XLAMP® CMT1925 LED

© 2017-2023 Cree LED. The information in this document is subject to change without notice. Cree®, the Cree logo, the Cree LED logo, XLamp® and

EasyWhite® are registered trademarks of Cree LED. UL® and the UL logo are registered trademarks of UL LLC.

CLD-DS186

REV 10

2

CHARACTERISTICS

Characteristics

Unit

Minimum

Typical

Maximum

Viewing angle (FWHM)

degrees

115

ESD withstand voltage (JEDEC JS-001-2012)

V

Class 3A

DC forward current

mA

1700*

Reverse current

mA

0.1

Forward voltage (@ 700 mA, 85 °C)

V

33.7

37.6

*

Refer to the Operating Limits section.

OPERATING LIMITS

The maximum current rating of the CMT1925 depends on the case temperature (Tc) when the LED has reached thermal equilibrium

under steady-state operation. The graphs shown below assume that the system design employs good thermal management (thermal

interface material and heat sink) and may vary when poor thermal management is employed. Either solder pad shown in the Mechanical

Dimensions section on page 16 can be used as the Tc measurement point.

Another important factor in good thermal management is the temperature of the Light Emitting Surface (LES). Cree LED recommends a

maximum LES temperature of 140 °C to ensure optimal LED lifetime. Please refer to the Thermal Design section on page 17 for more

information on LES temperature measurement.

CMT1925 - Standard

0

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

0

25

50

75

100

125

150

Case Temperature (°C)

85 °C, 1700 mA

125 °C,

654 mA