209 SERIES

      The 209 SERIES is a kind ofFILAMENT REPLACEMENT LEDs - T5.5SB. Some  design considerations are as follows. First, all devices feature water clear high intensity LEDs as standard. The single chip LED devices have been modified by the removal of the domed portion of the encapsulation (flat-topped) to provide even illumination of switches and annunciators. Second,  filament Replacement LEDs have been specifically designed to meet the primary objective of providing improved reliability.As this product range is suitable for both new-build and retro-fit, (sometimes in very old systems), a wide range of illuminated push button switches and lamp holders can be encountered. Third, build up of electro-static discharge occurs in many situations involving people moving and handling products. The range of possible situations for 209 SERIES is very diverse but voltage levels as high as several thousand volts can and do arise in many individual situations. Fourth, the forward voltage/current value of an LED is dependant upon the ambient temperature of the environment in which it is operated.
      Next is some technical information about the 209series. Its Lamp Base Style is Telephone Slide Base T5.5 ,and the Maximum Power Dissipation is 500(mW).
      Here are some features of 209 SERIES . The first one is Direct replacement for T5.5 Slide Base, the second one isIdeal for industrial pushbutton switches and annunciator panels, the third one is Durable to shock and vibration, the fourth one is Fit and Forget reliability ,the last one is Warm White LEDs may be used behind coloured lens as a true replacement for a filament lamp.
      Some notes of 209 SERIES are as follows:First, Please note that this product is also available in different voltages. Contact our sales department for further details.Second, Products must be derated according to the derating information. Each derating graph refers to specific LEDs. Appropriate LED numbers shown. Third,Intensities (lv) and colour shades of white (x,y co-ordinates) may vary between LEDs within a batch. 
      For more information about the 209 series, please pay attention to our web, the web site is www.ChinaICMart.com or www.seekic.com.