filament replacement leds features specifications direct replacement for t1 ? bi-pin flat topped led for enhanced, even illumination of large lens areas water clear lens improves equipment reliability fit & forget reliability available in other voltages pack quantity = 20 pieces 203 series bs en iso 9001:2008 approved manufacturer ? marl international limited technical documentatio n has been designed by marl international limited f or the intention of providing information, which must not be copied or released to a third party without prior written consent from marl international limited. th e information provided does not constitute part of any order or contract and should not be regarded as a r epresentation relating to either products or servic e. no responsibility can be assumed for inaccuracies or p rinting errors. marl international limited reserve the rig ht to alter with out notice the specification or any conditions of supply for product or service. ^ = products must be de-rated according to the de-r ating information. each de-rating graph refers to s pecific leds, refer to graphs on pages 2 and 3. marl international limited ds: 012/ 10 issue 4 page 1 of 4 to order to order please contact us on: t: +44 (0)1229 582 430 f: +44 (0)1229 585 155 e: sales@marl.co.uk w: www.leds.co.uk typical characteristics (ta = 25c) intensities (iv) and colour shades of white (x,y co -ordinates) may vary between leds within a batch part number colour voltage dc (vdc) vopr current dc (ma) iopr luminous intensity (mcd) iv at 20ma wave length (nm) p operating temp. (c) topr storage temp. (c) tstg de-rating graphs 203-301-21-38 red 12 20 39 660 -40 ~ +85^ -40 ~ +85 a 203-325-21-38 yellow 12 20 87 590 -30 ~ +85^ -40 ~ +120 o 203-324-21-38 green 12 20 576 525 -30 ~ +85^ -40 ~ +100 r 203-934-21-38 blue 12 20 128 470 -30 ~ +85^ -40 ~ +100 r 203-998-21-38 cool white 12 20 414 * -30 ~ +85^ -40 ~ +100 h 203-301-23-38 red 24 - 28 11 39 660 -40 ~ +85^ -40 ~ +85 a 203-325-23-38 yellow 24 - 28 11 87 590 -30 ~ +85^ -40 ~ +120 o 203-324-23-38 green 24 - 28 11 576 525 -30 ~ +85^ -40 ~ +100 r 203-934-23-38 blue 24 - 28 11 128 470 -30 ~ +85^ -40 ~ +100 r 203-998-23-38 cool white 24 - 28 11 414 * -30 ~ +85^ -40 ~ +100 h 998 * typical emission colour cool white x 0.287 0.283 0.330 0.330 y 0.295 0.305 0.360 0.339
203 series technical data marl international limited ds: 012/ 10 issue 4 page 2 of 4 bs en iso 9001:2008 approved manufacturer ? marl international limited technical documentatio n has been designed by marl international limited f or the intention of providing information, which must not be copied or released to a third party without prior written con sent from marl international limited. the information provided does not constitu te part of any order or contract and should not be regarded as a representation relating to either products or service. no responsi bility can be assumed for inaccuracies or printing errors. marl international limited reserve the rig ht to alter with out notice the specification or any conditions of supply for product or service. to order to order please contact us on: t: +44 (0)1229 582 430 f: +44 (0)1229 585 155 e: sales@marl.co.uk w: www.leds.co.uk de-rating information dimensions in mm (typical) not to scale lamp base style series metric equivalent (mm) max. power dissipation (mw) sub miniature bi-pin t1 ? 203 4 250 resistor lead signifies positive termination + ve colour dot on product denotes led colour 18 0.0 100.0 80.0 60.0 40.0 20.0 55 50 15 25 35 45 ambient temperature ta (c) forward current if (ma) derating graph a 10 20 30 40 50 6 0.0 100.0 80.0 60.0 40.0 20.0 55 50 15 25 35 45 ambient temperature ta (c) forward current if (ma) derating graph o 10 20 30 40 50 0.0 100.0 80.0 60.0 40.0 20.0 55 50 15 25 35 45 ambient temperature ta (c) forward current if (ma) derating graph h 10 20 30 40 50 8
bs en iso 9001:2008 approved manufacturer ? marl i nternational limited technical documen tation has been designed by marl international limi ted for the intention of providing information, which must not be copied or released to a third party without prior written con sent from marl international limited. the information provided does not constitu te part of any order or contract and should not be regarded as a representation relating to either products or service. no responsi bility can be assumed for inaccuracies or printing errors. marl international limited reserve the rig ht to alter with out notice the specification or any conditions of supply for product or service. marl international limited ds: 012 / 10 issue 4 page 3 of 4 to order to order please contact us on: t: +44 (0)1229 582 430 f: +44 (0)1229 585 155 e: sales@marl.co.uk w: www.leds.co.uk also available part numbers also available in the 203 series: the products listed above illustrate all of the opt ions available to order. these products may have cu stom modifications that alter their operation beyond the generic informatio n contained within this datasheet. please contact s ales for further information. * = these products do