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202-301-21-38 Datasheet(PDF) 2 Page - Marl International Limited |
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202-301-21-38 Datasheet(HTML) 2 Page - Marl International Limited |
2 / 2 page 202 SERIES BULB REPLACEMENT LED To order please contact us on +44 (0) 1229 582 430 F +44 (0) 1229 585 155 | E sales@marl.co.uk | www.leds.co.uk Q 05480 DSN 202 Version 2015-05-28-140300. Page 2 of 2 TECHNICAL DATA Series Lamp Base Style Metric Equivalent Max. Power Dissipation 202 T1 Sub Midget Flange SX3s 3 360 mW mm mW TECHNICAL DRAWING Weight (g): 8.3 Dimensions in mm (typical). Not to scale. Green dot on base of product signifies centre contact cathode -ve. Colour sleeve on product denotes LED colour. 3.10 1.6 10.3 DE-RATING GRAPHS 50 40 30 20 10 0 020 40 60 80 100 Ambient Temperature Ta (°C) Red / Yellow LED 50 40 30 20 10 0 020 40 60 80 100 Ambient Temperature Ta (°C) Blue / Green LED 8.5 DESIGN CONSIDERATIONS Single-Chip LEDs All devices feature water clear high intensity LEDs as standard. In devices where discrete LEDs are used, 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. Non flat topped versions are also available. Flat-topping does not apply to devices using surface- mounted device (SMD) LEDs. Product Evaluation 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. Due to subjectivity, evaluation of the LED type is recommended, (samples of all standard models are available). Care should be taken to correctly simulate operating ambient light conditions to ensure that the correct device has been selected to maximise viewing characteristics such as viewing angle, colour compatibility and on/ off contrast ratio. Electro-Static Discharge (ESD) Build up of electro-static discharge occurs in many situations involving people moving and handling products.The range of possible situations is very diverse but voltage levels as high as several thousand volts can and do arise in many individual situations. When an operator charged up to these levels handles a static sensitive device, there is a very probable likelihood that the device will be irreversibly damaged. It is essential that precautions are taken at all stages during manufacture and assembly of these products. Although LEDs were never considered to be static sensitive devices, changes in manufacturing technology and materials used to produce higher intensity products over a large range of the wavelength spectrum have changed this. Marl has an approved system of ESD control from goods in, through production and into final packing and despatch. Marl recommend all users of LED based products follow the guidelines of BS 100015. Voltage, Current and Temperature The forward voltage / current value of an LED is dependent upon the ambient temperature of the environment in which it is operated. Therefore, care must be taken to operate the LED at the correct voltage / current values, depending upon the ambient temperature. Marl should be contacted if the device is to be operated outside the temperature range specified. Marl accept no liability for any product that is operated outside the stated voltage or temperature range. marlleds marlinternationallimited company/marl-international-limited 50 40 30 20 10 0 020 40 60 80 100 Ambient Temperature Ta (°C) Warm White LED 50 40 30 20 10 0 020 40 60 80 100 Ambient Temperature Ta (°C) Cool White LED 8.5 |
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