208-993-23-38 datasheet, PDF - EEWORLD Datasheet

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208-993-23-38: Descriptionfilament replacement leds - T6.8sb; CategoryLED optoelectronic/LED photoelectric; File Size266KB，3 Pages; ManufacturerMarl International; Websitehttps://www.leds.co.uk; Environmental Compliance

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208-993-23-38 Overview

filament replacement leds - T6.8sb

208-993-23-38 Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
package instruction	ROHS COMPLIANT PACKAGE-1
Reach Compliance Code	compliant
color	WARM WHITE
color@wavelength	White
Configuration	SINGLE
Maximum forward voltage	28 V
Lens type	WATER CLEAR
Nominal luminous intensity	9200.0 mcd
Installation features	PANEL MOUNT
Number of functions	1
Number of terminals	1
Maximum operating temperature	85 °C
Minimum operating temperature	-30 °C
Optoelectronic device types	SINGLE COLOR LED
total height	42.6 mm
method of packing	BULK
shape	CYLINDRICAL
size	4.9 mm
surface mount	NO
T code	T-1 3/4
Base Number Matches	1

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FILAMENT REPLACEMENT LEDs - T6.8SB

FEATURES

208 SERIES

PACK QUANTITY = 20 PIECES

Direct replacement for T6.8 Slide Base

Flat-topped for enhanced, even illumination of large

lens areas

Durable to shock and vibration

Ideal for industrial pushbutton switches and

annunciator panels

Warm White LEDs may be used behind coloured lens

as a true replacement for a filament lamp

SPECIFICATIONS

Ordering Information & Typical T

echnical Characteristics (T

a = 25°C)

Mean Time Between Failure = 100,000 Hours.

PART NUMBER

COLOUR

Luminous intensity figures refer to the unmodified discrete LED.

VOLTAGE

Vopr

CURRENT

lopr

LUMINOUS

lv@20mA

WAVE

λp

OPERATING

opr

STORAGE

stg

LENS

INTENSITY

LENGTH

TEMP

HIGH INTENSITY

208-501-21-38

208-521-21-38

208-532-21-38

208-930-21-38

208-997-21-38

208-993-21-38

208-501-23-38

208-521-23-38

208-532-23-38

208-930-23-38

208-997-23-38

208-993-23-38

UNITS

Red

Yellow

Green

Blue

Cool White

Warm White

Red

Yellow

Green

Blue

Cool White

Warm White

Water Clear

24-28

Vdc

11000

16000

23000

7000

14000

9200

11000

16000

23000

7000

14000

9200

mcd

643

591

527

470

*see below

**see below

643

591

527

470

*see below

**see below

-40 ~ +95^

-30 ~ +85^

-40 ~ +95^

-30 ~ +85^

-40 ~ +100

Yes

997F-C

0.245

0.229

*Typical

emission colour cool white

0.361

0.356

0.264

Please note that this product is also available in different voltages. Contact our sales

department for further details.

0.385

0.351

0.220

^ = Products must be derated according to the derating information. Each derating graph refers to

specific LEDs.

Appropriate LED numbers shown. - Refer to page 3.

993

**Typical

emission colour warm white

0.426

0.439

0.497

0.477

0.400

0.431

0.446

0.413

Intensities (lv) and colour shades of white (x,y co-ordinates) may vary between LEDs within a batch.

How to Order:

website: www.marl.co.uk • email: sales@marl.co.uk •

•

elephone +44 (0)1229 582430

•

Fax: +44 (0)1229 585155

relating to either products or service.

for products or service.

The information contained in this datasheet does not constitute part of any order or contract and should not be regarded as a representation

Marl International reserve the right to alter without notice the specification or any conditions of supply

Issue 2

SAMPLES AVAILABLE

Page 1 of

208 Series

Dimensions in mm (Typical)

Not to scale

product denotes LED colour

+ printed on base denotes Anode. Colour dot on

TECHNICAL INFORMATION

Lamp Base Style

elephone Slide Base T6.8

Series

208

Metric Equivalent (mm)

Maximum Power Dissipation (mW)

625

DESIGN CONSIDERATIONS

Single-Chip LEDs

All devices feature water clear high intensity LEDs as standard. The single chip LED devices have been modified by the removal of the domed

please contact the sales department for details.

