IR emitters deliver higher radiant intensity

Vishay Intertechnology, Inc. has expanded its optoelectronics portfolio with the introduction of six new 850-nm and 940-nm high power infrared (IR) emitters. The Vishay Semiconductors VSMA10x devices, built on the company’s SurfLight surface emitter chip technology, are designed for high drive currents up to 1.5 A DC and 5 A pulsed in industrial and consumer applications.

(Source: Vishay Intertechnology)

Featuring a double-stack chip, the IR emitters provide high radiant intensity up to 6,000 mW/sr at a 5 A pulse current in 3.4 × 3.4-mm surface-mount packages. The radiant intensity is said to be 30% higher than previous generation solutions and 10% higher than the closest competitive device, while delivering a 20% smaller footprint, compared to competing and previous generation devices.

Vishay said these values enable greater illumination distance and minimize the number of components required. Target applications include eye tracking in gaming, as well as night vision for CCTV, machine vision, toll systems, number plate recognition, and general IR illumination

The family of IR emitters offer three angles of half intensity — ± 28°, ± 40°, and ± 60° — an increased ambient temperature range from -40 °C to 125 °C, and low thermal resistance from 6 K/W to 9 K/W. The devices provide high ESD immunity up to 5 kV in accordance with ANSI/ESDA/ JEDEC JS-001, a floor life of 168 hours, and a moisture sensitivity level of 3 in accordance with J-STD-020E. They are also RoHS-compliant, halogen-free, and Vishay Green.

Part numbers include the VSMA1085250, VSMA1085400, VSMA1085600, VSMA1094250, VSMA1094400, and VSMA1094600.

Click for a larger image. (Source: Vishay Intertechnology)

Samples and production volume is available with lead times of eight to 12 weeks. Pricing for U.S. delivery starts at $1.50 each in quantities of 10,000.