502 series
features
• Ø8.1mm mounting
• Nickel plated brass housing, Sealed to IP67
• Wide viewing angle
• Water clear lens for good on/off contrast ratio
• Internal reverse protection diode fitted as standard in all
voltage models
• Internally potted for use in high vibration applications
• Pack Quantity = 10 Pieces
specifications
Typical characteristics (Ta = 25°C)
Part
Number
502-930-21
502-997-21
502-501-23
502-521-23
502-930-23
Colour
Blue
White
Red
Yellow
Blue
Voltage
Vac/dc
12 Vdc
12 Vdc
28 Vdc
28 Vdc
28 Vdc
Current
DC
(mA)
20
20
20
20
20
Luminous
Intensity
(mcd)
9870
27000
600
600
9870
Wave
Length
(nm)
465
* See below
630
585
465
Operating
Temp.
(°C)
-30 - +85
-30 - +85
-40 - +80
-40 - +80
-30 - +85
Storage
Temp.
(°C)
-40 - +100
-40 - +100
-40 - +100
-40 - +100
-40 - +100
De-rating
Graphs
I
D
D
U
997F-C
x
y
*Typical emission colour White
0.31
0.32
-
-
-
-
-
-
^ = Voltage for 20mA product is Vf at 20mA, not Vopr
- Products must be de-rated according to the de-rating information. Each de-rating graph refers to
specific LEDs. Please refer to graphs on page 3.
- Luminous intensity is measured at 20mA on a discrete LED unless otherwise stated.
- Intensities (lv) 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 right
to alter without notice the specification or any conditions of supply for product or service.
BS EN ISO 9001:2008
approved manufacturer
marl international limited - dsn 502 - version 2013-12-03-173358
page 1 of 4
industrial panel lamps
U
502 series
technical data
7.8
11.5
23.8
6
+0.1
8.1 0
7
2.8
Mounting Hole
Anode termination indicated by red sleeve.
Mounting hole to be clean and burr free.
Dimensions in mm (typical)
Not to scale
housing material
Body
Nut
Panel Seal
Termination
Lens
Encapsulation
Lock Washer
Header
Bright Nickel Plated Brass
Bright Nickel Plated Brass
Viton
Brass with Silver Flash finish
Polycarbonate
PC5430 Resin
Spring Steel
-
push on connectors
925-000-00 is brass tin plated - for use
with 502 series lamps
Dimensions in mm (typical). Not to scale.
technical characteristics
Series
502
Max. Power
Dissipation
700
Max. Reverse
Voltage
3*/1000^
Panel Cutout
8.1
Nut Mounting
Torque
0.6
Min. Mounting
Centres
14.5
Max. Panel
Thickness
1.5 - 13.0
units
mW
Vdc
mm
Nm
mm
mm
* = Current version
^ = Voltage version
optional flying lead terminators
Order Code
Suffix
15
15
19
19
Supply
Voltage
DC products
AC products
DC products
AC products
Wire
Colour
Red-anode/ Black-cathode
Brown-live/ Blue-neutral
Red-anode/ Black-cathode
Brown-live/ Blue-neutral
Wire
Length
150mm
150mm
1000mm
1000mm
No/Diameter
of Conductor
Diameter
Insulation
Comments
Customised
lengths
available
19/0.15mm
1.2mm
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 right to alter without notice the specification or any conditions of supply for product or service.
BS EN ISO 9001:2008
approved manufacturer
marl international limited - dsn 502 - version 2013-12-03-173358
page 2 of 4
502 series
de-rating information
Derating Graph D
55
50
45
40
35
55
50
45
40
35
Derating Graph I
55
50
45
40
35
Derating Graph U
Forward Current IF (mA)
Forward Current IF (mA)
30
25
20
15
10
5
0
0.0
20.0
40.0
60.0
80.0
100.0
30
25
20
15
10
5
0
0.0
20.0
40.0
60.0
80.0
8.5
Forward Current IF (mA)
30
25
20
15
10
5
0
0.0
8.5
100.0
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
20.0
40.0
60.0
80.0
100.0
Ambient Temperature Ta (°C)
also available
Part numbers also available in the 502 series:
Part
Colour
Number
502-501-20
502-501-86-19
502-930-21-19
Red
Red
Blue
Vopr
5/6 Vdc
115 Vac 60 Hz
12 Vdc
Voltage
The products listed here 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.
RP = Reverse Polarity
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 right to alter without notice the specification or any conditions of supply for product or service.
BS EN ISO 9001:2008
approved manufacturer
marl international limited - dsn 502 - version 2013-12-03-173358
page 3 of 4
502 series
design considerations
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. Marl 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, please refer
to the de-rating graphs for correct operation. Marl accept no liability for any product that is operated higher than the stated
voltage.
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 right to alter without notice the specification or any conditions of supply for product or service.
BS EN ISO 9001:2008
approved manufacturer
marl international limited - dsn 502 - version 2013-12-03-173358
page 4 of 4
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