Circuit Protection
Common Mode Choke EMI Filter with Integrated ESD Protection for High-Speed Data Lines
ON Semiconductor has introduced the industry's first integrated common mode choke and electrostatic discharge protection IC for high-speed data line applications. The new NUC2401MN combines high bandwidth differential filtering, solid common mode stop band attenuation and world class ESD protection.
Analog Devices Unveils Single-package Solution for Medical-grade Data and Power Isolation
Analog Devices has expanded its broad portfolio of digital isolation products with a family of four-channel devices that meet stringent medical-grade specifications for data and power isolation in patient monitoring and other medical equipment. Each device integrates ADI's iCoupler digital isolation technology and proprietary isoPower dc-to-dc converter, providing both isolated power and isolated signal channels within a single package.
Motor Protection PTC Thermistors from ATC Semitec
ATC Semitec is now stocking a range of motor protection PTCs to compliment its existing range of re-settable thermal cut-outs. The new SPMP PTCs are available with trip temperatures ranging from 60oC to 190oC and comply with the DIN 44081 industry standard.
Avago's Extended Temperature 2.5A Gate Drive Optocouplers for Industrial Apps
Avago Technologies today announced an extended temperature 2.5 Amp gate drive optocouplers for use in a wide range of industrial applications. Avago's ACPL-312U, which is a member of the R2CouplerTM family, incorporates an alloy lead frame to offer superior heat dissipation, which allows it to operate over an extended industrial temperature range from -40 to 125 degrees C. These new extended temperature optocouplers from Avago target designers of isolated IGBT/power MOSFET gate drives, industrial inverters, AC and brushless DC motor drives, and uninterruptable power supplies. Avago is a leading supplier of analog interface components for communications, industrial and consumer applications.
Silicon Labs Introduces More Than 70 Low Power High Performance Digital Isolators
Silicon Laboratories has introduced the Si84xx ISOpro digital isolator family, said to be the industry's first to support as many as six unidirectional isolation channels capable of data rates up to 150 Mbps. Offering space-efficient packaging options, a choice of isolation ratings up to 2.5 kVRMS and the industry's most highly integrated I2C isolators, the ISOpro family delivers unsurpassed system design flexibility for use in applications such as power supplies, motor control systems, hybrid electric vehicles, industrial networking, medical and consumer products.
Devices protect against lightning strikes and spikes
The latest range of Metal Oxide Varistor (MOV) planar arrays from Syfer Technology are designed specifically to deliver protection against lightning strikes and other transient events in military, aerospace and other safety critical applications. Incorporated into the connectors on the external wall of the subsystem, the devices are key to protecting the increasing volume of sensitive electronic circuitry found in today's complex systems.
Vishay’s EMI/ESD Filter Arrays Offer Input Loss <1 db in Ultra-Compact Leadless Packages
Vishay has announced the release of two new four-and eight-channel LC EMI/ESD filter arrays with input loss of < 1 dB in ultra-compact LLP1713 and LLP3313 leadless packages. With a low profile of 0.6 mm, the new VEMI filter arrays are designed to save board space and provide EMI filtration and ESD protection for embedded cameras and LCDs in portable gaming systems, PDAs, mobile phones, and any other system designed to receive RF signals in the 800-MHz to 2400-MHz frequency range.
USB 2.0 OVP Device With Both Integrated Current Protection and High-Speed ESD Protection
ON Semiconductor has introduced the NCP362 which is said to be the industry's first overvoltage protection (OVP) device with both integrated current protection and high speed electrostatic discharge (ESD) protection for USB 2.0 applications in portable, telecom, consumer and computing systems.
KOA Introduces Universal Modular Fuse Links
The CCF-UM is a Universal Modular Fuse (UMF) with fusing characteristics according to IEC standard 60127-4, with current ratings from 400 mA up to 6.3 A. Its voltage rating is equal for AC and DC at 125 V. The circuit protector provides a high breaking capacity of up to 63 A at 125 V, and provides superior anti surge characteristics. KOA's long experience and original technology guarantees stable fusing characteristics.
