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Page 2 of 5 | Data sheet issued: 21 May 2026

LD780

LED ENGINE SPECIFICATION

LED ENGINE SPECIFICATION

MECHANICAL

350mA

500mA

700mA

Ambient temperature

55°C

E3

-20°C to 55°C

-20°C to 35°C

-

F1

-20°C to 55°C

-20°C to 40°C*

-20°C to 40°C*

Glass

Low iron clear glass, 1mm thick

Materials

Aluminium bezel, black anodised aluminium body

Weight of product

0.12kg

IP rating

IP65

Wiring

In-series constant current wiring (pre-wired with cables at a length of 190mm)

*When used in a 120x120x70 void

Engine

E3

F1

Beam angles

12°, 26°

21°, 28°

LED manufacturer

NICHIA

CREE

Colour temperature*

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

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

Current

350mA [5W]

500mA [7]

350mA [3.5W]

500mA [5W]

700mA [7W]

LED power (Max)

4.2

6.0

3.2W

4.5W

6.3W

Delivered lumens (L100)

328

433

256

330

420

Lumens per circuit watt

66

62

81

73

67

CRI (Typ)

85

90

Forward voltage (V100)

14V

9V

Colour consistency

2 SDCM

3 SDCM

Peak intensity

4,359 cd

2,201 cd

LED lumens (at max output)

596

715

LOR

0.73

0.54

TM30

RF86 | RG98

RF90.1 | RG102.2

UGR***

12.8

18.6

LED lifetime

L90B5 at 90,000hrs

L80B5 at 80,000hrs

Applications

These values are based around a LD780-E3-500-LW30-NB & LD790-F1-700-LW30-MSB

*Lumen output data applies to all colour temperatures

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

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

ENVIRONMENTAL

TM65

Available on request

TM66

2.5

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.