ROHM LA-101VA, LA-101MK, LA-101MA, LA-101AK, LA-101VK Datasheet

LA-101AK Series

LED displays

High efficiency, single-digit numeric
displays

LA-101AK Series

External Dimensions

The LA-101AK series are LED numerical displays
designed to allow use even in bright locations. The height
of the character is 25.4 mm, and two colors are available:
red and green. These displays are designed for use in
large numerical displays.

!!!!

24.0±0.2

(Units: mm)

10˚

2.5

Features

!

1) Height of character: 25.4 mm

2) Dimensions: 24 x 34 x 10.5 mm

3) A common anode configuration and a common
cathode configuration are available for each color.

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

5) High luminance, clear display.

Selection guide

!!!!

Emitting color

Common
Anode
Cathode

Pin assignments

!!!!

10 9 8 7 6

+++ + +

a

fb

g

e

d

++++

+

Pin No.

12345

Red

LA-101VA

LA-101VK

c

D.P

Green

LA-101MA

LA-101MK

1
2
3
4
5
6
7
8
9

10

FunctionPin No.

Segment "e"
Segment "d"
Common
Segment "c"
D.P
Segment "b"
Segment "a"
Common
Segment "f"
Segment "g"

φ0.5

(2.54)

25.4

34.0±0.2

2.5

14.1

(10.16)

Tolerances are ±0.3 unless otherwise noted :

φ3.2

10.5±0.2

3.5Min.

(30.5)

LED displays

LA-101AK Series

!!!!

Internal circuit schematic

COM

3,8

Absolute maximum ratings

!

a7b6c4d2e1f

Parameter

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

Pulse width 1ms duty 1 / 5

∗

( ) is D.P value

(example of common cathode)

D.P

9g10

5

(Ta=25°C)

Symbol

P

D

PD / seg

F

I

I

FP

V

R

Topr

Tstg

Red

LA-101VA / VK

640

85 (45)

15

∗

60

6 (3)

LA-101MA / MK

−25∼+75

−30∼+85

Green

640

85 (45)

20

∗

60

6 (3)

Unit

mW
mW

mA
mA

V

˚C
˚C

Electrical and optical characteristics

!!!!

Parameter

Symbol

Forward voltage V
Reverse current I
Peak wavelength

Spectral line half
width

Not designed for radiation resistance.
The forward voltage and reverse current values are the guaranteed values per element.

Luminous intensity

!!!!

Red

Green

Note : Measured at IF=10mA

λ

650

563

λ

∆λ

F

R

P

P

Conditions

I

F

=

V

R

I

F

=

F

=

I

LA-101VA
LA-101VK
LA-101MA
LA-101MK

10mA

=

3V

10mA
10mA

Type

(Ta=25°C)

Red
Typ.

Min.

2.0

−

−

−

650

−

−

40

Min.

3.6

5.6

Max.

Min.

2.8

100

−

−

Typ.10Max.

16 −

Green

Typ.

2.1

−

−

563

−

−

40

Unit

Max.

2.8

V

100

−

µA

−

nm

−

nm

UnitColor

mcd

−

mcd