537 series
features
• Ø8.1mm mounting
• Product will operate over a wide input voltage range
• Bright nickel plated brass housing, sealed to IP67
• Fully internally potted to resist shock and vibration
• Colour diffused lens
• True bi-polar product for low voltage DC applications
• Other voltages, including DC options are available
• Pack Quantity = 10 Pieces
specifications
Typical characteristics (Ta = 25°C)
Part
Number
537-501-75
537-521-75
537-532-75
537-930-75
537-997-75
537-501-63
537-521-63
537-532-63
537-930-63
537-997-63
Colour
Red
Yellow
Green
Blue
White
Red
Yellow
Green
Blue
White
Voltage
Vac/dc
110 Vac
110 Vac
110 Vac
110 Vac
110 Vac
12-28
12-28
12-28
12-28
12-28
Current
DC
(mA)
6
6
6
6
6
6-16
6-16
6-16
6-16
6-16
Luminous
Intensity
(mcd)
600
600
800
9870
27000
600
600
800
9870
27000
Wave
Length
(nm)
630
585
515
465
* See below
630
585
515
465
* See below
Operating
Temp.
(°C)
-40 - +80
-40 - +80
-40 - +80
-30 - +85
-30 - +85
-40 - +80
-40 - +80
-40 - +80
-30 - +85
-30 - +85
Storage
Temp.
(°C)
-40 - +100
-40 - +100
-40 - +100
-40 - +100
-40 - +100
-40 - +100
-40 - +100
-40 - +100
-40 - +100
-40 - +100
De-rating
Graphs
D
F
U
I
D
D
F
U
I
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 537 - version 2013-12-03-173500
page 1 of 5
industrial panel lamps
D
537 series
technical data
2.9
12.7
7
24
5
+0.1
8.1 0
2.8
Mounting Hole
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
Nickel Plated Brass to BS 2874 CZ121
Stainless Steel Grade 303
Viton
Copper with Silver flash finish
Polycarbonate
PC5430
Zinc Plated Steel
Nylon 6 A82
push on connectors
925-000-00 is brass tin plated - for use
with 537 series lamps
Dimensions in mm (typical). Not to scale.
technical characteristics
Series
537
Max. Power
Dissipation
825
Max. Reverse
Voltage
N/A
Panel Cutout
8.1
Nut Mounting
Torque
0.65
Min. Mounting
Centres
14.5
Max. Panel
Thickness
1.5 - 13.0
units
mW
Vdc
mm
Nm
mm
mm
* = Current version
^ = Voltage version
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 537 - version 2013-12-03-173500
page 2 of 5
537 series
de-rating information
Derating Graph D
55
50
45
40
35
55
50
Derating Graph F
55
50
45
40
35
Derating Graph I
Forward Current IF (mA)
Forward Current IF (mA)
40
35
30
25
20
15
10
5
0
0.0
20.0
40.0
60.0
80.0
100.0
Forward Current IF (mA)
45
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
100.0
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
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 537 - version 2013-12-03-173500
page 3 of 5
537 series
de-rating information continued
Derating Graph U
55
50
45
40
35
Forward Current IF (mA)
30
25
20
15
10
5
0
0.0
20.0
40.0
60.0
80.0
100.0
8.5
Ambient Temperature Ta (°C)
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 537 - version 2013-12-03-173500
page 4 of 5
537 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 537 - version 2013-12-03-173500
page 5 of 5
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