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UPBLED470A
HIGH BRIGHTNESS BLUE LED
PRODUCT PREVIEW
KEY FEATURES
WWW .Microsemi .C OM
Microsemi's high brightness UPBLED470A product offers impressive brightness with industry leading thermal resisitivity. These products deliver superior thermals that keep junction temperatures low with a remarkable package thermal resisitivity of 110 degrees C/Watt. The blue packages also deliver a very wide viewing angle able to easily integrate into optical lenses. The Optomite package performs extremely well under extreme temperature conditions with less wavelength shift and intensity degradation seen by many competitors.
IMPORTANT: For the most current data, consult MICROSEMI's website: http://www.microsemi.com
Low Thermal Resistance Rugged Optomite 0603 package High Brightness Wide viewing angle
APPLICATIONS/BENEFITS Mobile Phone Keypad Panel, button, switch indicators. Backlighting Signage Signals and Marker Lights
ABSOLUTE MAXIMUM RATINGS AT 25 C (UNLESS OTHERWISE SPECIFIED)
Parameters Forward Drive Current Peak Forward Current LED Operating Junction Temperature Reverse Voltage Power Dissipation Operating Temperature Storage Temperature Electrostatic Discharge ESD classification Solder Reflow peak Temperature (Solder 10") THERMAL CHARACTERISTICS
(UNLESS OTHERWISE SPECIFIED)
Symbol IF IFP Tj VR PD TOPR TS ESD
Value 30 100 -40 to +150 8 125 -40 to +125 -45 to +150 1000 Class 2 225
Unit DC mA mA C V mW C C V
C
Thermal Resistance Junction-to Soldering Point
Symbol RJS
Value 110
Units C/W
UPBLED470-A UPBLED470-A
For operation of these LEDs in pulse mode applications, devices may be used in conjunction with the Microsemi LX1992LED Drivers
Copyright 2002 Rev. 0.02, 2003-06-03
Microsemi
580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235
Page 1
UPBLED470A
HIGH BRIGHTNESS BLUE LED
PRODUCT PREVIEW
Forward Voltage
VF 3.9 ELECTRICAL PARAMETERS @ 25C & ID=20 mA (unless otherwise specified)
V
WWW .Microsemi .C OM
Characteristic
Radiant Intensity Luminous Intensity Dominant Wavelength Peak Wavelength Chrom x Chrom y Angle Coverage to 50% points Radiant Flux Luminous Flux Forward Voltage Reverse Leakage Current
* *
Symbol
IE IV DOM PK 1/2 E V VF IR
Test Conditions
DC Drive Current = 20 mA DC Drive Current = 30 mA DC Drive Current = 50 mA DC Drive Current = 20 mA DC Drive Current = 30 mA DC Drive Current = 50 mA DC Drive Current = 20 mA DC Drive Current = 20 mA DC Drive Current = 20 mA DC Drive Current = 20 mA to 50mA DC Drive Current = 20 mA DC Drive Current = 30 mA DC Drive Current = 50 m DC Drive Current = 20 mA DC Drive Current = 30 mA DC Drive Current = 50 m DC Drive Current = 20 mA DC Drive Current = 30 mA DC Drive Current = 50 mA Reverse Voltage = 5 V
Min
Typ.
700 950 1,300 50 75 100 468 460 .125 .09 2 2.8 4 190 250 350 3.5 3.9 4.5
Max
Units
W/sr mcd nm nm
35
140
deg. mW mlm 3.9 V 10 A
Change in Radiant Intensity with temperature -1.4W/sr/C (25C < temp< 85C) Change in Radiant Intensity with temperature 0.7W/sr/C (25C < temp< -40C)
DIRECTIVITY Polar Plot of Angular Intensity
ELECTRICAL ELECTRICAL
Copyright 2002 Rev. 0.02, 2003-06-03
Microsemi
580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235
Page 2
UPBLED470A
HIGH BRIGHTNESS BLUE LED
PRODUCT PREVIEW
WWW .Microsemi .C OM
BOTTOM VIEW
Notes:
Anode is identified by observing the underside of the LED. (Anode is the smaller of the two base pads) Mount to circuit board using 60/40 Pb/Sn or equivalent. Maximum solder melt exposure temperature is 225C for 10 seconds. TAPE AND REEL 3,000 units/reel
Notes: Dimensions is shown in metric.
MECHANICAL MECHANICAL
Copyright 2002 Rev. 0.02, 2003-06-03
Microsemi
580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235
Page 3
UPBLED470A
HIGH BRIGHTNESS BLUE LED
PRODUCT PREVIEW
150 Thermal Resistance (C/watt)
Thermal Resistance vs Power-On time
WWW .Microsemi .C OM
100
50
1 10
3
0.01 0.1 Power-On time (sec)
1
Steady State Thermal Resistance Junction-to-Optomite base metal ~ 110C/W Thermal time constant ~ 20 mS (@ 0.632 x Rmax). Steady state temperature at ~ 500 mS.
THERMAL THERMAL
Mounting footprint, Copper (note: Silver plating will enhance Luminous Intensity)
Copyright 2002 Rev. 0.02, 2003-06-03
Microsemi
580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235
Page 4
UPBLED470A
HIGH BRIGHTNESS BLUE LED
PRODUCT PREVIEW
WWW .Microsemi .C OM
0.1
Forward Voltage vs Drive Current
dc Drive Current (amps)
0.01
1
10
3
1
10
4 2 3 4 Forward Voltage (volts) 5 6
0.1
Power Dissipation vs Drive Current
0.08 dc Drive Current (amps)
0.06
0.04
0.02
0
0
0.2 Power Dissipation (watts)
0.4
0.6
Copyright 2002 Rev. 0.02, 2003-06-03
Microsemi
580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235
Page 5
UPBLED470A
HIGH BRIGHTNESS BLUE LED
PRODUCT PREVIEW
CALCULATION FOR SAFE OPERATION ABOVE 20 ma dc:
WWW .Microsemi .C OM The power dissipation must be held at a level to maintains the junction below the maximum specified operating temperature. Duty cycle control may be used to establish the safe operating condition using a train of pulses. LED Junction temperature may be calculated by use of the following:
TJ
T Case
V F . I Dpk.
t p . R JS
1
tp
. Z
tp
Z
Ztp
TCase is at a specified temperature. VF and IDpk values are read off graph of forward voltage vs drive current. tp and are set by the on-time and pulse period of the drive circuit. Thermal Impedances (Z) and Thermal resistance (R) values are read from Thermal Impedance graph. Conversion of 1931 x y coordinates to 1960 u v coordinates: u = 4x/(-2x + 12y + 3) , v = 6y/(-2x + 12y +3) Conversion of 1960 u v coordinates to 1931 x y coordinates: x = 3u/(2u - 8v +4), y = 2v/(2u -8v +4).
* UPBLED-470A SPICE MODEL .model UPBLED-470A D(Is=1E-30 N=1.923 Rs=32 Ikf=42.04 Eg=3.6 Cjo=63.87p + + M=.1513 Vj=2.02 Fc=.5 Isr=1.3m Nr=3.4Meg Bv=12 Ibv=369.5u Tt=432.8n Xti=5)
UPBLED470-A UPBLED470-A A
Copyright 2002 Rev. 0.02, 2003-06-03
Microsemi
580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235
Page 6

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