203 series
features
Direct replacement for T1 ¼ Bi-pin
Flat topped LED for enhanced, even illumination of large
lens areas
Water clear lens
Improves equipment reliability
‘Fit & Forget’reliability
Available in other voltages
Pack quantity = 20 pieces
specifications
Typical characteristics (Ta = 25°C)
Luminous
Voltage
Current
Wave
Length
(nm) λp
Operating Storage
Temp. Temp.
Part
De-rating
Graphs
Intensity
(mcd) Iv
at 20mA
Colour
DC (Vdc) DC (mA)
Number
Vopr
12
Iopr
20
20
20
20
20
11
11
11
11
11
(°C) Topr (°C) Tstg
-40 ~ +85^ -40 ~ +85
-30 ~ +85^ -40 ~ +120
-30 ~ +85^ -40 ~ +100
-30 ~ +85^ -40 ~ +100
-30 ~ +85^ -40 ~ +100
-40 ~ +85^ -40 ~ +85
-30 ~ +85^ -40 ~ +120
-30 ~ +85^ -40 ~ +100
-30 ~ +85^ -40 ~ +100
-30 ~ +85^ -40 ~ +100
203-301-21-38 Red
39
87
660
590
525
470
*
A
O
R
R
H
A
O
R
R
H
203-325-21-38 Yellow
203-324-21-38 Green
203-934-21-38 Blue
12
12
576
128
414
39
12
203-998-21-38 Cool White
203-301-23-38 Red
12
24 - 28
24 - 28
24 - 28
24 - 28
24 - 28
660
590
525
470
*
203-325-23-38 Yellow
203-324-23-38 Green
203-934-23-38 Blue
87
576
128
414
203-998-23-38 Cool White
^ = Products must be de-rated according to the de-rating information. Each de-rating graph refers to specific
LEDs, refer to graphs on pages 2 and 3.
998
* Typical Emission Colour Cool White
x
y
0.287
0.295
0.283
0.305
0.330
0.360
0.330
0.339
Intensities (Iv) and colour shades of white (x,y co-ordinates) may vary between LEDs within a batch
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
© marl international limited technical documentation has been designed by marl international limited for
the intention of providing information, which must not be copied or released to a third party without prior
written consent from marl international limited. the information provided does not constitute part of any
order or contract and should not be regarded as a representation relating to either products or service. no
responsibility can be assumed for inaccuracies or printing errors. marl international limited reserve the
BS EN ISO 9001:2008
right to alter without notice the specification or any conditions of supply for product or service.
approved manufacturer
marl international limited ds: 012/ 10 issue 4
page 1 of 4