LE B A2A-EWJW-23 OSRAM Opto Semiconductors Inc, LE B A2A-EWJW-23 Datasheet - Page 5
![LED OSTAR PROJ 4CHIP BLUE](/photos/8/30/83073/le_b_a2a-ewjw-23_sml.jpg)
LE B A2A-EWJW-23
Manufacturer Part Number
LE B A2A-EWJW-23
Description
LED OSTAR PROJ 4CHIP BLUE
Manufacturer
OSRAM Opto Semiconductors Inc
Series
Ostarr
Type
With Connectorr
Datasheet
1.LE_B_A2A-EWJW-23.pdf
(16 pages)
Specifications of LE B A2A-EWJW-23
Color
Blue
Luminous Flux @ Current - Test
35 lm
Current - Test
4 x 500mA
Current - Max
4 x 500mA
Driver Circuitry
No
Voltage
3.5V
Wavelength
464nm
Configuration
Single
With Connector
Yes
Voltage - Input
3.5V
Power - Input
12W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Interface
-
Other names
475-1285
SMD NTC Thermistors
SMD NTC Thermistors
R
[Ω]
10k
* for further information please visit
R
R
= 298 K for test condition)
T, T
e = base of the natural logarithm (e = 2.71828)
B = B value, material specific constant of the NTC
thermistor
2008-07-07
R
B
T
N
25
T
= NTC resistance in
= NTC resistance in
=
N
= temperature in K
=
B
N T ⁄
R
N
=
⋅
----------------
T T
T T
e
B
–
No. of R/T
characteristic
s*
EPCOS 8502
⋅
Ω
⋅
Ω
N
⎛
⎝
N
at rated temperature T
-- -
T
1
at temperature T in K
⋅
–
ln
------
T
R
------ -
R
1
N
N
T
⎞
⎠
B
[K]
3940
www.epcos.com
25/50
N
in K (T
N
5
B
[K]
3980
Typische Thermistor Kennlinie
Typical Thermistor Graph
I
F
25/85
=
f
10000
R
(
7000
6000
5000
4000
3000
2000
1000
V
F
Ω
);
0
0
T
board
10 20 30 40 50 60 70
= 25 °C
Resistance
Tolerance
Δ R
± 5%
N
/R
LE T A2A, LE B A2A
N
2) 7) page 16
2) 7)
Seite 16
B value
Tolerance
Δ B/B
± 3%
OHL02609
T
NTC
˚C
90