Lediamond
Tesla 2903 Datasheet
LT2702-BU1201-80
The Light Engine
1. Product description
Tesla 2903 is a next generation LED product. With three design features: No
heatsink, omni-directional emitting, shape similar to traditional tungsten light source,
Tesla 2903 can easily design in non-directional lighting application such like bulb,
candle light.
2. Part code
LT 27 02-BU 12 01-80 (F50)
X1
X2
X3
X4
X5
X6
X7
X1 : Part code
X2 : Correlated color temperature “27 : 2700K”
X3 : LED Input Power “02 : 1.3-1.7W”
X4 : Substrate “BU : 29.2 x 3.4mm”
X5 : Dies in series quantity “12”
X6 : Dies in parallel quantity “01”
X7 : CRI “80 : Ra 80min.”
<Features>
- External Dimensions 29.2 x 3.4 x 1.1 mm
- Internal Structure : Transparent Ceramic Base Chip on Board
-
1.3-1.7W without Heatsink. 1.8-2.2W with Heatsink (Maximum Rating)
Luminous Flux : 210 lm @ 40mA
CCT : 2700K (ANSI C78.377 Compliant, in 3-Step MacAdam Ellipse)
CRI : Ra 80min.
Thermal Resistance : 5.5 °C/W
-
RoHS Compliant
3. Outline drawing
Tesla2903 Circuit Layout
4. Performance
(1) Absolute Maximum Rating
Parameter
Symbol
Rating Value
Unit
Input Power
Pi
2.2
W
*1
Forward Current
IF
60
mA
*1
Reverse Current
IR
0.1
mA
Operating Temperature
Top
-30~+85
°C
Storage Temperature
Tst
-40~+100
°C
Case Temperature
Tc
105
°C
*2
Junction Temperature
Tj
150
°C
*3
*1 Input power and forward current are the values when the LED is used within the
range of the derating curve in the datasheet.
1.3-1.7W don’t need to use heatsink. 1.8-2.2W need to use heatsink.
*2 Refer to 3. Outline drawing for T c measurement point
*3 DC Current : Tj = Tc + Rj-c x Pi
(2) Electro-optical Characteristics
TC=25°C
Parameter
Symbol Condition
Min.
Typ.
Max. Unit
Forward Voltage
VF
IF=40mA
31.5
34.2
37.0
V
Luminous Flux
IV
IF=40mA
180
220
--
lm
CRI
Ra
IF=40mA
80
--
--
--
Thermal Resistance
Rj-c
Junction-case --
5.5
--
°C/W
Performance Groups ─ Brightness (IF = 40 mA, Tj = 25°C)
Tesla 2903 LEDs are tested for luminous flux and placed into one of the following
bins.
Group
Code
Min. Luminous Flux Max. Luminous Flux
@ 40mA
@ 40mA
A4
180
200
B1
200
220
B2
220
250
Performance Groups ─ Forward Voltage Ranks (Tj = 25°C)
Tesla 2903 LEDs are tested for forward voltage and placed into one of the regions.
Group
Code
Min. Forward Voltage
@ 40mA
Max. Forward Voltage
@ 40mA
330
33
33.5
335
33.5
34
340
34
34.5
345
34.5
35
350
35
35.5
355
35.5
36
Chromaticity coordinates ( Condition : IF = 40mA, Tc = 25°C)
Reference (ANSI C78.377)
Note : The tolerance of measurement is VF +/- 3%, IV +/- 10%, (x, y) +/- 0.005,
and Ra+/- 1.
5. Characteristics
Electrical Characteristics (TC = 25°C)：
Relative Luminous Flux vs. Current
(TC = 25°C)：
Forward Current vs. Relative Chromaticity
Coordinate：
Case Temperature vs. Forward Voltage：
Case Temperature vs. Relative
Case Temperature vs. Relative
Luminous Flux：
Chromaticity Coordinate：
Relative Spectral Power Distribution
(IF = 40 mA, T C = 25°C)：
Light Distribution Curve：
6. Packing Specifications
Tesla 2903 LEDs are packaged in trays of 30. Five trays are sealed in an aluminum
foil bags and placed inside a carton, for a total of 3000 LEDs per carton.
Tray (Dimensions：113mm x 183mm x 12.8mm)
< Packing Figure >
< Inside Figure of Carton >
< Example of Indication Label >
1. Type : Tesla xxxx
2. Part Name : LTxxxx-xxxxxx-xx(xxx)
3. Lot Number : xx xx xxxx
4.
-
1st & 2nd letter : last digit of the year
3rd & 4th letter : Production month
Others : Control number
Bin Group : x1 x2 xx3
x1 : Bin of Luminous Flux
x2 : Bin of Color Temperature
- xx3 : Bin of Voltage
5. Q’ty : Quantity
e.g. 13 : year 2013
e.g. 06 : June
e.g. 0001
e.g. B1 : 200-220lm
Refer to ANSI white Bin Group
e.g. 340 : 34.0-34.5V