S8284 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – Quadrant PIN photodiode for violet laser

PHOTODIODE
Si PIN photodiode
S8284
Quadrant PIN photodiode for violet laser
S8284 is a high-sensitivity Si PIN photodiode optimized for violet laser detection and especially ideal for optical disc pickups using a violet laser
which has now been put into practical use. S8284 offers 30 % higher sensitivity (at 410 nm) than the conventional type (S1651). S8284 also
features high-speed response at a low bias voltage.
Features
l TO-18 package
l High sensitivity: 0.3 A/W Typ. (λ=410 nm)
l High-speed response: 500 MHz Typ. (VR=3 V)
l Active area: 0.6 × 1.2 mm/4 elements
Applications
l Violet laser detection
l Optical disc pickup using violet laser
s Absolute maximum ratings (Ta=25 °C)
Parameter
Symbol
Reverse voltage
VR Max.
Operating temperature
Topr
Storage temperature
Tstg
Value
20
-20 to +100
-55 to +125
s Electrical and optical characteristics (Typ. Ta=25 °C, per 1 element, unless otherwise noted)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Spectral response range
λ
-
320 to 1000
-
Peak sensitivity wavelength
λp
-
760
-
Photo sensitivity
S λ=410 nm
0.26
0.30
-
Dark current
ID VR=3 V, all elements
-
10
200
Terminal capacitance
Ct VR=3 V, f=1 MHz
-
2
4
Cut-off frequency
fc
VR=3 V, RL=50 Ω
-3 dB
300
500
-
Unit
V
°C
°C
Unit
nm
nm
A/W
pA
pF
MHz
1