Structure

Layer

Thickness, μm

Carrier concentration,
cm-3
Mole-Fraction AlAs

p-GaAlAs(Ge)

15-20

>1.0.1018

0.10-0.30

p-GaAlAs(Ge)

1.0-3.0

5.0.1017 (1.0.1018)**

0.01(0.03)*

n-GaAlAs(Te)

130-140

>2.0.1017

0.10-0.30

*   DDH850P
** DDH870PS

Size

Round (cross-round) D=37-50 mm

Characterics

Type

Material
structure/
substrate

Peak wave
length
λp,±10
(±5)*[nm]

Power
at 20mA
P0 [mW]

Forward
voltage
at 20 mA
Uf [V]

Reverse
voltage
at 10 µA
Ur [V] min.

Response
time [ns]

min

typ.

typ.

max

Tr

Tf

DDH870P

AlGaAs/
n-AlGaAs

870

3.5

4.0

 1.25

1.35

8

30

25

DDH870PS

AlGaAs/
n-AlGaAs

870

2.8

3.4

1.25

1.35

8

10

10

DDH850P

AlGaAs/
n-AlGaAs

870

3.5

4.0

1.30

1.40

8

30

25

* on request by customer.