ETC 203-998-21-38

FEATURES
FILAMENT REPLACEMENT LEDs - T1¼
203
SERIES
PACK QUANTITY = 20 PIECES
l
Direct replacement for T1¼ Bi-Pin
l
Flat-topped for enhanced, even illumination of
l
Improves equipment reliability
l
‘Fit & Forget’ reliability
l
Warm White LEDs may be used behind coloured lens
large lens areas
as a true replacement for a filament lamp
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
203-301-21-38
Red
Water Clear
12
20
900
660
-40 ~ +85^
-40 ~ +85
Yes
203-325-21-38
Yellow
Water Clear
12
20
4300
590
-30 ~ +85^
-40 ~ +120
Yes
203-324-21-38
Green
Water Clear
12
20
7800
525
-30 ~ +85^
-40 ~ +100
Yes
203-934-21-38
Blue
Water Clear
12
20
2300
470
-30 ~ +85^
-40 ~ +100
Yes
203-998-21-38
Cool White
Water Clear
12
20
4600
*see below
-30 ~ +85^
-40 ~ +100
Yes
203-991-21-38
Warm White
Water Clear
12
20
2300
**see below
-40 ~ +95^
-40 ~ +100
Yes
203-301-23-38
Red
Water Clear
24-28
20
900
660
-40 ~ +85^
-40 ~ +85
Yes
203-325-23-38
Yellow
Water Clear
24-28
20
4300
590
-30 ~ +85^
-40 ~ +120
Yes
203-324-23-38
Green
Water Clear
24-28
20
7800
525
-30 ~ +85^
-40 ~ +100
Yes
203-934-23-38
Blue
Water Clear
24-28
20
2300
470
-30 ~ +85^
-40 ~ +100
Yes
203-998-23-38
Cool White
Water Clear
24-28
20
4600
*see below
-30 ~ +85^
-40 ~ +100
Yes
203-991-23-38
Warm White
Water Clear
24-28
20
2300
**see below
-40 ~ +95^
-40 ~ +100
Yes
Vdc
mA
mcd
nm
0
UNITS
998
x
*Typical emission colour cool white
0.296
0.283
0.330
0.330
y
0.276
0.305
0.339
0.318
991
**Typical emission colour warm white
0.3610
0.3541
0.4588
0.5080
y
0.3900
0.3401
0.3838
0.4720
x
C
C
0
Please note that this product is also available in different voltages. Contact our sales
department for further details.
^ = 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 2007 : DS 091/06
Issue 2
SAMPLES AVAILABLE
Page 1 of
3
203 Series
Resistor lead signifies positive termination +ve.
Dimensions in mm (Typical)
Not to scale
Colour dot on product denotes LED colour
TECHNICAL INFORMATION
Lamp Base Style
Series
Sub-Miniature Bi-Pin T1¼
203
Metric Equivalent (mm)
4
Maximum Power Dissipation (mW)
500
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 electro-static 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 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,
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 2007 : DS 091/06
Issue 2
SAMPLES AVAILABLE
BS EN ISO 9001:2000
Approved Manufacturer
Page 2 of
3
DERATING INFORMATION
301
325
324, 934 & 998
991
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 2007 : DS 091/06
Issue 2
SAMPLES AVAILABLE
BS EN ISO 9001:2000
Approved Manufacturer
Page 3 of
3