FILAMENT REPLACEMENT LEDs - T1
FEATURES
202
SERIES
Direct replacement for French Style T1 MF SX3s
Flat-topped for enhanced, even illumination of large
lens areas
PACK QUANTITY = 20 PIECES
Centre contact Anode as standard
Fit and Forget reliability
Reverse polarity available
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
202-301-21-38
202-325-21-38
202-324-21-38
202-934-21-38
202-998-21-38
202-991-21-38
202-301-23-38
202-325-23-38
202-324-23-38
202-934-23-38
202-998-23-38
202-991-23-38
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
19
19
19
20
20
20
20
20
20
mA
900
4300
7800
2300
4600
2300
900
4300
7800
2300
4600
2300
mcd
660
590
525
470
*
**
660
590
525
470
*
**
nm
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
-40 ~ +95^
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
fig 1
Please note that this product is also available in different voltages. Contact our sales
department for further details.
* = Typical emission colour: cool white x=0.31, y=0.32
** = Typical emission colour: warm white x=0.44, y=0.4.
Intensities (lv) and colour shades of white (x,y co-ordinates) may vary between LEDs within a batch.
^ = Products must be derated when used above 40°C - Refer to
fig 1.
Warm White LEDs may be used behind coloured lens as a true replacement for a filament
lamp.
How to Order:
website: www.marl.co.uk • email: sales@marl.co.uk •
•
T
elephone +44 (0)1229 582430
•
Fax: +44 (0)1229 585155
Max forward DC current vs ambient
temperature (Tjmax=105°C)
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 064/06
Issue 1
SAMPLES AVAILABLE
Page 1 of 2
202 Series
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.
TECHNICAL INFORMATION
Lamp Base Style
Sub-midget Flange T1 SX3s
Series
202
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
can be encountered. Due to subjectivity, evaluation of the LED
Power derating
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
portion of the encapsulation (flat-topped) to provide even illumination of switches and annunciators. Non flat topped versions are also available,
care must be taken to operate the LED at the correct voltage/current values, depending upon the ambient temperature. Consequently, a
termed ‘de-rating’.
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.
Electro-static Discharge (ESD)
Build up of electrostatic 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
and despatch. We recommend all users of LED based products follow the guidelines of BS 100015.
Note:
All luminous intensity figures refer to the unmodified discrete LED.
wavelength spectrum have changed this. Marl has an approved system of ESD control from goods in, through production and into final packing
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 064/06
Issue 1
SAMPLES AVAILABLE
Page 2 of 2
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