not contain integral resistor s part number colour voltage ac/dc vopr 203-000-24-50 orange 48vdc 203-301-20-25 red 5/6vdc 203-301-20-38 red 5/6vdc 203-301-22 red 24vdc 203-301-22-38 red 24vdc 203-301-23-50 red 28vdc 203-301-24-38 red 48vdc 203-301-42-38 red 15vdc 203-301-42-50 red 15vdc 203-302-23 red 28vdc 203-303-21 red 12vdc 203-303-21-38 red 12vdc 203-303-23-38 red 28vdc 203-305-20-25 red 5/6vdc 203-305-20-38 red 5/6vdc 203-305-22 red 24vdc 203-309-20-25 yellow 5/6vdc 203-309-20-38 yellow 5/6vdc 203-309-23-38 yellow 28vdc 203-309-42-38 yellow 15vdc 203-312-20-25 green 5/6vdc 203-312-20-38 green 5/6vdc 203-312-21-38 green 12vdc 203-312-23-38 green 28vdc 203-313-20-38 green 5/6vdc 203-313-22-38 green 24vdc 203-314-20-25 green 5/6vdc 203-314-22-38 green 24vdc 203-314-40-50 green 3vdc 203-317-23-38 green 28vdc 203-324-04-38 green *10ma 203-324-20 green 5/6vdc 203-324-20-25 green 5/6vdc 203-324-20-38 green 5/6vdc 203-324-22-38 green 24vdc 203-324-23 green 28vdc 203-324-23-50 green 28vdc 203-324-24-38 green 48vdc 203-324-42-38 green 15vdc 203-324-42-50 green 15vdc 203 series 203-325-20-38 yellow 5/6vdc 203-325-21-51 yellow 12vdc 203-325-22-38 yellow 24vdc 203-325-24-38 yellow 48vdc 203-325-42-38 yellow 15vdc 203-325-42-50 yellow 15vdc 203-934-04-38 blue *10ma 203-934-20-38 blue 5/6vdc 203-934-22-38 blue 24vdc 203-934-23 blue 28vdc 203-934-23-50 blue 28vdc 203-934-24-38 blue 48vdc 203-991-04-38 warm white *10ma 203-991-20-38 warm white 5/6vdc 203-991-21-38 warm white 12vdc 203-991-22-38 warm white 24vdc 203-998-04-38 white *10ma 203-998-20 green 5/6vdc 203-998-20-38 white 5/6vdc 203-998-22-38 white 24vdc 203-998-24-38 white 48vdc de-rating information continued 0.0 100.0 80.0 60.0 40.0 20.0 55 50 15 25 35 45 ambient temperature ta (c) forward current if (ma) derating graph r 10 20 30 40 50 8.5
marl international limited ds: 012/ 10 issue 4 page 4 of 4 bs en iso 9001:2008 approved manufacturer ? marl international limited technical documentatio n has been designed by marl international limited f or the intention of providing information, which must not be copied or released to a third party without prior written con sent from marl international limited. the information provided does not constitu te part of any order or contract and should not be regarded as a representation relating to either products or service. no responsi bility can be assumed for inaccuracies or printing errors. marl international limited reserve the rig ht to alter with out notice the specification or any conditions of supply for product or service. to order to order please contact us on: t: +44 (0)1229 582 430 f: +44 (0)1229 585 155 e: sales@marl.co.uk w: www.leds.co.uk 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 portion of the encapsulation ( flat-topped) to provide even illumination of switch es and annunciators. non flat topped versions are also ava ilable. product evaluation filament replacement leds have been specifically de signed to meet the primary objective of providing i mproved reliability. as this product range is suitable for both new-build a nd retro-fit, (sometimes in very old systems), a wi de range of illuminated push button switches and lamp holders can be encountered . due to subjectivity, evaluation of the led type i s recommended, (samples of all standard models are available). car e should be taken to correctly simulate operating a mbient light conditions to ensure that the correct device has been selected to maximise viewing characteristics such as viewing a ngle, 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 pr oducts. the range of possible situations is very diverse but voltage lev els as high as several thousand volts can and do ar ise in many individual situations. when an operator charged up to these le vels 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 neve r considered to be static sensitive devices, change s in manufacturing technology and materials used to produce higher int ensity products over a large range of the wavelengt h spectrum have changed this. marl has an approved system of esd co ntrol from goods in, through production and into fi nal packing and despatch. marl recommend all users of led based pro ducts follow the guidelines of bs 100015. power de-rating the forward voltage/ current value of an led is dep endant upon the ambient temperature of the environm ent in which it is operated. therefore, care must be taken to operate the led at the correct voltage/ current values, dep ending upon the ambient temperature. consequently, a recommendation regarding operating voltages and currents is given in order to address these temperature effects. this recommendation is t ermed de-rating. it is usual for forward voltages and currents to be specified for ambient temperature of 25c. however, because the values of these qualities vary with te mperature, please refer to the de-rating graphs for correct operation. marl accept no liability for any product that is operat ed higher than the stated voltage. 203 series
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