Archive for May, 2009

BI Technologies Develops Thin Film Resistor Networks in Small Outline, Leadless Packages

Monday, May 18th, 2009

Networks packaged in one of the industry’s smallest PCB footprints per lead count…

LAS VEGAS, NV (May 12, 2009) – Providing design engineers with a significant amount of PC board space savings, TT electronics BI Technologies has developed a new series of thin film resistor networks. Designated the SFN Series, the networks are housed in surface mount SON (Small Outline, No Lead) packages, and are available in custom, isolated, bussed and voltage divider circuit configurations.

 “These SFN Series networks feature one of the smallest PC board footprints per lead count in the industry. Compared to traditional 3-lead SOT23 and 8-lead SOIC packages, the networks offer a 40% and 46% size reduction, respectively,” said Mike Torres, BI Technologies’ fixed film product manager. “With the small package size and variety of configurations, the networks are ideal for a myriad of applications, including electronic measurement equipment, semiconductor processing equipment, ultrasound equipment, and flight control systems.”

The thin film resistor networks are also specified for precision analog circuits such as instrumentation amplifiers, precision voltage dividers, measurement bridges, low noise circuitry, ladder networks and converter applications.

The SFN Series SON package style is offered in a 6-pad, 2mm square outline with a pad pitch of 0.65mm, as well as an 8-pad, 4mm square outline with a pad pitch of 0.8mm. Custom circuits are available in either package style, while voltage divider circuits are offered in the 6-pad SON package. Isolated and bussed circuit configurations are offered in the 8-pad SON package.

Standard SFN Series networks are available with two, four or 7 resistors. Nominal resistance ranges from 10ohm to 100Kohm, with absolute tolerance to +/-0.25% and ratio tolerance to +/-0.05%. TCRs are to +/-25ppm/°C and TCR tracking is to +/-5ppm/°C. BI Technologies will also produce devices outside these specifications to meet specific customer requirements.

BI Technologies’ Ferrite Cube Inductor Deployed in Computer Power Applications

Monday, May 18th, 2009

High-current, low-loss power inductor operates at frequencies to 1MHz…

LAS VEGAS, NV (May 12, 2009) — Providing design engineers with a robust, cost-effective through-hole device that requires minimal board space, TT electronics BI Technologies has extended its family of high-current, low-loss power inductors.  The new HM58 Series inductor features a heavy-gauge coil wire and exhibits a saturation current rating up to 60A at frequencies to 1MHz, making it ideal for motherboard and computer power applications.

 “We’ve seen an increased demand for an inductor that delivers high-performance operating specifications but requires minimal PC board space,” said Donna Schaefer, application engineering manager for BI Technologies.  “With its through-hole configuration and three open sides, the inductor requires a footprint of only 11mm x 11.5mm. As such, we are seeing the inductor used in a number of voltage regulator applications where board space is constrained.

 The RoHS-compliant HM58 Series high current cube inductor features inductance values from 0.36mH to 1.30mH, depending on device. DCR ratings are from 0.65mohm to 1.05mohm, with tolerances to +/-5%.  Operating temperature range is from -40°C to +125°C. The inductor is available in standard tray packaging. BI Technologies will also produce devices outside these specifications to meet customer requirements.

Power Integrations Introduces an Efficiency Compliance Calculator

Wednesday, May 13th, 2009

Are you tired of having to consult multiple sources when checking the efficiency compliance of your EPS designs? If so, check out PI’s new External Power Supply Efficiency Compliance Calculator. Simply enter your data into the calculator and see if it complies with current world-wide energy efficiency regulations.