520 SERIES
PANEL INDICATOR LED
FEATURES BENEFITS
• Ø6.1mm counter sunk mounting
• Stainless steel housing
• Sealed to IP67 - weatherproof
• Coloured diffused lens
• Internal potting
• Reverse protection diode fitted in all voltage models
• Range of LED colour options
• Range of voltage options
• Flush styling
• Suitable for harsh environments
• Suitable for external applications
• Diffused lens gives wide viewing angle
• Suitable for high vibration applications
• Protects against wrong polarity installation (voltage models)
• Suitable for status panel indication
• Manufactured with internal resistor
• Outstanding reliability
• Vandal resistant
Marl Part
Number LED Colour Typical Voltage
DC Vopr
Typical Current
DC Iopr
Typical LED
Luminous
Intensity
Typical LED
Wavelength
λp
Operating
Temp
Topr *
Storage
Temp
Tstg
520-301-04 Red 1.85 ** 20 33 640 -40 to +75 -40 to +100
520-325-04 Yellow 2.0 ** 20 401 590 -40 to +75 -40 to +100
520-324-04 Green 3.2 ** 20 1010 525 -40 to +75 -40 to +100
520-934-04 Blue 3.2 ** 20225 471 -40 to +75 -40 to +100
520-998-04 Cool White 3.2 ** 20 1194 See Below -40 to +75 -40 to +100
520-301-20 Red 5-6 20 33 640 -40 to +75 -40 to +100
520-325-20 Yellow 5-6 20 401 590 -40 to +75 -40 to +100
520-324-20 Green 5-6 201010 525 -40 to +75 -40 to +100
520-934-20 Blue 5-6 20 225 471 -40 to +75 -40 to +100
520-998-20 Cool White 5-6 20 1194 See Below -40 to +75 -40 to +100
520-301-21 Red 12 20 33 640 -40 to +75 -40 to +100
520-325-21 Yellow 12 20 401 590 -40 to +75 -40 to +100
520-324-21 Green 12 20 1010 525 -40 to +75 -40 to +100
520-934-21 Blue 12 20 225 471 -40 to +75 -40 to +100
520-998-21 Cool White 12 20 1194 See Below -40 to +75 -40 to +100
520-301-23 Red 24-28 15 27 640 -40 to +75 -40 to +100
520-325-23 Yellow 24-28 15 308 590 -40 to +75 -40 to +100
520-324-23 Green 24-28 15 830 525 -40 to +75 -40 to +100
520-934-23 Blue 24-28 15 175 471 -40 to +75 -40 to +100
520-998-23 Cool White 24-28 15 932 See Below -40 to +75 -40 to +100
520-301-24 Red 48 12 18 640 -40 to +75 -40 to +100
520-325-24 Yellow 48 12 208 590 -40 to +75 -40 to +100
520-324-24 Green 48 12 615 525 -40 to +75 -40 to +100
520-934-24 Blue 48 12 125 471 -40 to +75 -40 to +100
520-998-24 Cool White 48 12 648 See Below -40 to +75 -40 to +100
Vdc mA mcd nm °C °C
Typical Emission Colours Cool White LED
X0.2920.2850.3300.330
Y0.2860.3000.3500.329
OPTIONAL FLYING LEAD TERMINATORS
Marl Part No
Suffix Wire Length Wire Colour No/Diameter of
Conductors Diameter of Insulation Wire Specification
520-301-04-15 150mm Red - Anode
Black - Cathode 19/0.16mm 1.2mm Type 44, 22 Gauge
High Performance Wire
520-301-04-19 1000mm
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 semi-
custom 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.
** These are Current models and the voltage shown is Vf at 20mA, not Vopr. Additionally, there is no reverse protection diode in Current models.
To order please contact us on +44 (0) 1229 582 430
F +44 (0) 1229 585 155 |E sales@marl.co.uk | www.leds.co.uk
Q 05480
DSN 520 Version 2014-09-26-082400. Page 1 of 2
marlleds marlinternationallimited company/marl-international-limited
520 SERIES
PANEL INDICATOR LED
To order please contact us on +44 (0) 1229 582 430
F +44 (0) 1229 585 155 |E sales@marl.co.uk | www.leds.co.uk
Q 05480
DSN 520 Version 2014-09-26-082400. Page 2 of 2
TECHNICAL CHARACTERISTICS
Series Max. Power
Dissipation
Max. Reverse
Voltage Panel Cutout Nut Mounting
Torque
Min. Mounting
Centres
Min - Max. Panel
Thickness
520 500 3*/1000^ 6.1 0.65 15.0 3.0 - 6.5
mWVdc mmNmmmmm
* = Current version ^ = Voltage version
TECHNICAL DRAWING
Weight (g): 10.0
Dimensions in mm (typical). Not to scale. Mounting hole to be clean and burr free. Anode termination indicated by long pin.
12.5
6.1
+
0.1
0
45.00°
*
24 10
0.5 Sq
2.54 Ctrs
12
Panel Seal
Sealing Ring
PUSH ON CONNECTOR
11.8
909-000-00 is gold plated, 910-000-00 is tin plated - for use
with 520 series lamps.
Dimensions in mm (typical). Not to scale.
DE-RATING GRAPHS
MATERIALS
50
40
30
20
10
0020406080100
Ambient Temperature Ta (°C)
Forward Current If (mA)
Red LED
50
40
30
20
10
0020406080100
Ambient Temperature Ta (°C)
Forward Current If (mA)
Yellow LED
Body Stainless Steel Grade 303
Nut Stainless Steel Grade 303
Panel Seal Nitrile
Lens Polycarbonate
Encapsulation Black Polyurethane
Lock Washer Stainless Steel
Termination Phosphor bronze with tin on nickel finish
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.
Voltage, Current and Temperature
The forward voltage / current value of an LED is dependent
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.
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.
marlleds marlinternationallimited company/marl-international-limited
50
40
30
20
10
0020406080100
Ambient Temperature Ta (°C)
Forward Current If (mA)
Blue / Green LED
8.5
50
40
30
20
10
0020406080100
Ambient Temperature Ta (°C)
Forward Current If (mA)
Cool White LED
8.5
