Specifications（25℃）

Symbol

Unit

K81S08M-10.00W

K81S08M-15.00W

K81S08M-20.00W

K81S08M-30.00W

Optical data

CW-output power ⁽¹⁾

P_O

W

10

15

20

30

Center wavelength

l_c

nm

808

Tolerance of l

-

nm

±3, ±10

Temperature drift of l 

-

nm/℃

~0.3

Fiber data ⁽²⁾

Fiber core diameter

W_c

µm

375

Numerical aperture

NA

-

0.22

Fiber connector

-

-

FC, ST, SMA-905

Electrical data

Operation current

I_op

A

2.5

6

Threshold current

I_th

A

0.40±0.04

0.65±0.10

Conversion efficiency 

η

%

40

42

39

42

Slope efficiency

η_D

W/A

4.8

7.0

3.6

5.4

Operation voltage

V_op

V

~10.0

~14

~8.5

~13

Reverse voltage

V_re

V

~10.0

~14

8.0

12

PD data ⁽³⁾

Current 

I_mo

mA

2.0

2.8

1.6

2.4

TEC data

Max. current

I_t

A

8.5

Max. voltage

V_t

V

19.6

29.4

29.4

39.2

Thermistor data

Thermistor

R_t

(K Ω)/β(25℃)

10±5%/3477

Others ⁽⁴⁾

Operation temperature

T_op

℃

10~30

Storage temperature

T_st

℃

-20~+80

Expected lifetime

MTBF

h

>10, 000

Dimensions

(fiber and connector not included)

-

mm

123×80×30

Weight

-

g

~600