2

λ = 830nm

90%

10%

Electro-optical Characteristics

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

µ A30

-

-

V

-

-

nA

-

µ A

-30

pF

P

--

-

Ω

-30

µ s

Rie

k

Ω

--

-

± 25

µ m

-

-

R

-

-

0.5

-

A/W

Reverse voltage

Dark current

Collector current

Terminal capacitance

Peak sensitivity wavelength

Response time

Resistance between electrodes

Error of position detection

Sensitivity

Forward voltage

I = 1mA

F

V

1.0

Input

Output

Input

Laser diode

*3

*4

(Ta=25 ˚C)

Fig. 1 Spectral Sensitivity

Fig. 2 Dark Current vs. Ambient Temperature

PD3151F

Sensitivity wavelength range

λ

λ

-

*2

= 1V, f = 10kHz

6

770

320

10

-

400

1.5

1130

480

nm

nm

L : Length of light detector surface =1.5mm

-

10

940

5

Ev : Illuminance by CIE standard light source A (tungsten lamp)

where, I and I

are collector current of A1 and A2 respectively.

12

*4 75% area from detecting portion center to the edge of detecting portion

Definition of error of position detection

: Error of position detection of each incident light position is defined by the following formula, if electrical center position is I = I .

12

*3 Test circuit for response time is shown below.

Error of position detection (

µm) =

x

- Incident light position (

µm)

0

- 25

255075

100

Wavelength

λ (nm)

600

700

800

900

1000

1100

1200

0

20

40

60

80

100

120

s