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FILAMENT REPLACEMENT LEDs - T1
FEATURES
201 SERIES
PACK QUANTITY = 20 PIECES
Direct replacement for T1 Sub Midget Flange SX3s Reverse polarity options
Fits professional and military stylepush buttons Centre contact Anode as standard
SPECIFICATIONS
Ordering Information & Typical T echnical Characteristics (T a = 25C)
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 p OPERATING T opr STORAGE T stg
LENS
DC
DC
INTENSITY
LENGTH
TEMP
TEMP
HIGH INTENSITY
201-301-04-38 201-325-04-38 201-324-04-38 201-934-04-38 201-998-04-38 UNITS Red Yellow Green Blue Cool White Water Clear Water Clear Water Clear Water Clear Water Clear 1.9 2.1 3.5 3.6 3.6 Vdc 20 20 20 20 20 mA 900 4300 7800 2300 4600 mcd 660 590 525 470 *see below nm -40 ~ +85^ -30 ~ +85^ -30 ~ +85^ -30 ~ +85^ -30 ~ +85^
0
-40 ~ +85 -40 ~ +120 -40 ~ +100 -40 ~ +100 -40 ~ +100
0
Yes Yes Yes Yes Yes
C
C
998 x
*Typical emission colour cool white 0.296 0.283 0.330 0.330
y
0.276
0.305
0.339
0.318
Intensities (lv) and colour shades of white (x,y co-ordinates) may vary between LEDs within a batch.
^ = Products must be derated according to the derating information. Each derating graph refers to specific LEDs. Appropriate LED numbers shown. - Refer to page 3.
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
(c) MARL INTERNATIONAL LTD 2007 : DS 063/06
Issue 3
SAMPLES AVAILABLE
Page 1 of
3
201 Series
Dimensions in mm (Typical) Not to scale
Green dot on base indicates centre contact cathode. -ve. Colour dot on product denotes LED colour
TECHNICAL INFORMATION
Lamp Base Style Sub-midget FlangeT1 SX3s Series 201 Metric Equivalent (mm) 4 Maximum Power Dissipation (mW) 360
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 25C. 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 25C. 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
(c) MARL INTERNATIONAL LTD 2007 : DS 063/06
Issue 3
SAMPLES AVAILABLE
Page 2 of
3
DERATING INFORMATION
301
325
324, 934 & 998
201 Series
Part numbers also available in the 201 Series:
PART NO.
COLOUR
VOLTAGE DC (Vdc) Vopr
The products listed above illustrate all of the options available to order. These products may have custom modifications that alter their operation beyond the generic information contained within this datasheet. Please contact sales for further information. Please note: - RP equates to Reverse Polarity
201-301-04 201-301-13-38 201-324-04 201-324-13 201-324-13-38 201-325-04 201-325-13-38 201-351-04 201-381-20 201-382-20 201-934-04 201-934-13-38 201-998-13-38 UNITS
Red Red Green Green Green Yellow Yellow Yellow Red Yellow Blue Blue Cold White
20mA 20mA RP 20mA 20mA RP 20mA RP 20mA 20mA RP 20mA 5/6 Vdc 5/6Vdc 20mA 20mA RP 20mA RP VDC
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
(c) MARL INTERNATIONAL LTD 2007 : DS 063/06
Issue 3
SAMPLES AVAILABLE
Page 3 of
3

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