XQ-E Datasheet, PDF (23/31 Pages) Cree, Inc – Cree XLamp XQ-E LEDs

XLamp^® XQ-E LED
Thermal Design - Continued
The maximum forward current is determined by the thermal resistance between the LED junction and ambient. It is crucial for the end
product to be designed in a manner that minimizes the thermal resistance from the solder point to ambient in order to optimize lamp life
and optical characteristics.
Thermal Design - white
high_Hde_in_gsi_hty &_Ih_nig_th_ein_nte_sns_iit_ty_y
Thermal Design - royal blue, blue
high density & high intensity
White Royal Blue, Blue
1200
1200
1000
1000
800
800
600
600
400
Rj-a = 10°C/W
Rj-a = 15°C/W
200
Rj-a = 20°C/W
Rj-a = 25°C/W
400
Rj-a = 10°C/W
Rj-a = 15°C/W
200
Rj-a = 20°C/W
Rj-a = 25°C/W
0
0
Thermal D⁰ esign²⁰- green⁴⁰
60
80
Ambient Temperature (ºC)
100
120
140
16_T0 _hermal
D⁰ esign²-⁰
PC
amber ⁴⁰
60
80
Ambient Temperature (ºC)
100
120
140
160
high intensity
high density & high intensity
Green PC Amber
1200
1200
1000
1000
800
800
600
600
400
Rj-a = 15°C/W
Rj-a = 20°C/W
200
Rj-a = 25°C/W
Rj-a = 30°C/W
0
0
20
40
60
80
100
120
140
160
Ambient Temp_Ter_hat_eur_re_m(ºC_a) _{l Design - photo red}
high density

Red-Orange, Red
1200
400
200
0
0
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
Rj-a = 30°C/W
20
40
60
80
100
120
140
160
Ambient Temperature (ºC)
1000
800
600
400
Rj-a = 10°C/W
Rj-a = 15°C/W
200
Rj-a = 20°C/W
Rj-a = 25°C/W
0
0
20
40
60
80
100
120
140
160
Ambient Temperature (ºC)
Copyright © 2013-2016 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree^® and XLamp^® are registered trademarks and the Cree logo is a trademark of
Cree, Inc. UL^® and the UR logo are registered trademarks of UL LLC.
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