MARL 258-501-64-38

FEATURES
FILAMENT REPLACEMENT LEDs - T6.8SB
258 SERIES
l
Direct replacement for T6.8 Slide Base
PACK QUANTITY = 10 PIECES
l
Unique SOLO Technology - single product for multi-
l
Flat-topped for enhanced, even illumination of large
l
Durable to shock and vibration
l
Reduces stock and maintenance costs
voltage operating range
lens areas
SPECIFICATIONS
Ordering Information & Typical Technical Characteristics (Ta = 25°C)
Mean Time Between Failure = 100,000 Hours.
PART NUMBER
COLOUR
Luminous intensity figures refer to the unmodified discrete LED.
LENS
VOLTAGE
DC
Vopr
CURRENT
DC
lopr
LUMINOUS
INTENSITY
[email protected]
WAVE
OPERATING
STORAGE
LENGTH
TEMP
TEMP
λp
Topr
Tstg
HIGH INTENSITY
258-501-64
Red
Water Clear
8-48
10
11000
624
-40 ~ +95^
-40 ~ +100
Yes
258-501-64-38
Red
Water Clear
8-48
10
11000
624
-40 ~ +95^
-40 ~ +100
Yes
258-521-64
Yellow
Water Clear
8-48
10
16000
591
-40 ~ +95^
-40 ~ +100
Yes
258-521-64-38
Yellow
Water Clear
8-48
10
16000
591
-40 ~ +95^
-40 ~ +100
Yes
258-532-64
Green
Water Clear
8-48
10
23000
527
-40 ~ +95^
-40 ~ +100
Yes
258-532-64-38
Green
Water Clear
8-48
10
23000
527
-40 ~ +95^
-40 ~ +100
Yes
258-930-64
Blue
Water Clear
8-48
10
7000
470
-40 ~ +95^
-40 ~ +100
Yes
258-930-64-38
Blue
Water Clear
8-48
10
7000
470
-40 ~ +95^
-40 ~ +100
Yes
258-997-64
Cool White
Water Clear
8-48
10
14000
*see below
-40 ~ +95^
-40 ~ +100
Yes
258-997-64-38
Cool White
Water Clear
8-48
10
14000
*see below
-40 ~ +95^
-40 ~ +100
Yes
258-993-64
Warm White
Water Clear
8-48
10
9200
**see below
-30 ~ +85^
-40 ~ +100
Yes
258-993-64-38
Warm White
Water Clear
8-48
10
9200
**see below
-30 ~ +85^
-40 ~ +100
Yes
Vdc
mA
mcd
nm
0
UNITS
997F-C
*Typical emission colour cool white
x
0.245
0.361
0.356
0.264
y
0.229
0.385
0.351
0.220
993
**Typical emission colour warm white
0.426
0.439
0.497
0.477
y
0.400
0.431
0.446
0.413
x
C
C
0
258 series ending in -64 denotes Narrow viewing angle.
258 series ending in -64-38 denotes Wide viewing angle.
Please note this product will illuminate below 8Vac/dc but will not stabilise at
10mA until the 8 volt threshold has been reached.
Absolute maximum input voltage is 50Vac/dc.
^ = Products must be derated according to the derating information. Each derating graph refers to
specific LEDs.
Appropriate LED numbers shown. - Refer to page 3.
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: [email protected] •
•
Telephone +44 (0)1229 582430
•
Fax: +44 (0)1229 585155
The information contained in this datasheet does not constitute part of any order or contract and should not be regarded as a representation
relating to either products or service.
for products or service.
Marl International reserve the right to alter without notice the specification or any conditions of supply
© MARL INTERNATIONAL LTD 2006 : DS 096/06
Issue 1
SAMPLES AVAILABLE
Page 1 of
3
258 Series
Colour dot on product denotes LED colour
Dimensions in mm (Typical)
Not to scale
TECHNICAL INFORMATION
Lamp Base Style
Series
Metric Equivalent (mm)
Telephone Slide Base T6.8
258
-
Maximum Power Dissipation (mW)
625
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 switches and annunciators. Non flat topped versions are also available,
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 type is recommended, (samples of all standard models are available). care should
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 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
wavelength spectrum have changed this. Marl has an approved system of ESD control from goods in, through production and into final packing
and despatch. We recommend all users of LED based products follow the guidelines of BS 100015.
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,
care must be taken to operate the LED at the correct voltage/current values, depending upon the ambient temperature. Consequently, a
recommendation regarding operating voltages and currents is given in order to address these temperature effects. This recommendation is
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.
Note:
All luminous intensity figures refer to the unmodified discrete LED.
How to Order:
website: www.marl.co.uk • email: [email protected] •
•
Telephone +44 (0)1229 582430
•
Fax: +44 (0)1229 585155
The information contained in this datasheet does not constitute part of any order or contract and should not be regarded as a representation
relating to either products or service.
for products or service.
Marl International reserve the right to alter without notice the specification or any conditions of supply
© MARL INTERNATIONAL LTD 2006 : DS 096/06
Issue 1
SAMPLES AVAILABLE
BS EN ISO 9001:2000
Approved Manufacturer
Page 2 of 3
DERATING INFORMATION
501 & 521
532, 930 & 997
993
How to Order:
website: www.marl.co.uk • email: [email protected] •
•
Telephone +44 (0)1229 582430
•
Fax: +44 (0)1229 585155
The information contained in this datasheet does not constitute part of any order or contract and should not be regarded as a representation
relating to either products or service.
for products or service.
Marl International reserve the right to alter without notice the specification or any conditions of supply
© MARL INTERNATIONAL LTD 2006 : DS 096/06
Issue 1
SAMPLES AVAILABLE
BS EN ISO 9001:2000
Approved Manufacturer
Page 3 of 3