Panasonic LN145W Datasheet

Visible Light Emitting Diodes (Red)

LN145W

GaAlAs Red Light Emitting Diode

Light source for optical fiber communications,

4.5±0.15

Unit : mm

2.1±0.15

1.6±0.15

0.8±0.13.5±0.15

Features

Red light emission close to monochromatic light : λP = 700 nm
High-power output, high-efficiency
High coupling characteristics and suits to a plastic fiber
High-speed response : –3dB modulation of 10MHz
Side-view flat resin package

3.9±0.2512.8 min.

(2.95) 1.5±0.2

12

Not soldered 0.8 max.

2-1.2±0.3
2-0.45±0.15

0.45±0.2

2.54±0.2

Absolute Maximum Ratings (Ta = 25˚C)

Parameter Symbol Ratings Unit

Power dissipation P
Forward current (DC) I
Pulse forward current I
Reverse voltage (DC) V
Operating ambient temperature
Storage temperature T

*

tw = 10 µs, Duty cycle = 10 %

D

F

*

FP

R

T

opr
stg

120 mW

40 mA

400 mA

3V

–25 to +85 ˚C

–30 to +100 ˚C

Electro-Optical Characteristics (Ta = 25˚C)

Parameter Symbol Conditions min typ max Unit

Radiant power P
Peak emission wavelength λ
Spectral half band width ∆λ IF = 20mA 35 nm
Forward voltage (DC) V
Reverse current (DC) I
Half-power angle θ
Response time tr, t
Cutoff frequency f

*

Cutoff frequency fC : Frequency at which 10

C

IF = 20mA 2.5 4 mW

O

IF = 20mA 700 nm

P

IF = 20mA 1.8 2.2 V

F

VR = 3V 100 µA

R

The angle in which radiant intencity is 50%

I

f

*

× log
PO( at f = 1MHz)

= 100mA 30 ns

FP

PO(at f = fC)

= – 3

80 deg.

10 MHz

1: Cathode
2: Anode

[Element moisture resistance]

It is difficult to guarantee that the LN145W will meet the moisture
resistance specifications (MIL-STD-202D) which are
commonly guaranteed for semiconductors.

1