ZnO Based Transient Voltage Suppressor Series from AVX
AVX has developed a Zinc Oxide based varistor series that exhibits a low leakage current of 2µA maximum. Designated the UltraGuard Series, the multilayer ceramic varistors feature non-linear, bi-directional voltage-current characteristics similar to back-to-back zener diodes and an EMC (electromagnetic compatibility) capacitor in parallel.
ZnO Based Transient Voltage Suppressor Series from AVX
AVX has developed a Zinc Oxide based varistor series that exhibits a low leakage current of 2μA maximum. Designated the UltraGuard Series, the multilayer ceramic varistors feature non-linear, bi-directional voltagecurrent characteristics similar to back-to-back zener diodes and an EMC capacitor in parallel.
Fast-Acting High-Current Chip Fuse Helps Board Space
Tyco Electronics has introduced a line of fast-acting, high-current chip fuses. Helping provide overcurrent protection on power supplies, servers, communications equipment, voltage regulator modules, and other space-constrained applications, the surface mount chip fuse offers strong arc suppression characteristics and some of the highest current ratings available in the industry-standard 1206 form factor.
NXP launches TVS diodes and claims highest surge capability in FlatPower package
NXP Semiconductors has announced a range of transient voltage suppressor (TVS) diodes housed in its new FlatPower package, SOD123W. Offering a 400 W peak pulse power rating (10/1000µs), the new diodes dissipate app. 67 W/mm2 surge per PCB area. This is more than twice the surge capability on offer in the market by TVS products in similar packages. Such high surge capabilities over smaller areas will enable engineers to save space on the PCB while delivering optimum power performance. It will also allow engineers to integrate more functions on the PCB.
Adjustable Overvoltage Protectors from Maxim
Maxim has introduced the MAX14527/MAX14528 overvoltage protectors (OVPs) designed to protect low-voltage systems against voltage faults up to 28V. These devices employ an internal low, 100milliohm (typ) Ron MOSFET to prevent damage to circuitry from overvoltage conditions. This integration eliminates the need for an external n-channel MOSFET, thus saving board space and reducing cost.
High-performance EMC/EMI filters handle up to 600A from Schaffner
Schaffner has extended its popular FN 3280 filter family for use in higher power applications. New models are now available rated at 300A, 400A and 600A. Complementing the existing series, the new filter models offer users superior EMC performance, compact dimensions and low leakage current.
Tiny Dual Hot Swap Controller for Optical Networks from Linear Technology
Linear Technology has introduced the LTC4224, a compact, low voltage Hot Swap controller for protecting boards and backplanes that use two 1V to 6V voltage supplies. Systems, including fiber optic networks, will benefit from the simplified control with independent turn-on and adjustable ramp of the two supplies. In recent years, multisource agreements like XENPAK have defined fiber optic transceiver modules that provide transmission rates up to 10Gbits/sec over distances as long as 80km. Since then, more versatile definitions like X2 or Xpak have emphasized smaller form factors for space-constrained applications.
ON Semiconductor’s New Highly-Integrated Overvoltage Protection IC
ON Semiconductor has introduced the NUS6189, a device that integrates the performance and functions of an overvoltage protection (OVP) circuit, a 30 volt (V) P-channel power MOSFET, a low VCE(sat) transistor and a low Rds(on) power MOSFET into a space-saving 3.0 mm x 4.0 mm x 0.9 mm package. The NUS6189 is designed to protect sensitive electronic circuitry from overvoltage transients and power supply faults. It is optimized for applications that utilize an external AC-DC adapter or car accessory charger such as mobile phones, PMPs and mobile internet devices.
Intertronics launches improved conformal coating
First level defence of electronic assemblies is often a post-assembly dielectric spray used to protect against moisture, bio-hazards and low level mechanical problems. Now Intertronics' sales partner DYMAX Corp have trialled their Dual-Cure 9481 Conformal Coating, showing significant improvements over previously available products.
Vishay's USB-OTG Bus Port Protection Array.
Vishay Intertechnology has released a compact ESD-protection array featuring a low capacitance and leakage current to protect USB-OTG ports against transient voltage signals. The new device provides three lines of USB ESD protection at a 5.5-V working range, and one line of VBUS protection at a 12-V working range.
