Circuit & System Protection


Latest Articles

Transient suppressor in tinier case
6 September 2006, MB Silicon Systems
Central Semiconductor's CMF5.0A series transient voltage suppressors (TVS) are now available packaged in the SOD-123F surface mount case. The series includes reverse stand-off voltages from 5,0 V to 170 ...

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Quad UV/OV monitor for pos and neg supplies
23 August 2006
Linear Technology's LTC2914 is a precision quad input voltage monitor with four separate undervoltage (UV) and overvoltage (OV) inputs, designed for systems with multiple supplies. This IC for voltage ...

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First IEC compliant chip fuse available
26 July 2006, Retron
Schurter's USI 1206 is an IEC chip fuse series that offers quick-acting characteristic (F) according to IEC 60127-4 with rated current values up to 6,3 A. It boasts high melting I²t values, which provides ...

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Chip filters offer better suppression to 1 GHz
12 July 2006
The increasing operating speeds of ICs in DVD recorders, digital cameras and flat-screen televisions, etc, progressively demand improved EMI filtering.    To match this demand, Murata has enhanced the ...

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Noise suppression ferrite core for flat cables
12 July 2006
Murata has commercialised an easy-to-install ultra-thin type and light ferrite core, called 'Thin Type Sandwich Core.' The previous thin type ferrite core was 2,0 mm thick for the ultra thin type. This ...

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Self-protected electronic fuse limits inrush currents
12 July 2006
On Semiconductor's NIS5112 integrated high-side switch features a Sensefet, which allows for current sensing, using inexpensive chip resistors instead of expensive, low impedance current shunts. A new ...

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Surge arrestors offer ultra capacitance for xDSL applications
12 July 2006
STMicroelectronics has introduced a range of TRISILs designed to protect ADSL/VDSL modems and similar high bit-rate communications equipment on the CPE (customer premises equipment) side. Fully compatible ...

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IC protection device now uses 61% less space
12 July 2006
Until now, 0603 thermistors provided reasonably good protection of power transistors, diodes and ICs. According to passives manufacturer Murata, that protection just got better and smaller with a 61% ...

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Tubular EMI filter mitigates electrical noise
12 July 2006
The Corcom WG series EMI filter from Tyco Electronics was recently introduced to the electronics market. The WG filter is a high performance EMI filter for applications requiring a low-cost method of ...

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High-current broadband noise issues now solved
12 July 2006
It is a common problem. The ESL (equivalent series inductance) of a two-terminal capacitor prevents noise suppression across the frequency range, and using a number of capacitors in parallel costs money, ...

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Single bidirectional overvoltage protection for xDSL applications
12 July 2006, Electrocomp
Bourns' TISP4500H3BJ is a single bidirectional overvoltage protector developed for transformer-coupled xDSL applications. It can be used as a 2-wire (A-B) protector, or as one element in a 3-wire (A-B-C) ...

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Bi-directional I²C isolators said to be industry's first
12 July 2006
Analog Devices is introducing what it claims is the industry's first products to provide true bidirectional isolation for the I²C serial computer bus in industrial, networking and power supply applications. ...

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New PTC resettable fuses
12 July 2006, Electrocomp
Bourns has introduced a new 90 V Multifuse positive temperature coefficient (PTC) resettable fuse series that has been specifically designed to provide overcurrent protection in broadband cable telephony ...

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Dual pack suppression for DC motor EMI
12 July 2006, Electrocomp
Epcos has developed an innovative solution for EMI suppression in DC motors in motor vehicles. The company's new CombiSuppressor comprises a film capacitor and a multilayer ceramic varistor connected ...

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Multistage protection technology handles high datarates with ease
12 July 2006, Electrocomp
Bourns has designed its MSP Assembly to meet the challenges of tomorrow's high speed telecommunications circuits by combining the robustness of a heavy-duty gas discharge tube (GDT), with the responsiveness ...

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Gated unidirectional overvoltage and overcurrent protector
12 July 2006, Electrocomp
Bourns' TISP8250 is a telecommunications protector, designed for use in a variety of applications including: telephone handset/base station and SLIC protection in access or telecommunication centre equipment. This ...

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Small safety relay for equipment
28 June 2006
Wieland Electric has expanded its range of safety switching devices with the SNO 2004K. This safety switching device provides single-channel monitoring of safety sensors such as emergency stop buttons, ...

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Noise filters for power supply applications
31 May 2006, Sivan Electronic Supplies
Power supply maker Cosel, which entered the noise filter business last year, offers various types of noise filters. As industrial equipment is now being made lighter and smaller, with lower profiles and ...

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Multigate logic devices now have 5 kV ESD protection
31 May 2006
Royal Philips Electronics has announced that it now provides the broadest portfolio of advanced ultra-low power (AUP) logic products with 5 kV of electrostatic discharge (ESD) protection - this is twice ...

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Signal and power transfer across isolation barrier using micro-transformers: iCoupler products with isoPower technology
17 May 2006
Isolation between circuit components is typically required for safety and/or data integrity considerations. For example, isolation protects sensitive circuit components and human interface on the system ...

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