ST-309

The ST-309 is designed as one kind of high sensitivity silicon phototransistor that mounted in a low profile package which is both compact and easy to mount. Features of the ST-23G are:(1)side-viwering plastic package;(2)huilt-in 2ch phototransistors. And this device can be used in optical mouses and encoders applications.

The absolute maximum ratings of the ST-309 can be summarized as:(1)C-E voltage: 30 V;(2)E-C voltage: 4 V;(3)collector current: 30 mA;(4)collector power dissipation: - mW;(5)storage temperature: -25 to +85 ;(6)storage temperature: -30 to +100 ;(7)soldering temperature: 260 .

And the electrical characteristics of this device ST-309 can be concluded into several points:(1)collector dark current: 0.5 uA;(2)light current: 40 to 115 uA;(3)light current ratio: 0.8 to 1.2;(4)switching speeds rise time: 8 us;(5)switching speeds: 9 us;(6)spectral sensitivity: 400 to 1100 nm;(7)peak wavelength: 800 nm;(8)half angle: +/- 60. If you want to know more information about it, please download the datasheet in www.seekic.com or www.chinaicmart.com .