998 * typical emission colour cool white x 0.287 0.283 0.330 0.330 y 0.295 0.305 0.360 0.339 filament replacement leds features specifications direct replacement for french style t1 mf sx3s flat topped led for enhanced, even illumination of large lens areas water clear lens centre contact anode as standard other voltages and reverse polarity options availab le pack quantity = 20 pieces 202 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, please refer to graphs on page 3. marl international limited ds: 011/ 10 issue 4 page 1 of 5 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 graph 202-301-21-38 red 12 20 39 660 -40 ~ +85^ -40 ~ +85 a 202-325-21-38 yellow 12 20 87 590 -30 ~ +85^ -40 ~ +120 o 202-324-21-38 green 12 20 576 525 -30 ~ +85^ -40 ~ +100 r 202-934-21-38 blue 12 20 128 470 -30 ~ +85^ -40 ~ +100 r 202-998-21-38 cool white 12 20 414 * -30 ~ +85^ -40 ~ +100 h 202-301-23-38 red 24 - 28 11 39 660 -40 ~ +85^ -40 ~ +85 a 202-325-23-38 yellow 24 - 28 11 87 590 -30 ~ +85^ -40 ~ +120 o 202-324-23-38 green 24 - 28 11 576 525 -30 ~ +85^ -40 ~ +100 r 202-934-23-38 blue 24 - 28 11 128 470 -30 ~ +85^ -40 ~ +100 r 202-998-23-38 cool white 24 - 28 11 414 * -30 ~ +85^ -40 ~ +100 h
202 series technical data marl international limited ds: 011/ 10 issue 4 page 2 of 5 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 dimensions in mm (typical) not to scale lamp base style series metric equivalent (mm) max. power dissipation (mw) sub midget flange t1 sx3s 202 4 250 green dot on base of product signifies centre conta ct cathode -ve colour sleeve on product denotes led colour
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 de-rating information 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 h 10 20 30 40 50 8 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 o 10 20 30 40 50 202 series marl international limited ds: 011/ 10 issue 4 page 3 of 5 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
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: 011 / 10 issue 4 page 4 of 5 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 number colour voltage dc (vdc) vopr 202-000-04-51 orange *10ma 202-301-04-38 red *10ma 202-301-20-38 red 5/6vdc 202-301-22-38 red 24vdc 202-301-22-50 red 24vdc 202-301-22-51 red 24vdc 202-301-22-52 red 24vdc 202-301-24-38 red 48vdc 202-301-30-38 red 5/6vdc rp 202-301-33-38 red 28vdc rp 202-302-23 red 28vdc 202-303-22-38 red 24vdc 202-303-23 red 28vdc 202-303-23-38 red 28vdc 202-305-22-38 red 24vdc 202-306-23-38 orange 28vdc 202-311-22-38 yellow 24vdc 202-314-22-38 green 24vdc 202-314-23-38 green 28vdc 202-314-33-38 green 28vdc rp 202-320-22-38 blue 24vdc 202-324-04-38 green *10ma 202-324-20-38 green 5/6vdc 202-324-22-38 green 24vdc 202-324-22-50 green 24vdc 202-324-22-51 green 24vdc 202-324-22-52 green 24vdc 202-324-23 green 28vdc 202-324-30-38 green 5/6vdc rp 202-324-32-50 green 24vdc rp 202-324-33-38 green 28vdc rp 202-325-04-38 yellow *10ma 202-325-20-38 yellow 5/6vdc 202-325-22-38 yellow 24vdc 202-325-22-50 yellow 24vdc 202-325-22-52 yellow 24vdc 202-325-30-38 yellow 5/6vdc rp part numbers also available in the 202 series: the products listed above illustrate all of the opt ions available to order. these products may have custom modifications that alter t heir operation beyond the generic information contained within this datasheet . please contact sales for further information. rp = reverse polarity * = these products do not contain an integral resis tor 202-325-33-38 yellow 28vdc rp 202-350-23-29 red 28vdc 202-351-23-29 yellow 28vdc 202-352-23-29 green 28vdc 202-934-20-38 blue 5/6vdc 202-934-22-38 blue 24vdc 202-934-22-50 blue 24vdc 202-934-22-52 blue 24vdc 202-934-30-38 blue 5/6vdc rp 202-934-32-38 blue 24vdc rp 202-934-33-38 blue 24vdc rp 202-991-04-38 warm white *10ma 202-991-20-38 warm white 5/6vdc 202-991-22-38 warm white 24vdc 202-991-23 warm white 28vdc 202-991-23-38 warm white 28vdc 202-991-33-38 warm white 28vdc rp 202-991-34-38 warm white 48vdc rp 202-991-42-38 warm white 15vdc 202-991-53-50 warm white 50vdc 202-998-04-38 white *10ma 202-998-04-50 white *10ma 202-998-20-38 white 5/6vdc 202-998-22-38 white 24vdc 202-998-22-50 white 24vdc 202-998-22-52 white 24vdc 202-998-23-50 white 28vdc 202-998-23-51 white 28vdc 202-998-24-38 white 48vdc 202-998-30-38 white 5/6vdc rp 202-998-32-38 white 24vdc rp 202-998-33-38 white 28vdc rp 202 series
marl international limited ds: 011/ 10 issue 4 page 5 of 5 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. 202 series
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