New SOT Package for Semitec CRDs
As a response to a need for a simpler SMD package and higher current ratings, Semitec have now introduced the new S-series CRD range. The new SOT23 package offers constant current values from 0.1ma upto 18mA.
Surge protection devices meet statutory requirements for lightning strike protection
Finder has announced the introduction of the 7P Series of Surge Protection Devices developed specifically to comply with BS-EN62305: Protection Against Lightning, providing protection against lightning strikes, or surges caused by short circuit and contact switching in electrical systems.
Tyco Electronics Announces 24V Bus - Truck Circuit Protection
Tyco Electronics introduced today a new line of PolySwitch circuit protection devices for the automotive market. The AHEF family of devices helps provide resettable overcurrent protection for bus and truck wire harnesses utilizing 24V electrical systems.
ON Semiconductor Introduces Family of Surge Protection Devices
ON Semiconductor has announced the release of a new family of low capacitance Thyristor Surge Protection Devices (TSPD) designed to protect the next generation of high speed telecom equipment. The new devices provide a superior balance of small size combined with high surge capabilities while maintaining low capacitance and low leakage, an ideal combination for leading edge telecom products.
Tyco's Polyswitch circuit protection device
Tyco Electronics has announced the introduction of a new line of PolySwitch circuit protection devices. Designed for use in a wide variety of general electronic products -- ranging from industrial controls to battery packs -- the new PolySwitch RKEF devices are functionally equivalent to the company's existing RXEF overcurrent protection devices, but are available in a significantly smaller form factor.
ON Semiconductor Introduces Low Profile ESD Protection Arrays
ON Semiconductor has announced two new members of its low capacitance Electrostatic Discharge (ESD) protection product line - the NUP4016 and the ESD11L5.0D. These new products utilize ON Semiconductor's patented, leading-edge, integrated ESD protection platform, which enhances clamping performance while maintaining ultra-low capacitance and small die size. Offered in ultra-small packages that provide a 20 percent lower profile than previous package versions, they are ideal protection devices for portable applications such as mobile phones, MP3 players, flat panel displays and other high-speed communication applications requiring superior protection in an ultra-slim package.
New 4-Line Bus Port Protection Array from Vishay
Vishay Intertechnology has released a compact new 4-line ESD-protection array designed to provide a low capacitance with a high surge current for the protection of dual high-speed USB ports, or up to four other high-frequency signal lines, against transient voltage signals.
3.3V TVS from Solid State Supplies
Providing telecom/datacom system designers with the industry's smallest 3.3V working voltage protection device rated for 100A GR-1089 intra-building lightning surge, the new TClamp 3302N, a 3.3V, low-capacitance TVS device from Solid State Supplies delivers superior electrical performance, yet uses almost five times less board space than competitive devices
SCHURTER is Europe’s only manufacturer of an ESA/ESCC qualified fuse for use in space
SCHURTER is Switzerland's first manufacturer to be awarded the official ESA/ESCC (European Space Agency) qualifi-cation for its MGA-S SMD fuse. It complies with ESA/ESCC Generic Specification No. 4008 for use in space.
ON Semiconductor Expands ESD Protection Portfolio
ON Semiconductor has announced the expansion of its high performance off-chip ESD protection portfolio with the introduction of two best-in-class devices - the ESD7L5.0D and the NUP4212. These new products have been designed using ON Semiconductor's propriety integrated ESD protection platform, which enhances clamping performance while maintaining low capacitance and small die size.
Multilayer Varistors from AVX
AVX Corporation has expanded its AntennaGuard Series of low capacitance multilayer varistors (MLVs) to include a sub 1pf version. Designed to provide a one chip solution for protecting high speed digital interfaces, RF antenna and RF amplifier circuits against ESD events, the application specific, bi-directional transient voltage suppressor provides minimal signal distortion and low insertion loss. The low profile 0402 MLV features a fast response time to ESD and can withstand successive 1k strikes at 8kV (IEC 61000–4-2).
