Electronics Protection - November/December 2013 - (Page 20)

Thermal Directable Inverted Blowers Deliver High Volume Air Flow Compact inverted blowers from AMETEK Rotron provide concentrated high volume airflow for cooling applications in ruggedized computers, avionics and communications. The Trimline blowers have motors located inside the squirrel cage wheel for reduced size and inherent motor cooling. Their small size allows easy mounting in any attitude to direct the flow where it is required. In higher impedance systems, inverted blower technology can deliver twice the airflow of axial fans of the same size, with less generated noise. It also requires significantly less clear space in front and back so it can be mounted in closer proximity to other components. The Trimline's concentrated air streams deliver effective cooling in high impedance applications typical of miniaturized enclosures. The blowers are effective in cooling fins on external heat sinks. Due to the Trimline's low noise signature, they can also be used as retrofit crew member comfort blowers in military vehicles where air conditioning is not practical. With a form factor measuring 12.06 by 12.06 by 4.06 cm, the blowers fit into slim chassis enclosures. For even tighter situations, half-Trimline blowers measuring 9.9 by 12.06 by 4.06 cm are available. Speeds range from 2,700 to 6,300 RPM; airflows range from 21 to 45 CFM. Agilent Technologies Introduces Extreme Temperature Probing Solution for Oscilloscopes Agilent Technologies, Inc. has introduced a comprehensive extremetemperature probing solution for oscilloscopes. The N2797A single-ended active probe is a highinput-impedance active probe with rugged probe tips for testing integrated circuits and devices in environmental chambers. Many engineers need to verify their products' performance over a wide range of operating temperatures. Until now, testing in extreme temperature ranges required engineers to use probes outside their specified operating temperatures, which can damage probes. Whether active or passive, most probes have a specified operating temperature range from 0°C to 50°C. However, Agilent's N2797A can be operated, without damage, over a wider range, from -40°C to 85°C. Engineers can operate the probe head and the supplied probing accessories inside a temperature chamber, with the probe pod and the oscilloscope located outside the temperature chamber. For extended testing with even more extreme temperature ranges, Agilent offers the N5450B InfiniiMax extreme-temperature extension cable with the InfiniiMax series differential probing system. When used with the Agilent N5381A differential solder-in probe head, the extension cable provides engineers with the widest temperature range, from -55°C to 150°C, which is the maximum range specified for testing automotive electronics. When accurate and repeatable current measurements inside the chamber are critical over wide temperature ranges, the twochannel N2820A and one-channel N2821A high-sensitivity current 20 probes are the best choices for precision current measurement applications. When the user-defined head that comes with the N2820A/21A is paired with these current probes, they provide high sensitivity current measurements, going all the way down to 50 uA with a maximum current range of 5 A, operating from -55°C to 150°C. Electrolube Launch UV Cure Conformal Coating Electrolube has launched a UV cure conformal coating (UVCL). The UVCL coating provides a high level of protection for electronic circuitry at high speeds of application and cures within seconds upon exposure to UV light. The low viscosity, single component conformal coating is a choice for high throughput production processes, reducing the time taken to complete the conformal coating step. UVCL demonstrates ease and speed of application in an automated process, achieving high-speed surface cure when exposed to the correct source of UV light, all without the use of volatile organic compounds (VOCs). UVCL is the next generation of VOC-free coating with added storage stability and a long shelf life. The low viscosity coating allows the application of relatively thin films without the need for dilution and provides flexibility, moisture and chemical resistance at minimal cost. The non-flammable coating fluoresces under UV light for ease of inspection and offers electrical properties with a wide operating temperature range. Gap Filler Pad Exhibits Thermal Resistance of 0.21°Cin2/W Fujipoly's Sarcon GR25A0H2-30GY is a 0.3 mm thick, low thermal resistance interface material with a low-tac surface on both sides. This special treatment dramatically reduces material tearing and damage during assembly and rework operations. The formulation improves cooling performance by filling unwanted air gaps between board components and processors thereby increasing surface contact with a heatsink. Sarcon GR25A-0H2-30GY transfers heat with a thermal conductivity of 2.8 W/m°K per ASTM D2326 and a thermal resistance of 0.21°Cin2/W at 14.5 PSI (1.33°Ccm2/W at 100 Kpa). This flame retardant TIM is available in sheets up to 300 mm by 200 mm and can be die-cut or trimmed to fit your exact application specifications. Microchip Introduces Temp Sensor Family with 1.8 V SMBus and I2C Interface Microchip Technology, Inc. has released a six-member family of temperature sensor ICs called the EMC118X. This family of temp sensors with 1.8 V SMBus and I2C communications, which is required for interfacing to the latest generation of smartphone, tablet and PC chipsets. Additionally, this integrated low-voltage I/O support reduces cost and board space because it is accomplished without an external voltage level shifter. These are also the first temp sensors to use an advanced sample-frequency-hopping filter, which enables temperaturemonitoring traces of up to 8 inches in noisy environments with November/December 2013 www.ElectronicsProtectionMagazine.com http://www.ElectronicsProtectionMagazine.com

Table of Contents for the Digital Edition of Electronics Protection - November/December 2013

New Features Make F-Series TeraFrame Gen 3 One of CPI’s Most Advanced Cabinets
Silicones for High Reliability and Yield in Electronic Applications
Surge and Transient Protection for Telephone, CATV & Satellite Services
Thermal Management of LEDs: Looking Beyond Thermal Conductivity Values
Understanding NEMA Ratings for Electrical Enclosures
Silent Air Cooling: A New Approach to Thermal Management
VadaTech Releases Rugged Conduction-Cooled MicroTCA Ecosystem
Directable Inverted Blowers Deliver High Volume Air Flow
Cima NanoTech Launches Ultra Low Resistance Sante EMI Shielding Film
Littelfuse Introduces Surge-Tolerant Fuses
ProTek Devices’ TVS Array Provides Circuit Protection in Computing Applications
Reell’s PolyTorq Technology Expands Capabilities For Hinge and Torque Insert Applications
Industry News

Electronics Protection - November/December 2013