Electronica Showcases Latest Power Products
Nov 22, 2006 10:26 AM
by David Morrison, Editor, Power Electronics Technology
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“The chimney-shaped tapered venturi is attached to the ceramic substrate and convection forces hot air up the “neck” of the chimney and away from the resistor face of the component,” says Jim Rieley, Sales Director for BI Technologies’ SMT Division. “The power resistor utilizes all three methods of heat dissipation, including conduction through the heat sink tab, radiation from the resistor surface, and convection through the venturi element.”
Meanwhile, the company’s IRC Wire and Film Technologies Division (www.irctt.com) announced a family of power MELF resistors with ratings up to 2 W for use in harsh environments. Consisting of the CHP, SMC and HSF series resistors, the devices in the power MELF family all use IRC’s metal glaze resistive element on ceramic substrates.
According to David Winkler, product manager for IRC’s Wire and Film Technologies Division, the resistors in the power MELF family provide excellent thermal compliance as well as a variety of surge capabilities. “The rugged CHP and SMC Series resistors are rated up to 2 W and provide maximum thermal compliance, while the HSF Series resistors offer as much as three times the surge rating of standard CHP resistors, which equates to up to 10 times the surge rating of similar-sized flat thick-film chip resistors,” said Winkler. “The range of capabilities allows customers to select the best device to provide stable performance in harsh environment applications.”
The IRC Wire and Film Technologies Division also introduced a wider version of their open-air current sense resistor with a higher power rating than conventional metal element resistive devices. Specified for automotive applications, the OARS-XP series resistor offers exceptional TCR ratings and superior thermal compliance. The OARS-XP Series resistor is being specified for applications involving window lift motors, fuel pump systems, seat belt pretensioners, and pulse width modulator feedback.
Table. Pricing and Availability
| Product | Unit Pricing* |
Availability |
Enpirion’s EN533x and EN536x synchronous buck converters |
EN533x, $2.94 and EN536x, $4.36 |
Now |
Advanced Analogic Technologies’ AAT2550 portable power management IC |
AAT2550, $2.19 each |
AAT2550, now |
Advanced Analogic Technologies’ AAT2830/31 Total Display Solution for handsets and other portable systems |
$1.96 |
Sampling in December 2006 |
Avago Technologies’ three families of solid state relays (SSRs) |
ASSR-1410/1420 begins at $1.48 (SO-4) and $2.49 (DIP-8); ASSR-4110/4120 begins at $1.20 (SO-4) and $2.31 (DIP-8); ASSR-1510/1511/1520 begins at $2.41 (SO-4), $2.22 (DIP-6) and $4.44 (DIP-8); all in quantities of 10,000. |
Contact the vendor |
TT electronics BI Technologies SMT Division’s BHP75 Series 75-W resistor |
$1.80 each typical in medium volumes. |
Samples are available immediately. Production quantity lead time is from stock to 6 weeks. |
TT electronics IRC Wire and Film Technologies Division’s power MELF resistors |
Approximately $0.18 typical in quantities of 10,000. |
Available now. Lead-time is from stock to 4 to 6 weeks. |
TT electronics IRC Wire and Film Technologies Division’s OARS-XP series current sense resistor |
$0.40 typical in 1,500 piece per reel quantities. |
Available now. Lead time is 14 weeks. |
*In quantities of 1000, unless otherwise stated
