Circuit & System Protection


Latest Articles

World's smallest chip common mode choke coil
21 September 2005
Murata claims its DLP0NS is the world's smallest chip common-mode choke coil for high-speed differential transmission line noise suppression. This product is smaller, thinner and lighter than the company's ...

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Block filters for single-phase applications up to 50 A
21 September 2005, Retron
Schurter has extended its filtered power entry modules with single-phase block filters. With this extension it supports customer requirements for power supplies from 0,5 A up to 50 A at 250 V and provides ...

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Global mobility - for sure: surge protection for mobile stations
24 August 2005, Phoenix Contact
Ref: z2816205m Due to their function, mobile stations are mostly arrayed in exposed locations. The third generation (3G) of mobile communication, such as UMTS or CDMA, is also therefore still at risk ...

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Alternate slot EMI/RFI shielding gaskets are stronger
24 August 2005
Tech-Etch has introduced three new EMI/RFI shielding, beryllium copper, alternate slot gaskets. Extending across the contact radius of these symmetrically profiled gaskets, the slots alternate from one ...

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Surface mount fuse link advances circuit protection
10 August 2005, Communica
An addition to Schurter's range of RoHS compliant products is the UMT 250 fuse link. According to the company, the UMT 250 offers the highest protection currently available in primary protection SM fuses, ...

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Integrated passive and active device in chip-scale
10 August 2005, Integrated Solutions, Financial (Industry)
Bourns' 2DAD-C5R device, manufactured using thin film on silicon technology, provides ESD protection for the external ports of portable electronic devices such as cellphones, modems and PDAs. The ESD ...

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0402 thermistor with enhanced response time
10 August 2005, Altron Arrow
AVX has designed NTC (negative temperature coefficient) thermistors specifically for temperature compensation and control applications in handheld and portable electronics equipment. The NB23 Series is ...

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Surface-mount EMI filters
27 July 2005, Electronic Industry Supplies
Spectrum Control offers a complete line of surface mount filter solutions for addressing EMI at the printed circuit board level. This line of surface mount inductors, low pass filters, high frequency ...

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High speed noise suppression
27 July 2005, Infrastructure, Government and Parastatal (Industry)
Picked up from internal clocks by transmission lines, and radiated by USB cables acting as transmitting antennas, the problems of radiated and conducted noise are well known. These problems are compounded ...

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EMC shielding solutions
27 July 2005, Rittal
Rittal offers a complete programme of shielding protection solutions for EMI/RFI. It offers an extensive line of standard sheet steel enclosures, special EMC-shielded enclosures, and EMC accessories. ...

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PC board heatsinks
27 July 2005, Electrocomp
For removing heat from the electronic components on a PC board, Fischer Elektronik has developed a line of heatsinks with dimensions that are suitable for current PCB formats. Heatsinks are available ...

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Small chip ferrite beads for use in high power applications
13 July 2005
Murata has introduced a range of chip ferrite beads designed to suppress noise in the powerlines of high performance digital equipment. The BLM18S series is suitable for use in high current environments. Supplied ...

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EMC filters for reliable system operation
13 July 2005, Retron
The range of MEF mains suppression filters from Murrelektronik reduce emitted interference and improve immunity from internal and external interference on mains and power-supply cables. EMC filters are ...

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New EMC filter products
13 July 2005, Electrocomp
Epcos has added the new SIFI-H series to its SIFI family. These filters are targeted at EMC applications in power supplies, medical engineering, industrial electronics, telecommunications, and data systems. This ...

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NH dual indication fuses
13 July 2005
Bussmann's dual-indication 500 V a.c. Class gG NH fuse link breaks new ground by incorporating a simple, dual indication system, easily visible from both top and centre of the fuse link, whether it is ...

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Dynamic power factor correction offers benefits
13 July 2005, Electrocomp, Information Security
Conventional power factor correction (PFC) systems consist of a power factor controller and power capacitors. They are connected to the power line via electromechanical capacitor switching contactors. ...

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Lead-free surface mount polymer PTCs
13 July 2005, Perimeter Security, Alarms & Intruder Detection, Products & Solutions
Bourns Multifuse Polymer PTC lead (Pb)-free surface mount components' (the MF-SMDF, MF-MSMF, and MFNSMF) standard metal termination finish is electroless nickel immersion gold (ENIG).    This finish ...

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Surge protection device with RFI suppression filter
13 July 2005, Phoenix Contact
Phoenix Contact's surge protection device, the SFP 1-20/120AC, combining surge protection with a protection circuit against high frequency interference. The robust housing is DIN-rail mountable and can ...

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Compact fuse terminals
13 July 2005, Phoenix Contact
The compact UT 4 HESI fuse terminal (5 x 20) from Phoenix Contact with 4 mm² screw connections features a double-bridge shaft, which is designed to fit all UT terminal blocks in line. This enables quick ...

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Gaskets for easing enclosure door EMI problems
15 June 2005
For combatting electromagnetic interference (EMI) problems where enclosure doors, cabinets and boxes are concerned, EMI shielding and thermal interface solutions provider, Laird Technologies, can supply ...

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