643 series
features
• Ø8.1mm mounting
• Colour diffused lens
• Short body length is ideal for portable equipment
• Wide viewing angle
• Sealed to IP67
• Suitable for high vibration applications
• Pack Quantity = 10 Pieces
• Black anodised aluminium housing
specifications
Typical characteristics (Ta = 25°C)
Part
Number
643-503-04
643-509-04
643-512-04
643-501-04
643-521-04
643-532-04
643-930-04
Colour
Red
Yellow
Green
Red
Yellow
Green
Blue
Voltage
Vac/dc
2.0 Vdc
2.1 Vdc
2.2 Vdc
2.0 Vdc
2.1 Vdc
3.4 Vdc
3.4 Vdc
Current
DC
(mA)
20
20
20
20
20
20
20
Luminous
Intensity
(mcd)
80
45
45
600
600
800
140
Wave
Length
(nm)
625
590
565
630
585
515
465
Operating
Temp.
(°C)
-40 - +85
-40 - +85
-40 - +85
-40 - +80
-40 - +80
-40 - +80
-30 - +85
Storage
Temp.
(°C)
-40 - +85
-40 - +85
-40 - +85
-40 - +100
-40 - +100
-40 - +100
-40 - +100
De-rating
Graphs
B
B
C
D
D
F
U
- 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.
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 643 - version 2012-12-06-113933
page 1 of 4
high performance panel lamps
643 series
technical data
Header
7.8
11.1
10
0.65 Sq
2.54
7.5
+0.1
0
11.5
Dimensions in mm (typical)
Not to scale
Anode termination denoted by red indicator
Mounting hole to be clean and burr free
housing material
Body
Nut
Panel Seal
Fresnel Lens
Encapsulation
Lock Washer
Termination
Header
Black Anodised Aluminium
Bright Nickel Plated Brass
Viton
Polycarbonate
PC5430 Resin
Spring Steel
-
-
push on connectors
909-000-00 is gold plated, 910-000-00 is
tin plated - for use with 643 series lamps.
Dimensions in mm (typical). Not to scale.
technical characteristics
Series
643
Max. Power
Dissipation
75
Max. Reverse
Voltage
3*
Panel Cutout
8.1
Nut Mounting
Torque
0.6
Min. Mounting
Centres
14.5
8.1
Max. Panel
Thickness
1.5 - 5.0
units
mW
Vdc
mm
Nm
mm
mm
* = Current Version
^ = Voltage Version
optional flying lead terminations
Order Code
Suffix
19
Supply
Voltage
DC products
Wire
Colour
Red-anode/ Black-cathode
Wire
Length
1000mm
No/Diameter
of Conductor
19/0.15mm
Diameter
Insulation
1.2mm
Comments
Customised
lengths
available
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 643 - version 2012-12-06-113933
page 2 of 4
643 series
de-rating information
Derating Graph B
55
50
45
40
35
55
50
45
40
35
Derating Graph C
55
50
45
40
35
Derating Graph D
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
8
30
25
20
15
10
5
0
0.0
20.0
40.0
60.0
80.0
100.0
Forward Current IF (mA)
30
25
20
15
10
5
0
0.0
20.0
40.0
60.0
80.0
100.0
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
Derating Graph F
55
50
45
40
35
55
50
45
40
35
Derating Graph U
Forward Current IF (mA)
30
25
20
15
10
5
0
0.0
20.0
40.0
60.0
80.0
100.0
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)
Ambient Temperature Ta (°C)
also available
Part numbers also available in the 643 series:
Part
Colour
Number
643-501-04-50
643-501-04-51
643-521-04-51
643-530-04-51
643-532-04-51
643-535-04-15
643-535-04-50
643-930-04-51
643-997-04-51
Red
Red
Yellow
-
Green
Red/Green
Red/Green
Blue
White
Vopr
20 mA dc
20 mA dc
20 mA dc
20 mA dc
20 mA dc
20 mA dc
20 mA dc
20 mA dc
20 mA dc
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.
* = These products do not contain
integral resistors
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 643 - version 2012-12-06-113933
page 3 of 4
643 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 643 - version 2012-12-06-113933
page 4 of 4
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