Circuit & System Protection


Latest Articles

Auto re-set over-current protection resistors
29 November 2006
Murata's new thermistor offers an internal resistance of only 0,20 Ω; allowing non-operating current flows up to 500 mA at 60°C in an 0805 format (PRG210R2). The PRG18/21 family of posistors (positive ...

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Two-line EMC filters are UL/cUL approved
15 November 2006, Electrocomp
Epcos' SIFI-G and SIFI-H two-line filters enhance the company's successful SIFI-A to E series. The new devices with smaller dimensions are designed for currents of up to 36 A and a climatic category of ...

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Electronic trip unit for industrial motor circuit protection
15 November 2006, Electrocomp, CST Electronics
Teridian's 71M6403 Electronic Trip Unit device is claimed to be the industry's first merchant system-on-chip (SOC) for industrial motor circuit protection and circuit breaker applications. The 71M6403 ...

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Protect your equipment from voltage surges and electrical transients
1 November 2006
Today’s data equipment has become extremely vulnerable to a phenomenon known as voltage surges and electrical transients. A single IC package can contain over 100 000 memory bits and more than 5000 logic ...

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Miniscule choke coils for 'small' products
1 November 2006
Small products will benefit from Murata’s 0504 size common mode choke coils. Developed especially for use in really small devices, the DLM11G series suppresses both common and differential mode noise. ...

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Chip-type EMI/ESD filter suppresses up to 8 kV
1 November 2006, CST Electronics
Panasonic's chip-type EMI/ESD filters reduce electromagnetic interference (EMI) as well as suppresses electrostatic discharge of the signal lines of mobile phones, PCs, AV equipment, etc. The chip-type ...

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ESD suppressors have very low capacitance values
1 November 2006, CST Electronics
Panasonic's EZAEG series is a line of ESD suppressors suitable for suppressing ESD noise in a high-speed signal line, including HDMI (high-definition multimedia interface). As data lines of digital ...

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ESD protection with ultra-low capacitance for high bandwidth applications
1 November 2006, Altron Arrow
The next generation of computer and consumer products will use data serialisation at much higher transmissions speeds. Protection against electrostatic discharge (ESD) is vital for such products. Protection ...

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Programmable temperature monitor measures six remote channels
18 October 2006, CST Electronics, Electrocomp
Maxim's MAX6689 integrated circuit is a ±1°C accurate, 6-channel temperature sensor targeted towards next-generation, 65 nm process technology. It accurately measures its own temperature and the temperature ...

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Fused terminal block carries spare fuse
18 October 2006, Vepac Electronics
Camden Electronics' fused terminal block incorporates a spare fuse option in the fuse carrier. The design means that if the fuse blows in a circuit, technicians can immediately locate the correct replacement ...

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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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