Circuit & System Protection


Latest Articles

Mechanical design tips for EMI shielding
23 March 2005, Sivan Electronic Supplies
Nowadays every company is involved with CE/EMI demands. The use of electronics increases as well as the frequencies. Therefore radiation and immunity has to be taken into account in an early stage during ...

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Resettable fuses for automotive protection
23 March 2005, Electrocomp
Bourns' MF-SMHT Series of high temperature polymer PTC resettable fuses is specifically engineered for automotive applications. Its characteristics make it ideal for under the hood and wheel arch applications. ...

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EMI filters for 48 V power input
23 March 2005, Electronic Industry Supplies
The 48 V d.c. power input in telecommunications applications is the main target of Spectrum's newly developed series of EMI-filters. Complementing the company's existing range of standard AC and DC filters, ...

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Shielded enclosures with RF absorbers for electronics
9 March 2005
FerriShield offers PCB shielded enclosures that have RF absorbing material. The company has available three standard size EMC PCB enclosures with seven frequency-specific absorber formulations as well ...

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EMC shielding enclosure with ferrite body and RF absorber membrane
9 March 2005
FerriShield's ferrite-encased PCB shields provide the highest level of RF attenuation known to date, according to the company. Two compact board-level packages offer 366 and 347 Ω of impedance at 700 ...

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Harmonic attenuator module for Vicor power conversion systems
9 March 2005
Vicor's new high-boost VI-HAM (harmonic attenuator module) is a universal AC input, PFC front-end module that has been optimised for use with Vicor's V375 series of DC-DC converters. A single high-boost ...

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Active EMI filters for DC-DC converters
23 February 2005
Vicor subsdiary, Picor, has introduced three new additions to the QPI family of active EMI filters. The new products, QPI-3, QPI-5 and QPI-6, support 24 and 48 V DC-DC converter applications with higher ...

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Single choke coil does the job of three components
23 February 2005
With Murata's new choke coil, conducted and radiated disturbance can be suppressed with use of only one component instead of three. Murata's hybrid choke coil (HCC) is both a common mode and a differential ...

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Easy-to-mount capacitor discharge resistor module
23 February 2005, Electrocomp
Epcos has optimised its discharge resistor modules based on hybrid ceramics to simplify mounting of discharge resistors on PFC capacitors and enhance reliability. The new module is no longer supplied ...

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Flexible absorber material for RF
23 February 2005
FerriShield's EMC and microwave flexible absorber material come in six variations for frequencies from 100-800 MHz as well as an extra wideband formulation that provides superior performance from 40 MHz ...

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Surface mount fuse-link advances circuit protection
9 February 2005, Retron
The latest addition to Schurter's range of RoHS compliant products is the UMT 250 fuse-link, claimed to offer the highest protection currently available in primary protection SM fuses. It touts a breaking ...

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EMC filters
26 January 2005, Electrocomp
Epcos' EMC filters of series R105 now bear all major international seals of approval, such as UL1283, CSA 22.2 No. 8 1986 (cUL) and EN 133200. The filters are available for rated currents from 8 to 150 ...

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ESD protection diodes for portable and battery powered applications
17 November 2004
Royal Philips Electronics has introduced a series of single-line, bi-directional electro-static discharge (ESD) protection diodes designed to protect devices such as MP3 players and mobile phones from ...

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T1/E1 protection module
3 November 2004, ASIC Design Services, Integrated Solutions, Products & Solutions
Halo's new SIP Tele-Pro series of high density T1/E1 modules have been designed to provide the network engineer a complete UL/EN60950 recognised solution that meets the requirements of GR1089 for lightning ...

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Miniaturised quad protection
3 November 2004, Electrocomp, Access Control & Identity Management
As a result of progressive miniaturisation of components, Epcos has been offering a multilayer varistor as a quad array with nickel barrier termination (three-layer silver/nickel/tin metallisation) in ...

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DC and AC single line feed-through filters
3 November 2004, Electronic Industry Supplies, Integrated Solutions
Spectrum Control now can offer DC and AC single line feed-through filters that have attained UL and Semko approval. These filters are current rated from 10-300 A and suitable for 0-400 Hz applications. ...

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Surge protection for higher speed LAN interfaces
3 November 2004, Phoenix Contact
The Datatrab D-LAN-CAT.5E surge voltage protector from Phoenix Contact is a surge voltage protection device designed for the interfaces of important data transfer systems such as Ethernet, Token Ring ...

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TV and satellite surge protector
3 November 2004, Phoenix Contact
To provide suitable surge voltage protection for the wide range of end devices and installation possibilities used in consumer electronics, Phoenix Contact has expanded its adapter connector and socket ...

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Precision GDT surge protector for surface mount
3 November 2004
Bourns offers a 2-electrode GDT surge protection device for surface mounting. The industry-leading quality and features of the Bourns miniature 2035 Series GDT continue in this new SM version. Compatible ...

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Smaller sizes for microwave ceramic filters
3 November 2004, Electrocomp
The GPS filters B69812N1577B302 and B69812N1577D302 from Epcos are targeted at navigation systems in cars, ships, handheld devices and mobile phones. In comparison with previous filters, the company says ...

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