Overvoltages are the greatest threat to sensitive electronic circuitry in telecom and datacom equipment. They can be caused by atmospheric discharges (lightning), inductive coupling from power lines, direct contact between telecom and power lines, or electrostatic discharges. Surge arresters from Epcos are available that can provide superior protection against such overvoltages.
New transmission technologies such as xDSL call for improved protection of telecom installations. Here, the EPCOS surge arresters offer major advantages such as high surge current discharge capacity (2,5 to 40 kA), low pulse breakdown voltage (less than 450 V), extremely low capacitance (about 1 pF) and high insulation resistance (more than 1 GOhm) at the same time.
Current market trends point to a growing demand for surge arresters that can be automatically processed and soldered straight onto PC boards. Epcos therefore developed new surge arresters as surface mount devices (SMDs) to replace conventional components with bent terminal wires. Their square electrodes mean that they can be precisely positioned on the solder pads. These new SMD surge arresters offer significant reduction in board space requirements, easier handling for automatic placement, a more rugged mechanical design and improved solderability. As well as these technical advantages, cost savings are a key argument for switching from manual to automatic placement.
Ideal for xDSL systems, thanks to their low capacitance, the SMD surge arresters provide optimum protection for data transmission at high bit rates and frequencies with negligible signal attenuation. To match applications and customer requirements, the SMD surge arresters are available with two or three electrodes and for various voltages and duty classes (surge current discharge capacity):
The new SMD voltage arresters will mainly be found in electronic telecommunication equipment such as xDSL splitters and modems, MDF connectors, CATV amplifiers, mobile radio basestations and antenna products, analog modems, ISDN cards and adapters, network terminations (NTBAs), PBXs and fax machines.
New 3dB hybrid couplers Electrocomp
Telecoms, Datacoms, Wireless, IoT
Designed to facilitate the continued evolution of high-frequency wireless systems in various market segments, the new DB0402 3dB 90° hybrid couplers provide repeatable high-frequency performance compatible with automated assembly.
Read more...Robust series of vertical-mating battery connectors Electrocomp
Interconnection
KYOCERA AVX has further expanded its industry-leading selection of standard battery connectors with the introduction of the new 9155-900 Series 2,5 mm-pitch vertical-mate battery connectors.
Read more...Why wait to automate NewElec Pretoria
Circuit & System Protection
NewElec’s initiative helps you gain operational visibility via HMI or PLC by retrofitting intelligent motor protection relays without replacing MCCs or rewiring the plant.
Read more...Low-profile tantalum chip capacitors Electrocomp
Passive Components
These general-purpose tantalum capacitors from Kyocera AVX are available in multiple case sizes with low profile options.
Read more...Compact high-performance antennas Electrocomp
Telecoms, Datacoms, Wireless, IoT
KYOCERA AVX offers a variety of extremely compact and high-performance internal, on-board, multiprotocol 2,4 GHz antennas ideal for use in SiP applications.
Read more...Track with precision Electrocomp
Telecoms, Datacoms, Wireless, IoT
KYOCERA AVX provides innovative antennas for cellular, LTE-M, NB-IoT, LoRa, GNSS, BLE, UWB, Wi-Fi, and future Satellite IoT.
Read more...RGBIR sensor with I2C interface Electrocomp
Opto-Electronics
Available in a miniature opaque 2,67 x 2,45 mm package, Vishay’s VEML6046X00 includes high-sensitivity photodiodes, a low noise amplifier, and a 16-bit analogue to digital converter.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version