XP-E Datasheet, PDF (9/16 Pages) Cree, Inc – Cree® XLamp® XP-E LEDs

XLAMP XP-E LEDS
THERMAL DESIGN
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.
1100
800
1000
900
800
700
600
Graph 8
11⁷0⁰0⁰
10⁶0⁰0⁰
9⁵0⁰0⁰
R_Rj-_j-a_a =₌ 1₁0_0°°_CC_//_WW
8⁴0⁰0⁰
RRj-j-aa == 15°°CC//WW
7³0⁰0⁰
R^Rj-^j-a^a =⁼ 2²0^0°°^CC^//^WW
6²0⁰0⁰
5¹0⁰0⁰
400⁰
0
Rj-a = 10°C/W
Rj-a =₂₅15°C/W ₅₀
75
100
125
150
300
Rj-a = 20°C/W _{Ambient Temperature (°C)}
200
500
800
Blue
400
700
300
600
RRj-j-aa== 220°CC//WW
G_Rr_Ra_j-jp_-ah_a8_{== 330°CC//WW}
200
R^Rj-^j-a^a=⁼ 4⁴0⁰°^°CC^//^WW
500
Blue
100
400
0
300 ₀
Rj-a = 20°C/W
Rj-a =²⁵30°C/W ⁵⁰
75
100
125
150
Rj-a = 40°C/W ^{Ambient Temperature (°C)}
200
100
1100
0
1000 0
900
White, Blue and Royal Blue
25
50
75
100
125
150
Ambient Temperature (°C)
100
600
0
500 ⁰
Red, Red-Orange
25
50
75
100
125
150
Ambient Temperature (°C)
800
Typ₄i₀c₀al Spatial Distribution
11⁷0⁰0⁰
600
10⁶0⁰0⁰
300
9⁵0⁰0⁰
Rj-a = 20°C/W
8⁴0⁰0⁰
Rj-a = 25°C/W
7³0⁰0⁰
Rj-a = 30°C/W
6²0⁰0⁰
500
Rj-a = 20°C/W
200
Gr^Ra^jp^-h^a9^{= 30°C/W}
Typ₄i₀c₀al
SpRja-ati=a4l0D°Ci/sWtribution
Green
100
5¹0⁰0⁰
400⁰
0
R_Rj_j-_-a_a =₌ 2₂₀0_°°_CC_//_WW
RRjj--aa ==₂₅255°°CC//WW ₅₀
75
100
125
150
300
R^Rj^j-^-a^a =⁼ 3³⁰0^°°^CC^//^WW Ambient Temperature (°C)
200
300
0
0
200
Rj-a = 20°C/W
GRr^R_Rajp-_j^j-_-ha_a^a9=₌⁼253₃²0₀⁰_°^°°_C^CC^/_//^W_WW
G^Rr^Re^je^-j-n^{aa== 4400°°CC//WW}
50
75
100
Ambient Temperature (°C)
125
150
100
100
0
0
25
50
75
100
125
150
Ambient Temperature (°C)
0
0
25
50
75
100
125
150
Ambient Temperature (°C)
Green
Amber
Copyright © 2008-2010 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree, the Cree logo and XLamp are registered trade-
marks of Cree, Inc.
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