LD141DR

T: +44 (0)1322 527 629

E: light@lightgraphix.co.uk

www.lightgraphix.co.uk

Page 2 of 6 | Data sheet issued: 22 May 2026

WHITE LED ENGINE SPECIFICATION

Engine

E3

F1

Beam angles

12°, 19°

25°

LED manufacturer

NICHIA

CREE

Colour temperature*

2200K, 2700K, 3000K, 4000K, 5000K

2200K, 2700K, 3000K, 4000K, 5000K

Current [Rated Output]

350mA [5W]

500mA [7W]

350mA [3.5W]

500mA [5W]

Typical LED Circuit wattage

4.4W

6.4W

3.3W

5W

Delivered lumens (L100)*

336

440

208

268

Delivered lm/Circuit W**

76

68

63

54

Typical LED Source wattage

4W

5.8W

3W

4.5W

Source LED lm

574

740

377

497

Source lm/W

144

128

126

110

Forward voltage (V100)

11.3V

11.6V

8.7V

9V

CRI

85

90

Colour consistency

2SDCM

3SDCM

Peak intensity**

4,513 cd

1,810 cd

LOR

0.59

0.54

TM30

RF88 | RG99

RF93 | RG99

UGR rating (‘downlight’ mounted) ***

3.2

4.1

4.1

5.1

BUG rating (‘uplight’ mounted)

B0-U3-G0

B0-U3-G0

LED lifetime

L90B5 at 90,000hrs

L90B5 at 90,000hrs

Applications

This data is based on LD141DRX-E3-500-NB and LD141DRX-F1-500/MSB/LW30

*Lumen output data applies to all E3 colour temperatures, for F1, please see lumen variance table to the right

**Indicates the nominal power for the LED run at that aprticular current and includes losses associated with using an 85% efficient driver

***UGR values based on room parameter of 4H 8H, C70 W50 F20

Lumen variance by CCT

2200K

-7%

2700K

+/- 0%

4000K

+7%

5000K

+16%

MECHANICAL

350mA

500mA

Ambient temperature

55°C

E3

Soil/Sleeve

-20°C to 55°C

-20°C to 40°C

Concrete

-20°C to 55°C

-20°C to 55°C

F1

Soil/Sleeve

-20°C to 55°C

-20°C to 40°C

Concrete

-20°C to 55°C

-20°C to 55°C

Glass

6mm toughened glass with ceramic screen print

Materials

Black Anodised aluminium, stainless steel bezel

Weight of product

0.32kg

IP rating

IP67

IK rating

IK08

Wiring

In-series constant current wiring (pre-wired with 2-core exterior cable at a length of 250mm)

ENVIRONMENTAL

TM65

Available on request

TM66

2.7

Repair + Refurbish

This product is included in our Repair and Refurbish scheme. This offers customers the ability to send back products

to us for repair or refurbishment to extend their life without having to buy new fittings.