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538 SERIES
PANEL INDICATOR LED
Marl Part
Number
LED Colour
538-501-63
538-521-63
538-532-63
538-930-63
538-997-63
538-501-75
538-521-75
538-532-75
538-930-75
538-997-75
Red
Yellow
Green
Blue
Cool White
Red
Yellow
Green
Blue
Cool White
FEATURES
BENEFITS
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Ø12.7mm mounting
Stainless steel housing
Sealed to IP67 - weatherproof
Coloured diffused lens
Internal potting
Bi-polar circuitry
Range of LED colour options
Range of voltage options
Standard industrial mounting size
Suitable for harsh environments
Suitable for external applications
Diffused lens gives wide viewing angle
Suitable for high vibration applications
Suitable for AC or low voltage DC in any orientation
Suitable for status panel indication
Manufactured with internal resistor
Outstanding reliability
Vandal resistant
Typical Voltage
Vopr
Typical Current
DC Iopr
Typical LED
Luminous
Intensity
Typical LED
Wavelength
λp
Operating
Temp
Topr *
Storage
Temp
Tstg
12-28 Vac/dc
12-28 Vac/dc
12-28 Vac/dc
12-28 Vac/dc
12-28 Vac/dc
110 Vac
110 Vac
110 Vac
110 Vac
110 Vac
Bi-polar
6-16
6-16
6-16
6-16
6-16
7
7
7
7
7
mA
236 @ 10mA
217 @ 10mA
1360 @ 10mA
270 @ 10mA
743 @ 10mA
112
103
814
154
393
mcd
625
590
520
470
See Below
625
590
520
470
See Below
nm
-40 to +75
-40 to +75
-40 to +75
-40 to +75
-40 to +75
-40 to +75
-40 to +75
-40 to +75
-40 to +75
-40 to +75
°C
-40 to +100
-40 to +100
-40 to +100
-40 to +100
-40 to +100
-40 to +100
-40 to +100
-40 to +100
-40 to +100
-40 to +100
°C
Typical Emission Colours Cool White LED
X
0.275
0.28
0.29
Y
0.27
0.28
0.30
NOTES
Intensities (lv) and colour shades of white (X-Y co-ordinates) may vary between LEDs within a batch. Additional LED Colours, Voltage Options and Flying Lead lengths available for semicustom projects. Please contact our Sales Team. All LED components are supplied in anti-static packaging.
* For operating temperature derating graphs, please refer to sheet 2.
To order please contact us on +44 (0) 1229 582 430
F +44 (0) 1229 585 155 | E [email protected] | www.leds.co.uk
marlleds
marlinternationallimited
company/marl-international-limited
Q 05480
DSN 538 Version 2014-09-25-092900. Page 1 of 2
538 SERIES
PANEL INDICATOR LED
TECHNICAL CHARACTERISTICS
Series
Max. Power
Dissipation
Panel Cutout
Nut Mounting
Torque
Min. Mounting
Centres
Min. - Max. Panel
Thickness
538
825
12.7
1.0
26.0
2.0 - 10.0
mW
mm
Nm
mm
mm
TECHNICAL DRAWING
Weight (g): 8.6
Dimensions in mm (typical). Not to scale. Mounting hole to be clean and burr free.
Below 50Vac/dc
29
5
3
29
PUSH ON CONNECTOR
6
2.8
14.5
3.7
17
17
3
Above 50Vac/dc
+ 0.3
12.7 0
925-000-00 is brass tin plated - for use with 538 series
lamps. Dimensions in mm (typical). Not to scale.
Mounting Hole
DE-RATING GRAPHS
50
Forward Current If (mA)
Forward Current If (mA)
Red / Green / Blue / Cool White LED
40
30
20
40
30
20
10
10
0
Yellow LED
50
0
20
40
60
80
0
100
0
20
40
60
80
100
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
MATERIALS
Body
Nut
Panel Seal
Lens
Encapsulation
Lock Washer
Termination
Header
Stainless Steel Grade 303
Stainless Steel Grade 303
Viton
Polycarbonate
Black Polyurethane
Stainless Steel
Silver Flash Coated Brass
Nylon 66 A82
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.
it is operated. Therefore, care must be taken to operate the
LED at the correct voltage / current values, depending upon
the ambient temperature.
Marl should be contacted if the device is to be operated
outside the temperature range specified. Marl accept no
liability for any product that is operated outside the stated
voltage or temperature range.
Voltage, Current and Temperature
The forward voltage / current value of an LED is dependent
upon the ambient temperature of the environment in which
To order please contact us on +44 (0) 1229 582 430
F +44 (0) 1229 585 155 | E [email protected] | www.leds.co.uk
marlleds
marlinternationallimited
company/marl-international-limited
Q 05480
DSN 538 Version 2014-09-25-092900. Page 2 of 2