Product Evaluation

Filament Replacement LEDs have been specifically designed to meet the primary objective of providing improved reliability. As this product range

is suitable for both new-build and retro-fit, (sometimes in very old systems), a wide range of illuminated push button switches and lamp holders

be taken to correctly simulate operating ambient light conditions to ensure that the correct device has been selected to maximise viewing

characteristics such as viewing angle, colour compatibility and on/off contrast ratio.

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

can be encountered. Due to subjectivity, evaluation of the LED type is recommended, (samples of all standard models are available). Care should

portion of the encapsulation (flat-topped) to provide even illumination of switches and annunciators. Non flat topped versions are also available,

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

and despatch. We recommend all users of LED based products follow the guidelines of BS 100015.

Power de-rating

wavelength spectrum have changed this. Marl has an approved system of ESD control from goods in, through production and into final packing

care must be taken to operate the LED at the correct voltage/current values, depending upon the ambient temperature. Consequently, a

termed ‘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,

recommendation regarding operating voltages and currents is given in order to address these temperature effects. This recommendation is

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, Marl should be contacted if the device is to be operated at a temperature significantly higher than 25°C.

Marl accept no liability for any product that is operated higher than the stated voltage.

Note:

All luminous intensity figures refer to the unmodified discrete LED.

How to Order:

website: www.marl.co.uk • email: sales@marl.co.uk •

•

elephone +44 (0)1229 582430

•

Fax: +44 (0)1229 585155

relating to either products or service.

for products or service.

The information contained in this datasheet does not constitute part of any order or contract and should not be regarded as a representation

Marl International reserve the right to alter without notice the specification or any conditions of supply

Approved Manufacturer

BS EN ISO 9001:2000

Issue 2

SAMPLES AVAILABLE

Page 2 of

208-993-23-38 Related Products

	208-993-23-38	208-501-23-38	208-521-23-38
Description	filament replacement leds - T6.8sb	filament replacement leds - T6.8sb	filament replacement leds - T6.8sb
Is it lead-free?	Lead free	Lead free	Lead free
Is it Rohs certified?	conform to	conform to	conform to
package instruction	ROHS COMPLIANT PACKAGE-1	ROHS COMPLIANT PACKAGE-1	ROHS COMPLIANT PACKAGE-1
Reach Compliance Code	compliant	compliant	compliant
color	WARM WHITE	RED	YELLOW
color@wavelength	White	Red	Yellow
Configuration	SINGLE	SINGLE	SINGLE
Maximum forward voltage	28 V	28 V	28 V
Lens type	WATER CLEAR	WATER CLEAR	WATER CLEAR
Nominal luminous intensity	9200.0 mcd	11000.0 mcd	16000.0 mcd
Installation features	PANEL MOUNT	PANEL MOUNT	PANEL MOUNT
Number of functions	1	1	1
Number of terminals	1	1	1
Maximum operating temperature	85 °C	95 °C	95 °C
Minimum operating temperature	-30 °C	-40 °C	-40 °C
Optoelectronic device types	SINGLE COLOR LED	SINGLE COLOR LED	SINGLE COLOR LED
total height	42.6 mm	42.6 mm	42.6 mm
method of packing	BULK	BULK	BULK
shape	CYLINDRICAL	CYLINDRICAL	CYLINDRICAL
size	4.9 mm	4.9 mm	4.9 mm
surface mount	NO	NO	NO
T code	T-1 3/4	T-1 3/4	T-1 3/4
Base Number Matches	1	1	1
peak wavelength	-	643 nm	591 nm

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