating mechanism, resulting in a minimal axial force required to assemble and separate with zero applied mating torque. The tactile ‘push mate’ mating provides confirmation of a full mate preventing “attached not locked” condition. The design facilitates easy mating and un-mating while near to neighbouring devices, supporting applications where higher density packing is required in space constrained environments. Safety protection includes finger protection on pin and socket contacts. With performance similar to the MIL-DTL-5015 specification for heavy-duty circular


electrical connectors for harsh environments, the connectors feature the best electrical performance and high levels of shock and vibration immunity due to the use of Smiths Interconnect’s hyperboloid contact technology. The ultra-low resistance and smooth and light wiping action of the hyperboloid contacts results in low fretting fatigue/corrosion and long contact life with minimal degradation in performance. The three dimensional symmetry of the hyperboloid contact design ensures this high degree of immunity to shock and vibration, guaranteeing electrical continuity in all circumstances. Contact resistance figures as low as 0.05mΩ keeps resistive losses and generated heat at a minimal, facilitating maximum transmission performance. The plugs and receptacles are gender reversible, available with either pin or socket contacts, and they can be ordered with optional straight or right angle back shells. Accessories include crimp lugs, heat shrink boots and additional O-rings. Standard operational temperature range is -55°C to +150°C and voltage rating at sea


level is 750vdc. Target markets include military and commercial aerospace, military and commercial


land vehicles and general industrial. Applications include electric motor drives, turret systems, military communications, radar and power management/distribution systems.


Contact at Aerco: Mark Ogden: mogden@aerco.co.uk Telephone for sales enquiries: +44 (0)1403 260206 www.aerco.co.uk


46 April 2021 Components in Electronics


Many of the medical applications for piezoceramics deal with controlled flow of liquids in micropipetting applications, taking advantage of the incredible speed and accuracy that they offer down to the micrometre level. Devices are getting more compact as we try to cram more capabilities into the same lab spaces, while the density of sampling is getting higher, creating a need for very small and fast drives for the pipetting process. At the same time, these mechanisms must produce enough force to move the pipettes vertically, but with the accuracy to aspirate or dispense the right amounts. Piezomotors are perfect for this application, as they operate with a tiny footprint as a direct linear drive and can generate high forces. A ceramic that oscillates at ultrasonic frequencies generates a controllable forward motion with uniform speed and unparalleled accuracy. Similarly, piezo


elements in micropumps control and monitor extremely small liquid or gas volumes reliably and precisely in the range of a few hundred millilitres to a few nanolitres. Different types of pumps, such as


membrane or peristaltic hose pumps, are actuated by different drive principles. The piezo elements can be adapted perfectly to each specific application environment, for example miniaturised lab-on-a-chip solutions for mobile analytical


instruments, or microdiaphragm pumps that require compact drives to create continuous and variable flow rates to even the picolitre range. Essentially, any application that needs reliable metering of minute amounts of liquids and gases – from medical uses and biotechnology to chemical analytics and process engineering – can benefit from powerful and versatile piezo technology, and the more it is applied to this sector, the more device manufacturers will realise its potential.


To find out more, go to http://bit.ly/PIC-Med-Tech


www.cieonline.co.uk


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54