204-521-23-38

FILAMENT REPLACEMENT LEDs - T1¾ FEATURES 204 SERIES Direct replacement for T1¾ Bi-Pin Flat-topped for enhanced, even illumination of large lens areas PACK QUANTITY = 20 PIECES Reduces maintenance costs ‘Fit & Forget’ reliability Warm White LEDs may be used behind coloured lens as a true replacement for a filament lamp SPECIFICATIONS Ordering Information & Typical T echnical Characteristics (T a = 25°C) Mean Time Between Failure = 100,000 Hours. PART NUMBER COLOUR Luminous intensity figures refer to the unmodified discrete LED. VOLTAGE Vopr CURRENT lopr LUMINOUS lv@20mA WAVE λp OPERATING T opr STORAGE T stg LENS DC DC INTENSITY LENGTH TEMP TEMP HIGH INTENSITY 204-501-21-38 204-521-21-38 204-532-21-38 204-930-21-38 204-997-21-38 204-993-21-38 204-501-23-38 204-521-23-38 204-532-23-38 204-930-23-38 204-997-23-38 204-993-23-38 UNITS Red Yellow Green Blue Cool White Warm White Red Yellow Green Blue Cool White Warm White Water Clear Water Clear Water Clear Water Clear Water Clear Water Clear Water Clear Water Clear Water Clear Water Clear Water Clear Water Clear 12 12 12 12 12 12 24-28 24-28 24-28 24-28 24-28 24-28 Vdc 20 20 20 20 20 20 17 17 16 16 16 16 mA 11000 16000 23000 7000 14000 9200 11000 16000 23000 7000 14000 9200 mcd 643 591 527 470 *see below **see below 643 591 527 470 *see below **see below nm -40 ~ +95^ -40 ~ +95^ -40 ~ +95^ -40 ~ +95^ -40 ~ +95^ -30 ~ +85^ -40 ~ +95^ -40 ~ +95^ -40 ~ +95^ -40 ~ +95^ -40 ~ +95^ -30 ~ +85^ 0 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 -40 ~ +100 0 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes C C x y 997F-C 0.245 0.229 *Typical emission colour cool white 0.361 0.356 0.264 Please note that this product is also available in different voltages. Contact our sales department for further details. 0.385 0.351 0.220 ^ = Products must be derated according to the derating information. Each derating graph refers to specific LEDs. Appropriate LED numbers shown. - Refer to page 3. 993 x **Typical emission colour warm white 0.426 0.439 0.497 0.477 y 0.400 0.431 0.446 0.413 Intensities (lv) and colour shades of white (x,y co-ordinates) may vary between LEDs within a batch. How to Order: website: www.marl.co.uk • email: sales@marl.co.uk • • T elephone +44 (0)1229 582430 • Fax: +44 (0)1229 585155 relating to either products or service. for products or service. The information contained in this datasheet does not constitute part of any order or contract and should not be regarded as a representation Marl International reserve the right to alter without notice the specification or any conditions of supply © MARL INTERNATIONAL LTD 2007 : DS 092/06 Issue 2 SAMPLES AVAILABLE Page 1 of 3 204 Series Dimensions in mm (Typical) Not to scale Colour dot on product sleeve denotes LED colour. Green dot on base indicates anode +ve termination. TECHNICAL INFORMATION Lamp Base Style Bi-Pin T1¾ Series 204 Metric Equivalent (mm) 5/6 Maximum Power Dissipation (mW) 500 DESIGN CONSIDERATIONS Single-Chip LEDs All devices feature water clear high intensity LEDs as standard. The single chip LED devices have been modified by the removal of the domed please contact the sales department for details. 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 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 can be encountered. Due to subjectivity, evaluation of the LED type is recommended, (samples of all standard models are available). Care should portion of the encapsulation (flat-topped) to provide even illumination of switches and annunciators. Non flat topped versions are also available, 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 and despatch. We recommend all users of LED based products follow the guidelines of BS 100015. Power de-rating wavelength spectrum have changed this. Marl has an approved system of ESD control from goods in, through production and into final packing care must be taken to operate the LED at the correct voltage/current values, depending upon the ambient temperature. Consequently, a termed ‘de-rating’. The forward voltage/current value of an LED is dependant upon the ambient temperature of the environment in which it is operated. Therefore, recommendation regarding operating voltages and currents is given in order to address these temperature effects. This recommendation is It is usual for forward voltages and currents to be specified for ambient temperature of 25°C. However, because the values of these qualities vary with temperature, Marl should be contacted if the device is to be operated at a temperature significantly higher than 25°C. Marl accept no liability for any product that is operated higher than the stated voltage. Note: All luminous intensity figures refer to the unmodified discrete LED. How to Order: website: www.marl.co.uk • email: sales@marl.co.uk • • T elephone +44 (0)1229 582430 • Fax: +44 (0)1229 585155 relating to either products or service. for products or service. The information contained in this datasheet does not constitute part of any order or contract and should not be regarded as a representation Marl International reserve the right to alter without notice the specification or any conditions of supply Approved Manufacturer BS EN ISO 9001:2000 © MARL INTERNATIONAL LTD 2007 : DS 092/06 Issue 2 SAMPLES AVAILABLE Page 2 of 3 DERATING INFORMATION 501 & 521 532, 930 & 997 993 How to Order: website: www.marl.co.uk • email: sales@marl.co.uk • • T elephone +44 (0)1229 582430 • Fax: +44 (0)1229 585155 relating to either products or service. for products or service. The information contained in this datasheet does not constitute part of any order or contract and should not be regarded as a representation Marl International reserve the right to alter without notice the specification or any conditions of supply Approved Manufacturer BS EN ISO 9001:2000 © MARL INTERNATIONAL LTD 2007 : DS 092/06 Issue 2 SAMPLES AVAILABLE Page 3 of 3