ROHM LB-303VK, LB-303VA, LB-303MK, LB-303MA, LB-303DA Datasheet

LB-303AK Series

LED displays

High efficiency, three-digit numeric
displays

LB-303AK Series

External dimensions

The LB-303AK series were designed to meet
the need for multi-digit numeric displays.
These LED numeric displays use GaAsP on
GaP for the emitting material (with the
exception of green) and are housed in an
epoxy resin package. They are three-digit
displays with a character height of 8.0 mm.

!!!!

(Units : mm)

22.0

7.0

7.0

10°

1.0

4.0

1.0

8.0

13.0

φ3- 0.9

(9.2)

φ 0.5

Features

!!!!

1) Height of character : 8.0 mm

2) High efficiency in a compact package.

3) Common anode and common cathode
configurations are available for red, orange
and green.

4) The package surface is painted black and
the segments are colored the display color.

Selection guide

!!!!

Emitting color

Common
Anode

Cathode

∗Order-based production.

Pin assignments

!!!!

a

fb

g

ec

d

Digit 1

++++++

Pin No.

123456

11 10 9 8 7

D.P1

Red Orange Green

LB-303VA

LB-303VK

a

fb

g

ec

d

Digit 2

D.P2

LB-303DA

LB-303DK

+++++

a

fb

g

ec

d

Digit 3

D.P3

∗

∗

LB-303MA

LB-303MK

10
11

1
2
3
4
5
6
7
8
9

φ 0.5

(2.54)

(12.7)

FunctionPin No.

Segment "c"
Digit 1 Common
Segment "d"
Digit 2 Common
Digit 3 Common
Segment D.P
Segment "b"
Segment "f"
Segment "a"
Segment "e"
Segment "g"

5.0

5.0±0.5

Tolerances are ±0.3 unless otherwise noted:

LED displays

Internal circuit schematic

!!!!

a9b7c1d3e10f8g11D.P

LB-303AK Series

(example of common anode)

6

2 Dig.1

4 Dig.2

Absolute maximum ratings

!!!!

Parameter Symbol

Power dissipation
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature

∗

Pulse width 1ms duty 1 / 5

Electrical and optical characteristics

!!!!

Parameter Symbol

Forward voltage
Reverse current
Peak wavelength
Spectral line half width

Not designed for radiation resistance.

PD / seg

V

F

I

R

λ

P

∆λ

P

I
V

Topr

Tstg

(Ta = 25°C)

D

I

F

FP

R

I

F

= 10mA

V

I

F

= 10mA

I

F

= 10mA

R

= 3V

5 Dig.3

Red

LB-303VA / VK

960

40
15

∗

60

3

Orange Green

LB-303DA / DK LB-303MA / MK

960

40
15

∗

60

3

−25~+75

−30~+85

(Ta = 25°C)

Red Orange Green

Min. Typ. Max. Min. Typ. Max.

−−

650

40

100

−

−

−−

−

−

2.02.82.0

−−

610

−

40

Unit

1440

60
20
60

3

∗

mW
mW

mA
mA

V

°C
°C

Min. Typ. Max.

563

40

2.82.1

100

−

−−

2.8 V

−

100

−−

−

−

−−

UnitConditions

µA
nm
nm

Luminous intensity

!!!!

Color

Red

Orange

Green

Note : Measured at IF = 10mA

λ

650

610

563

P

Type
LB-303VA
LB-303VK
LB-303DA
LB-303DK
LB-303MA
LB-303MK

Min. Typ. Max.

1.4

1.4

2.2 6.3

4.0

4.0

−

−

−

Unit

mcd

mcd

mcd