Double-Diode Bus Port-Protection Array from Vishay
Vishay Intertechnology has released a compact new double-diode ESD-protection array designed to protect dual high-speed USB ports or up to two other high-frequency signal lines against transient voltage signals.
New Chip Varistor Series for automotive Applications
The requirements on product reliability in the automotive sector are among the toughest in industry. Targeting these demands KOA introduced the chip Varistor series NV73DL for automotive applications. The complete AEC-Q200 test data is available now for the new Varistor series.
Murata's PRF thermistor series protects power FETs in multiple locations in POL converter applications
The latest addition to Murata's PRF family of chip ceramic thermistors (POSISTORs) is the PRF18xx5RB series, designed for overheat detection of power FETs in point of load (POL) DC-DC converters and other power supply applications. Each part has two temperature sensing points and features characteristic curves that rise very sharply. The series has a resistance of 470 at 25C, rising to 4.7K between 65 and 145C, rising further to 47k between 80 and 150C, depending on the part number. The PRF series is available in tiny 0603 packaging, and is also suitable for detecting overheat conditions in battery packs, motors, power devices and other systems.
Four-Channel, Single-Package Solution For Data And Power Isolation from Analog Devices
Analog Devices is expanding its family of digital isolation products with a series of four-channel devices that isolate both data and power. Each device integrates ADI's iCoupler digital isolation technology and ADI's proprietary isoPower dc-to-dc converter, providing both isolated power and isolated signal channels within a single package.
Digital Isolators Qualified For Automotive Systems are a first says Analog Devices
Tuning its proprietary iCoupler digital isolation technology to meet the reliability and quality needs of emerging electric-hybrid vehicles, Analog Devices, Inc. (ADI) is introducing a family of digital isolators designed to operate in today's electrically challenging automotive environment. Unlike the relatively low-voltage signals powering most in-car entertainment, safety, and power train systems, hybrid-vehicle batteries can operate at voltages in excess of 600 V, which creates a need to galvanically isolate system-critical electronics. Analog Devices' new ADuM120xW, ADuM130xW and ADuM140xW digital isolators were developed for electric-hybrid vehicle systems, such as motor drives and battery management systems. These new iCoupler products are the first digital isolators to carry an AEC-Q100 qualified –40°C to +125°C automotive temperature rating.
Lightning Protection for Load Cell Installations
Celsum Technologies Ltd have recently added to their range of strain gauge based sensors and instrumentation the IPU40 Lightning Protection System. The IPU40 is especially useful for applications with external load cells, such as vehicle weighing, web tensioning, crane loading, canitlever overload protection, lift assemblies, generic load movers, and many others.
Medium Power multilayer chip varistors
AVX Corporation has made available medium power multilayer chip varistors for transient voltage suppression and ESD protection in automotive electronics, designated the Automotive Series – VC13, 14, 15 and 20. The devices operate over -55 to 125 degrees Celsius, feature high energy ratings of up to 25 Joules in a 2220 case size, and are specified with 'Load Dump' and 'Jump Start' test requirements.
Precision Zener Diodes protect Automotive Infotainment Peripherals
Tyco Electronics has announced the addition of two new devices to its line of PolyZen polymer enhanced, precision Zener diode micro-assemblies. The new devices feature a higher hold current (2.3A) and are designed to help protect circuits in global positioning systems (GPS), smart phones, game consoles, portable media players (PMPs) and other video-based peripherals that can be charged in the car.
Medium power multilayer chip varistors
Medium power multilayer chip varistors from AVX Corporation are available for transient voltage suppression and ESD protection in telecommunications, designated the Telecom Series – VC14. The devices operate over -55 to 125 degrees Celsius, and meet interference requirements of telecoms equipment with a 2000 V rated test pulse of 10 x 700 µs duration as specified by CCITT or IEC 61000-4-5. For example a 60 Vrms varistor can reduce the interference voltage at the equipment connected from 2 kV to less than 200 V.
Low leakage transient voltage suppressors from AVX
UltraGuard Series ZnO based varistors from AVX Corporation, a leading manufacturer of advanced passive components, exhibit very low leakage current of2 µA maximum making them ideal transient protection applications where power consumption is a primary concern.
